CN105356744A - Interlaced parallel bidirectional direct-current chopper circuit topology - Google Patents
Interlaced parallel bidirectional direct-current chopper circuit topology Download PDFInfo
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- CN105356744A CN105356744A CN201510800209.0A CN201510800209A CN105356744A CN 105356744 A CN105356744 A CN 105356744A CN 201510800209 A CN201510800209 A CN 201510800209A CN 105356744 A CN105356744 A CN 105356744A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The invention relates to an interlaced parallel bidirectional direct-current chopper circuit topology. A first capacitor (C1), a second capacitor (C2), a third capacitor (C3), storage inductors (L1A, L1B, L2A and L2B), a first electronic switch (K1), a second electronic switch (K2), a third diode (D3), and a fourth diode (D4) forms a boost circuit; and a fourth capacitor (C4), a second capacitor (C2), a third capacitor (C3), a third electronic switch (K3), a fourth electronic switch (K4), coupling inductors (L1A, L1B L2A and L2B), a first diode (D1), and a second diode (D2) form a step-down circuit. Voltage boosting is realized by adjusting and controlling connection or disconnection of the first electronic switch (K1) and the second electronic switch (K2), thereby completing discharging of an external load by an energy storage battery; and voltage reduction is realized by adjusting and controlling connection or disconnection of the third electronic switch (K3) and the fourth electronic switch (K4), thereby completing charging of the energy storage battery by a solar battery panel.
Description
Technical field
The present invention relates to a kind of space crisscross parallel bidirectional, dc chopper circuit topology.
Background technology
In order to ensure that the spacecrafts such as various satellite, space station, space probe normally work for a long time in space, what the spacecraft of more than 90% adopted in the world is solar array-batteries power-supply system.And the launch cost of spacecraft is in higher level always, the quality reducing spacecraft can reduce launch cost to a great extent.The quality of power-supply system accounts for spacecraft gross mass greatly, and therefore the quality of small electric origin system plays key effect to minimizing Spacecraft Launch cost.
Spacecraft power supply system is spacecraft spacecraft producing, stores, convert, regulate and distribute electric energy.Spacecraft power supply system generally distinguishes three parts: parallel regulator, electric discharge adjuster and charging regulator.The effect of adjuster of wherein discharging is when spacecraft is in shadow region, and regulate the electric discharge of spacecraft energy storage battery system and regulate busbar voltage, charging regulator is then when spacecraft is in sunlight district, completes the charging of spacecraft energy storage battery system.Therefore the performance constantly improving spacecraft accumulator cell charging and discharging converter gets a good eye meaning.Existing document and research show, reversible transducer comparatively uni-directional converter in volume, power density, weight etc. advantageously, therefore the research of two-way DC converter just becomes highly significant.
The launch cost of satellite is very high, therefore must consider whether this topology can ensure the very high mean free error time when selecting suitable high power density electric discharge topology, having two basic principles can reference: all components and parts all must only have less temperature rise; The circuit of whole converter topology will be tried one's best simply.
Along with developing rapidly of AEROSPACE APPLICATION, spacecraft power source power and electric pressure demand constantly increase, and are limited by current semiconductor development restriction, need the work of researching DC chopper circuit running of pumps in series parallel connection.For increasing DC chopper circuit power, usually electronic switch directly in parallel and DC chopper circuit topology parallel running two kinds of modes are adopted at present, but the direct parallel way of electronic switch, higher to drive circuit coherence request, electronic switch in parallel is more, realize parallel current-sharing more difficult, electronic switch is in parallel also higher to busbar symmetry requirement simultaneously.DC chopper circuit topology parallel way needs to realize load current and divides equally, and decalage problem when there is multiple DC chopper circuit current sample, this will cause multiple DC chopper circuit topology parallel current-sharing difficulty.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, propose a kind of crisscross parallel bidirectional, dc chopper circuit topology of space.Topological structure of the present invention is succinct, and energy can two-way flow, and control mode is simple, and power density is high, and ripple current is little, is easier to realize current-sharing, is easier to realize the high-power operation of DC chopper circuit.
Bidirectional, dc chopper circuit topology of the present invention has following four kinds of structures:
1, scheme one: described crisscross parallel bidirectional, dc chopper circuit is made up of the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the first energy storage inductor, the second energy storage inductor, the 3rd energy storage inductor, the 4th energy storage inductor, the first diode, the second diode, the 3rd diode, the 4th diode, the first electronic switch, the second electronic switch, the 3rd electronic switch and the 4th electronic switch, first electronic switch, the second electronic switch, the 3rd electronic switch and the 4th electronic switch are the controlled rapid semiconductor devices turned on and off, first leading-out terminal of the first electric capacity, first leading-out terminal of the first electronic switch, first leading-out terminal of the second electronic switch, first leading-out terminal of the 3rd electronic switch, first leading-out terminal of the 4th electronic switch, first leading-out terminal of the first diode, first leading-out terminal of the second diode, second leading-out terminal of the 3rd diode is connected at the first tie point with the second leading-out terminal of the 4th diode, the first leading-out terminal of the 3rd diode, second leading-out terminal of the 3rd electronic switch, first leading-out terminal of the second electric capacity is connected at the second tie point with the first leading-out terminal of the 3rd energy storage inductor, the first leading-out terminal of the 4th diode, second leading-out terminal of the 4th electronic switch, first leading-out terminal of the 3rd electric capacity is connected at the 3rd tie point with the first leading-out terminal of the first energy storage inductor, the second leading-out terminal of the 3rd energy storage inductor, second leading-out terminal of the first energy storage inductor, first leading-out terminal of the 4th electric capacity connects at the 4th tie point, the second leading-out terminal of the first electronic switch, second leading-out terminal of the first diode, second leading-out terminal of the second electric capacity is connected at the 5th tie point with the first leading-out terminal of the 4th energy storage inductor, the second leading-out terminal of the second electronic switch, second leading-out terminal of the second diode, second leading-out terminal of the 3rd electric capacity is connected at the 6th tie point with the first leading-out terminal of the second energy storage inductor, the second leading-out terminal of the first electric capacity, second leading-out terminal of the 4th electric capacity, second leading-out terminal of the 4th energy storage inductor is connected at the 7th tie point with the second leading-out terminal of the second energy storage inductor.
2, scheme two: described crisscross parallel bidirectional, dc chopper circuit topology is made up of the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the first energy storage inductor, the second energy storage inductor, the 3rd energy storage inductor, the 4th energy storage inductor, the first electronic switch, the second electronic switch, the 3rd electronic switch and the 4th electronic switch, first electronic switch, the second electronic switch, the 3rd electronic switch and the 4th electronic switch are the controlled rapid semiconductor devices turned on and off, first leading-out terminal of the first electric capacity, first leading-out terminal of the first electronic switch, first leading-out terminal of the second electronic switch, first leading-out terminal of the 3rd electronic switch, first leading-out terminal of the 4th electronic switch connects at the first tie point, second leading-out terminal of the 3rd electronic switch, first leading-out terminal of the second electric capacity is connected at the second tie point with the first leading-out terminal of the 3rd energy storage inductor, second leading-out terminal of the 4th electronic switch, first leading-out terminal of the 3rd electric capacity is connected at the 3rd tie point with the first leading-out terminal of the first energy storage inductor, second leading-out terminal of the 3rd energy storage inductor, second leading-out terminal of the first energy storage inductor, first leading-out terminal of the 4th electric capacity connects at the 4th tie point, second leading-out terminal of the first electronic switch, second leading-out terminal of the second electric capacity is connected at the 5th tie point with the first leading-out terminal of the 4th energy storage inductor, second leading-out terminal of the second electronic switch, second leading-out terminal of the 3rd electric capacity is connected at the 6th tie point with the first leading-out terminal of the second energy storage inductor, second leading-out terminal of the first electric capacity, second leading-out terminal of the 4th electric capacity, second leading-out terminal of the 4th energy storage inductor is connected at the 7th tie point with the second leading-out terminal of the second energy storage inductor.
3, scheme three: described crisscross parallel bidirectional, dc chopper circuit topology is made up of the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the second energy storage inductor, the 3rd energy storage inductor, the 4th energy storage inductor, the first diode, the second diode, the 3rd diode, the first electronic switch, the second electronic switch, the 3rd electronic switch, first electronic switch, the second electronic switch, the 3rd electronic switch are the controlled rapid semiconductor devices turned on and off, first leading-out terminal of the first electric capacity, first leading-out terminal of the first electronic switch, first leading-out terminal of the second electronic switch, first leading-out terminal of the 3rd electronic switch, first leading-out terminal of the first diode, first leading-out terminal of the second diode, second leading-out terminal of the 3rd diode connects at the first tie point, the first leading-out terminal of the 3rd diode, second leading-out terminal of the 3rd electronic switch, first leading-out terminal of the second electric capacity is connected at the second tie point with the first leading-out terminal of the 3rd energy storage inductor, the first leading-out terminal of the 3rd electric capacity, second leading-out terminal of the 3rd energy storage inductor, first leading-out terminal of the 4th electric capacity connects at the 4th tie point, the second leading-out terminal of the first electronic switch, second leading-out terminal of the first diode, second leading-out terminal of the second electric capacity is connected at the 5th tie point with the first leading-out terminal of the 4th energy storage inductor, the second leading-out terminal of the second electronic switch, second leading-out terminal of the second diode, second leading-out terminal of the 3rd electric capacity is connected at the 6th tie point with the first leading-out terminal of the second energy storage inductor, the second leading-out terminal of the first electric capacity, second leading-out terminal of the 4th electric capacity, second leading-out terminal of the 4th energy storage inductor is connected at the 7th tie point with the second leading-out terminal of the second energy storage inductor.
4, scheme four: described crisscross parallel bidirectional, dc chopper circuit topology is by the first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, n-th electric capacity, first energy storage inductor, second energy storage inductor, 3rd energy storage inductor, 4th energy storage inductor, the n-th 2 energy storage inductors, the n-th 1 energy storage inductors, first diode, second diode, 3rd diode, 4th diode, the n-th 1 diodes, the n-th 2 diodes, first electronic switch, second electronic switch, 3rd electronic switch, 4th electronic switch, the n-th 1 electronic switches and the n-th 2 electronic switch compositions, first leading-out terminal of the first electric capacity, first leading-out terminal of the first electronic switch, first leading-out terminal of the second electronic switch, first leading-out terminal of the 3rd electronic switch, first leading-out terminal of the 4th electronic switch, first leading-out terminal of the first diode, first leading-out terminal of the second diode, second leading-out terminal of the 3rd diode, second leading-out terminal of the 4th diode, first leading-out terminal of the n-th 1 diodes, second leading-out terminal of the n-th 2 diodes connects at the first tie point, the first leading-out terminal of the 3rd diode, second leading-out terminal of the 3rd electronic switch, first leading-out terminal of the second electric capacity is connected at the second tie point with the first leading-out terminal of the 3rd energy storage inductor, the first leading-out terminal of the 4th diode, second leading-out terminal of the 4th electronic switch, first leading-out terminal of the 3rd electric capacity is connected at the 3rd tie point with the first leading-out terminal of the first energy storage inductor, the first leading-out terminal of the n-th 2 diodes, second leading-out terminal of the n-th 2 electronic switches, first leading-out terminal of the n-th electric capacity is connected at the n-th tie point with the first leading-out terminal of the n-th 2 energy storage inductors, the second leading-out terminal of the 3rd energy storage inductor, second leading-out terminal of the first energy storage inductor, second leading-out terminal of the n-th 2 energy storage inductors, first leading-out terminal of the 4th electric capacity connects at the 4th tie point, the second leading-out terminal of the first electronic switch, second leading-out terminal of the first diode, second leading-out terminal of the second electric capacity is connected at the 5th tie point with the first leading-out terminal of the 4th energy storage inductor, the second leading-out terminal of the second electronic switch, second leading-out terminal of the second diode, second leading-out terminal of the 3rd electric capacity is connected at the 6th tie point with the first leading-out terminal of the second energy storage inductor, the second leading-out terminal of the n-th 1 electronic switches, second leading-out terminal of the n-th 1 diodes, first leading-out terminal of the second leading-out terminal of the n-th electric capacity and the n-th 1 energy storage inductors is connected at the n-th 1 tie points, the second leading-out terminal of the first electric capacity, second leading-out terminal of the 4th electric capacity, second leading-out terminal of the 4th energy storage inductor, second leading-out terminal of the second energy storage inductor, second leading-out terminal of the n-th 1 energy storage inductors connects at the 7th tie point.Wherein n, n1 and n2 be greater than 2 positive integer, between the first tie point and the 7th tie point, n brachium pontis is in parallel, and between the first tie point and the 4th tie point, n brachium pontis is in parallel, has n electric capacity connection in the middle of two brachium pontis.
In above-mentioned four schemes, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the first energy storage inductor, the second energy storage inductor, the 3rd energy storage inductor, the 4th energy storage inductor, the 3rd diode, the 4th diode, the first electronic switch, the second electronic switch composition booster circuit, current signal sum on sampling circuit samples second energy storage inductor of control system and the 4th energy storage inductor controls as inner ring, the voltage signal of the 4th electric capacity of sampling controls as outer shroud, the length of the turn-on and turn-off time of the first electronic switch and the second electronic switch is regulated by controller, and the length of the equal not ON time of the first electronic switch and the second electronic switch, realize line voltage distribution boosting, realize energy stabilization to export, complete the electric discharge of energy storage battery system to external loading, by controlling the length of the first electronic switch and the second electronic switch ON time, the length of the first electronic switch and the second electronic switch not ON time, the boosting realizing the different amplitude of energy storage battery system voltage exports.
First electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the first energy storage inductor, the second energy storage inductor, the 3rd energy storage inductor, the 4th energy storage inductor, the first diode, the second diode, the 3rd electronic switch and the 4th electronic switch composition reduction voltage circuit; Sampling circuit samples first energy storage inductor of control system and the current signal sum of the 3rd energy storage inductor control as inner ring, the voltage signal of the first electric capacity of sampling controls as outer shroud, the turn-on and turn-off time of the 3rd electronic switch and the 4th electronic switch is regulated to realize line voltage distribution step-down by controller, realize energy stabilization to export, complete the charging of solar panel to energy storage battery system, by controlling the turn-on and turn-off time length of the 3rd electronic switch and the 4th electronic switch, realize the reduced output voltage of the different amplitude of chopper circuit.
The present invention adopts control system to control described bidirectional, dc chopper circuit.Control system comprises voltage and current sample circuit, control algolithm circuit, drive circuit.Voltage and current sample circuit gathers voltage signal and line current signal on described first electric capacity and the second electric capacity, voltage and current sample circuit is connected with control algolithm circuit, control algolithm circuit is connected to drive circuit, and drive circuit is connected to the first electronic switch, the second electronic switch, the 3rd electronic switch and the 4th electronic switch respectively.
First energy storage inductor and the coupling of the second energy storage inductor, the 3rd energy storage inductor and the coupling of the 4th energy storage inductor.Boost chopper and buck circuit share same current sampling circuit.
First electronic switch, the second electronic switch and the 3rd electronic switch can be the controlled rapid semiconductor devices turned on and off, such as MOSFET or IGBT etc.
The boosting operation principle process analysis procedure analysis of crisscross parallel bidirectional, dc chopper circuit topology of the present invention is as follows.First the first electronic switch and the second electronic switch conducting is supposed, energy storage battery system is to the second energy storage inductor and the charging of the 4th energy storage inductor, energy storage battery system simultaneously by the 3rd diode and the 4th diode to load discharge, then the first electronic switch and the second electronic switch turn off, and energy storage battery system, the second energy storage inductor and the 4th energy storage inductor are jointly to load discharge.Then the first electronic switch and the second electronic switch conducting, circulation step-up discharge works.By controlling the length of the first electronic switch and the second electronic switch ON time, the boosting realizing the different amplitude of energy storage battery system voltage exports.
The dicyclo boosting rectifier control process of bidirectional, dc chopper circuit is as follows, by current signal sum on control circuit board sampling the 4th and the second energy storage inductor as control current inner loop, to sample voltage signal on the 4th electric capacity as control voltage outer shroud, current inner loop and outer voltage are controlled by PI or P controls, and realize booster circuit burning voltage and export.
The Voltage loop boosting rectifier control process of bidirectional, dc chopper circuit is as follows, by voltage signal on control circuit board the 4th electric capacity as control voltage ring, is controlled or P control, realize booster circuit burning voltage and export by PI.
The step-down operation principle process analysis procedure analysis of bidirectional, dc chopper circuit is as follows, when the 3rd electronic switch and the 4th electronic switch conducting, solar array, the first energy storage inductor and the 3rd energy storage inductor charge to energy storage battery system jointly, when first electronic switch and the 3rd electronic switch turn off, on second energy storage inductor and the 4th energy storage inductor, energy is by the first diode and the second diode continuousing flow, continue to charge to energy storage battery system, then the 3rd electronic switch and the 4th electronic switch conducting, circulate above pressure reduction.By controlling the length of the 3rd electronic switch and the 4th electronic switch ON time, realize the step-down charging of the different amplitude of energy storage battery system voltage.
The dicyclo step-down control procedure of bidirectional, dc chopper circuit is as follows, to sample current signal sum on the first energy storage inductor and the 3rd energy storage inductor as control current inner loop by control circuit board, to sample voltage signal on the first electric capacity as control voltage outer shroud, current inner loop and outer voltage are controlled by PI or P controls, and realize booster circuit burning voltage and export.
The Voltage loop step-down control procedure of bidirectional, dc chopper circuit is as follows, and being sampled on the first electric capacity by control circuit board, voltage signal is as control voltage ring, and Voltage loop is controlled by PI or P controls, and realizes booster circuit burning voltage and exports.
Advantage of the present invention:
A. this space crisscross parallel bidirectional, dc chopper circuit topological structure is succinct;
B. this space crisscross parallel bidirectional, dc chopper circuit energy can two-way flow;
C. this space crisscross parallel bidirectional, dc chopper circuit does not need special drive circuit, and control realization is simple;
D. this space crisscross parallel bidirectional, dc chopper circuit power density is high;
E. the ripple current of this space crisscross parallel bidirectional, dc chopper circuit electronic switch is little;
F. this space crisscross parallel bidirectional, dc chopper circuit is easier to realize current-sharing;
G. this space crisscross parallel bidirectional, dc chopper circuit is easier to realize the high-power operation of DC chopper circuit.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the embodiment of the present invention 1;
Fig. 2 is present system connection diagram;
Fig. 3 is dicyclo boosting rectifier control schematic diagram of the present invention;
Fig. 4 is boosting simulation result of the present invention;
Fig. 5 is dicyclo step-down control principle drawing of the present invention;
Fig. 6 is step-down simulation result of the present invention;
Fig. 7 is the circuit theory diagrams of the embodiment of the present invention 2;
Fig. 8 is the circuit theory diagrams of the embodiment of the present invention 3;
Fig. 9 is the circuit theory diagrams of the embodiment of the present invention 4.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the invention will be further described.
Embodiment 1
Figure 1 shows that embodiments of the invention 1.As shown in Figure 1, bidirectional, dc chopper circuit topology of the present invention is made up of the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the first energy storage inductor L1A, the second energy storage inductor L1B, the 3rd energy storage inductor L2A, the 4th energy storage inductor L2B, the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the first electronic switch K1, the second electronic switch K2, the 3rd electronic switch K3 and the 4th electronic switch K4, first leading-out terminal of the first electric capacity C1, first leading-out terminal of the first electronic switch K1, first leading-out terminal of the second electronic switch K2, first leading-out terminal of the 3rd electronic switch K3, first leading-out terminal of the 4th electronic switch K4, first leading-out terminal of the first diode D1, first leading-out terminal of the second diode D2, second leading-out terminal of the 3rd diode D3 is connected at the first tie point 1 with second leading-out terminal of the 4th diode D4, first leading-out terminal of the 3rd diode D3, second leading-out terminal of the 3rd electronic switch K3, first leading-out terminal of the second electric capacity C2 is connected at the second tie point 2 with first leading-out terminal of the 3rd energy storage inductor L2A, first leading-out terminal of the 4th diode D4, second leading-out terminal of the 4th electronic switch K4, first leading-out terminal of the 3rd electric capacity C3 is connected at the 3rd tie point 3 with first leading-out terminal of the first energy storage inductor L1A, second leading-out terminal of the 3rd energy storage inductor L2A, second leading-out terminal of the first energy storage inductor L1A, first leading-out terminal of the 4th electric capacity C4 connects at the 4th tie point 4, second leading-out terminal of the first electronic switch K1, second leading-out terminal of the first diode D1, second leading-out terminal of the second electric capacity C2 is connected at the 5th tie point 5 with first leading-out terminal of the 4th energy storage inductor L2B, second leading-out terminal of the second electronic switch K2, second leading-out terminal of the second diode D2, second leading-out terminal of the 3rd electric capacity C3 is connected at the 6th tie point 6 with first leading-out terminal of the second energy storage inductor L1B, second leading-out terminal of the first electric capacity C1, second leading-out terminal of the 4th electric capacity C4, second leading-out terminal of the 4th energy storage inductor L2B is connected at the 7th tie point 7 with second leading-out terminal of the second energy storage inductor L1B.
First electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the first energy storage inductor L1A, the second energy storage inductor L1B, the 3rd energy storage inductor L2A, the 4th energy storage inductor L2B, the 3rd diode D3, the 4th diode D4, the first electronic switch K1, the second electronic switch K2 form booster circuit, current signal sum on the sampling circuit samples second energy storage inductor L1B of control system and the 4th energy storage inductor L2B controls as inner ring, the voltage signal of the 4th electric capacity C4 of sampling controls as outer shroud, the length of the turn-on and turn-off time of the first electronic switch K1 and the second electronic switch K2 is regulated by controller, and the length of the equal not ON time of the first electronic switch K1 and the second electronic switch K2, realize line voltage distribution boosting, realize energy stabilization to export, complete the electric discharge of energy storage battery system to external loading, by controlling the length of the first electronic switch K1 and the second electronic switch K2 ON time, the length of the first electronic switch K1 and the second electronic switch K2 not ON time, the boosting realizing the different amplitude of energy storage battery system voltage exports.
First electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the first energy storage inductor L1A, the second energy storage inductor L1B, the 3rd energy storage inductor L2A, the 4th energy storage inductor L2B, the first diode D1, the second diode D2, the 3rd electronic switch K3 and the 4th electronic switch K4 form reduction voltage circuit; The sampling circuit samples first energy storage inductor L1A of control system and the current signal sum of the 3rd energy storage inductor L2A control as inner ring, the voltage signal of the first electric capacity C1 of sampling controls as outer shroud, the turn-on and turn-off time of the 3rd electronic switch K3 and the 4th electronic switch K4 is regulated to realize line voltage distribution step-down by controller, realize energy stabilization to export, complete the charging of solar panel to energy storage battery system, by controlling the turn-on and turn-off time length of the 3rd electronic switch K3 and the 4th electronic switch K4, realize the reduced output voltage of the different amplitude of chopper circuit.
System connection diagram as shown in Figure 2.
Electronic switch K1, K2, K3, K4 can be MOSFET, also can be the controlled rapid semiconductor devices turned on and off such as IGBT.
The boosting rectifier control process of bidirectional, dc chopper circuit as shown in Figure 3, by control circuit board sampling circuit current signal as control current inner loop, to sample voltage signal on the second electric capacity C2 as control voltage outer shroud, to be controlled by PI or P controls, realize booster circuit burning voltage and export.As shown in Figure 4, straight line is the voltage of energy storage energy storage battery system to simulation result, above line be the output voltage of double-loop control chopper circuit.Simulation waveform can be found out, after the control of very short time, the stable operation of discharge system load side voltage, achieves energy-storage system and run the electric discharge of load, show propose topology and control method effective and feasible.
The step-down control procedure of bidirectional, dc chopper circuit of the present invention as shown in Figure 5, by current signal in control circuit board sampling circuit as control current inner loop, to sample voltage signal on the first electric capacity C1 as control voltage outer shroud, controlled by PI or P control, realize booster circuit burning voltage and export.As shown in Figure 6, in Fig. 6, straight line is DC bus-bar voltage to simulation result above, and the line below in Fig. 6 is the voltage that double-loop control accumulation power supply side exports.Simulation waveform can be found out, after the control of very short time, energy storage side voltage stabilization run, achieve the charge operation of photovoltaic system to energy-storage system, show propose topology and control method effective and feasible.
Embodiment 2
Figure 7 shows that embodiments of the invention 2.Bidirectional, dc chopper circuit topology of the present invention is made up of the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the first energy storage inductor L1A, the second energy storage inductor L1B, the 3rd energy storage inductor L2A, the 4th energy storage inductor L2B, the first electronic switch K1, the second electronic switch K2, the 3rd electronic switch K3 and the 4th electronic switch K4, first leading-out terminal of the first electric capacity C1, first leading-out terminal of the first electronic switch K1, first leading-out terminal of the second electronic switch K2, first leading-out terminal of the 3rd electronic switch K3, first leading-out terminal of the 4th electronic switch K4 connects at the first tie point 1, second leading-out terminal of the 3rd electronic switch K3, first leading-out terminal of the second electric capacity C2 is connected at the second tie point 2 with first leading-out terminal of the 3rd energy storage inductor L2A, second leading-out terminal of the 4th electronic switch K4, first leading-out terminal of the 3rd electric capacity C3 is connected at the 3rd tie point 3 with first leading-out terminal of the first energy storage inductor L1A, second leading-out terminal of the 3rd energy storage inductor L2A, second leading-out terminal of the first energy storage inductor L1A, first leading-out terminal of the 4th electric capacity C4 connects at the 4th tie point 4, second leading-out terminal of the first electronic switch K1, second leading-out terminal of the second electric capacity C2 is connected at the 5th tie point 5 with first leading-out terminal of the 4th energy storage inductor L2B, second leading-out terminal of the second electronic switch K2, second leading-out terminal of the 3rd electric capacity C3 is connected at the 6th tie point 6 with first leading-out terminal of the second energy storage inductor L1B, second leading-out terminal of the first electric capacity C1, second leading-out terminal of the 4th electric capacity C4, second leading-out terminal of the 4th energy storage inductor L2B is connected at the 7th tie point 7 with second leading-out terminal of the second energy storage inductor L1B.
The boosting operation principle process analysis procedure analysis of crisscross parallel bidirectional, dc chopper circuit topology of the present invention is as follows.First the first electronic switch K1 and the second electronic switch K2 conducting is supposed, energy storage battery system is charged to the second energy storage inductor L1B and the 4th energy storage inductor L2B, energy storage battery system simultaneously by the 3rd electronic switch K3 and the 4th electronic switch K4 conducting to load discharge, then the first electronic switch K1 and the second electronic switch K2 turns off, and energy storage battery system, the second energy storage inductor L1B and the 4th energy storage inductor L2B are jointly to load discharge.Then the first electronic switch K1 and the second electronic switch K2 conducting, circulation step-up discharge works.By controlling the length of the first electronic switch K1 and the second electronic switch K2 ON time, the boosting realizing the different amplitude of energy storage battery system voltage exports.
The step-down operation principle process analysis procedure analysis of bidirectional, dc chopper circuit is as follows, when the 3rd electronic switch K3 and the 4th electronic switch K4 conducting, solar array, first energy storage inductor L1A and the 3rd energy storage inductor L2A charges to energy storage battery system jointly, when first electronic switch K1 and the second electronic switch K2 turns off, on second energy storage inductor L1B and the 4th energy storage inductor L2B, energy is by the first electronic switch K1 and the second electronic switch K2 conducting afterflow, continue to charge to energy storage battery system, then the 3rd electronic switch K3 and the 4th electronic switch K4 conducting, circulate above pressure reduction.By controlling the length of the 3rd electronic switch K3 and the 4th electronic switch K4 ON time, realize the step-down charging of the different amplitude of energy storage battery system voltage.
Embodiment 3
Fig. 8 is embodiments of the invention 3.Bidirectional, dc chopper circuit topology of the present invention is made up of the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the second energy storage inductor L1B, the 3rd energy storage inductor L2A, the 4th energy storage inductor L2B, the first diode D1, the second diode D2, the 3rd diode D3, the first electronic switch K1, the second electronic switch K2, the 3rd electronic switch K3, first leading-out terminal of the first electric capacity C1, first leading-out terminal of the first electronic switch K1, first leading-out terminal of the second electronic switch K2, first leading-out terminal of the 3rd electronic switch K3, first leading-out terminal of the first diode D1, first leading-out terminal of the second diode D2, second leading-out terminal of the 3rd diode D3 connects at the first tie point 1, first leading-out terminal of the 3rd diode D3, second leading-out terminal of the 3rd electronic switch K3, first leading-out terminal of the second electric capacity C2 is connected at the second tie point 2 with first leading-out terminal of the 3rd energy storage inductor L2A, first leading-out terminal of the 3rd electric capacity C3, second leading-out terminal of the 3rd energy storage inductor L2A, first leading-out terminal of the 4th electric capacity C4 connects at the 4th tie point 4, second leading-out terminal of the first electronic switch K1, second leading-out terminal of the first diode D1, second leading-out terminal of the second electric capacity C2 is connected at the 5th tie point 5 with first leading-out terminal of the 4th energy storage inductor L2B, second leading-out terminal of the second electronic switch K2, second leading-out terminal of the second diode D2, second leading-out terminal of the 3rd electric capacity C3 is connected at the 6th tie point 6 with first leading-out terminal of the second energy storage inductor L1B, second leading-out terminal of the first electric capacity C1, second leading-out terminal of the 4th electric capacity C4, second leading-out terminal of the 4th energy storage inductor L2B is connected at the 7th tie point 7 with second leading-out terminal of the second energy storage inductor L1B.
The boosting operation principle process analysis procedure analysis of crisscross parallel bidirectional, dc chopper circuit topology of the present invention is as follows.First the first electronic switch K1 and the second electronic switch K2 conducting is supposed, energy storage battery system is charged to the second energy storage inductor L1B and the 4th energy storage inductor L2B, energy storage battery system passes through the 3rd diode D3 afterflow to load discharge simultaneously, then the first electronic switch K1 and the second electronic switch K2 turns off, and energy storage battery system, the second energy storage inductor L1B and the 4th energy storage inductor L2B are jointly to load discharge.Then the first electronic switch K1 and the second electronic switch K2 conducting, circulation step-up discharge works.By controlling the length of the first electronic switch K1 and the second electronic switch K2 ON time, the boosting realizing the different amplitude of energy storage battery system voltage exports.
The step-down operation principle process analysis procedure analysis of bidirectional, dc chopper circuit is as follows, during the 3rd electronic switch K3 conducting, solar array and the 3rd energy storage inductor L2A charge to energy storage battery system jointly, when 3rd electronic switch K3 turns off, on second energy storage inductor L1B and the 4th energy storage inductor L2B, energy is by the first electronic switch K1 and the second electronic switch K2 conducting afterflow, continue to energy storage battery system charging, then the 3rd electronic switch K3 conducting, circulate above pressure reduction.By controlling the length of the 3rd electronic switch K3 ON time, realize the step-down charging of the different amplitude of energy storage battery system voltage.
Embodiment 4
Fig. 9 is embodiments of the invention 4, bidirectional, dc chopper circuit topology of the present invention is by the first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, 4th electric capacity C4, n-th electric capacity Cn, first energy storage inductor L1A, second energy storage inductor L1B, 3rd energy storage inductor L2A, 4th energy storage inductor L2B, the n-th 2 energy storage inductor Ln2A, the n-th 1 energy storage inductor Ln1B, first diode D1, second diode D2, 3rd diode D3, 4th diode D4, the n-th 1 diode Dn1, the n-th 2 diode Dn2, first electronic switch K1, second electronic switch K2, 3rd electronic switch K3, 4th electronic switch K4, the n-th 1 electronic switch Kn1 and the n-th 2 electronic switch Kn2 form, first leading-out terminal of the first electric capacity C1, first leading-out terminal of the first electronic switch K1, first leading-out terminal of the second electronic switch K2, first leading-out terminal of the 3rd electronic switch K3, first leading-out terminal of the 4th electronic switch K4, first leading-out terminal of the first diode D1, first leading-out terminal of the second diode D2, second leading-out terminal of the 3rd diode D3, second leading-out terminal of the 4th diode D4, first leading-out terminal of the n-th 1 diode Dn1, second leading-out terminal of the n-th 2 diode Dn2 connects at the first tie point 1, first leading-out terminal of the 3rd diode D3, second leading-out terminal of the 3rd electronic switch K3, first leading-out terminal of the second electric capacity C2 is connected at the second tie point 2 with first leading-out terminal of the 3rd energy storage inductor L2A, first leading-out terminal of the 4th diode D4, second leading-out terminal of the 4th electronic switch K4, first leading-out terminal of the 3rd electric capacity C3 is connected at the 3rd tie point 3 with first leading-out terminal of the first energy storage inductor L1A, first leading-out terminal of the n-th 2 diode Dn2, second leading-out terminal of the n-th 2 electronic switch Kn2, first leading-out terminal of the n-th electric capacity Cn is connected at the n-th tie point n with first leading-out terminal of the n-th 2 energy storage inductor Ln2A, second leading-out terminal of the 3rd energy storage inductor L2A, second leading-out terminal of the first energy storage inductor L1A, second leading-out terminal of the n-th 2 energy storage inductor Ln2A, first leading-out terminal of the 4th electric capacity C4 connects at the 4th tie point 4, second leading-out terminal of the first electronic switch K1, second leading-out terminal of the first diode D1, second leading-out terminal of the second electric capacity C2 is connected at the 5th tie point 5 with first leading-out terminal of the 4th energy storage inductor L2B, second leading-out terminal of the second electronic switch K2, second leading-out terminal of the second diode D2, second leading-out terminal of the 3rd electric capacity C3 is connected at the 6th tie point 6 with first leading-out terminal of the second energy storage inductor L1B, second leading-out terminal of the n-th 1 electronic switch Kn1, second leading-out terminal of the n-th 1 diode Dn1, first leading-out terminal of second leading-out terminal of the n-th electric capacity Cn and the n-th 1 energy storage inductor Ln1B is connected at the n-th 1 tie point n1, second leading-out terminal of the first electric capacity C1, second leading-out terminal of the 4th electric capacity C4, second leading-out terminal of the 4th energy storage inductor L2B, second leading-out terminal of the second energy storage inductor L1B, second leading-out terminal of the n-th 1 energy storage inductor Ln1B connects at the 7th tie point 7.N, n1, n2 be greater than 2 positive integer, between the first tie point 1 and the 7th tie point 7, n brachium pontis is in parallel, and between the first tie point 1 and the 4th tie point 4, n brachium pontis is in parallel, has n electric capacity connection in the middle of two brachium pontis.
Claims (10)
1. a space crisscross parallel bidirectional, dc chopper circuit topology, it is characterized in that: described crisscross parallel bidirectional, dc chopper circuit topology is by the first electric capacity (C1), second electric capacity (C2), 3rd electric capacity (C3), 4th electric capacity (C4), first energy storage inductor (L1A), second energy storage inductor (L1B), 3rd energy storage inductor (L2A), 4th energy storage inductor (L2B), first diode (D1), second diode (D2), 3rd diode (D3), 4th diode (D4), first electronic switch (K1), second electronic switch (K2), 3rd electronic switch (K3) and the 4th electronic switch (K4) composition, first leading-out terminal of the first electric capacity (C1), first leading-out terminal of the first electronic switch (K1), first leading-out terminal of the second electronic switch (K2), first leading-out terminal of the 3rd electronic switch (K3), first leading-out terminal of the 4th electronic switch (K4), first leading-out terminal of the first diode (D1), first leading-out terminal of the second diode (D2), second leading-out terminal of the 3rd diode (D3) is connected at the first tie point (1) with the second leading-out terminal of the 4th diode (D4), first leading-out terminal of the 3rd diode (D3), second leading-out terminal of the 3rd electronic switch (K3), first leading-out terminal of the second electric capacity (C2) is connected at the second tie point (2) with the first leading-out terminal of the 3rd energy storage inductor (L2A), first leading-out terminal of the 4th diode (D4), second leading-out terminal of the 4th electronic switch (K4), first leading-out terminal of the 3rd electric capacity (C3) is connected at the 3rd tie point (3) with the first leading-out terminal of the first energy storage inductor (L1A), second leading-out terminal of the 3rd energy storage inductor (L2A), second leading-out terminal of the first energy storage inductor (L1A), first leading-out terminal of the 4th electric capacity (C4) connects at the 4th tie point (4), second leading-out terminal of the first electronic switch (K1), second leading-out terminal of the first diode (D1), second leading-out terminal of the second electric capacity (C2) is connected at the 5th tie point (5) with the first leading-out terminal of the 4th energy storage inductor (L2B), second leading-out terminal of the second electronic switch (K2), second leading-out terminal of the second diode (D2), second leading-out terminal of the 3rd electric capacity (C3) is connected at the 6th tie point (6) with the first leading-out terminal of the second energy storage inductor (L1B), second leading-out terminal of the first electric capacity (C1), second leading-out terminal of the 4th electric capacity (C4), second leading-out terminal of the 4th energy storage inductor (L2B) is connected at the 7th tie point (7) with the second leading-out terminal of the second energy storage inductor (L1B).
2. a space crisscross parallel bidirectional, dc chopper circuit topology, is characterized in that: described crisscross parallel bidirectional, dc chopper circuit topology is made up of the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), the first energy storage inductor (L1A), the second energy storage inductor (L1B), the 3rd energy storage inductor (L2A), the 4th energy storage inductor (L2B), the first electronic switch (K1), the second electronic switch (K2), the 3rd electronic switch (K3) and the 4th electronic switch (K4), first leading-out terminal of the first electric capacity (C1), first leading-out terminal of the first electronic switch (K1), first leading-out terminal of the second electronic switch (K2), first leading-out terminal of the 3rd electronic switch (K3), first leading-out terminal of the 4th electronic switch (K4) connects at the first tie point (1), second leading-out terminal of the 3rd electronic switch (K3), first leading-out terminal of the second electric capacity (C2) is connected at the second tie point (2) with the first leading-out terminal of the 3rd energy storage inductor (L2A), second leading-out terminal of the 4th electronic switch (K4), first leading-out terminal of the 3rd electric capacity (C3) is connected at the 3rd tie point (3) with the first leading-out terminal of the first energy storage inductor (L1A), second leading-out terminal of the 3rd energy storage inductor (L2A), second leading-out terminal of the first energy storage inductor (L1A), first leading-out terminal of the 4th electric capacity (C4) connects at the 4th tie point (4), second leading-out terminal of the first electronic switch (K1), second leading-out terminal of the second electric capacity (C2) is connected at the 5th tie point (5) with the first leading-out terminal of the 4th energy storage inductor (L2B), second leading-out terminal of the second electronic switch (K2), second leading-out terminal of the 3rd electric capacity (C3) is connected at the 6th tie point (6) with the first leading-out terminal of the second energy storage inductor (L1B), second leading-out terminal of the first electric capacity (C1), second leading-out terminal of the 4th electric capacity (C4), second leading-out terminal of the 4th energy storage inductor (L2B) is connected at the 7th tie point (7) with the second leading-out terminal of the second energy storage inductor (L1B).
3. a space crisscross parallel bidirectional, dc chopper circuit topology, it is characterized in that: described crisscross parallel bidirectional, dc chopper circuit topology is by the first electric capacity (C1), second electric capacity (C2), 3rd electric capacity (C3), 4th electric capacity (C4), second energy storage inductor (L1B), 3rd energy storage inductor (L2A), 4th energy storage inductor (L2B), first diode (D1), second diode (D2), 3rd diode (D3), first electronic switch (K1), second electronic switch (K2), 3rd electronic switch (K3) composition, first leading-out terminal of the first electric capacity (C1), first leading-out terminal of the first electronic switch (K1), first leading-out terminal of the second electronic switch (K2), first leading-out terminal of the 3rd electronic switch (K3), first leading-out terminal of the first diode (D1), first leading-out terminal of the second diode (D2), second leading-out terminal of the 3rd diode (D3) connects at the first tie point (1), first leading-out terminal of the 3rd diode (D3), second leading-out terminal of the 3rd electronic switch (K3), first leading-out terminal of the second electric capacity (C2) is connected at the second tie point (2) with the first leading-out terminal of the 3rd energy storage inductor (L2A), first leading-out terminal of the 3rd electric capacity (C3), second leading-out terminal of the 3rd energy storage inductor (L2A), first leading-out terminal of the 4th electric capacity (C4) connects at the 4th tie point (4), second leading-out terminal of the first electronic switch (K1), second leading-out terminal of the first diode (D1), second leading-out terminal of the second electric capacity (C2) is connected at the 5th tie point (5) with the first leading-out terminal of the 4th energy storage inductor (L2B), second leading-out terminal of the second electronic switch (K2), second leading-out terminal of the second diode (D2), second leading-out terminal of the 3rd electric capacity (C3) is connected at the 6th tie point (6) with the first leading-out terminal of the second energy storage inductor (L1B), second leading-out terminal of the first electric capacity (C1), second leading-out terminal of the 4th electric capacity (C4), second leading-out terminal of the 4th energy storage inductor (L2B) is connected at the 7th tie point (7) with the second leading-out terminal of the second energy storage inductor (L1B).
4. a space crisscross parallel bidirectional, dc chopper circuit topology, it is characterized in that: described crisscross parallel bidirectional, dc chopper circuit topology is by the first electric capacity (C1), second electric capacity (C2), 3rd electric capacity (C3), 4th electric capacity (C4), n-th electric capacity (Cn), first energy storage inductor (L1A), second energy storage inductor (L1B), 3rd energy storage inductor (L2A), 4th energy storage inductor (L2B), the n-th 2 energy storage inductors (Ln2A), the n-th 1 energy storage inductors (Ln1B), first diode (D1), second diode (D2), 3rd diode (D3), 4th diode (D4), the n-th 1 diodes (Dn1), the n-th 2 diodes (Dn2), first electronic switch (K1), second electronic switch (K2), 3rd electronic switch (K3), 4th electronic switch (K4), the n-th 1 electronic switches (Kn1) and the n-th 2 electronic switch (Kn2) compositions, first leading-out terminal of the first electric capacity (C1), first leading-out terminal of the first electronic switch (K1), first leading-out terminal of the second electronic switch (K2), first leading-out terminal of the 3rd electronic switch (K3), first leading-out terminal of the 4th electronic switch (K4), first leading-out terminal of the first diode (D1), first leading-out terminal of the second diode (D2), second leading-out terminal of the 3rd diode (D3), second leading-out terminal of the 4th diode (D4), first leading-out terminal of the n-th 1 diodes (Dn1), second leading-out terminal of the n-th 2 diodes (Dn2) connects at the first tie point (1), the first leading-out terminal of the 3rd diode (D3), second leading-out terminal of the 3rd electronic switch (K3), first leading-out terminal of the second electric capacity (C2) is connected at the second tie point (2) with the first leading-out terminal of the 3rd energy storage inductor (L2A), the first leading-out terminal of the 4th diode (D4), second leading-out terminal of the 4th electronic switch (K4), first leading-out terminal of the 3rd electric capacity (C3) is connected at the 3rd tie point (3) with the first leading-out terminal of the first energy storage inductor (L1A), the first leading-out terminal of the n-th 2 diodes (Dn2), second leading-out terminal of the n-th 2 electronic switches (Kn2), first leading-out terminal of the n-th electric capacity (Cn) is connected at the n-th tie point (n) with the first leading-out terminal of the n-th 2 energy storage inductors (Ln2A), the second leading-out terminal of the 3rd energy storage inductor (L2A), second leading-out terminal of the first energy storage inductor (L1A), second leading-out terminal of the n-th 2 energy storage inductors (Ln2A), first leading-out terminal of the 4th electric capacity (C4) connects at the 4th tie point (4), the second leading-out terminal of the first electronic switch (K1), second leading-out terminal of the first diode (D1), second leading-out terminal of the second electric capacity (C2) is connected at the 5th tie point (5) with the first leading-out terminal of the 4th energy storage inductor (L2B), the second leading-out terminal of the second electronic switch (K2), second leading-out terminal of the second diode (D2), second leading-out terminal of the 3rd electric capacity (C3) is connected at the 6th tie point (6) with the first leading-out terminal of the second energy storage inductor (L1B), the second leading-out terminal of the n-th 1 electronic switches (Kn1), second leading-out terminal of the n-th 1 diodes (Dn1), first leading-out terminal of the second leading-out terminal of the n-th electric capacity (Cn) and the n-th 1 energy storage inductors (Ln1B) is connected at the n-th 1 tie points (n1), the second leading-out terminal of the first electric capacity (C1), second leading-out terminal of the 4th electric capacity (C4), second leading-out terminal of the 4th energy storage inductor (L2B), second leading-out terminal of the second energy storage inductor (L1B), second leading-out terminal of the n-th 1 energy storage inductors (Ln1B) connects at the 7th tie point (7), n, n1, n2 be greater than 2 positive integer, between first tie point (1) and the 7th tie point (7), n brachium pontis is in parallel, between first tie point (1) and the 4th tie point (4), n brachium pontis is in parallel, has n electric capacity to connect in the middle of two brachium pontis.
5., according to the space crisscross parallel bidirectional, dc chopper circuit topology of Claims 1-4 described in any one, it is characterized in that: described the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), the first energy storage inductor (L1A), the second energy storage inductor (L1B), the 3rd energy storage inductor (L2A), the 4th energy storage inductor (L2B), the 3rd diode (D3), the 4th diode (D4), the first electronic switch (K1), the second electronic switch (K2) form booster circuit, current signal sum on sampling circuit samples second energy storage inductor (L1B) of control system and the 4th energy storage inductor (L2B) controls as inner ring, the voltage signal of the 4th electric capacity (C4) of sampling controls as outer shroud, the length of the turn-on and turn-off time of the first electronic switch (K1) and the second electronic switch (K2) is regulated by controller, and the length of the equal not ON time of the first electronic switch (K1) and the second electronic switch (K2), realize line voltage distribution boosting, realize energy stabilization to export, complete the electric discharge of energy storage battery system to external loading, by controlling the length of the first electronic switch (K1) and the second electronic switch (K2) ON time, the length of the first electronic switch (K1) and the second electronic switch (K2) not ON time, the boosting realizing the different amplitude of energy storage battery system voltage exports.
6. according to Claims 1-4 any one described in space with crisscross parallel bidirectional, dc chopper circuit topology, it is characterized in that: described the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), the first energy storage inductor (L1A), the second energy storage inductor (L1B), the 3rd energy storage inductor (L2A), the 4th energy storage inductor (L2B), the first diode (D1), the second diode (D2), the 3rd electronic switch (K3) and the 4th electronic switch (K4) form reduction voltage circuit, sampling circuit samples first energy storage inductor (L1A) of control system and the current signal sum of the 3rd energy storage inductor (L2A) control as inner ring, the voltage signal of the first electric capacity (C1) of sampling controls as outer shroud, the turn-on and turn-off time of the 3rd electronic switch (K3) and the 4th electronic switch (K4) is regulated to realize line voltage distribution step-down by controller, realize energy stabilization to export, complete the charging of solar panel to energy storage battery system, by controlling the turn-on and turn-off time length of the 3rd electronic switch (K3) and the 4th electronic switch (K4), realize the reduced output voltage of the different amplitude of chopper circuit.
7. according to space according to claim 5 crisscross parallel bidirectional, dc chopper circuit topology, it is characterized in that: described control system comprises voltage and current sample circuit, control algolithm circuit, drive circuit, voltage and current sample circuit gathers voltage signal and the line current signal at bidirectional, dc chopper circuit two ends, voltage and current sample circuit is connected with control algolithm circuit, control algolithm circuit is connected to drive circuit, drive circuit is connected to the first electronic switch (K1) respectively, second electronic switch (K2), 3rd electronic switch (K3) and the 4th electronic switch (K4).
8. according to space according to claim 6 crisscross parallel bidirectional, dc chopper circuit topology, it is characterized in that: described control system comprises voltage and current sample circuit, control algolithm circuit, drive circuit, voltage and current sample circuit gathers voltage signal and the line current signal at bidirectional, dc chopper circuit two ends, voltage and current sample circuit is connected with control algolithm circuit, control algolithm circuit is connected to drive circuit, drive circuit is connected to the first electronic switch (K1) respectively, second electronic switch (K2), 3rd electronic switch (K3) and the 4th electronic switch (K4).
9. according to Claims 1-4 any one described in space with crisscross parallel bidirectional, dc chopper circuit topology, it is characterized in that: described the first energy storage inductor (L1A) and the second energy storage inductor (L1B) coupling, the 3rd energy storage inductor (L2A) and the coupling of the 4th energy storage inductor (L2B).
10. according to Claims 1-4 any one described in space with crisscross parallel bidirectional, dc chopper circuit topology, it is characterized in that: described boost chopper and buck circuit share same current sampling circuit.
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| CN107404232A (en) * | 2017-06-23 | 2017-11-28 | 深圳市航天新源科技有限公司 | A kind of two-way DC DC converters |
| CN107404232B (en) * | 2017-06-23 | 2019-09-10 | 深圳市航天新源科技有限公司 | A kind of bidirectional DC-DC converter |
| US11398776B2 (en) | 2020-03-30 | 2022-07-26 | Delta Electronics, Inc. | Power conversion device |
| WO2023087121A1 (en) * | 2021-11-18 | 2023-05-25 | Universidad Técnica Federico Santa María | Switch cell comprising an internal power link |
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