CN108574305A - Cascaded high-voltage frequency converter power cell load platform with feedback function - Google Patents
Cascaded high-voltage frequency converter power cell load platform with feedback function Download PDFInfo
- Publication number
- CN108574305A CN108574305A CN201810494697.0A CN201810494697A CN108574305A CN 108574305 A CN108574305 A CN 108574305A CN 201810494697 A CN201810494697 A CN 201810494697A CN 108574305 A CN108574305 A CN 108574305A
- Authority
- CN
- China
- Prior art keywords
- voltage
- phase
- power cell
- power
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of cascaded high-voltage frequency converter power cell load platform with feedback function, including subject power cell, H bridges controllable rectifier module, DC capacitor, three-phase grid inverter module and control system；Control system acquires the voltage signal of the electric current and DC capacitor both ends of subject power cell output end by sample circuit, according to this voltage and current sampled signal and given power factor output drive signal to H bridge controllable rectifier modules, to its input current according to the power factor controlling of setting, to realize the Reactive Power Control of subject power cell；Control system acquires alternating current net side three-phase voltage and electric current by sample circuit, its active power is controlled to three-phase grid inverter module according to sampled signal output drive signal, to realize the active power controller to being tested power cell, the real simulation to subject power cell load is realized.
Description
Technical field
The present invention relates to load test technical fields in cascaded high-voltage frequency converter power cell factory, and in particular to a kind of tool
There is the cascaded high-voltage frequency converter power cell load platform of feedback function.
Background technology
In order to ensure that the product quality of high-voltage cascade frequency converter, high-voltage cascade frequency converter will carry out power list before manufacture
The load test of member.In high-voltage cascade type frequency converter industry, there are mainly two types of the mode of loading of power cell:Resistance-inductance is negative
It carries, feedback type load.
Ohmic load is usually to be made of the series connection of several power resistors and parallel connection, reaches different resistances in parallel by series connection
Value configures the single-phase reactor of different induction value, to adapt to the output current value and power of different capacity unit on this basis
Factor.Each resistance-inductance platform generally requires prodigious place and very high radiating requirements, while a large amount of waste of energy exist
In the fever of resistance.Fig. 1 show conventional load electrical schematic diagram, and three-phase alternating-current supply is input to power cell, through power list
Member is converted to 0~50Hz AC powers and is output to load.Fig. 2 show subject power cell topological diagram, three phase mains input warp
Overpower unit rectifier diode is converted to direct current, and by the inversion of power cell H bridges, it is defeated to be converted into 0~50Hz AC powers
Go out, output voltage is applied on ohmic load or inductive load；Output current is adjusted by changing the impedance magnitude of load
Size, achieve the purpose that aging.
In a kind of patent " grid-connected feedback device of high-voltage cascade transducer power unit " (Authorization Notice No.：202353232U)
" power cell ageing tester and method " (application publication number：CN102928719A the feedback type load platform introduced in)
To form Y types connection access power grid using three power cells simultaneously, need three power cells that could work, for different work(
The power cell of rate grade is only capable of carrying out the unit busy experiment of small-power grade, and the flexibility of load is poor.It is " a kind of in patent
Grid-connected feedback device (the application publication number of high-voltage frequency converter：CN103023063A the feedback type load introduced in) " uses whole height
The grid-connected progress feedback test of voltage frequency changer carries out complete machine full power test, danger in the case where power cell does not have power test
Dangerous coefficient is higher, and this method carries out complete machine full power test after being only applicable to power cell power test.
Invention content
It is an object of the invention to overcome deficiency in the prior art, the cascaded high-voltage frequency conversion with feedback function is proposed
Device power cell load platform solves the technical issues of feedback type loads flexibility and bad adaptability in the prior art.
In order to solve the above technical problems, the present invention provides a kind of cascaded high-voltage frequency converter power with feedback function
Unit loads platform, characterized in that including subject power cell, H bridges controllable rectifier module, DC capacitor, three-phase grid inversion
Module and control system；
The input terminal for being tested power cell connects AC network, after being tested the output end series connection single-phase reactor of power cell
The input terminal for connecting H bridge controllable rectifier modules, connection three-phase is simultaneously after DC capacitor in the output end parallel connection of H bridge controllable rectifier modules
The DC side of net inverter module, three-phase grid inverter module exchange side series connection three-phase reactor after be incorporated to AC network, formed
Energy closed-loop path；
Control system acquires the voltage of the electric current and DC capacitor both ends of subject power cell output end by sample circuit
Signal, according to this voltage and current sampled signal and given power factor output drive signal to H bridge controllable rectifier modules, to it
Input current is tested the Reactive Power Control of power cell with realization according to the power factor controlling of setting；
Control system acquires alternating current net side three-phase voltage and electric current by sample circuit, according to sampled signal output driving
Signal controls its active power to three-phase grid inverter module, to realize the active power control to being tested power cell
System.
Preferably, sample circuit includes subject power cell output current sample circuit, H bridge controllable rectifier modules output electricity
The three-phase voltage sample circuit and current sampling circuit of sample circuit, AC network, sample circuit is pressed to input each sampled signal
Control system.
Preferably, control system includes H bridge feedback control units, and H bridge feedback control units include pi regulator, PF adjustings
Device, PR adjusters and H bridge pulse administrative units, by the voltage u on DC capacitordcWith given value UdcrefIt is compared, error warp
It is given as watt current after crossing pi regulatorOutput, watt current is givenGiven power-factor angleAnd subject
The lock phase angle theta of power cell output voltage inputs PF adjusters, obtains referring to sinusoidal current signal iref, by irefWith subject power
Unit output current i is compared, and error passes through PR adjusters, and output is used as voltage modulation signal ud, voltage modulated is believed
Number udH bridge pulse administrative units are inputted, corresponding drive signal are generated, to drive H bridge controllable rectifier modules.
Preferably, calculation formula is in PF adjusters：
Preferably, lock phase angle theta is that the sinusoidal angle [alpha] for the pwm pulse for being tested power cell adds delay angle γ.
Preferably, control system includes three-phase inversion feedback control unit, and three-phase inversion feedback control unit includes three-phase
The three-phase voltage of AC network and electric current are input to three-phase decoupling unit and carry out electricity by decoupling unit, three-phase pulse administrative unit
Closed loop three-phase decoupling control is flowed, three-phase reference voltage is generated, by reference voltage output to three-phase pulse control unit, generates and corresponds to
Drive signal, to drive three-phase grid inverter module.
Preferably, the detailed process of three-phase decoupling unit progress current closed-loop three-phase decoupling control is：To three-phase voltage into
Horizontal lock obtains grid phase angle beta, while grid side voltage and current is carried out DQ transformation and respectively obtains ed、eqAnd id、iq, initially
Electric current idWith given value idrefCompare, obtained difference is exported through pi regulator, voltage value and the network voltage active component of output
edAnd iqω L relatively obtain voltage active component udref, equally, initial current iqWith given value iqrefCompare, compares the difference obtained
Value is exported through pi regulator, obtained voltage value and voltage power-less component eqAnd idω L relatively obtain voltage power-less component uqref,
To the u of gaineddref、uqrefIt carries out DQ inverse transformations and obtains three-phase reference voltage.
Compared with prior art, the advantageous effect of the invention reached is：The present invention is by controlling three-phase grid inversion mould
Block exchange survey electric current realize subject power cell active power of output control, while by the power of H bridge controllable rectifier modules because
Number realizes subject power cell output reactive power control, realizes the real simulation to subject power cell load.
Description of the drawings
Fig. 1 is that conventional load tests electrical schematic diagram；
Fig. 2 is the circuit diagram of tradition subject power cell；
Fig. 3 is the electrical schematic diagram of load platform of the present invention；
Fig. 4 is H bridge controllable rectifier module circuit diagrams；
Fig. 5 is three-phase grid inverter module circuit diagram；
Fig. 6 in order to control system control H bridges controllable rectifier module and three-phase grid inverter module schematic diagram；
Fig. 7 is that subject power cell exports PWM waveform figure.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
Since cascaded high-voltage frequency converter is formed by multiple cascade of power units, frequency converter output driving load is usually different
Walk motor.And the input power factor of motor is usually 0.85~0.9 (lag).It is negative in order to adequately simulate motor
It carries, power cell output power includes not only that active power will also include reactive power, the usual value of power factor 0.85~0.9
Lag.
In order to realize the real simulation of motor load, the cascaded high-voltage frequency converter work(with feedback function of the invention
Rate unit loads platform, schematic block circuit diagram is as shown in figure 3, including subject power cell, H bridges controllable rectifier module, direct current
Capacitance, three-phase grid inverter module and control system；
The input terminal for being tested power cell connects AC network, after being tested the output end series connection single-phase reactor of power cell
The input terminal for connecting H bridge controllable rectifier modules, connection three-phase is simultaneously after DC capacitor in the output end parallel connection of H bridge controllable rectifier modules
The DC side of net inverter module, three-phase grid inverter module exchange side series connection three-phase reactor after be incorporated to AC network, formed
Energy closed-loop path；
Control system acquires the voltage of the electric current and DC capacitor both ends of subject power cell output end by sample circuit
Signal, according to this voltage and current sampled signal and given power factor output drive signal to H bridge controllable rectifier modules, to it
Input current is tested the Reactive Power Control of power cell with realization according to the power factor controlling of setting；
Control system acquires the three-phase voltage and electric current of AC network by sample circuit, according to sampled signal output driving
Signal controls its active power to three-phase grid inverter module, to realize the active power control to being tested power cell
System.
Sample circuit includes subject power cell output current sample circuit, the sampling of H bridge controllable rectifier module output voltages
The three-phase voltage sample circuit and current sampling circuit of circuit, alternating current net side, sample circuit is by each sampled signal input control
System.
Current sampling circuit is connected in series in circuit using current Hall element and is measured, and voltage sampling circuit passes through voltage
Hall element is parallel in circuit and measures.
The present invention control thinking be：It is tested power cell and absorbs energy from power grid, three-phase grid inverter module will be active
Power back off reaches energy-efficient purpose to power grid to realize the closed loop of energy.Since system loss is smaller, it is not considering
In the case of system loss, it is equal that active power is flowed through in each link (module) of entire feedback system, and control three-phase is simultaneously
The active power of net inverter module can be tested the active power of power cell output, i.e., by three-phase grid with indirect control
Inverter module, which carries out real power control, can realize the real power control of subject power cell.Since reactive power cannot pass through direct current component
It controls, therefore idle control is added in three-phase inversion module and cannot achieve idle control to being tested power cell.And H bridges are controllable
Rectification module provides active power for three-phase grid inverter module, if in control H bridge controllable rectifier module watt currents input
Meanwhile be added reactive current control, make the input current of H bridge controllable rectifier modules according to the power factor controlling of setting, make by
The output of examination power cell contains watt current and reactive current, you can realizes the power factor of subject power cell output setting
Electric current, simulate true motor load.
Wherein the circuit diagram of H bridges controllable rectifier module works as upper left as shown in figure 4, including the bridge circuit that 4 IGBT are constituted
When being connected with bottom right IGBT, high level is exported, when upper right and lower-left IGBT conductings, exports low level.When both the above or
When following two IGBT conductings, 0 level is exported.High and low, 0 level is sent out according to the waveform of Fig. 7, and direct current input AC can be realized
Output.It is exactly 4 IGBT driven by four road drive signals in H bridge controllable rectifier modules in simple terms, realizes to input
Exchange carries out rectification.This H bridge controllable rectifier module belongs to the prior art, in existing literature frequently with single-phase controlled rectification voltage,
Current double closed-loop strategy realizes watt current control.The power factor controlling of conventional H bridge controllable rectifier module is 1, is not included
Reactive power, in order to make the electric current that H bridge controllable rectifier modules export meet the control of watt current and power factor in the present invention
It is required that the voltage of the electric current of control system acquisition subject power cell output end, DC capacitor both ends, in single-phase voltage, electric current
Increase power factor controlling on the basis of double-loop control strategy, carrying out power factor to the input of H bridge controllable rectifier modules closes
Ring controls.
Control system to H bridge controllable rectifier modules carry out power factor control, control principle block diagram as shown in fig. 6,
Detailed process is：Control system acquires the voltage u on DC capacitordcWith given value UdcrefIt is compared, error is adjusted by PI
It is given as watt current after deviceOutput, watt current is givenGiven power-factor angleAnd subject power cell
The lock phase angle theta input PF adjusters (i.e. power-factor regulator) of output voltage obtain referring to sinusoidal current signal iref, by iref
It is compared with subject power cell output current i, error passes through PR adjusters, realizes zero steady state error control, output is as electricity
Press modulated signal ud, by voltage modulation signal udIt is modulated with carrier signal, exports PWM modulation signal, which passes through
Four road drive signals are exported after processing, drive 4 IGBT of H bridge controllable rectifier modules, realize the input of H bridge controllable rectifier modules
Electric current according to setting power factor.
Wherein given value UdcrefNot less than input side voltage peak, input side voltage is power cell output voltage, such as
Shown in Fig. 7.Power cell output voltage peak value is power cell DC bus-bar voltage, works normally lower power cell DC bus
Voltage is 820V, can use 820V herein.
Calculation formula is in PF adjusters：Its specific theory is meant that：Known active current DC
ComponentSince power factor is the ratio between watt current and apparent current, then giving current peak is：After-power because
Number angle is to lock phase angle theta and given power-factor angleDifferenceThe reference sinusoidal current signal then exported isThe sinusoidal current signal value is the given value for being tested power cell and needing output current, is it is expected to reach
Value, closed-loop control is formed by PR adjusters and feedback.Feedback is set to be infinitely close to the given value.
The lock phase angle theta is to be tested the actual angle of power cell output voltage.Since subject power cell output is exchange
(have just have negative), frequency 50Hz, but be not sine wave, it is the waveform (PWM wave) of low and high level, as shown in Figure 7.Control system
It is more difficult into horizontal lock to the PWM wave of subject power cell output, in order to obtain accurate lockin signal, in subject power list
Increase system delay angle γ on the basis of the sinusoidal angle [alpha] of the pwm pulse of member, can get the sine of H bridge controllable rectifier module controls
Lock phase angle theta.This sinusoidal angle [alpha] is known to control system, and control system is according to the sine angle, frequency, modulation ratio information tune
Pwm pulse is generated after system and is sent to subject power cell, this is seldom repeated for the prior art.System delay angle γ refers to controlling
System is sent to subject power cell, the PWM that subject power cell is sent according to control system according to the pwm pulse signal of modulation
Signal sends out the pulse of driving IGBT, and to subject power cell output voltage, there are one systematic delays for this process, i.e.,
There are certain delay angle γ, which is solid for the angle of pwm pulse signal and the angle of subject power cell output voltage
Fixed angle can be obtained by measuring.
The circuit diagram of three-phase grid inverter module by six road drive signals as shown in figure 5, drive three-phase grid inversion mould
6 IGBT in the block realize that by DC inversion be exchange, the power of output are made to meet the control requirement of active power, specific electricity
Road principle seldom repeats herein referring to the prior art.In the embodiment of the present invention, control system acquires the three-phase voltage of AC network
It is inverse to three-phase grid using current closed-loop three-phase decoupling control policy with electric current (the alternatively referred to as voltage and current of grid side)
The active power for becoming module is controlled.
The three-phase decoupling control policy of active outer shroud, current inner loop is control strategy common in the art, reference can be made to
A kind of grid-connected feedback device (application publication number of high-voltage frequency converter of patent：CN103023063A).Detailed process is as shown in Figure 6：Control
System acquisition alternating current net side voltage and current processed obtains grid phase angle beta to network voltage into horizontal lock, while by grid side
Voltage and current carries out DQ transformation and respectively obtains network voltage active component ed, network voltage reactive component eqIt is active with power network current
Component id, power network current reactive component iq, initial power network current active component idWith active component given value idref(the given value
According to active power given value and network voltage active component edCalculate) compare, obtained difference is exported through pi regulator,
The voltage value of output and network voltage active component edAnd iqω L relatively obtain reference voltage active component udref, wherein ω is
Angular frequency, L are output reactance device inductance value；
Equally, initial power network current reactive component iqWith reactive component of current given value iqrefCompare, compares the difference obtained
It is exported through pi regulator, obtained voltage value and voltage power-less component eqAnd idω L relatively obtain reference voltage reactive component
uqref, to the u of gaineddref、uqrefIt carries out DQ inverse transformations and obtains three-phase reference voltage；PWM arteries and veins is formed according to three-phase reference voltage
Punching, generates drive signal, and pwm pulse is sent to three-phase grid inverter module, controls and drive three-phase grid inverse by control system
Become 6 IGBT of module.
Above-mentioned DQ transformation and DQ inverse transformations belong to the prior art, and the process of transformation can be found in the prior art, herein not
It repeats more.
It includes independent controller to be tested power cell, which can be read the busbar voltage and dependent failure of this unit
Information, and be uploaded to control system, i.e. uplink signal.Controller obtains pwm pulse signal from control system, generates PWM outputs
Voltage, this is downlink signal.Uplink and downlink signals between subject power cell and master control system interact, and it is negative that this belongs to power cell
The conventional control of carrying platform, referring specifically to the prior art.
The present invention surveys electric current realization subject power cell active power of output by controlling the exchange of three-phase grid inverter module
Control, while subject power cell output reactive power control, realization pair are realized by the power factor of H bridge controllable rectifier modules
It is tested the real simulation of power cell load.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications, these improvements and modifications can also be made
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. the cascaded high-voltage frequency converter power cell load platform with feedback function, characterized in that including being tested power list
Member, H bridges controllable rectifier module, DC capacitor, three-phase grid inverter module and control system；
The input terminal for being tested power cell connects AC network, is connected after being tested the output end series connection single-phase reactor of power cell
The input terminal of H bridge controllable rectifier modules, connection three-phase grid is inverse after DC capacitor in the output end parallel connection of H bridge controllable rectifier modules
Become the DC side of module, is incorporated to AC network after the exchange side series connection three-phase reactor of three-phase grid inverter module, forms energy
Closed-loop path；
Control system acquires the voltage signal of the electric current and DC capacitor both ends of subject power cell output end by sample circuit,
According to this voltage and current sampled signal and given power factor output drive signal to H bridge controllable rectifier modules, it is inputted
Electric current is tested the Reactive Power Control of power cell with realization according to the power factor controlling of setting；
Control system acquires alternating current net side three-phase voltage and electric current by sample circuit, according to sampled signal output drive signal
Its active power is controlled to three-phase grid inverter module, to realize the active power controller to being tested power cell.
2. the cascaded high-voltage frequency converter power cell load platform according to claim 1 with feedback function, special
Sign is that sample circuit includes subject power cell output current sample circuit, H bridge controllable rectifier module output voltages sampling electricity
Road, AC network three-phase voltage sample circuit and current sampling circuit, sample circuit is by each sampled signal input control system.
3. the cascaded high-voltage frequency converter power cell load platform according to claim 1 with feedback function, special
Sign is that control system includes H bridge feedback control units, and H bridge feedback control units include pi regulator, PF adjusters, PR adjustings
Device and H bridge pulse administrative units, by the voltage u on DC capacitordcWith given value UdcrefIt is compared, error is adjusted by PI
It is given as watt current after deviceOutput, watt current is givenGiven power-factor angleAnd subject power list
The lock phase angle theta of first output voltage inputs PF adjusters, obtains referring to sinusoidal current signal iref, by irefIt is defeated with subject power cell
Go out electric current i to be compared, error passes through PR adjusters, and output is used as voltage modulation signal ud, by voltage modulation signal udInput
H bridge pulse administrative units, generate corresponding drive signal, to drive H bridge controllable rectifier modules.
4. the cascaded high-voltage frequency converter power cell load platform according to claim 3 with feedback function, special
Sign is that calculation formula is in PF adjusters：
5. the cascaded high-voltage frequency converter power cell load platform according to claim 3 with feedback function, special
Sign is that lock phase angle theta is that the sinusoidal angle [alpha] for the pwm pulse for being tested power cell adds delay angle γ.
6. the cascaded high-voltage frequency converter power cell load platform according to claim 1 with feedback function, special
Sign is that control system includes three-phase inversion feedback control unit, and three-phase inversion feedback control unit includes three-phase decoupling unit, three
The three-phase voltage of AC network and electric current are input to three-phase decoupling unit and carry out current closed-loop three-phase solution by phase pulse administrative unit
Coupling controls, and generates three-phase reference voltage and reference voltage output to three-phase pulse control unit is generated corresponding drive signal,
To drive three-phase grid inverter module.
7. the cascaded high-voltage frequency converter power cell load platform according to claim 6 with feedback function, special
Sign is that the detailed process that three-phase decoupling unit carries out current closed-loop three-phase decoupling control is：Three-phase voltage is obtained into horizontal lock
Grid phase angle beta, while grid side voltage and current is subjected to DQ transformation and respectively obtains ed、eqAnd id、iq, initial current idWith it is given
Value idrefCompare, obtained difference is exported through pi regulator, voltage value and the network voltage active component e of outputdAnd iqω L ratios
Relatively obtain voltage active component udref, ω is angular frequency, and L is output reactance device inductance value；Equally, initial current iqWith given value
iqrefCompare, compares the difference obtained and exported through pi regulator, obtained voltage value and voltage power-less component eqAnd idω L compare
Obtain voltage power-less component uqref, to the u of gaineddref、uqrefIt carries out DQ inverse transformations and obtains three-phase reference voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810494697.0A CN108574305B (en) | 2018-05-22 | 2018-05-22 | Cascaded high-voltage frequency converter power unit load platform with feedback function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810494697.0A CN108574305B (en) | 2018-05-22 | 2018-05-22 | Cascaded high-voltage frequency converter power unit load platform with feedback function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108574305A true CN108574305A (en) | 2018-09-25 |
| CN108574305B CN108574305B (en) | 2021-03-19 |
Family
ID=63572112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810494697.0A Active CN108574305B (en) | 2018-05-22 | 2018-05-22 | Cascaded high-voltage frequency converter power unit load platform with feedback function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108574305B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954817A (en) * | 2019-12-12 | 2020-04-03 | 云南电网有限责任公司临沧供电局 | Solid-state test platform and method for intelligent phase-change switch function test |
| CN112271911A (en) * | 2020-11-06 | 2021-01-26 | 西安爱科赛博电气股份有限公司 | Three-phase independent adjustable alternating current electronic load circuit and control method thereof |
| CN113064096A (en) * | 2021-03-22 | 2021-07-02 | 中国人民解放军海军工程大学 | Shore power test system based on medium-high voltage alternating current |
| CN113472191A (en) * | 2021-07-01 | 2021-10-01 | 浙江国研智能电气有限公司 | Soft switching inverter control method and system with any power factor |
| CN114172394A (en) * | 2021-11-05 | 2022-03-11 | 华南理工大学 | Control system and control method of energy-feedback type alternating current electronic load |
| CN115078790A (en) * | 2022-08-22 | 2022-09-20 | 艾乐德电子（南京）有限公司 | Alternating current electronic load device and triangular load implementation method thereof |
| CN115308515A (en) * | 2022-08-26 | 2022-11-08 | 天津电气科学研究院有限公司 | IGCT three-level power unit test system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496950A (en) * | 2011-11-11 | 2012-06-13 | 国电南京自动化股份有限公司 | Power unit grid-connected and feedback device for high-voltage concatenated frequency converter |
| CN103023063A (en) * | 2012-10-24 | 2013-04-03 | 国电南京自动化股份有限公司 | Grid-connection feedback device of high-voltage inverter and control method of grid-connection feedback device |
| US20150236615A1 (en) * | 2014-02-18 | 2015-08-20 | Delta Electronics (Shanghai) Co., Ltd. | Control device of power conversion unit and method of controlling power conversion unit |
| CN107894531A (en) * | 2017-11-21 | 2018-04-10 | 北京合力电气传动控制技术有限责任公司 | A kind of power cell test system |
-
2018
- 2018-05-22 CN CN201810494697.0A patent/CN108574305B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496950A (en) * | 2011-11-11 | 2012-06-13 | 国电南京自动化股份有限公司 | Power unit grid-connected and feedback device for high-voltage concatenated frequency converter |
| CN103023063A (en) * | 2012-10-24 | 2013-04-03 | 国电南京自动化股份有限公司 | Grid-connection feedback device of high-voltage inverter and control method of grid-connection feedback device |
| US20150236615A1 (en) * | 2014-02-18 | 2015-08-20 | Delta Electronics (Shanghai) Co., Ltd. | Control device of power conversion unit and method of controlling power conversion unit |
| CN107894531A (en) * | 2017-11-21 | 2018-04-10 | 北京合力电气传动控制技术有限责任公司 | A kind of power cell test system |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954817A (en) * | 2019-12-12 | 2020-04-03 | 云南电网有限责任公司临沧供电局 | Solid-state test platform and method for intelligent phase-change switch function test |
| US11366163B2 (en) | 2019-12-12 | 2022-06-21 | Lincang Power Supply Bureau Yunnan Power Grid Co., Ltd. | Solid testing platform and method for function testing of intelligent phase-change switch |
| CN112271911A (en) * | 2020-11-06 | 2021-01-26 | 西安爱科赛博电气股份有限公司 | Three-phase independent adjustable alternating current electronic load circuit and control method thereof |
| CN113064096A (en) * | 2021-03-22 | 2021-07-02 | 中国人民解放军海军工程大学 | Shore power test system based on medium-high voltage alternating current |
| CN113472191A (en) * | 2021-07-01 | 2021-10-01 | 浙江国研智能电气有限公司 | Soft switching inverter control method and system with any power factor |
| CN114172394A (en) * | 2021-11-05 | 2022-03-11 | 华南理工大学 | Control system and control method of energy-feedback type alternating current electronic load |
| CN114172394B (en) * | 2021-11-05 | 2023-08-22 | 华南理工大学 | Control system and control method for energy-feedback alternating current electronic load |
| CN115078790A (en) * | 2022-08-22 | 2022-09-20 | 艾乐德电子（南京）有限公司 | Alternating current electronic load device and triangular load implementation method thereof |
| CN115078790B (en) * | 2022-08-22 | 2022-11-04 | 艾乐德电子（南京）有限公司 | Alternating current electronic load device and triangular load implementation method thereof |
| CN115308515A (en) * | 2022-08-26 | 2022-11-08 | 天津电气科学研究院有限公司 | IGCT three-level power unit test system and method |
| CN115308515B (en) * | 2022-08-26 | 2024-02-20 | 天津电气科学研究院有限公司 | IGCT three-level power unit test system and method |
| WO2024041025A1 (en) * | 2022-08-26 | 2024-02-29 | 天津电气科学研究院有限公司 | Igct three-level power unit test system, and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108574305B (en) | 2021-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108574305A (en) | Cascaded high-voltage frequency converter power cell load platform with feedback function | |
| Yang et al. | Modulation and control of transformerless UPFC | |
| CN107966626B (en) | Power module test system of power electronic transformer | |
| CN203405559U (en) | Electronic load of electric energy feedback type | |
| CN103837765A (en) | Energy-regeneration type converter power test system and method | |
| CN206272496U (en) | A kind of energy feedback type power network analog power | |
| CN204012751U (en) | A kind of energy feedback type programmable electronic can be presented load device | |
| CN104375039B (en) | Testing system for isolation type direct-current transformer | |
| CN104578859A (en) | Voltage-sharing controlling method for direct current bus voltage of single-phase power electronic transformer | |
| CN105119290B (en) | A kind of power compensating system and control method of uninterruptible power supply | |
| CN102508072B (en) | High-power three-level frequency converter temperature rise and loss testing method employing active front end | |
| CN109104097B (en) | High-frequency transformer operation test device | |
| Ladoux et al. | Power Quality Improvement in ac Railway Substations: The concept of chopper-controlled impedance | |
| CN102761284A (en) | Accuracy control method for single-phase diode clamping three level midpoint potential imbalance | |
| CN101950960B (en) | Control method of DC bus voltage of cascading multi-level power quality conditioners | |
| CN103954866A (en) | Testing circuit of half-bridge-structure voltage source current converter and modulation method thereof | |
| Liu et al. | Quasi-Z-source three-to-single-phase matrix converter and ripple power compensation based on model predictive control | |
| CN105305843A (en) | Three-phase series half H-bridge modular multilevel DC converter and control method thereof | |
| CN104836463A (en) | Mixing transformation system based on three-phase PWM rectification and multi-unit uncontrolled rectification | |
| CN105656318B (en) | Alternating current-direct current energy regenerative type electronic simulation load device and its control method | |
| CN106099969A (en) | A kind of megawatt-grade high-power wired in parallel control method based on series inductance | |
| CN203734546U (en) | Large-scale power transformer low-frequency heating device based on square wave modulation | |
| CN102346223B (en) | Power evaluation system of frequency converter in energy two-way transmission rectification mode and test method of power evaluation system | |
| Klein et al. | Emulation of nonlinear loads with energy regeneration | |
| CN203858311U (en) | Testing circuit of half-bridge structure voltage source converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |