CN109755940A - A kind of control method of the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor - Google Patents
A kind of control method of the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor Download PDFInfo
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Abstract
The invention discloses a kind of control methods of the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor, the control method uses predictive-current control, to virtual Active Power Filter-APF, the ac bus U in the virtual Active Power Filter-APF of the alternating current-direct current mixing micro-capacitance sensora, ac bus Ub, ac bus Uc, exchange micro-capacitance sensor and bulk power grid carry out energy exchange, pass through above-mentioned control method, the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor can be made to work in Active Power Filter-APF, rectification, inversion Three models, Active Power Filter-APF can filter out the harmonic wave of mixing micro-capacitance sensor by compensating reactive power, improve power quality, rectification mode and inverter mode can not only make alternating current-direct current mixing micro-capacitance sensor be able to carry out energy in bidirectional flow, the harmonic wave of mixing micro-capacitance sensor can also be filtered out by compensating reactive power, improve power quality.
Description
Technical field
The present invention relates to a kind of mixing micro-capacitance sensor more particularly to a kind of virtual active power filterings of alternating current-direct current mixing micro-capacitance sensor
The control method of device.
Background technique
The equipment that we use can be divided into AC load and DC load, mainly use AC load in the past, nowadays companion
As DC load uses more and more, result in formation of the situations that alternating current equipment and DC equipment largely coexist.
Multiple ac-dc conversion is required in independent exchange micro-capacitance sensor or direct-current grid to meet distributed generation resource
With the access demand of load.Simultaneously due to largely using power electronic equipment and nonlinear load in alternating current-direct current mixing micro-capacitance sensor,
Using photovoltaic as the alternating current-direct current mixing micro-capacitance sensor of main distributed generation resource especially in distributed power generation, be highly prone to illumination,
The influence of the natural conditions such as wind-force generates harmonic wave.
In addition due to largely using power switch tube, such as insulated gate bipolar transistor in alternating current-direct current mixing micro-capacitance sensor
(IGBT), the devices such as electric power field effect transistor (MOSFET), the working environment of these devices are easily influenced by harmonic wave.By this
The new electric energy converter that a little switching tubes are constituted may can not work normally, and can seriously cause short circuit, harmonic wave is also possible to cause micro-
Power grid DC bus capacitor device shelf depreciation, speed-up capacitor device media ages shorten the working life, it is understood that there may be resonance problems also
It can cause capacitor that overvoltage overload occurs and burns.Harmonic wave present in ac bus can also generate corresponding in DC bus
Harmonic voltage, in this way exchange side harmonic wave be transferred to DC side, for direct-current grid safe and stable operation generate it is very big
Influence.
Traditional bulk power grid Active Power Filter-APF administers harmonic wave and mainly uses Cycle Control, hysteretic loop current control, space arrow
Measure modulation, track with zero error, sliding formwork control, Repetitive controller, fuzzy control, self adaptive control, iterative learning control, passivity
Control, artificial neural-network control method, these controls can only carry out unidirectional harmonic wave control, but cannot make the energy for mixing micro-capacitance sensor
Measure two-way flow.Alternating current-direct current mixing micro-capacitance sensor can only make to mix micro- electricity using constant voltage constant frequency control, virtual synchronous generator control
Network energy two-way flow, but the harmonic wave of mixing micro-capacitance sensor cannot be administered.
Summary of the invention
The present invention is power quality problem caused by solving mixing micro-capacitance sensor harmonic wave, provides a kind of micro- electricity of alternating current-direct current mixing
Virtual Control Method of Active Power Filter is netted, which uses predictive-current control, can not only improve the micro- electricity of mixing
Network electric energy quality, exchange side and direct current distributed generation system excess energy can also be made by predictive-current control 6 absolutely
Edge grid bipolar transistor S1、S2、S3、S4、S5And S6The two-way flow of energy is realized by rectification, inverting.
To achieve the goals above, the technical scheme is that
The invention discloses a kind of control method of the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor, the controlling parties
Method uses predictive-current control, filters to the virtual active electric power in the virtual Active Power Filter-APF of the alternating current-direct current mixing micro-capacitance sensor
Wave device, ac bus Ua, ac bus Ub, ac bus Uc, exchange micro-capacitance sensor and bulk power grid carry out energy exchange, it is described virtual
Active Power Filter-APF includes direct-current grid, alternating current-direct current reversible transducer and control system, and the direct-current grid includes straight
Flow point cloth electricity generation system, isolation type bidirectional DC/DC converter and DC load, the exchange micro-capacitance sensor include that exchange is distributed
Electricity generation system, linear load and nonlinear load, the control system include three-phase voltage sensor, three-phase current sensor and
It is three-phase voltage current acquisition module, Clark converter unit, power calculation unit, energy management unit, reference current unit, anti-
Clark converter unit, predictive-current control unit and SPWM driving unit, the SPWM driving unit respectively with the alternating current-direct current
Six switching tube S in reversible transducer1、S2、S3、S4、S5And S6Grid be connected, which realized by following steps
:
(a) the instantaneous voltage U on the ac bus for acquiring three-phase voltage sensora、Ub、UcAnd three-phase current sensor
Transient current i on the ac bus of acquisitiona、ib、ic, it is sent to three-phase voltage current acquisition module respectively, is converted by Clark
Unit obtains the voltage U under rest frame α βα、UβWith electric current iα、iβ, the U that is obtained by the Clark converter unitα、UβSuch as
Shown in formula (1), the i obtained by the Clark converter unitα、iβAs shown in formula (2)；
(b) the power calculation unit real time computation system instantaneous active power P and reactive power Q, calculation formula such as formula
(3) shown in；
(c) gained active-power P and reactive power Q enter energy management unit, and the energy management unit is for judging
Whether the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor needs to carry out energy exchange, if the energy management unit
Judge that the energy of the direct current distributed generation system hair reaches DC load use, while the energy of the exchange distributed system hair
Amount also can AC linear and nonlinear load use, then follow the steps (d), if the energy management unit judges the direct current
The energy of distributed generation system hair reaches DC load and uses and have energy that is extra, while exchanging distributed generation system hair
Inadequate AC linear load and nonlinear load use, and then follow the steps (e), if the energy management unit judges the direct current
The inadequate DC load of energy of distributed generation system hair uses, while the energy of the exchange distributed generation system hair is enough handed over
Cleanliness loads and nonlinear load uses and there have to be extra, thens follow the steps (f)；
(d) the virtual Active Power Filter-APF enters Active Power Filter-APF mode, calculating process such as formula (4):
(e) the virtual Active Power Filter-APF enters inverter mode, and carries out alternating current-direct current mixing micro-capacitance sensor energy exchange,
Active power (P is injected to exchange micro-capacitance sensorac) calculating process such as following formula (5):
(f) the virtual Active Power Filter-APF enters rectification mode, and carries out alternating current-direct current mixing micro-capacitance sensor energy exchange,
Instantaneous active power (P is injected to direct-current griddc), calculating process such as formula (6):
(g) enter reference current unit, i is calculatedαReference current iα,refAnd iβReference current iβ,ref, calculated
Journey such as formula (7):
(h) to iαReference current iα,refAnd iβReference current iβ,refIt is described anti-into anti-Clark converter unit
Clark converter unit is by three-phase current under the coordinate system that α β transforms to abc, to obtain three-phase current ia1,ref、ia2,ref
Withref, the ia1,ref=ia,ia2,ref=ib,ia3,ref=ic。
(i) into entering predictive-current control unit, indicate inductance (L with the dynamical equation under abc coordinate system1、L2And L3) left
Side three-phase voltage reference signal Ua1,ref、Ua2,ref、Ua3,refCalculating process such as formula (8):
(j) sliding-model control is carried out to use when the sliding-model control refers to that mathematical model, which is converted to numerical model, to be solved
Limited discrete magnitude replaces continuous variable quantity, and the process of the differential equation is replaced with difference equation, so that prediction is more accurate,
Sliding-model control formula such as formula (9):
(k) after discretization, the L from the alternating current-direct current reversible transducer1、L2And L3Three Voltage References that left side occurs
Signal Ua1,ref、Ua2,ref、Ua3,refRespectively compared with PWM triangle carrier signal, SPWM driving signal is generated, is driven by SPWM
Moving cell controls six switching tube S in the alternating current-direct current reversible transducer1、S2、S3、S4、S5And S6On or off.
Further, the direct current distributed generation system is fuel cell, flywheel energy storage system, super capacitive energy storage system
Any one of system, battery or photovoltaic power generation.
Further, six switching tube S in the alternating current-direct current reversible transducer1、S2、S3、S4、S5And S6It is all made of insulated gate
Bipolar transistor IGBT.
By above-mentioned control method, the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor can be made to work in three kinds of moulds
Formula is Active Power Filter-APF (APF) mode, rectification mode, inverter mode respectively, and Active Power Filter-APF (APF) mode is only
The harmonic wave of mixing micro-capacitance sensor can be filtered out by compensating reactive power, improve power quality；Rectification mode and inverter mode can not only make
Alternating current-direct current mixing micro-capacitance sensor is able to carry out energy in bidirectional flow, can also filter out the harmonic wave of mixing micro-capacitance sensor by compensating reactive power,
Improve power quality.
The invention has the following advantages:
1, mixing micro-capacitance sensor power quality can be improved；
2, it realizes that alternating current equipment and DC equipment largely coexist, meets in independent exchange micro-capacitance sensor or direct-current grid and be both needed to
Multiple ac-dc conversion is wanted to meet the access demand of distributed generation resource and load；
3, the excess energy in distributed generation system and direct current distributed generation system is exchanged, it can be by virtual active
Electric-power filter rectifier system, inverting make energy realize two-way flow, solve electric energy matter caused by mixing micro-capacitance sensor harmonic wave
Amount problem.
Detailed description of the invention
Fig. 1 is the topology diagram of the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor；
Fig. 2 is the topology diagram of isolation type bidirectional DC/DC converter；
Fig. 3 is the control method flow chart of the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
A kind of control method of the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor, the control method is using prediction electricity
Flow control, it is female to the virtual Active Power Filter-APF in the virtual Active Power Filter-APF of the alternating current-direct current mixing micro-capacitance sensor, exchange
Line Ua, ac bus Ub, ac bus Uc, exchange micro-capacitance sensor and bulk power grid carry out energy exchange, as shown in Figure 1, described virtually have
Active power filter includes direct-current grid, alternating current-direct current reversible transducer and control system, and the direct-current grid includes direct current
Distributed generation system, isolation type bidirectional DC/DC converter and DC load, the exchange micro-capacitance sensor include the distributed hair of exchange
Electric system, linear load and nonlinear load, the alternating current-direct current reversible transducer include DC bus capacitor C, six switching tube S1、
S2、S3、S4、S5、S6With three inductance L1、L2And L3；
As shown in Fig. 2, the isolation type bidirectional DC/DC converter includes the first DC capacitor C1, the second DC capacitor C2、
First full-bridge converter, the second full-bridge converter, transformer T and auxiliary induction L4, first full-bridge converter includes four
Switching tube S7、S8、S9And S10, second full-bridge converter includes four power switch tube Q1、Q2、Q3And Q4, the S1、S3With
S5Collector be connected, the S2、S4And S6Emitter be connected, the S1Emitter and S4Collector be connected, the S3
Emitter and S6Collector be connected, the S5Emitter and S2Collector be connected, the S7And S9Collector be connected,
The S8And S10Emitter be connected, the S7Emitter and S8Collector be connected, the S9Emitter and S10Current collection
Extremely it is connected, the Q1And Q3Collector be connected, the Q2And Q4Emitter be connected, the Q1Emitter and Q2Collector
It is connected, the Q3Emitter and Q4Collector be connected；
As shown in Fig. 2, the direct current distributed generation system output end respectively with the first DC capacitor C1Both ends are connected, institute
State the first DC capacitor C1One end and S7Collector be connected, the first DC capacitor C1The other end and S8Emitter be connected,
The auxiliary induction L4One end and S7Emitter be connected, the auxiliary induction L4The other end and transformer T primary side one end phase
Even, the transformer T primary side other end and S9Emitter be connected, described transformer T secondary side one end and Q1Emitter phase
Even, the Circuit Fault on Secondary Transformer other end and Q3Emitter be connected, the second DC capacitor C2One end and Q3Collector phase
Even, the second DC capacitor C2The other end and Q4Emitter be connected, the second DC capacitor C2Both ends also with DC load
Input terminal is connected, and the DC load output end is connected with the DC bus capacitor C anode and negative terminal respectively, the DC side electricity
Hold C anode also with the S1Collector be connected, the DC bus capacitor C negative terminal also with the S4Emitter be connected, the L1
One end and the S1Emitting stage is connected, the L1Another termination ac bus Ua, the L2One end and the S3Emitting stage is connected, institute
State L2Another termination ac bus Ub, the third inductance L3One end and the 5th switching tube S5Emitting stage is connected, the third
Inductance L3Another termination ac bus Uc, the ac bus Ua, ac bus Ub, ac bus UcAlso respectively with bulk power grid, hand over
Flow point cloth electricity generation system, linear load are connected with nonlinear load；
As shown in Figure 1, the control system includes three-phase voltage sensor, three-phase current sensor and three-phase voltage current
Acquisition module, Clark converter unit, power calculation unit, energy management unit, reference current unit, anti-Clark transformation are single
Member, predictive-current control unit and SPWM driving unit, the SPWM driving unit respectively with the alternating current-direct current reversible transducer
In six switching tube S1、S2、S3、S4、S5And S6Grid be connected, as shown in figure 3, the control method is realized by following steps
:
(a) the instantaneous voltage U on the ac bus for acquiring three-phase voltage sensora、Ub、UcAnd three-phase current sensor
Transient current i on the ac bus of acquisitiona、ib、ic, it is sent to three-phase voltage current acquisition module respectively, is converted by Clark
Unit obtains the voltage U under rest frame α βα、UβWith electric current iα、iβ, the U that is obtained by the Clark converter unitα、UβSuch as
Shown in formula (1), the i obtained by the Clark converter unitα、iβAs shown in formula (2)；
(b) the power calculation unit real time computation system instantaneous active power P and reactive power Q, calculation formula such as formula
(3) shown in；
(c) gained active-power P and reactive power Q enter energy management unit, and the energy management unit is for judging
Whether the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor needs to carry out energy exchange, if the energy management unit
Judge that the energy of the direct current distributed generation system hair reaches DC load use, while the energy of the exchange distributed system hair
Amount also can AC linear and nonlinear load use, then follow the steps (d), if the energy management unit judges the direct current
The energy of distributed generation system hair reaches DC load and uses and have energy that is extra, while exchanging distributed generation system hair
Inadequate AC linear load and nonlinear load use, and then follow the steps (e), if the energy management unit judges the direct current
The inadequate DC load of energy of distributed generation system hair uses, while the energy of the exchange distributed generation system hair is enough handed over
Cleanliness loads and nonlinear load uses and there have to be extra, thens follow the steps (f)；
(d) the virtual Active Power Filter-APF enters Active Power Filter-APF mode, and nonlinear load is harmonic wave at this time
Source simultaneously generates harmonic wave, does not need progress direct-current grid by energy management unit judgement and exchanges with the active of micro-capacitance sensor is exchanged,
By compensating reactive power Q, the harmonic wave that exchange micro-capacitance sensor nonlinear load generates is filtered out, calculating process such as formula (4):
(e) the virtual Active Power Filter-APF enters inverter mode, and carries out alternating current-direct current mixing micro-capacitance sensor energy exchange,
Active power (P is injected to exchange micro-capacitance sensorac), nonlinear load is harmonic source and generates harmonic wave at this time, passes through energy management list
Member judgement needs to carry out direct-current grid and exchanges with exchange the active of micro-capacitance sensor, while filtering out the micro- electricity of exchange by compensating reactive power Q
The harmonic wave that net nonlinear load generates, calculating process such as following formula (5):
(f) the virtual Active Power Filter-APF enters rectification mode, and carries out alternating current-direct current mixing micro-capacitance sensor energy exchange,
Instantaneous active power (P is injected to direct-current griddc), nonlinear load is harmonic source and generates harmonic wave at this time, passes through energy pipe
Reason unit judges need to carry out direct-current grid and exchange with exchange the active of micro-capacitance sensor, while filtering out exchange by compensating reactive power Q
The harmonic wave that micro-capacitance sensor nonlinear load generates, calculating process such as formula (6):
(g) enter reference current unit, i is calculatedαReference current iα,refAnd iβReference current iβ,ref, calculated
Journey such as formula (7):
(h) to iαReference current iα,refAnd iβReference current iβ,refIt is described anti-into anti-Clark converter unit
Clark converter unit is by three-phase current under the coordinate system that α β transforms to abc, to obtain three-phase current ia1,ref、ia2,ref
And ia3,ref, the ia1,ref=ia,ia2,ref=ib,ia3,ref=ic。
(i) enter predictive-current control unit, indicate inductance (L with the dynamical equation under abc coordinate system1、L2And L3) left side
Three-phase voltage reference signal Ua1,ref、Ua2,ref、Ua3,ref, calculating process such as formula (8):
(j) sliding-model control is carried out to use when the sliding-model control refers to that mathematical model, which is converted to numerical model, to be solved
Limited discrete magnitude replaces continuous variable quantity, and the process of the differential equation is replaced with difference equation, so that prediction is more accurate,
Sliding-model control formula such as formula (9):
(k) after discretization, the L from the alternating current-direct current reversible transducer1、L2And L3Three Voltage References that left side occurs
Signal Ua1,ref、Ua2,ref、Ua3,refRespectively compared with PWM triangle carrier signal, SPWM driving signal is generated, is driven by SPWM
Moving cell controls six switching tube S in the alternating current-direct current reversible transducer1、S2、S3、S4、S5And S6On or off.
The direct current distributed generation system is fuel cell, flywheel energy storage system, super capacitor energy storage system, battery
Or any one of photovoltaic power generation.
Six switching tube S in the alternating current-direct current reversible transducer1、S2、S3、S4、S5And S6, in first full-bridge converter
Four switching tube S7、S8、S9And S10, four power switch tube Q in second full-bridge converter1、Q2、Q3And Q4It is all made of insulation
Grid bipolar transistor IGBT.
By above-mentioned control method, the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor can be made to work in three kinds of moulds
Formula is Active Power Filter-APF (APF) mode, rectification mode, inverter mode respectively, and Active Power Filter-APF (APF) mode is only
The harmonic wave of mixing micro-capacitance sensor can be filtered out by compensating reactive power, improve power quality；Rectification mode and inverter mode can not only make
Alternating current-direct current mixing micro-capacitance sensor is able to carry out s energy in bidirectional flow, can also filter out the humorous of mixing micro-capacitance sensor by compensating reactive power
Wave improves power quality.
Claims (3)
1. a kind of control method of the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor, which is characterized in that the control method
Using predictive-current control, to the virtual active power filtering in the virtual Active Power Filter-APF of the alternating current-direct current mixing micro-capacitance sensor
Device, ac bus Ua, ac bus Ub, ac bus Uc, exchange micro-capacitance sensor and bulk power grid carry out energy exchange, it is described virtually to have
Active power filter includes direct-current grid, alternating current-direct current reversible transducer and control system, and the direct-current grid includes direct current
Distributed generation system, isolation type bidirectional DC/DC converter and DC load, the exchange micro-capacitance sensor include the distributed hair of exchange
Electric system, linear load and nonlinear load, the control system include three-phase voltage sensor, three-phase current sensor and three
It is phase voltage current acquisition module, Clark converter unit, power calculation unit, energy management unit, reference current unit, anti-
Clark converter unit, predictive-current control unit and SPWM driving unit, the SPWM driving unit respectively with the alternating current-direct current
Six switching tube S in reversible transducer1、S2、S3、S4、S5And S6Grid be connected, which realized by following steps
:
(a) the instantaneous voltage U on the ac bus for acquiring three-phase voltage sensora、Ub、UcIt is acquired with three-phase current sensor
Ac bus on transient current ia、ib、ic, it is sent to three-phase voltage current acquisition module respectively, by Clark converter unit
Obtain the voltage U under rest frame α βα、UβWith electric current iα、iβ, the U that is obtained by the Clark converter unitα、UβSuch as formula
(1) shown in, the i obtained by the Clark converter unitα、iβAs shown in formula (2)；
(b) the power calculation unit real time computation system instantaneous active power P and reactive power Q, calculation formula such as formula (3) institute
Show；
(c) gained active-power P and reactive power Q enter energy management unit, and the energy management unit is described for judging
Whether the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor needs to carry out energy exchange, if the energy management unit judges
The energy of the direct current distributed generation system hair reaches DC load use, while the energy of the exchange distributed system hair
Can AC linear and nonlinear load use, then follow the steps (d), if the energy management unit judge that the direct current is distributed
Formula electricity generation system hair energy reach DC load use and have it is extra, while exchange distributed generation system send out energy it is inadequate
AC linear load and nonlinear load use, and then follow the steps (e), if the energy management unit judges the direct current distribution
The inadequate DC load of energy of formula electricity generation system hair uses, while the energy of the exchange distributed generation system hair reaches AC line
Property load and nonlinear load use and have extra, then follow the steps (f)；
(d) the virtual Active Power Filter-APF enters Active Power Filter-APF mode, calculating process such as formula (4):
(e) the virtual Active Power Filter-APF enters inverter mode, and carries out alternating current-direct current mixing micro-capacitance sensor energy exchange, to friendship
It flows micro-capacitance sensor and injects active power (Pac) calculating process such as following formula (5):
(f) the virtual Active Power Filter-APF enters rectification mode, and carries out alternating current-direct current mixing micro-capacitance sensor energy exchange, Xiang Zhi
It flows micro-capacitance sensor and injects instantaneous active power (Pdc), calculating process such as formula (6):
(g) enter reference current unit, i is calculatedαReference current iα,refAnd iβReference current iβ,ref, calculating process is such as
Formula (7):
(h) to iαReference current iα,refAnd iβReference current iβ,refInto anti-Clark converter unit, the anti-Clark becomes
Changing unit is by three-phase current under the coordinate system that α β transforms to abc, to obtain three-phase current ia1,ref、ia2,refAnd ia3,ref,
The ia1,ref=ia,ia2,ref=ib,ia3,ref=ic。
(i) enter predictive-current control unit, indicate inductance (L with the dynamical equation under abc coordinate system1、L2And L3) left side three-phase
Voltage reference signal Ua1,ref、Ua2,ref、Ua3,ref, calculating process such as formula (8):
(j) sliding-model control is carried out, when the sliding-model control refers to that mathematical model, which is converted to numerical model, to be solved, use is limited
Discrete magnitude replace continuous variable quantity, and replace with difference equation the process of the differential equation so that predict it is more accurate, it is discrete
Change processing formula such as formula (9):
(k) after discretization, the L from the alternating current-direct current reversible transducer1、L2And L3Three voltage reference signals that left side occurs
Ua1,ref、Ua2,ref、Ua3,refRespectively compared with PWM triangle carrier signal, SPWM driving signal is generated, is driven by SPWM single
Member controls six switching tube S in the alternating current-direct current reversible transducer1、S2、S3、S4、S5And S6On or off.
2. the control method of the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor, feature exist according to claim 1
In the direct current distributed generation system is fuel cell, flywheel energy storage system, super capacitor energy storage system, battery or light
Any one of volt power generation.
3. the control method of the virtual Active Power Filter-APF of alternating current-direct current mixing micro-capacitance sensor, feature exist according to claim 1
In six switching tube S in the alternating current-direct current reversible transducer1、S2、S3、S4、S5And S6It is all made of insulated gate bipolar transistor
IGBT。
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| CN112448392A (en) * | 2020-11-09 | 2021-03-05 | 广西电网有限责任公司电力科学研究院 | Regional power grid harmonic treatment method and device based on complex-valued neural network |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162134A (en) * | 2015-08-26 | 2015-12-16 | 电子科技大学 | Novel microgrid system, power balance control strategy and small-signal modeling method therefor |
| CN105610165A (en) * | 2016-02-01 | 2016-05-25 | 河南理工大学 | High-frequency isolation-based feedback grid-type multifunctional reactive harmonic generator |
| CN106998067A (en) * | 2017-04-25 | 2017-08-01 | 国家电网公司 | Alternating current active wave filter for compensating HVDC transmission system characteristic harmonics |
| CN108321812A (en) * | 2018-01-08 | 2018-07-24 | 东南大学 | A kind of prediction direct Power Control method based on fuzzy PI hybrid control |
-
2019
- 2019-03-19 CN CN201910205812.2A patent/CN109755940A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162134A (en) * | 2015-08-26 | 2015-12-16 | 电子科技大学 | Novel microgrid system, power balance control strategy and small-signal modeling method therefor |
| CN105610165A (en) * | 2016-02-01 | 2016-05-25 | 河南理工大学 | High-frequency isolation-based feedback grid-type multifunctional reactive harmonic generator |
| CN106998067A (en) * | 2017-04-25 | 2017-08-01 | 国家电网公司 | Alternating current active wave filter for compensating HVDC transmission system characteristic harmonics |
| CN108321812A (en) * | 2018-01-08 | 2018-07-24 | 东南大学 | A kind of prediction direct Power Control method based on fuzzy PI hybrid control |
Non-Patent Citations (2)
| Title |
|---|
| HIROFUMI AKAGI等: "Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components", 《IEEE》, vol. 1, no. 3, pages 625 * |
| MOJTABA KHEDERZADEH等: "Virtual active power filter: a notable feature for hybrid ac/dc microgrids", 《IET》, vol. 10, no. 14, pages 3539 - 3546, XP006058912, DOI: 10.1049/iet-gtd.2016.0217 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448392A (en) * | 2020-11-09 | 2021-03-05 | 广西电网有限责任公司电力科学研究院 | Regional power grid harmonic treatment method and device based on complex-valued neural network |
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