CN206790097U - Realize the topological structure and system of bipolarity DC bus-bar voltage independent control - Google Patents
Realize the topological structure and system of bipolarity DC bus-bar voltage independent control Download PDFInfo
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- CN206790097U CN206790097U CN201720706822.0U CN201720706822U CN206790097U CN 206790097 U CN206790097 U CN 206790097U CN 201720706822 U CN201720706822 U CN 201720706822U CN 206790097 U CN206790097 U CN 206790097U
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Abstract
The utility model discloses a kind of topological structure and system for realizing bipolarity DC bus-bar voltage independent control, three-level converter topology includes T-shaped three-level converter and single-phase uneven bridge arm；Control system is divided into T-shaped three level and realizes positive and negative DC bus-bar voltage control, single-phase uneven bridge arm realizes negative DC bus-bar voltage control, so as to complete bipolarity DC bus-bar voltage independent control, while the independent control has compared with common-path interference to DC load imbalance situation.The utility model is easy, efficiently, be easy to realizations that quantize, make the bipolarity DC bus system efficient stable operation using three-level converter, be greatly enlarged three-level converter and bipolarity DC bus structure application scenario.
Description
Technical field
The utility model belongs to field of power electronics, more particularly to one kind realizes bipolarity DC bus-bar voltage independent control
Topological structure and system.
Background technology
The T-shaped three-level converter of bipolarity DC bus structure have harmonic wave is small, switching loss is low, electromagnetic interference is small,
The advantages that power attenuation is uniform, it is adapted to and is widely used to D.C. high voltage transmission, distributed power generation, micro-capacitance sensor, electric automobile
The ac-dc conversion place in charging field.Bipolarity direct current mother is directly produced using the intrinsic split capacitor of three-level converter
Line, simple in construction, small volume, cost are low, are the study hotspots of domestic and international academia and industrial quarters.But so that bipolarity is straight
Flow the three-level converter bad adaptability of bus structure, it is difficult to meet various voltage class and complex load type, compel to be essential
Solves the bipolarity busbar voltage independent control based on T-shaped three-level converter.
It is mutually coupled because DC bus-bar voltage is asymmetric with laod unbalance so that the load of bipolarity dc bus is uneven
During weighing apparatus, especially a certain bus is unloaded, when another bus belt carries and produces extremely uneven, it is difficult to accurate control bipolarity direct current
Busbar voltage.Therefore improve or propose that new converter topology and control method are to realize T-shaped three-level converter bipolarity
Dc bus independent control and the key of stable operation.
Utility model content
The utility model is to solve the above problems, it is proposed that a kind of bipolarity DC bus-bar voltage independent control of realizing
Topological structure and system, the utility model consider extreme unbalanced load situation design control system, independently accurately controlled bipolar
Property DC bus-bar voltage, realizes asymmetrical voltage and the uneoupled control of unbalanced load.New three level of the present utility model becomes
Parallel operation topology is simple, efficient, and its system controller is easy to Digital Realization, and designed control system makes T-shaped three level translation
Utensil has the direct current output of high-quality independence, and efficient stable is run, and is greatly enlarged based on the bipolar of T-shaped three-level converter
The application scenario of property DC bus structure.
To achieve these goals, the utility model adopts the following technical scheme that：
A kind of topological structure for realizing bipolarity DC bus-bar voltage independent control, including T-shaped three-level converter and list
Mutually uneven bridge arm, T-shaped three-level converter include three-phase bridge arm in parallel, and the IGBT pipes of two series connection are included per phase bridge arm,
The IGBT that the midpoint side series connection both direction of each phase bridge arm is different is managed, and the filtered device of opposite side is connected with power network；
It is straight that the dc-link capacitances of two divisions of series connection between dc bus, dc bus and electric capacity midpoint form bipolarity
Bus is flowed, two electric capacity midpoints connect one end of the both direction difference IGBT pipes of each phase bridge arm, and each IGBT pipes are by control
Circuit drives, the dc-link capacitances of two divisions are distinguished two unbalanced loads in parallel, set between positive and negative dc bus
There is single-phase uneven bridge arm, bridge arm is made up of the IGBT pipes of two series connection, and bridge arm midpoint is followed by electric capacity by uneven inductance
Point.
The wave filter is filter inductance.
One kind realizes bipolarity DC bus-bar voltage autonomous control system, has controller, including T-shaped three-level converter
Control module and single-phase uneven bridge arm control module, the T-shaped three-level converter control module, are configured to ensure that rectification
Or run under reversals unity power factor, adjust bipolarity dc bus total voltage；Single-phase uneven bridge arm control module
It is configured as adjusting negative DC bus-bar voltage, realizes bipolarity DC bus-bar voltage independent control.
The single-phase uneven bridge arm control module makes positive and negative dc bus have complete load capacity, wherein a certain bus
Can be unloaded, another bus belt carries to produce remains to stable operation under extreme non-equilibrium state.
The controller receives uneven inductive current and negative DC bus-bar voltage reference value, and output PWM modulation signal is come
Drive single-phase uneven bridge arm work.
The T-shaped three-level converter control module is using outer voltage, the double -loop control structure of current inner loop.
The T-shaped three-level converter control module collection line voltage mutually obtains the rotation of voltage vector by grid-connected lock
Angle, according to the anglec of rotation by the power network current signal collected carry out coordinate transform, obtain current component under rotating coordinate system,
Bipolarity dc bus total voltage and the difference of desired DC bus-bar voltage are by being used as current inner loop d axle controls after PI controllers
The reference value of system, the reference value that current inner loop q axles control is zero.
Further, the reference value of the T-shaped three-level converter control module current inner loop is distinguished with actual measured value
Adjusted again after coordinate contravariant is changed to rest frame α, beta -axis component by SVPWM vectors by the PI controllers of d axles and q axles
System, obtains PWM waveform driving switch pipe.
Single-phase uneven bridge arm control module is using outer voltage, the double -loop control structure of current inner loop.
Further, the difference of the desired negative DC bus-bar voltage of outer voltage and the negative DC bus-bar voltage gathered in real time
By being used as the current reference value of current inner loop after PI controllers, this reference value and the uneven inductive current difference of collection are passed through
Current inner loop PI controllers, controller are exported compared with triangular carrier, generate the single-phase uneven bridge of PWM drive waveform
Two switching tubes in arm.
Compared with prior art, the beneficial effects of the utility model are：
(1) the utility model carries topological structure based on the intrinsic split capacitor of three-level converter, can be greatly decreased
The design capacity of dc-link capacitance so that bipolarity DC bus structure is simple, small volume, cost are low.
(2) the bipolarity DC bus-bar voltage independent control that the utility model is carried can produce three it is independently adjustable
The DC bus-bar voltage grade of section, more extensive DC source/load is suitable for, has greatly expanded the application of three-level converter
Occasion.
(3) the utility model puies forward three-level topology structure and its control system under rotating coordinate system, is sweared by space
Amount modulates easy Digital Realization.
(4) the utility model carry three-level converter topology and its control system be applied to more, multi-voltage grade it is straight
The situation of flow device random walk, battery testing, distributed electrically-charging equipment, grid-connected power generation system, micro- electricity can be applied to
The fields such as net.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 produces bipolarity DC bus system structure chart using three-level converter separation electric capacity；
Fig. 2 is is proposed new three-level converter topology diagram；
Fig. 3 is T-shaped three-level converter control system figure；
The single-phase uneven bridge arm control system figures of Fig. 4；
Fig. 5 is, when being put forward topology with control system using the utility model under the conditions of load balance, bipolarity direct current is female
Line voltage independent control dynamic simulation oscillogram；
Fig. 6 is is put forward topology and its control under the conditions of bipolarity DC bus-bar voltage independent control using the utility model
During system, dc bus loads the simulation waveform of switching at runtime；
Fig. 7 is is put forward topology and control system under the conditions of bipolarity DC bus-bar voltage independent control using the utility model
System, dc bus load switching at runtime three-level converter AC simulation waveform；
Fig. 8 is schematic diagram of the present utility model.
Embodiment：
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, exist in the prior art because DC bus-bar voltage is asymmetric and laod unbalance
It is mutually coupled so that during bipolarity dc bus laod unbalance, especially a certain bus is unloaded, and another bus belt is carried and produced
When extremely uneven, it is difficult to the deficiency of accurate control bipolarity DC bus-bar voltage, in order to solve technical problem as above, this Shen
It please propose a kind of three-level converter topology and based on new topological bipolarity DC bus-bar voltage autonomous control system.
Three-level converter topology is made up of T-shaped three-level converter and single-phase uneven bridge arm.T-shaped three-level converter
Include three-phase bridge arm in parallel, the IGBT pipes of two series connection, midpoint side two sides of series connection of each phase bridge arm are included per phase bridge arm
Managed to different IGBT, the filtered device of opposite side is connected with power network；Two dc bus divided of being connected between dc bus are electric
Hold, dc bus forms bipolarity dc bus with electric capacity midpoint；Two electric capacity midpoints connect the both direction of each phase bridge arm not
With one end of IGBT pipes, each IGBT pipes drive by control circuit；The dc-link capacitance of two divisions is in parallel two respectively
Unbalanced load.Single-phase bridge arm is added between positive and negative dc bus, bridge arm is made up of the IGBT pipes of two series connection, bridge arm midpoint
Electric capacity midpoint is followed by by uneven inductance, new three-level converter topology is as shown in Figure 2.
T-shaped three-level converter control and list are divided into based on new topological bipolarity DC bus-bar voltage independent control structure
Mutually uneven bridge arm controls respectively.
(1) major function of T-shaped three-level converter is to ensure that under rectification or reversals unity power factor and run；Adjust
Save bipolarity dc bus total voltage.T-shaped three-level converter Control system architecture provided by the utility model is as shown in Figure 3.
The controller is used to receive three-phase input current and three-phase reference voltage, exports PWM modulation signal to drive T-shaped three level to become
Parallel operation.
(2) major function of single-phase uneven bridge arm is the negative DC bus-bar voltage of regulation, and makes positive and negative dc bus respectively
Function is carried with complete band, even if wherein a certain bus can be unloaded, another bus belt is carried to produce and remained under extreme non-equilibrium state
Stable operation.The utility model provides a kind of control system for single-phase uneven bridge arm, and the controller receives uneven
Weigh inductive current and negative DC bus-bar voltage reference value, exports PWM modulation signal to drive single-phase uneven bridge arm work, it is controlled
Structure processed is as shown in Figure 4.
By adjusting bipolarity dc bus total voltage, negative DC bus-bar voltage, bipolarity dc bus electricity is finally realized
Press independent control.
In a kind of typical embodiment of the application, as shown in figure 1, proposing new three level translation with the utility model
Device topological structure illustrates bipolarity DC bus-bar voltage independent control strategy.
Fig. 2 carries new three-level converter topology diagram by the utility model, and main circuit can be divided into T-shaped three level and become
Parallel operation and single-phase uneven bridge arm.T-shaped three-level converter includes three-phase bridge arm in parallel, is connected per phase bridge arm including two
IGBT is managed, and the IGBT that the midpoint side series connection both direction of each phase bridge arm is different is managed, and opposite side connects through inductance filter and power network
Connect；Connect two dc-link capacitance C divided between dc bus1、C2, dc bus and electric capacity midpoint O composition bipolaritys are straight
Flow bus；Two electric capacity midpoints connect one end of the both direction difference IGBT pipes of each phase bridge arm, and each IGBT pipes are by control
Circuit drives；Two unbalanced DC load resistance R of dc-link capacitance difference parallel connection of two divisions1、R2.Positive and negative direct current
Single-phase bridge arm is added between bus, bridge arm is made up of the IGBT pipes of two series connection, and bridge arm midpoint is followed by electricity by uneven inductance
Hold midpoint O.The wave filter is filter inductance La、Lb、Lc。
The coherent signal that signal conditioning circuit measures Hall sensor is nursed one's health, and obtains what sample circuit can receive
Analog signal.The sampling of a/d converter is controlled with changing by DSP, and conditioned analog signal is converted into digital quantity.Number
The handling of word signal, the PWM modulation signal of single-phase uneven bridge arm are produced and realized by DSP, and the pwm signal ultimately generated is given
Drive circuit controls opening and turning off for IGBT pipes.
The utility model puies forward bipolarity DC bus-bar voltage autonomous control system and adjusted respectively by T-shaped three-level converter
Bipolarity dc bus total voltage is saved to realize with the single-phase uneven negative DC bus-bar voltage of bridge arm regulation.
The control method of T-shaped three-level converter is as shown in figure 3, collection line voltage mutually obtains voltage arrow by grid-connected lock
The anglec of rotation θ of amount, according to the anglec of rotation by the power network current signal collected carry out coordinate transform, obtain under rotating coordinate system
Current component id, iq.Bipolarity dc bus total voltage (V1+V2) is sampled by DSP, with desired DC bus-bar voltage Vdc_
The reference value id_ref that ref difference is controlled by being used as current inner loop d axles after PI controllers.Transported to realize under unit power
OK, the reference value iq_ref that current inner loop q axles control is zero.The reference value of current inner loop passes through d axles respectively with actual measured value
PI controllers with q axles obtain again after coordinate contravariant is changed to rest frame α, beta -axis component by SVPWM Vector Modulations
PWM waveform driving switch pipe.
Single-phase uneven bridge arm control method is equally using outer voltage, double -loop control structure such as Fig. 4 institutes of current inner loop
Show, desired negative DC bus-bar voltage V2_ref is with the difference of negative DC bus-bar voltage that gathers in real time by making after PI controllers
For the current reference value of current inner loop.This reference value and the uneven inductive current difference of collection control by current inner loop PI
Device, controller are exported compared with triangular carrier, generate two switching tubes in the single-phase uneven bridge arm of PWM drive waveform
B1、B2。
Topology is carried by MATLAB simulating, verifying the utility model, control structure can realize bipolarity DC bus-bar voltage
Independent control.When dc bus laod unbalance, especially dc bus load is extreme uneven, i.e., a certain bus is unloaded,
Under the conditions of the extreme imbalance that another bus belt carries, it was demonstrated that the New Topological and its control system proposed accurately can be controlled independently
Bipolarity DC bus-bar voltage processed is allowed to keep asymmetric lower stable operation.Simulation software selects MATLAB/simulink
2014A, simulation parameter is as shown in table 2, the new three-level converter topology and its control structure that simulation results show proposes
Not bipolarity DC bus-bar voltage independent control under the influence of by direct current unbalanced load is realized, makes DC bus-bar voltage not right
Claim and produce three independent DC bus-bar voltage grades.
The simulation parameter of table 2
Fig. 5 is independently controlling in be carried topological and its control system, bipolarity DC bus-bar voltage using the utility model
Simulation waveform under the conditions of load balance.Waveform (1) AC line voltage waveform；Waveform (2) is that bipolarity dc bus is positive and negative
DC bus-bar voltage, dotted line represent positive direct-current busbar voltage, and solid line represents negative DC bus-bar voltage；Waveform (3) is AC electricity
Net current waveform.Shown in Fig. 5 within emulation 0.1s~0.2s times, bipolarity DC bus-bar voltage original state is symmetrical phase
Deng；Within emulation 0.2s~0.3s times, positive direct-current busbar voltage V1 is adjusted to 500V, and negative DC bus-bar voltage V2 is conditioned
To 200V；Emulate in 0.3s~0.4s times, positive direct-current busbar voltage V1 is precisely adjusted to 400V, bears DC bus-bar voltage V2
It is precisely adjusted to 300V；Emulate in 0.4s~0.5s times, positive direct-current busbar voltage V1 is precisely adjusted to 300V, bears direct current
Busbar voltage V2 is precisely adjusted to 400V；Emulate in 0.5s~0.6s times, positive direct-current busbar voltage and negative dc bus electricity
Pressure is controlled symmetry equivalent again.By waveform in analysis chart 5, three-level converter that the utility model is carried is new to be opened up
Flutter and control system is in the case of dc bus band balanced load, bipolarity DC bus-bar voltage independent control can be achieved.
Bipolarity DC bus-bar voltage independent control provided by the utility model, it is uneven to bipolarity dc bus negative
Carrier has stronger robustness.(a certain bus especially when a certain bus is unloaded produces serious unbalanced load disturbance
When unloaded, when another bus belt carries), the utility model puies forward new three-level converter topology and its system controller being capable of essence
True independent control bipolarity DC bus-bar voltage.
Have independent control bipolar to prove that the utility model is put forward new three-level converter topology and its control system
Property DC bus-bar voltage function, and do not influenceed by dc bus load disturbance, devise dc bus load switching at runtime
Emulation.In original state 0.15s~0.2s times, bipolarity DC bus-bar voltage is symmetry equivalent；Emulate 0.2s moment, positive direct-current
Busbar voltage V1 is adjusted to 400V, and negative DC bus-bar voltage is adjusted to 300V, observes DC load switching at runtime pair thereafter
The influence of bipolarity DC bus-bar voltage independent control.Emulate in 0.15~0.3s times, bus meets balanced load R1=R2；It is imitative
In true 0.3~0.4s times, positive direct-current bus is unloaded, and negative dc bus meets load R2；Emulate in 0.4~0.5s times, it is honest
Stream bus meets load R1, and it is unloaded to bear dc bus；In simulation time 0.5~0.6s times, positive and negative dc bus connects balance simultaneously
Load R1=R2.
Waveform (1) is AC line voltage waveform in Fig. 6；Waveform (2) is bipolarity DC bus-bar voltage in DC load
Dynamic waveform during switching；Waveform (3) is the load current that direct current zero line is flowed through through new three-level converter.Pass through analysis chart
6 simulation results understand that the stochastic and dynamic switching of DC load, positive direct-current busbar voltage V1 are still controlled on bipolarity dc bus
System keeps constant in 400V, and negative DC bus-bar voltage V2 is still controlled in 300V and keeps constant.Even dc bus loads
There is a certain bus control, in the case of another bus belt carries, i.e., in the case of extreme imbalance, have no effect on bipolarity dc bus
The accurate independent control of voltage, realizes asymmetrical voltage and the uneoupled control of unbalanced load.
During waveform shown in Fig. 7 is DC load switching at runtime, AC three phase network electric current and single-phase mains voltage,
The waveform of electric current.By Fig. 7 waveforms, during DC load switching at runtime, three-level converter AC input power
It is consistent with DC side power output, put forward control system and ensure stable operation under three-level converter High Power Factor.
The utility model carries new three-level converter topology and its system controller, and bipolarity dc bus can be achieved
Voltage independent control, and have the unbalanced situation of DC load compared with common-path interference.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
It is not new to this practicality although above-mentioned specific embodiment of the present utility model is described with reference to accompanying drawing
The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel need not pay the various modifications that creative work can make or deformation still in protection model of the present utility model
Within enclosing.
Claims (10)
1. a kind of topological structure for realizing bipolarity DC bus-bar voltage independent control, it is characterized in that：Including T-shaped three level translation
Device and single-phase uneven bridge arm, T-shaped three-level converter include three-phase bridge arm in parallel, are connected per phase bridge arm including two
IGBT is managed, and the IGBT that the midpoint side series connection both direction of each phase bridge arm is different is managed, and the filtered device of opposite side is connected with power network；
Connect two dc-link capacitances divided, dc bus and electric capacity midpoint composition bipolarity direct current mother between dc bus
Line, two electric capacity midpoints connect one end of the both direction difference IGBT pipes of each phase bridge arm, and each IGBT pipes are by control circuit
Drive, dc-link capacitances two unbalanced loads in parallel respectively of two divisions, list is provided between positive and negative dc bus
Mutually uneven bridge arm, bridge arm are made up of the IGBT pipes of two series connection, and bridge arm midpoint is followed by electric capacity midpoint by uneven inductance.
2. a kind of topological structure for realizing bipolarity DC bus-bar voltage independent control as claimed in claim 1, it is characterized in that：
The wave filter is filter inductance.
3. one kind realizes bipolarity DC bus-bar voltage autonomous control system, it is characterized in that：With controller, including T-shaped three electricity
Flat converter control module and single-phase uneven bridge arm control module, the T-shaped three-level converter control module, are configured as
Ensure to run under rectification or reversals unity power factor, adjust bipolarity dc bus total voltage；Single-phase uneven bridge arm
Control module is configured as adjusting negative DC bus-bar voltage, realizes bipolarity DC bus-bar voltage independent control.
4. one kind as claimed in claim 3 realizes bipolarity DC bus-bar voltage autonomous control system, it is characterized in that：The list
Mutually uneven bridge arm control module makes positive and negative dc bus have complete load capacity, wherein a certain bus can be unloaded, Ling Yimu
Tape carries to produce remains to stable operation under extreme non-equilibrium state.
5. one kind as claimed in claim 3 realizes bipolarity DC bus-bar voltage autonomous control system, it is characterized in that：The control
Device processed receives uneven inductive current and negative DC bus-bar voltage reference value, exports PWM modulation signal to drive single-phase imbalance
Bridge arm works.
6. one kind as claimed in claim 3 realizes bipolarity DC bus-bar voltage autonomous control system, it is characterized in that：The T
Type three-level converter control module is using outer voltage, the double -loop control structure of current inner loop.
7. one kind as claimed in claim 3 realizes bipolarity DC bus-bar voltage autonomous control system, it is characterized in that：The T
Type three-level converter control module collection line voltage mutually obtains the anglec of rotation of voltage vector, according to rotation by grid-connected lock
The power network current signal collected is carried out coordinate transform by angle, obtains current component under rotating coordinate system, and bipolarity direct current is female
The reference value that line total voltage and the difference of desired DC bus-bar voltage are controlled by being used as current inner loop d axles after PI controllers,
The reference value that current inner loop q axles control is zero.
8. one kind as claimed in claim 7 realizes bipolarity DC bus-bar voltage autonomous control system, it is characterized in that：The T
The reference value of type three-level converter control module current inner loop is with actual measured value respectively by the PI controllers of d axles and q axles
PWM waveform driving switch is obtained by SVPWM Vector Modulations after coordinate contravariant is changed to rest frame α, beta -axis component again
Pipe.
9. one kind as claimed in claim 3 realizes bipolarity DC bus-bar voltage autonomous control system, it is characterized in that：It is single-phase not
Bridge arm control module is balanced using outer voltage, the double -loop control structure of current inner loop.
10. one kind as claimed in claim 9 realizes bipolarity DC bus-bar voltage autonomous control system, it is characterized in that：Voltage
The difference of the desired negative DC bus-bar voltage of outer shroud and the negative DC bus-bar voltage gathered in real time after PI controllers by being used as electricity
The current reference value of inner ring is flowed, this reference value and the uneven inductive current difference of collection are passed through current inner loop PI controllers, controlled
Device output processed generates two switching tubes in the single-phase uneven bridge arm of PWM drive waveform compared with triangular carrier.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147101A (en) * | 2017-06-16 | 2017-09-08 | 山东大学 | Realize the topological structure and system of bipolarity DC bus-bar voltage independent control |
| CN108988669A (en) * | 2018-08-16 | 2018-12-11 | 厦门科华恒盛股份有限公司 | A kind of T-type rectification circuit and corresponding rectified three-phase circuit |
| CN112186732A (en) * | 2020-10-26 | 2021-01-05 | 国网江苏省电力有限公司电力科学研究院 | Switching circuit, switching device and control method for low-voltage bipolar power supply system |
| CN112787530A (en) * | 2021-01-11 | 2021-05-11 | 上海电气富士电机电气技术有限公司 | Three-level inverter with bus midpoint voltage compensation and control method thereof |
| CN115021536A (en) * | 2022-07-21 | 2022-09-06 | 南方电网科学研究院有限责任公司 | Voltage control method and device for bridge arm unit model |
-
2017
- 2017-06-16 CN CN201720706822.0U patent/CN206790097U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147101A (en) * | 2017-06-16 | 2017-09-08 | 山东大学 | Realize the topological structure and system of bipolarity DC bus-bar voltage independent control |
| CN107147101B (en) * | 2017-06-16 | 2023-08-25 | 山东大学 | Topological structure and system for realizing bipolar direct current bus voltage independent control |
| CN108988669A (en) * | 2018-08-16 | 2018-12-11 | 厦门科华恒盛股份有限公司 | A kind of T-type rectification circuit and corresponding rectified three-phase circuit |
| CN112186732A (en) * | 2020-10-26 | 2021-01-05 | 国网江苏省电力有限公司电力科学研究院 | Switching circuit, switching device and control method for low-voltage bipolar power supply system |
| CN112186732B (en) * | 2020-10-26 | 2023-03-31 | 国网江苏省电力有限公司电力科学研究院 | Switching circuit, switching device and control method for low-voltage bipolar power supply system |
| CN112787530A (en) * | 2021-01-11 | 2021-05-11 | 上海电气富士电机电气技术有限公司 | Three-level inverter with bus midpoint voltage compensation and control method thereof |
| CN112787530B (en) * | 2021-01-11 | 2023-04-07 | 上海电气富士电机电气技术有限公司 | Three-level inverter with bus midpoint voltage compensation and control method thereof |
| CN115021536A (en) * | 2022-07-21 | 2022-09-06 | 南方电网科学研究院有限责任公司 | Voltage control method and device for bridge arm unit model |
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