CN107154741A - A kind of control system and method based on MMC topological structures - Google Patents
A kind of control system and method based on MMC topological structures Download PDFInfo
- Publication number
- CN107154741A CN107154741A CN201710352810.7A CN201710352810A CN107154741A CN 107154741 A CN107154741 A CN 107154741A CN 201710352810 A CN201710352810 A CN 201710352810A CN 107154741 A CN107154741 A CN 107154741A
- Authority
- CN
- China
- Prior art keywords
- submodule
- sagging
- modulation
- information
- modulating wave
- 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
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
-
- 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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of control system based on MMC topological structures, including master controller and submodule block controller, wherein, master controller transmits modulating wave information to submodule, submodule modulating wave compensation rate is obtained according to the local information of submodule by submodule block controller, by submodule modulating wave compensation rate and modulating wave information superposition, the Balance route to submodule is realized.This invention simplifies the exchange of the information of MMC internal systems, communication pressure that submodule block balance causes and the computation burden of master controller are reduced, it is cost-effective.The invention also discloses a kind of control method based on MMC topological structures, submodule Balance route is realized by submodule block controller.
Description
Technical field
The present invention relates to Operation of Electric Systems and control technology field, in particular it relates to which a kind of be based on modular multilevel
The control system and method for transverter (MMC, Modular Multilevel Converter) topological structure.
Background technology
With increasingly sharpening for energy crisis and problem of environmental pollution, MMC relies on its more preferable quality of power supply, more flexible
Allocation plan, more powerful redundant ability receives significant attention and applies.This converter topology possesses the modularization of height
Structure, possesses very strong expansion capability, and is widely used in motor driving, SVC, electric propulsion, electric power
In electronic transformer and flexible direct current power transmission system.Except the conventional converter topology for being used as D.C. high voltage transmission using MMC
(as shown in Figure 1), it is energy-storage system that can also expand MMC, to provide power back-off.
Fig. 1 is three-phase MMC system topology schematic diagrames, as shown in figure 1, per two bridge arms, Mei Geqiao above and below mutually including
Arm is respectively by a bridge arm inductance L and n submodule (upper bridge arm submodule SMp1、 SMp2……SMpn, lower bridge arm submodule
SMn1、SMn2……SMnn) formation is cascaded, upper and lower bridge arm connects to form ac output end by respective bridge arm inductance L.Fig. 2 a
It is the MMC system Neutron module half-bridge structure schematic diagrames shown in Fig. 1, as shown in Figure 2 a, each submodule SM includes opening for series connection
Close device T1And T2, and T1And T2One diode D of difference inverse parallel1And D2, in T1And T2The two ends of series arm are in parallel one
Capacitor C.
For three-phase MMC energy-storage system topological structures, itself and MMC systems shown in Fig. 1 difference are submodule DC side
Whether energy storage device has been accessed.Fig. 2 b are MMC energy-storage system Neutron module half-bridge structure schematic diagrames, wherein, Bat represents energy storage
Battery, switching element T is parallel to instead of capacitor C1And T2The two ends of series arm.
Traditional control system based on MMC topological structures only has master controller, to ensure MMC normal operation, master control
Device processed generally uses open loop or closed-loop control.For MMC, centralized master controller needs to realize three control targes：Ring
Flow control, submodule Balance route and power voltage control.General Balance route (including the common son in order to realize submodule
Module capacitance electric voltage equalization or energy storage submodule battery SOC Balance route) need to gather submodule real time information, specifically, control
System module capacitance electric voltage equalization needs to gather submodule capacitor voltage information, and the battery SOC equilibrium of control energy storage submodule needs
Gather energy storage submodule battery SOC information.Fig. 3 is traditional centralized master controller data transfer schematic diagram, as shown in figure 3, will
The information collected is sent to master controller by the signal transmssion line of high speed, master controller by series of computation, compare,
The links such as controller regulation, obtain each submodule modulating wave, then modulation intelligence is quickly transferred to each submodule.More than
Although control can effectively ensure submodule Balance route, for tens at least, at most hundreds of submodules of MMC
For topological structure, the operational capability for the quantity, speed and master controller of information transfer requires high, greatly increases
The communication pressure and the computation burden of master controller caused due to MMC control submodule equilibriums.
The content of the invention
In view of the foregoing, it is an object to a kind of control system and method based on MMC topological structures are provided,
The information simplified between submodule and master controller is exchanged, to solve the control system of existing MMC topological structures due to submodule
The technical problem that the communication pressure that causes of block balance control is big and computation burden of master controller is big.
To achieve these goals, it is an aspect of the invention to provide a kind of control system based on MMC topological structures
System, including：
Master controller, modulating wave information is sent for the submodule into the MMC topological structures；And
Submodule block controller, submodule equalization information amount and submodule institute for gathering the submodule in real time
In the current information of bridge arm, the current information of bridge arm is modulated to submodule equalization information amount with reference to where the submodule
Submodule modulating wave compensation rate is obtained, submodule modulating wave compensation rate is overlapped with modulating wave information, so as to submodule
Carry out Balance route.
It is preferred that, submodule block controller is distributed in each submodule, and the submodule block controller is microprocessor.
It is preferred that, the submodule access electric capacity of the MMC topological structures, the submodule equalization information amount of the submodule
For the capacitance voltage information of the submodule.
It is preferred that, the submodule access energy-storage battery of the MMC topological structures, the submodule block balance letter of the submodule
Breath amount is state-of-charge (SOC, State Of Charge) information of the energy-storage battery.
It is preferred that, the submodule block controller is modulated to the submodule equalization information amount including lower vertical adjusting in phase
Sagging modulation includes in system, the phase：According to sagging proportionality coefficient in default phase, submodule equalization information amount and described
The current information of bridge arm, obtains the fundamental frequency AC compensation amount of the submodule, is used as the son of sagging modulation in phase where submodule
Module modulating wave compensation rate, is realized balanced in phase.
Further, it is preferable to, the submodule block controller is modulated to the submodule equalization information amount also to be included
Alternate sagging modulation, the alternate sagging modulation includes：It is equal according to default alternate sagging proportionality coefficient and the submodule
Weigh information content, obtains the HVDC Modulation offset voltage of the submodule, is compensated as the submodule modulating wave of alternate sagging modulation
Amount, realizes alternate equilibrium.
It is preferred that, the submodule block controller passes through pulse width modulation (PWM, Pulse Width
Modulation) closure of switching device in the submodule is controlled.
To achieve these goals, another aspect of the present invention provides a kind of control method based on MMC topological structures,
Including：
Modulating wave information is sent to the submodule of the MMC topological structures by master controller；
Gather submodule equalization information amount and the submodule place of the submodule in real time by submodule block controller
The current information of bridge arm, the current information of bridge arm is adjusted to the submodule equalization information amount with reference to where the submodule
Submodule modulating wave compensation rate is made, the submodule modulating wave compensation rate is overlapped with the modulating wave information, from
And Balance route is carried out to the submodule.
It is preferred that, the method being modulated to the submodule equalization information amount is included in sagging modulation in phase, the phase
Sagging modulation includes：
According to sagging proportionality coefficient, the submodule equalization information amount and submodule place bridge in default phase
The current information of arm, obtains the fundamental frequency AC compensation amount of the submodule, is mended as the submodule modulating wave of sagging modulation in phase
The amount of repaying, is realized balanced in phase.
Further, the method being modulated to the submodule equalization information amount also includes alternate sagging modulation, described
Alternate sagging modulation includes：
According to default alternate sagging proportionality coefficient and the submodule equalization information amount, the submodule is obtained
HVDC Modulation offset voltage, as the submodule modulating wave compensation rate of alternate sagging modulation, realizes alternate equilibrium.
Compared with prior art, the present invention has advantages below and beneficial effect：
The present invention replaces traditional centralized master controller using submodule block controller and master controller, by submodule control
Device processed realizes the Balance route of submodule using the local information of submodule, reduces logical between submodule and master controller
Believe quantity, it is to avoid communication pressure and the computation burden of master controller that submodule block balance is caused, reduce MMC topological structures
Requirement of the system to communication line and master controller computing capability, reduces cost, and simplify control saves equipment investment.
The present invention can realize submodule capacitor voltage Balance route in traditional MMC systems, can also be stored up in MMC
Submodule battery SOC Balance route can be realized in system.
Brief description of the drawings
Fig. 1 is three-phase MMC system topology schematic diagrames；
Fig. 2 a are the MMC system Neutron module half-bridge structure schematic diagrames shown in Fig. 1；
Fig. 2 b are MMC energy-storage system topological structure Neutron module half-bridge structure schematic diagrames；
Fig. 3 is traditional centralized master controller data transfer schematic diagram；
Fig. 4 is the control system schematic diagram of the invention based on MMC topological structures；
Fig. 5 is the control system data transfer schematic diagram of the invention based on MMC topological structures；
Fig. 6 is submodule block controller control block diagram of the present invention；
Fig. 7 is sagging curve schematic diagram in submodule phase of the present invention；
Fig. 8 is the alternate sagging curve schematic diagram of submodule of the present invention.
Embodiment
Embodiment of the present invention described below with reference to the accompanying drawings.One of ordinary skill in the art may recognize that
Arrive, without departing from the spirit and scope of the present invention, can be with a variety of modes or its combination to described
Embodiment is modified.Therefore, accompanying drawing and description are inherently illustrative, rather than for limiting the guarantor of claim
Protect scope.In addition, in this manual, accompanying drawing is drawn not in scale, and identical reference represents identical part.
By taking three-phase MMC system topologies as an example, the embodiment of the present invention is described in detail with reference to Fig. 4 to Fig. 8.
Fig. 4 is the control system schematic diagram of the invention based on MMC topological structures, as shown in figure 4, of the present invention be based on
The control system of MMC topological structures includes master controller and submodule block controller.
Wherein, master controller is used for the circulation control and power voltage control for realizing the MMC topological structures, submodule
Controller is used for the Balance route for realizing the MMC topological structures.The present invention is described only for Balance route.Wherein, it is main
The submodule that controller is used for into the MMC topological structures sends modulating wave information；Submodule block controller, it is preferably miniature
Processor, bridge arm where for gathering the submodule equalization information amount and submodule of the MMC topological structures Neutron module in real time
Current information, and bridge arm current information where combining submodule is modulated to submodule equalization information amount and obtains submodule
Modulating wave compensation rate, submodule modulating wave compensation rate is overlapped with modulating wave information, so as to be carried out to submodule balanced
Control.Wherein, the current information of submodule equalization information amount and submodule place bridge arm is the local information of submodule, without
Need the participation of master controller.
Preferably, submodule block controller is distributed in each submodule so that submodule is passed without entering row information with the external world
It is defeated, the local information of submodule only need to be gathered, the Balance route of submodule can be achieved only in submodule.
Wherein, MMC topological structures can be three-phase MMC system topology schematic diagrames as shown in Figure 1, and submodule connects
Enter conventional capacitive, now, the electricity of bridge arm where the local information of submodule includes the capacitance voltage information and submodule of submodule
Stream information (wherein, the current information of bridge arm where submodule includes bridge arm current direction, amplitude and phase information), by submodule
The submodule capacitor voltage information that block controller is collected is as submodule equalization information amount, to ensure submodule electric voltage equalization.
MMC topological structures can also be three-phase MMC energy-storage system topological structure schematic diagrames as shown in Figure 1, submodule access energy storage electricity
Pond, now, the electric current letter of bridge arm where the local information of submodule includes the energy-storage battery SOC information and submodule of submodule
Breath (wherein, the current information of bridge arm where submodule includes bridge arm current direction, amplitude and phase information), by submodule control
The submodule energy-storage battery SOC information that device processed is collected is as submodule equalization information amount, to ensure the SOC balance of submodule.
It should be noted that MMC topological structures can be the single-phase MMC systems of bridge arm and a lower bridge arm in only one of which
The MMC systems of system or many bridge arms of multiphase.The submodule of MMC topological structures can be half-bridge, full-bridge or mixed type
Module.
Fig. 5 is the control system data transfer schematic diagram of the invention based on MMC topological structures, as shown in Fig. 5, in this hair
Transmission information in bright control system, only master controller are sent to the modulating wave information of submodule, by submodule block controller root
Submodule Balance route is carried out according to the local information and modulating wave information of submodule, the letter of MMC internal systems is considerably reduced
Breath is exchanged, it is to avoid the communication pressure and the computation burden of master controller caused due to submodule Balance route, is saved into
This, simplify control is reduced investment outlay.
Fig. 6 is submodule block controller control block diagram of the present invention, as shown in fig. 6, with the MMC based on many bridge arms of multiphase
Illustrated exemplified by the control system of system topology, modulation of the submodule block controller to sub- module equalization information amount can be with
It is divided into phase u in sagging modulation and alternate sagging modulation, Fig. 6jRepresent modulating wave information, ipj、injThe upper and lower bridge of j phases is represented respectively
Arm current information (including current amplitude and phase information), is reduced to ip(n)j。
Submodule block controller is modulated by sagging modulation in phase to submodule equalization information amount, is realized balanced in phase.
Specifically, sagging modulation includes in phase：Pre-set sagging proportionality coefficient k in phase1, submodule is gathered according to submodule block controller
Local information (current information of bridge arm where wherein, the local information of submodule includes submodule, and capacitance voltage of block
Information or energy-storage battery SOC information), and the capacitance voltage information in submodule local information or energy-storage battery SOC information are made
For submodule equalization information amount smjk, by submodule equalization information amount smjkCompared with the set-point sm* of submodule block message, obtain
To both differences, and the current information of submodule place bridge arm is combined, according to droop control equation (1) in phase, obtained
The fundamental frequency AC compensation amount of submodule, as the submodule modulating wave compensation rate of sagging modulation in phase, is realized balanced in phase.
Fig. 7 is sagging curve schematic diagram in submodule phase of the present invention, as shown in fig. 7, with based on MMC energy-storage systems topology
Exemplified by the submodule Balance route of structure, abscissa Δ SOC represents the submodule block balance letter obtained according to submodule local information
Breath amount smjkWith sm* difference, according to droop control equation (1) in phase, by sagging proportionality coefficient k in the phase pre-set1
It is multiplied with abscissa Δ SOC and obtains ordinate K (K is only as sagging proportionality coefficient k in phase1It is multiplied and obtains with abscissa Δ SOC
Numerical value, have no concrete meaning), multiplied by with the current information of bridge arm where submodule, obtain the fundamental frequency AC compensation of submodule
Amount, as the submodule modulating wave compensation rate of sagging modulation in phase, is realized balanced in phase.
In formula：Δu1p_jk、Δu1n_jkThe modulating wave of the upper and lower bridge arm submodule of j phases of sagging modulation in phase is represented respectively
Compensation rate；k1Represent in phase the slope of sagging curve in phase in sagging proportionality coefficient, i.e. Fig. 7；ipj、 injRepresent the upper and lower bridge of j phases
The bridge arm current of arm；smjkRepresent the equalization information amount of j k-th of submodule of phase, k=1,2 ... n ... 2n-1,2n；sm*Represent son
The set-point of module information.
The fundamental frequency AC compensation amount of submodule and modulating wave information are overlapped, so as to carry out balanced control to submodule
System.
Further, submodule block controller is modulated to sub- module equalization information amount also includes alternate sagging modulation.Tool
Body, alternate sagging modulation includes：Pre-set alternate sagging proportionality coefficient k2, the submodule gathered according to submodule block controller
Block local information, believes the capacitance voltage information or energy-storage battery SOC information in submodule local information as submodule block balance
Breath amount smjk, by submodule equalization information amount smjkCompared with the set-point sm* of submodule block message, both differences are obtained,
The HVDC Modulation offset voltage of submodule is obtained according to alternate droop control equation (2), the submodule of alternate sagging modulation is used as
Block modulating wave compensation rate, realizes alternate equilibrium.
Fig. 8 is the alternate sagging curve schematic diagram of submodule of the present invention, with the submodule based on MMC energy-storage system topological structures
Exemplified by block balance control, abscissa Δ SOC represents the submodule equalization information amount sm obtained according to submodule local informationjkWith
Sm* difference, according to alternate droop control equation (2), by the alternate sagging proportionality coefficient k pre-set2With abscissa Δ
SOC, which is multiplied, obtains ordinate Ud, UdThe HVDC Modulation offset voltage of each submodule modulating wave superposition is represented, submodule is used as
Modulating wave compensation rate, realize alternate equilibrium.
Δu2_jk=k2(smjk-sm*) (2)
In formula：Δu2_jkRepresent the modulating wave compensation rate of the submodule of alternate droop control；k2Represent alternate sagging ratio
The slope of alternate sagging curve in coefficient, i.e. Fig. 8；smjkRepresent the equalization information amount of j k-th of submodule of phase, k=1,2 ... n ...
2n-1,2n；sm*Represent the set-point of submodule block message.
The HVDC Modulation offset voltage of submodule and above-mentioned fundamental frequency AC compensation amount are compensated as submodule modulating wave
Amount, while being overlapped with the modulating wave information that master controller is sent to submodule, so as to realize the equilibrium control to submodule
System.Preferably, the closure that submodule block controller passes through switch tube device in phase-shifting carrier wave pulse width modulation controlled submodule.
It should be noted that in the present invention, not to sagging proportionality coefficient k in phase1With alternate sagging proportionality coefficient k2
Make sagging proportionality coefficient k in specific restriction, phase1With alternate sagging proportionality coefficient k2Numerical value scope all in accordance with specific MMC
Topological structure and set.
Because submodule parameter information is basically identical, so, sagging proportionality coefficient k in the phase of all submodules1Basic phase
Together, the alternate sagging proportionality coefficient k of all submodules2It is essentially identical, and k1And k2And differ.
The above-mentioned control system for illustrating the present invention by taking the MMC system topologies of many bridge arms of multiphase as an example, and the present invention is simultaneously
Not limited to this, is equally applicable to the control of the single-phase MMC system topologies based on bridge arm in only one of which and a lower bridge arm
System, and for single-phase MMC systems, only need to be by sagging modulation submodule equalization information amount in phase, you can realize the equal of submodule
Weighing apparatus control.
Another aspect of the present invention is to provide a kind of control method based on MMC topological structures, including：
Modulating wave information is sent to the submodule of the MMC topological structures by master controller；
The electricity of bridge arm where gathering the submodule equalization information amount and submodule of submodule in real time by submodule block controller
Stream information, the current information of bridge arm is modulated the tune for obtaining submodule to submodule equalization information amount with reference to where submodule
Ripple compensation rate processed, by modulating wave compensation rate and modulating wave information superposition, so as to carry out Balance route to submodule.
Preferably, the method being modulated to submodule equalization information amount includes sagging modulation in phase, specifically, according to
The current information of sagging proportionality coefficient, submodule equalization information amount and bridge arm where submodule, obtains submodule in default phase
The fundamental frequency AC compensation amount of block, as the submodule modulating wave compensation rate of sagging modulation in phase, is realized balanced in phase.
Further, for the control system based on many bridge arm MMC topological structures of multiphase, to submodule equalization information amount
The method being modulated also includes alternate sagging modulation, specifically, according to default alternate sagging proportionality coefficient and submodule
Equalization information amount, obtains the HVDC Modulation offset voltage of submodule, is compensated as the submodule modulating wave of alternate sagging modulation
Amount, realizes alternate equilibrium.
The modulating wave information that above-mentioned fundamental frequency AC compensation amount and HVDC Modulation offset voltage are sent with master controller simultaneously
Superposition, realizes the Balance route of submodule.
In summary, the present invention replaces centralized master controller, master controller using master controller and submodule block controller
The circulation control and power voltage control of MMC topological structures need to be only realized, MMC topological structures are realized by submodule block controller
Submodule Balance route, enormously simplify submodule and is exchanged with the information of master controller.Modulating wave information is sent by master controller
To submodule, submodule equalization information amount is obtained according to the submodule local information of collection by submodule block controller, and to submodule
Block balance information content is modulated the modulating wave compensation rate for obtaining submodule, and modulating wave compensation rate is folded with modulating wave information
Plus, so as to realize the Balance route to submodule.In submodule block controller control section, sagging modulation is introduced, phase can be divided into
Interior sagging modulation and alternate sagging modulation, modulation is respectively obtained with reference to droop control equation in phase and alternate droop control equation
Ripple compensation rate, and the modulating wave information superposition by both compensation rates simultaneously with submodule, realize the Balance route of submodule.
Submodule need to only gather local information, greatly reduce the information transfer between submodule and master controller, drop
Low master controller calculates pressure and information transfer pressure, simplify control.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of control system based on MMC topological structures, it is characterised in that including：
Master controller, modulating wave information is sent for the submodule into the MMC topological structures；And
Submodule block controller, bridge arm where for gathering the submodule equalization information amount and the submodule of the submodule in real time
Current information, the submodule equalization information amount is modulated with reference to the current information of bridge arm where the submodule and obtained
Submodule modulating wave compensation rate, the submodule modulating wave compensation rate is overlapped with the modulating wave information, so as to institute
State submodule and carry out Balance route.
2. the control system according to claim 1 based on MMC topological structures, it is characterised in that the submodule control
Device is distributed in each submodule, and the submodule block controller is microprocessor.
3. the control system according to claim 1 based on MMC topological structures, it is characterised in that the MMC topological structures
Submodule access electric capacity, the submodule equalization information amount of the submodule is the capacitance voltage information of the submodule.
4. the control system according to claim 1 based on MMC topological structures, it is characterised in that the MMC topological structures
Submodule access energy-storage battery, the submodule equalization information amount of the submodule believes for the state-of-charge of the energy-storage battery
Breath.
5. the control system according to claim 1 based on MMC topological structures, it is characterised in that the submodule control
Device is modulated to the submodule equalization information amount including sagging modulation includes in sagging modulation, the phase in phase：According to pre-
If phase in bridge arm where sagging proportionality coefficient, submodule equalization information amount and the submodule current information, obtain institute
The fundamental frequency AC compensation amount of submodule is stated, as the submodule modulating wave compensation rate of sagging modulation in phase, is realized balanced in phase.
6. the control system according to claim 5 based on MMC topological structures, it is characterised in that the submodule control
Device is modulated to the submodule equalization information amount also includes alternate sagging modulation, and the alternate sagging modulation includes：According to
Default alternate sagging proportionality coefficient and the submodule equalization information amount, obtain the HVDC Modulation compensation electricity of the submodule
Pressure, as the submodule modulating wave compensation rate of alternate sagging modulation, realizes alternate equilibrium.
7. the control system according to claim 1 based on MMC topological structures, it is characterised in that the submodule control
Device controls the closure of switching device in the submodule by pulse width modulation.
8. a kind of control method based on MMC topological structures, it is characterised in that including：
Modulating wave information is sent to the submodule of the MMC topological structures by master controller；
Bridge arm where gathering the submodule equalization information amount and the submodule of the submodule in real time by submodule block controller
Current information, the submodule equalization information amount is modulated with reference to the current information of bridge arm where the submodule and obtained
Submodule modulating wave compensation rate, the submodule modulating wave compensation rate is overlapped with the modulating wave information, so as to institute
State submodule and carry out Balance route.
9. the control method according to claim 8 based on MMC topological structures, it is characterised in that
The method being modulated to the submodule equalization information amount includes sagging modulation bag in sagging modulation in phase, the phase
Include：
According to the electricity of sagging proportionality coefficient, the submodule equalization information amount and submodule place bridge arm in default phase
Stream information, obtains the fundamental frequency AC compensation amount of the submodule, as the submodule modulating wave compensation rate of sagging modulation in phase, real
It is now balanced in phase.
10. the control method of MMC topological structures according to claim 9, it is characterised in that
The method being modulated to the submodule equalization information amount also includes alternate sagging modulation, the alternate sagging modulation bag
Include：
According to default alternate sagging proportionality coefficient and the submodule equalization information amount, the direct current for obtaining the submodule is adjusted
Offset voltage processed, as the submodule modulating wave compensation rate of alternate sagging modulation, realizes alternate equilibrium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710352810.7A CN107154741B (en) | 2017-05-18 | 2017-05-18 | A kind of control system and method based on MMC topological structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710352810.7A CN107154741B (en) | 2017-05-18 | 2017-05-18 | A kind of control system and method based on MMC topological structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107154741A true CN107154741A (en) | 2017-09-12 |
| CN107154741B CN107154741B (en) | 2019-06-07 |
Family
ID=59792982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710352810.7A Active CN107154741B (en) | 2017-05-18 | 2017-05-18 | A kind of control system and method based on MMC topological structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107154741B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612355A (en) * | 2017-10-17 | 2018-01-19 | 国网江苏省电力公司南通供电公司 | A kind of distributed director of modularization matrix converter |
| CN108336752A (en) * | 2018-04-04 | 2018-07-27 | 国网江苏省电力有限公司泗洪县供电分公司 | The capacitor voltage balance method of the uncontrollable pre-charging stage of modularization multi-level converter |
| CN109039136A (en) * | 2018-09-27 | 2018-12-18 | 唐瑭 | A kind of power assembly system based on modular multi-level converter |
| CN109849736A (en) * | 2018-12-19 | 2019-06-07 | 山东大学 | The charging system and method for the comprehensive transformation system of plug-in hybrid-electric car |
| CN110690723A (en) * | 2019-10-31 | 2020-01-14 | 上海交通大学 | Control method of energy storage type modular multilevel converter in offshore wind power system |
| CN111103486A (en) * | 2019-12-23 | 2020-05-05 | 国家电网有限公司 | Flexible direct current converter valve submodule type identification method and valve base controller |
| CN114784843A (en) * | 2022-05-17 | 2022-07-22 | 中国电力工程顾问集团中南电力设计院有限公司 | Hybrid converter valve submodule topology identification method |
| CN114844174A (en) * | 2022-06-07 | 2022-08-02 | 绍兴建元电力集团有限公司 | Interphase SOC (System on chip) balance control method and system for cascaded H-bridge energy storage system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102148579A (en) * | 2010-12-20 | 2011-08-10 | 中国电力科学研究院 | Equitime constant reduced submodule plate simulating plurality of submodules of MMC (Multi-level Modular Converte) |
| CN103545877A (en) * | 2013-09-22 | 2014-01-29 | 上海交通大学 | In-phase SOC (state of charge) balancing method of MMC battery energy storage system |
| CN103560687A (en) * | 2013-09-27 | 2014-02-05 | 株洲变流技术国家工程研究中心有限公司 | Modular multilevel converter system and control system and control method thereof |
| CN103684014A (en) * | 2013-12-20 | 2014-03-26 | 浙江省电力设计院 | Method applicable to communication between sub-module controller and upper layer controller of modular multi-level converter |
-
2017
- 2017-05-18 CN CN201710352810.7A patent/CN107154741B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102148579A (en) * | 2010-12-20 | 2011-08-10 | 中国电力科学研究院 | Equitime constant reduced submodule plate simulating plurality of submodules of MMC (Multi-level Modular Converte) |
| CN103545877A (en) * | 2013-09-22 | 2014-01-29 | 上海交通大学 | In-phase SOC (state of charge) balancing method of MMC battery energy storage system |
| CN103560687A (en) * | 2013-09-27 | 2014-02-05 | 株洲变流技术国家工程研究中心有限公司 | Modular multilevel converter system and control system and control method thereof |
| CN103684014A (en) * | 2013-12-20 | 2014-03-26 | 浙江省电力设计院 | Method applicable to communication between sub-module controller and upper layer controller of modular multi-level converter |
Non-Patent Citations (1)
| Title |
|---|
| 戴珂 等: "改进型MMC-STATCOM的建模及分层控制", 《电工技术学报》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612355A (en) * | 2017-10-17 | 2018-01-19 | 国网江苏省电力公司南通供电公司 | A kind of distributed director of modularization matrix converter |
| CN107612355B (en) * | 2017-10-17 | 2020-07-03 | 国网江苏省电力公司南通供电公司 | Distributed controller of modular matrix converter |
| CN108336752A (en) * | 2018-04-04 | 2018-07-27 | 国网江苏省电力有限公司泗洪县供电分公司 | The capacitor voltage balance method of the uncontrollable pre-charging stage of modularization multi-level converter |
| CN108336752B (en) * | 2018-04-04 | 2021-11-26 | 国网江苏省电力有限公司宿迁供电分公司 | Capacitance voltage balancing method for uncontrollable pre-charging stage |
| CN109039136A (en) * | 2018-09-27 | 2018-12-18 | 唐瑭 | A kind of power assembly system based on modular multi-level converter |
| CN109849736A (en) * | 2018-12-19 | 2019-06-07 | 山东大学 | The charging system and method for the comprehensive transformation system of plug-in hybrid-electric car |
| CN110690723A (en) * | 2019-10-31 | 2020-01-14 | 上海交通大学 | Control method of energy storage type modular multilevel converter in offshore wind power system |
| CN110690723B (en) * | 2019-10-31 | 2021-03-19 | 上海交通大学 | Control method of energy storage type modular multilevel converter in offshore wind power system |
| CN111103486A (en) * | 2019-12-23 | 2020-05-05 | 国家电网有限公司 | Flexible direct current converter valve submodule type identification method and valve base controller |
| CN111103486B (en) * | 2019-12-23 | 2022-05-20 | 国家电网有限公司 | Flexible direct current converter valve submodule type identification method and valve base controller |
| CN114784843A (en) * | 2022-05-17 | 2022-07-22 | 中国电力工程顾问集团中南电力设计院有限公司 | Hybrid converter valve submodule topology identification method |
| CN114844174A (en) * | 2022-06-07 | 2022-08-02 | 绍兴建元电力集团有限公司 | Interphase SOC (System on chip) balance control method and system for cascaded H-bridge energy storage system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107154741B (en) | 2019-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107154741A (en) | A kind of control system and method based on MMC topological structures | |
| US11133752B2 (en) | Modular multilevel converter with multi-port DC power flow control and control method thereof | |
| CN105490552B (en) | A kind of solid-state transformer and control method based on MMC | |
| US8824179B2 (en) | Soft-switching high voltage power converter | |
| CN106602565B (en) | A kind of electric automobile charging station power supply system based on solid-state transformer | |
| CN104917418B (en) | A kind of accumulation energy type MMC current transformers of use battery current independent control | |
| CN107612050A (en) | A kind of mixing micro-grid system and its control method for coordinating based on virtual synchronous motor | |
| CN103597692B (en) | Compensation system for medium-pressure or high pressure application | |
| CN106664007A (en) | Voltage source converter and control thereof | |
| CN108574420A (en) | Technics of Power Electronic Conversion unit and system | |
| US20230238803A1 (en) | Directly-connected high-voltage battery energy storage system (bess) and control method thereof | |
| CN104201910A (en) | Sub-module capacitance voltage balance control method for three-phase modular multilevel converter applicable to VSC-HVDC (voltage source converter-high voltage direct current) | |
| CN103904635A (en) | Topological structure of multi-port DC transformer substation and control method thereof | |
| CN105027403B (en) | Control circuit | |
| CN104201909A (en) | Three-phase modularized multi-level converter for VSC-HVDC (voltage source converter-high voltage DC) and carrier phase-shifting modulation method of converter | |
| CN106712024A (en) | Energy Internet for electric car charging station | |
| CN106329979A (en) | MMC double circulation suppression method for high-speed permanent magnet motor system | |
| CN107332257A (en) | A kind of STATCOM and its control method | |
| CN104868762A (en) | DES (distributed energy storage) power electronic transformer, and control method therefor | |
| CN110429629A (en) | A kind of energy accumulation current converter and its control method based on NPC three-level topology | |
| CN106099969B (en) | A kind of megawatt-grade high-power wired in parallel control method based on series inductance | |
| CN105576687B (en) | A kind of AC/DC energy storage PCU Power Conditioning Unit and its control method | |
| CN107579666A (en) | Multi-functional hybrid power electronic transformer and control method based on MMC matrix converters | |
| CN204835940U (en) | Power electronic transformer of dispersion energy storage | |
| CN209329699U (en) | A kind of quality of voltage compensation device |
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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210520 Address after: 100176 room 212, block B, 18 Xihuan South Road, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee after: PUSHON (BEIJING) ELECTRIC Co.,Ltd. Address before: 100044 Beijing city Haidian District Shangyuan Village No. 3 Patentee before: Beijing Jiaotong University |