CN106154086A - A kind of MMC dynamic analog submodule unit with topological switching capability - Google Patents
A kind of MMC dynamic analog submodule unit with topological switching capability Download PDFInfo
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- CN106154086A CN106154086A CN201610641276.7A CN201610641276A CN106154086A CN 106154086 A CN106154086 A CN 106154086A CN 201610641276 A CN201610641276 A CN 201610641276A CN 106154086 A CN106154086 A CN 106154086A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The present invention discloses a kind of MMC dynamic analog submodule unit with topological switching capability, including at least one DC support electric capacity, equalizing resistance, by-pass switch, four power semiconductors, four diodes, three permutatoies and linear quadratic control protected location.This MMC dynamic analog submodule unit can be controlled by permutator and power semiconductor conducting locking realizes the switching between semi-bridge type, bridge-type and class bridge-type topological structure of the converter valve submodule unit, meet the demand carrying out dynamic analog test in MMC dynamic analog test for different submodule unit topologys, avoid dynamic model repeated construction cost, reduce the investment of MMC dynamic analog test platform entirety and workload, improve test platform work efficiency, there is the highest motility and versatility.Invention additionally discloses the MMC dynamic analog inverter of a kind of thus MMC dynamic analog submodule unit cascade composition.
Description
Technical field
The invention belongs to dynamic analog test field, a kind of MMC dynamic analog with topological switching capability
Intend submodule unit.
Background technology
Modularization multi-level converter (Modular Multilevel Converter, MMC) passes through several submodules
Unit concatenated in order in the same direction realizes high-voltage large-capacity output, it is not necessary to directly connecting of switching device, it is to avoid device is directly gone here and there
Join the requirement to consistent triggering property, additionally have that switching frequency is low, favorable expandability, output voltage waveforms quality high, run and damage
Consume the plurality of advantages such as low, be therefore widely used in flexible AC and DC transmission of electricity occasion, supply on island and load intensive district, city at present
The fields such as electricity, back-to-back networking and regenerative resource are grid-connected obtain extensively application, have huge development prospect.
It is big that MMC dynamic analog test platform uses low power MMC dynamic analog submodule unit to replace in Practical Project
The submodule unit of power, the duty of analog module multilevel converter, to verify that plan is protected in the control of Practical Project
Slightly, the key technology such as the control strategy of valve-based electronics control system, be the important skill studying modularization multi-level converter at present
Art means.
Submodule unit topological structure conventional in engineering has half-bridge structure, full bridge structure, class full bridge structure etc., but,
The MMC dynamic analog test platform built at present generally exists that MMC dynamic analog submodule unit topology is single, is difficult to adjust flexibly
The shortcomings such as joint, it is impossible to realize the conversion of various topological structures in a submodule unit, when ASM unit topology is sent out
During changing, it is impossible to meet the demand of dynamic analog test, need again to build new MMC dynamic analog test platform.If
Build dynamic analog test platform respectively for different submodule unit topological structure, workload can be caused huge and construction cost
High, the work efficiency of MMC dynamic analog test platform is low simultaneously.Therefore, there is the MMC of multiple canonical topology switching capability
Dynamic analog submodule unit has great importance.
Summary of the invention
For above-mentioned technical problem, the technical problem to be solved is to provide a kind of has topological switching capability
MMC dynamic analog submodule unit, the present invention disclosure satisfy that in MMC dynamic analog test to enter for different submodule unit topologys
The demand of Mobile state simulation test, reduces MMC dynamic analog test platform construction cost and workload, improves test platform work
Efficiency, has the highest motility and versatility.
In order to reach above-mentioned purpose, the solution of the present invention is:
A kind of MMC dynamic analog submodule unit with topological switching capability, including at least one DC support electric capacity,
Equalizing resistance, by-pass switch, four power semiconductors, four diodes, three permutatoies and linear quadratic control protection are single
Unit.Wherein, equalizing resistance is parallel with one another with all DC support electric capacity.
The emitter stage of the first power semiconductor and the colelctor electrode of the second power semiconductor are connected, the first power semiconductor
Element colelctor electrode and anti-paralleled diode negative electrode thereof are connected with electric capacity anode, the second power semiconductor emitter stage and anti-the most also
Connection diode anode is connected with electric capacity negative terminal；
The emitter stage of the 3rd power semiconductor and the colelctor electrode of the 4th power semiconductor are connected, the 3rd power semiconductor
One end of element colelctor electrode and anti-paralleled diode negative electrode and the 3rd permutator is connected, and the 4th power semiconductor is launched
Pole and anti-paralleled diode anode thereof are connected with electric capacity negative terminal；
By-pass switch one end is connected in the brachium pontis midpoint of the first power semiconductor and the second power semiconductor, separately
One end is connected with one end of the first permutator, the second permutator；
First permutator one end couples electric capacity negative terminal, one end phase of the other end and by-pass switch and the second permutator
Connection；Second permutator one end is connected in the 3rd power semiconductor and the brachium pontis midpoint of the 4th power semiconductor, separately
One end is connected with one end of by-pass switch and the first permutator；3rd permutator one end is connected in the first semiconductor power element
The colelctor electrode of part, the other end is connected in the colelctor electrode of the 3rd power semiconductor.
Linear quadratic control protected location couples four power semiconductors, three permutatoies and by-pass switch respectively
Control end.
A kind of by front arbitrary as described in a kind of MMC dynamic analog submodule unit with topological switching capability be basic
The MMC dynamic analog inverter of unit composition, comprises several MMC dynamic analog submodule unit, defines the first power and partly lead
The first end as this MMC dynamic analog submodule unit is drawn at the brachium pontis midpoint of body member and the second power semiconductor,
The union end of definition by-pass switch, the first permutator and the second permutator is drawn as this MMC dynamic analog submodule list
Second end of unit, by the first end of several MMC dynamic analog submodule unit and adjacent MMC dynamic analog submodule unit
Second end concatenated in order in the same direction composition MMC dynamic analog inverter.
A kind of MMC dynamic analog submodule unit with topological switching capability of the present invention, compared with prior art,
Have the advantages that and can be controlled by permutator and power semiconductor conducting locking realizes a submodule unit and exists
Switching between semi-bridge type, bridge-type and class bridge-type topological structure, meets in MMC dynamic analog test for different submodules
Module unit topological structure carries out the demand of dynamic analog test, it is to avoid dynamic model repeated construction cost, reduces MMC dynamic analog test
The investment of platform entirety and workload, improve test platform work efficiency, have the highest motility and versatility.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram of the present invention.
Fig. 2 is the semi-bridge type structural representation that the present invention switches.
Fig. 3 is what the present invention switched bridge-type structural representation.
Fig. 4 is the class bridge-type structural representation that the present invention switches.
Fig. 5 is the modularization multi-level converter schematic diagram of MMC dynamic analog submodule unit of the present invention composition.
Detailed description of the invention
Below with reference to accompanying drawing, technical scheme and beneficial effect are described in detail.
The present invention provides a kind of MMC dynamic analog submodule unit with topological switching capability, multiple submodule unit
Concatenated in order may be constructed MMC dynamic analog inverter in the same direction, turns on locking by permutator control and power semiconductor real
The switching between semi-bridge type, bridge-type and class bridge-type topological structure of the existing converter valve submodule unit, meets MMC and moves
State simulation test carries out the demand of dynamic analog test for different submodule unit topologys.
As it is shown in figure 1, a kind of MMC dynamic analog submodule unit with topological switching capability of the present invention, including
DC support electric capacity C, equalizing resistance R, the first power semiconductor T1, the second power semiconductor T2, the 3rd power half
Conductor element T3, the 4th power semiconductor T4, first diode D1, second diode D2, the 3rd diode D3,
4th diode D4, by-pass switch K1, the first permutator S1, the second permutator S2, the 3rd permutator S3 and secondary
Control and protection unit KZ, wherein Support Capacitor C comprises an electric capacity or at least two electric capacity parallel with one another, equalizing resistance R
Parallel with one another with all DC support electric capacity.
Linear quadratic control protected location KZ couples four power semiconductors, three permutatoies and by-pass switch respectively
Control end.
A kind of MMC dynamic analog submodule unit with topological switching capability of the present invention, can pass through permutator control
System and power semiconductor conducting locking realize a MMC dynamic analog submodule unit at semi-bridge type, bridge-type and class full-bridge
Switching between type topological structure, meets in MMC dynamic analog test and carries out dynamically for different submodule unit topological structure
The demand of simulation test.
The topological switching of MMC dynamic analog submodule unit of the present invention mainly includes three kinds of typical structures: semi-bridge type
Structure, bridge-type structure, class bridge-type structure.Below with reference to Figure of description and be embodied as example, technical scheme is entered
Row describes in detail.
Embodiment one: semi-bridge type topological structure.
As in figure 2 it is shown, the first permutator S1 Guan Bi, the second permutator S2 disconnects, and the 3rd permutator S3 disconnects, this
Time the 3rd power semiconductor T3, the 4th power semiconductor T4, the 3rd diode D3, the 4th diode D4 do not connect
Entering circuit, submodule unit is semi-bridge type topological structure.
Embodiment two: bridge-type topological structure.
As it is shown on figure 3, the first permutator S1 disconnects, the second permutator S2 Guan Bi, the 3rd permutator S3 Guan Bi, this
Shi Suoyou components and parts access circuit, and submodule unit is bridge-type topological structure.
Embodiment three: class bridge-type topological structure.
As shown in Figure 4, the first permutator S1 disconnects, the second permutator S2 Guan Bi, the 3rd permutator S3 Guan Bi, this
Shi Suoyou components and parts access circuit, and time properly functioning, the 3rd power semiconductor T3 is held off, without flow through electric current,
Can from circuit default fall, the most antiparallel 3rd diode flows through electric current, submodule unit be class bridge-type topology
Structure.
As it is shown in figure 5, be the modularization multi-level converter signal of MMC dynamic analog submodule unit of the present invention composition
Figure, comprises several aforementioned a kind of MMC dynamic analog submodule unit with topological switching capability, the first merit described in definition
The brachium pontis midpoint of rate semiconductor element T1 and the second power semiconductor T2 is drawn as this MMC dynamic analog submodule unit
The first end, define described by-pass switch K1, the first permutator S1 and the second permutator S2 union end draw as should
Second end of MMC dynamic analog submodule unit, by the first end and the adjacent MMC of several MMC dynamic analog submodule unit
The second end concatenated in order in the same direction composition MMC dynamic analog inverter of dynamic analog submodule unit.
Above in conjunction with accompanying drawing, embodiments of the present invention are explained in detail, are only the technological thought that the present invention is described,
Protection scope of the present invention can not be limited with this.Person of an ordinary skill in the technical field is to be understood that: to the present invention's
Detailed description of the invention is modified or equivalent, and the technological thought proposed without departing from the present invention and any amendment of scope
Or equivalent all should contain in the middle of the scope of the claims in the present invention.
Claims (9)
1. there is a MMC dynamic analog submodule unit for topological switching capability, including at least one DC support electric capacity, all
Piezoresistance, by-pass switch, four power semiconductors, four diodes and linear quadratic control protected location, connected mode is: the
One power semiconductor and anti-paralleled diode thereof, constitute with the second power semiconductor and anti-paralleled diode thereof and connect
Structure；This cascaded structure constitutes in parallel with DC support electric capacity and equalizing resistance again；3rd power semiconductor and anti-the most also
Connection diode, constitutes cascaded structure with the 4th power semiconductor and anti-paralleled diode thereof；4th power semiconductor
Emitter stage be connected with electric capacity negative；One end of by-pass switch is connected in the emitter stage of the first power semiconductor；Its feature
Being, described MMC dynamic analog submodule unit also includes that three permutatoies, first permutator one end couple DC support
Electric capacity negative terminal, the other end is connected with one end of by-pass switch and the second permutator；Second permutator one end is connected in the 3rd
The emitter stage of power semiconductor, the other end is connected with one end of by-pass switch and the first permutator；3rd permutator
One end is connected in the colelctor electrode of the first power semiconductor, and the other end is connected in the colelctor electrode of the 3rd power semiconductor.
A kind of MMC dynamic analog submodule unit with topological switching capability, its feature exists
An electric capacity or at least two electric capacity parallel with one another, equalizing resistance and all direct currents is comprised in: described DC support electric capacity
Support Capacitor is parallel with one another.
A kind of MMC dynamic analog submodule unit with topological switching capability, its feature exists
In: the emitter stage of the first power semiconductor and the colelctor electrode of the second power semiconductor are connected, the first power semiconductor
Colelctor electrode and anti-paralleled diode negative electrode thereof are connected with electric capacity anode, the second power semiconductor emitter stage and inverse parallel two thereof
Pole tube anode is connected with electric capacity negative terminal.
A kind of MMC dynamic analog submodule unit with topological switching capability, its feature exists
In: the emitter stage of the 3rd power semiconductor and the colelctor electrode of the 4th power semiconductor are connected, the 3rd power semiconductor
One end of colelctor electrode and anti-paralleled diode negative electrode and the 3rd permutator is connected, the 4th power semiconductor emitter stage and
Its anti-paralleled diode anode is connected with electric capacity negative terminal.
A kind of MMC dynamic analog submodule unit with topological switching capability, its feature exists
In: MMC dynamic analog submodule unit also include by-pass switch, by-pass switch one end be connected in the first power semiconductor and
The brachium pontis midpoint of the second power semiconductor, one end of the other end and the first permutator, the second permutator is connected.
A kind of MMC dynamic analog submodule unit with topological switching capability, its feature exists
In: linear quadratic control protected location couples four power semiconductors, three permutatoies and the control of by-pass switch respectively
End.
A kind of MMC dynamic analog submodule unit with topological switching capability, its feature exists
In: the method being switched to full-bridge or class full-bridge topology by half-bridge topology is separately the first permutator, the second conversion of simultaneously closing
Switch and the 3rd permutator.
A kind of MMC dynamic analog submodule unit with topological switching capability, its feature exists
In: the method being switched to half-bridge topology by full-bridge or class full-bridge topology is first permutator that closes, the most separately the second conversion
Switch and the 3rd permutator.
9. one kind with a kind of MMC dynamic analog submodule list with topological switching capability as described in claim 1-8 is arbitrary
Unit is the MMC dynamic analog inverter of elementary cell composition, it is characterised in that: comprise several MMC dynamic analog submodule lists
Unit, the brachium pontis midpoint defining the first power semiconductor and the second power semiconductor is drawn as this MMC dynamic analog
First end of submodule unit, the union end of definition by-pass switch, the first permutator and the second permutator is drawn as being somebody's turn to do
Second end of MMC dynamic analog submodule unit, by the first end and the adjacent MMC of several MMC dynamic analog submodule unit
The second end concatenated in order in the same direction composition MMC dynamic analog inverter of dynamic analog submodule unit.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107104418A (en) * | 2017-04-28 | 2017-08-29 | 南京南瑞继保电气有限公司 | Converter valve submodule unit, modularization multi-level converter and its control method |
| WO2018024207A1 (en) * | 2016-08-05 | 2018-02-08 | 南京南瑞继保电气有限公司 | Reconfigurable mmc sub-module unit and control unit thereof |
| CN107769598A (en) * | 2017-10-26 | 2018-03-06 | 华北电力大学 | A kind of new Two-port netwerk half-bridge full-bridge mixing submodule MMC topologys |
| CN108574288A (en) * | 2018-05-31 | 2018-09-25 | 湖南五凌电力科技有限公司 | The pressure method for handover control of capacitance in a kind of voltage-type high-voltage reactive generator |
| CN108763835A (en) * | 2018-07-06 | 2018-11-06 | 国网浙江省电力有限公司电力科学研究院 | Modularization multi-level converter topology reconstruction type submodule and its modeling method |
| CN109671344A (en) * | 2018-12-28 | 2019-04-23 | 国家电网有限公司 | A kind of topological structure for direct current transmission and distribution constructional dynamic simulation experimental system |
| CN111614267A (en) * | 2020-06-17 | 2020-09-01 | 深圳威迈斯新能源股份有限公司 | DCDC conversion circuit suitable for wide input voltage and vehicle-mounted charger |
| CN111665411A (en) * | 2020-07-01 | 2020-09-15 | 浙江大学 | Modular multifunctional MMC topology universal experimental platform and method thereof |
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| CN109671344A (en) * | 2018-12-28 | 2019-04-23 | 国家电网有限公司 | A kind of topological structure for direct current transmission and distribution constructional dynamic simulation experimental system |
| CN109671344B (en) * | 2018-12-28 | 2020-11-06 | 国家电网有限公司 | Topological structure for dynamic simulation experiment system of direct current power transmission and distribution project |
| CN111614267A (en) * | 2020-06-17 | 2020-09-01 | 深圳威迈斯新能源股份有限公司 | DCDC conversion circuit suitable for wide input voltage and vehicle-mounted charger |
| CN111665411A (en) * | 2020-07-01 | 2020-09-15 | 浙江大学 | Modular multifunctional MMC topology universal experimental platform and method thereof |
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