CN203788162U - Submodule capable of being assembled and three-phase modular multilevel converter (MMC) topology structure - Google Patents
Submodule capable of being assembled and three-phase modular multilevel converter (MMC) topology structure Download PDFInfo
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- CN203788162U CN203788162U CN201420043157.8U CN201420043157U CN203788162U CN 203788162 U CN203788162 U CN 203788162U CN 201420043157 U CN201420043157 U CN 201420043157U CN 203788162 U CN203788162 U CN 203788162U
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Abstract
The utility model provides a submodule capable of being assembled. The submodule capable of being assembled is formed by detachably assembling at least one of a standard half-bridge module, a standard protection module and a standard clamping module. The standard half-bridge module comprises an insulated gate bipolar transistor T1, a diode D1 in reverse parallel connection with the insulated gate bipolar transistor T1, an insulated gate bipolar transistor T2, a diode D2 in reverse parallel connection with the insulated gate bipolar transistor T2, and a capacitor C0. The standard protection module comprises a bypass switch K1 and a thyristor V1 which are connected in parallel, and the standard clamping module comprises an insulated gate bipolar transistor T0, a diode D0 in reverse parallel connection with the insulated gate bipolar transistor T0, a diode D3 of which the cathode is connected with a collector of the insulated gate bipolar transistor T0, and a diode D4 of which the anode is connected with an emitter of the insulated gate bipolar transistor T0. Correspondingly, the utility model provides a three-phase MMC topology structure comprising the submodule capable of being assembled, and the submodule capable of being assembled can be assembled freely.
Description
Technical field
The utility model relates to Technology of HVDC based Voltage Source Converter field, is specifically related to a kind of for forming the submodule assembled and the three-phase MMC topological structure of MMC topological structure.
Background technology
Converter valve is the nucleus equipment of DC transmission engineering, and its topological structure can be divided into two level topological structures, three level topological structures and MMC (Modular Multilevel Convertcr, i.e. modular multi-level converter) topological structure.
Wherein, MMC topological structure tool has the following advantages: 1) structure, submodule that parameter is identical, consist of, therefore reduced manufacture difficulty and cost, be more suitable for being applied to high voltage direct current (high voltage direct current, HVDC) transmission system; 2) for forming submodule simple in structure of MMC topological structure, operating state is few, so its control is relatively simple.Based on above-mentioned advantage, make MMC topological structure be widely used in DC transmission engineering.
Existingly for forming the submodule of MMC topological structure, mainly contain three kinds of H-MMC (half-bridge submodule), F-MMC (full-bridge submodule) and C-MMC (clamp Shuangzi module), these three kinds of submodules are all technology maturation and packaged standard module, in actual applications, directly these standard modules are assembled into the relevant position in topological structure.But, if certain submodule in topological structure need to be transformed to other submodule, or certain device in certain submodule goes wrong, employing be all direct Shift Method, when topological structure is comparatively complicated, this direct Shift Method has greatly increased production cost.
Utility model content
Technical problem to be solved in the utility model is for existing above-mentioned defect in prior art, provide a kind of can freely assemble for forming the submodule assembled and the three-phase MMC topological structure of MMC topological structure.
Solve the technical scheme that the utility model technical problem adopts:
The described submodule of assembling is for forming MMC topological structure, and its at least one in standard half-bridge module, standard protection module and standard clamp module removably assembles; Wherein, described standard half-bridge module comprise insulated gate bipolar transistor T1 and with diode D1, the insulated gate bipolar transistor T2 of its reverse parallel connection and with the diode D2 of its reverse parallel connection, with capacitor C 0, the collector electrode of insulated gate bipolar transistor T1 is connected with one end of capacitor C 0, the emitter of insulated gate bipolar transistor T1 is connected with the collector electrode of insulated gate bipolar transistor T2, and the emitter of insulated gate bipolar transistor T2 is connected with the other end of capacitor C 0; Described standard protection module comprises by-pass switch K1 in parallel and thyristor V1; Described standard clamp module comprise insulated gate bipolar transistor T0 and with the diode D0 of its reverse parallel connection, the diode D3 that negative electrode is connected with the collector electrode of insulated gate bipolar transistor T0, the diode D4 being connected with the emitter of insulated gate bipolar transistor T0 with anode.
Preferably, described standard half-bridge module also comprises independently power outlet terminal of four tunnels, the power outlet terminal A3 that be respectively the power outlet terminal A1 being connected with the emitter of insulated gate bipolar transistor T1, the power outlet terminal A2 being connected with the emitter of insulated gate bipolar transistor T2, is connected with one end of described capacitor C 0, the power outlet terminal A4 being connected with the other end with described capacitor C 0;
Described standard protection module also comprises independently power outlet terminal of four tunnels, the power outlet terminal B3 that be respectively the power outlet terminal B1 being connected with one end of by-pass switch K1, the power outlet terminal B2 being connected with the other end of by-pass switch K1, is connected with the negative electrode of thyristor V1, the power outlet terminal B4 being connected with anode with thyristor V1;
Described standard clamp module also comprises independently power outlet terminal of four tunnels, the power outlet terminal C3 that be respectively the power outlet terminal C1 being connected with the anode of diode D3, the power outlet terminal C2 being connected with the anode of diode D4, is connected with the negative electrode of diode D3, the power outlet terminal C4 being connected with negative electrode with diode D4;
The described submodule of assembling is removably assembled by the power outlet terminal of at least one module in standard half-bridge module, standard protection module and standard clamp module.
Preferably; the described submodule of assembling is removably assembled by a standard half-bridge module and a standard protection module; and the power outlet terminal B3 of described standard protection module is removably connected with the power outlet terminal A1 of standard half-bridge module, the power outlet terminal B4 of described standard protection module is removably connected with the power outlet terminal A2 of standard half-bridge module.
Preferably, the described submodule of assembling is removably assembled by two standard half-bridge modules, described two standard half-bridge modules are respectively the first standard half-bridge module and the second standard half-bridge module, and the power outlet terminal A3 of described the first standard half-bridge module is removably connected with the power outlet terminal A3 of the second standard half-bridge module, the power outlet terminal A4 of described the first standard half-bridge module is removably connected with the power outlet terminal A4 of the second standard half-bridge module.
Preferably, the described submodule of assembling is removably assembled by a standard clamp module and two standard half-bridge modules, described two standard half-bridge modules are respectively the first standard half-bridge module and the second standard half-bridge module, and the power outlet terminal A3 of described the first standard half-bridge module is removably connected with the power outlet terminal C1 of standard clamp module, the power outlet terminal A4 of described the first standard half-bridge module is removably connected with the power outlet terminal C2 of standard clamp module, the power outlet terminal C3 of described standard clamp module is removably connected with the power outlet terminal A3 of the second standard half-bridge module, the power outlet terminal C4 of described standard clamp module is removably connected with the power outlet terminal A4 of the second standard half-bridge module.
The utility model also provides a kind of three-phase MMC topological structure, comprise three facies units, each facies unit includes brachium pontis and lower brachium pontis, and the upper brachium pontis of each facies unit and lower brachium pontis include reactor and a plurality of submodule of series connection successively, and described submodule adopts the above-mentioned submodule of assembling.
Beneficial effect:
1) submodule of assembling described in the utility model can freely assemble according to actual demand, that is to say, the submodule that needs which kind of type in MMC topological structure, at least one that all can be in standard half-bridge module, standard protection module and standard clamp module (i.e. three kinds of standard modules) removably assembles, be convenient to carry out the topology combination of various structures, be convenient to building of system experimental platform, to the cost control of MMC topological structure, adjustment and installation, systematization dilatation, and the experimental verification of flexible DC power transmission has very large facilitation; And, for the occasion to the conventional overhead transmission line of employing by MMC application, also significant;
2) than direct Shift Method of the prior art, adopt in the topological structure of assembling submodule described in the utility model, when certain submodule need to be transformed to other submodule, only need will in the submodule before conversion, dismantle from standard modules (being standard half-bridge module, standard protection module or standard clamp module) different in submodule after conversion, and install the standard module needing; When certain device in certain submodule goes wrong, only need this device place standard module to dismantle, and install new standard module, therefore, greatly saved the production cost of MMC topological structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1 Plays half-bridge module;
Fig. 2 is the structural representation of the utility model embodiment 1 Plays protection module;
Fig. 3 is the structural representation of the utility model embodiment 1 Plays clamp module;
Fig. 4 is the structural representation of the half-bridge submodule that removably assembled by a standard half-bridge module and standard protection module in the utility model embodiment 2;
Fig. 5 is the structural representation of the full-bridge submodule that removably assembled by two standard half-bridge modules in the utility model embodiment 3;
Fig. 6 is the structural representation of the clamp Shuangzi module that removably assembled by a standard clamp module and two standard half-bridge modules in the utility model embodiment 4;
Fig. 7 is the schematic diagram of three-phase MMC topological structure in the utility model embodiment 5.
Embodiment
For making those skilled in the art understand better the technical solution of the utility model, below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment 1:
It is a kind of for forming the submodule assembled of MMC topological structure that the present embodiment provides; at least one in standard half-bridge module (as shown in Figure 1), standard protection module (as shown in Figure 2) and standard clamp module (as shown in Figure 3) removably assembles, for example, by existing connector, realize removably assembling.
Wherein, described standard half-bridge module comprises insulated gate bipolar transistor (IGBT, Insulated Gate Bipolar Transistor) T1 and with diode D1, the insulated gate bipolar transistor T2 of its reverse parallel connection and with the diode D2 of its reverse parallel connection, with capacitor C 0, the collector electrode of insulated gate bipolar transistor T1 is connected with one end of capacitor C 0, the emitter of insulated gate bipolar transistor T1 is connected with the collector electrode of insulated gate bipolar transistor T2, and the emitter of insulated gate bipolar transistor T2 is connected with the other end of capacitor C 0; Described standard protection module comprises by-pass switch K1 in parallel and thyristor V1; Described standard clamp module comprise insulated gate bipolar transistor T0 and with the diode D0 of its reverse parallel connection, the diode D3 that negative electrode is connected with the collector electrode of insulated gate bipolar transistor T0, the diode D4 being connected with the emitter of insulated gate bipolar transistor T0 with anode.
Particularly, as shown in Figure 1, described standard half-bridge module also comprises independently power outlet terminal of four tunnels, the power outlet terminal A3 that be respectively the power outlet terminal A1 being connected with the emitter of insulated gate bipolar transistor T1, the power outlet terminal A2 being connected with the emitter of insulated gate bipolar transistor T2, is connected with one end of described capacitor C 0, the power outlet terminal A4 being connected with the other end with described capacitor C 0.Described standard half-bridge module also comprises the intelligent power taking plate of high voltage, wide region and controls veneer, described power taking plate is for providing power supply to described control veneer, described control veneer relates to pwm pulse modulation, standard half-bridge submodule fault reports, and the voltage acquisition of capacitor C 0 and control, choosing of the capacity of capacitor C 0 and electric pressure, can be according to system parameters adjustment.
As shown in Figure 2; described standard protection module also comprises independently power outlet terminal of four tunnels; the power outlet terminal B3 that be respectively the power outlet terminal B1 being connected with one end of by-pass switch K1, the power outlet terminal B2 being connected with the other end of by-pass switch K1, is connected with the negative electrode of thyristor V1, the power outlet terminal B4 being connected with anode with thyristor V1.Described standard protection module also comprises control veneer; the power supply of described control veneer derives from the power taking plate of the standard half-bridge module being removably connected with it; described control veneer relates to the control of the triggering control box by-pass switch K1 of thyristor V1, and and the control signal of the control veneer of other standard module mutual.
As shown in Figure 3, described standard clamp module also comprises independently power outlet terminal of four tunnels, the power outlet terminal C3 that be respectively the power outlet terminal C1 being connected with the anode of diode D3, the power outlet terminal C2 being connected with the anode of diode D4, is connected with the negative electrode of diode D3, the power outlet terminal C4 being connected with negative electrode with diode D4.Described standard clamp module also comprises control veneer, the power supply of described control veneer derives from the power taking plate of the standard half-bridge module being removably connected with it, described control veneer relates to the control signal of insulated gate bipolar transistor T0 and reporting of fault-signal, and and the control signal of the control veneer of other standard module mutual.
Therefore, the described submodule of assembling is removably assembled by the power outlet terminal of at least one module in standard half-bridge module, standard protection module and standard clamp module.
Visible; described in the present embodiment, can assemble submodule according to the actual requirements at least one in three kinds of standard modules (being standard half-bridge module, standard protection module or standard clamp module) freely assemble; simple in structure; application is convenient, thereby is conducive to cost control, adjustment and installation and the systematization dilatation of MMC topological structure.
Embodiment 2:
The present embodiment provides a kind of submodule of assembling; by a standard half-bridge module and a standard protection module, removably assembled; and the power outlet terminal B3 of described standard protection module is removably connected with the power outlet terminal A1 of standard half-bridge module; the power outlet terminal B4 of described standard protection module is removably connected with the power outlet terminal A2 of standard half-bridge module, thereby forms half-bridge submodule (H-MMC) as shown in Figure 4.Terminal 1 wherein and terminal 2 are respectively lead-out terminal and the input terminal of the submodule of half-bridge shown in Fig. 4.
Described thyristor V1 is the electric current through the diode D2 with insulated gate bipolar transistor T2 reverse parallel connection for by-pass under insulated gate bipolar transistor T2 is short-circuited failure condition; protection is unlikely to damage with the diode D2 of insulated gate bipolar transistor T2 reverse parallel connection; by-pass switch K1 is for being excised in the situation that half-bridge submodule breaks down, thus the reliably working of the system of assurance
Other structures in the present embodiment and effect are all identical with embodiment 1, repeat no more here.
Embodiment 3:
The present embodiment provides a kind of submodule of assembling, by two standard half-bridge modules, removably assembled, described two standard half-bridge modules are respectively the first standard half-bridge module and the second standard half-bridge module, and the power outlet terminal A3 of described the first standard half-bridge module is removably connected with the power outlet terminal A3 of the second standard half-bridge module, the power outlet terminal A4 of described the first standard half-bridge module is removably connected with the power outlet terminal A4 of the second standard half-bridge module, thereby forms full-bridge submodule (F-MMC) as shown in Figure 5.Terminal 1 wherein and terminal 2 are respectively lead-out terminal and the input terminal of the submodule of full-bridge shown in Fig. 5.
Other structures in the present embodiment and effect are all identical with embodiment 1, repeat no more here.
Embodiment 4:
The present embodiment provides a kind of submodule of assembling, by a standard clamp module and two standard half-bridge modules, removably assembled, described two standard half-bridge modules are respectively the first standard half-bridge module and the second standard half-bridge module, and the power outlet terminal A3 of described the first standard half-bridge module is removably connected with the power outlet terminal C1 of standard clamp module, the power outlet terminal A4 of described the first standard half-bridge module is removably connected with the power outlet terminal C2 of standard clamp module, the power outlet terminal C3 of described standard clamp module is removably connected with the power outlet terminal A3 of the second standard half-bridge module, the power outlet terminal C4 of described standard clamp module is removably connected with the power outlet terminal A4 of the second standard half-bridge module, thereby form clamp Shuangzi module (C-MMC) as shown in Figure 6.Terminal 1 wherein and terminal 2 are respectively lead-out terminal and the input terminal of the Shuangzi of clamp shown in Fig. 6 module.
The power supply of the control veneer of a described standard clamp module and two standard half-bridge modules is by mutual power cable, the power taking plate of any in shared described two standard half-bridge modules, and the control signal of the control veneer of three standard modules is used alternately by signal connecting line.
Other structures in the present embodiment and effect are all identical with embodiment 1, repeat no more here.
Embodiment 5:
As shown in Figure 7, the present embodiment provides a kind of three-phase MMC topological structure, comprise three facies units, be A facies unit, B facies unit and the C facies unit in Fig. 7, each facies unit includes brachium pontis and lower brachium pontis, the upper brachium pontis of each facies unit and lower brachium pontis include reactor L and a plurality of submodule of series connection successively, and described submodule adopts, and in embodiment 2~4, any can assemble submodule.
Be understandable that, above execution mode is only used to principle of the present utility model is described and the illustrative embodiments that adopts, yet the utility model is not limited to this.For those skilled in the art, in the situation that not departing from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement are also considered as protection range of the present utility model.
Claims (6)
1. can assemble a submodule, it,, for forming MMC topological structure, is characterized in that, described at least one in standard half-bridge module, standard protection module and standard clamp module of submodule of assembling removably assembles; Wherein, described standard half-bridge module comprise insulated gate bipolar transistor T1 and with diode D1, the insulated gate bipolar transistor T2 of its reverse parallel connection and with the diode D2 of its reverse parallel connection, with capacitor C 0, the collector electrode of insulated gate bipolar transistor T1 is connected with one end of capacitor C 0, the emitter of insulated gate bipolar transistor T1 is connected with the collector electrode of insulated gate bipolar transistor T2, and the emitter of insulated gate bipolar transistor T2 is connected with the other end of capacitor C 0; Described standard protection module comprises by-pass switch K1 in parallel and thyristor V1; Described standard clamp module comprise insulated gate bipolar transistor T0 and with the diode D0 of its reverse parallel connection, the diode D3 that negative electrode is connected with the collector electrode of insulated gate bipolar transistor T0, the diode D4 being connected with the emitter of insulated gate bipolar transistor T0 with anode.
2. the submodule of assembling according to claim 1, is characterized in that,
Described standard half-bridge module also comprises independently power outlet terminal of four tunnels, the power outlet terminal A3 that be respectively the power outlet terminal A1 being connected with the emitter of insulated gate bipolar transistor T1, the power outlet terminal A2 being connected with the emitter of insulated gate bipolar transistor T2, is connected with one end of described capacitor C 0, the power outlet terminal A4 being connected with the other end with described capacitor C 0;
Described standard protection module also comprises independently power outlet terminal of four tunnels, the power outlet terminal B3 that be respectively the power outlet terminal B1 being connected with one end of by-pass switch K1, the power outlet terminal B2 being connected with the other end of by-pass switch K1, is connected with the negative electrode of thyristor V1, the power outlet terminal B4 being connected with anode with thyristor V1;
Described standard clamp module also comprises independently power outlet terminal of four tunnels, the power outlet terminal C3 that be respectively the power outlet terminal C1 being connected with the anode of diode D3, the power outlet terminal C2 being connected with the anode of diode D4, is connected with the negative electrode of diode D3, the power outlet terminal C4 being connected with negative electrode with diode D4;
The described submodule of assembling is removably assembled by the power outlet terminal of at least one module in standard half-bridge module, standard protection module and standard clamp module.
3. the submodule of assembling according to claim 2; it is characterized in that; the described submodule of assembling is removably assembled by a standard half-bridge module and a standard protection module; and the power outlet terminal B3 of described standard protection module is removably connected with the power outlet terminal A1 of standard half-bridge module, the power outlet terminal B4 of described standard protection module is removably connected with the power outlet terminal A2 of standard half-bridge module.
4. the submodule of assembling according to claim 2, it is characterized in that, the described submodule of assembling is removably assembled by two standard half-bridge modules, described two standard half-bridge modules are respectively the first standard half-bridge module and the second standard half-bridge module, and the power outlet terminal A3 of described the first standard half-bridge module is removably connected with the power outlet terminal A3 of the second standard half-bridge module, the power outlet terminal A4 of described the first standard half-bridge module is removably connected with the power outlet terminal A4 of the second standard half-bridge module.
5. the submodule of assembling according to claim 2, it is characterized in that, the described submodule of assembling is removably assembled by a standard clamp module and two standard half-bridge modules, described two standard half-bridge modules are respectively the first standard half-bridge module and the second standard half-bridge module, and the power outlet terminal A3 of described the first standard half-bridge module is removably connected with the power outlet terminal C1 of standard clamp module, the power outlet terminal A4 of described the first standard half-bridge module is removably connected with the power outlet terminal C2 of standard clamp module, the power outlet terminal C3 of described standard clamp module is removably connected with the power outlet terminal A3 of the second standard half-bridge module, the power outlet terminal C4 of described standard clamp module is removably connected with the power outlet terminal A4 of the second standard half-bridge module.
6. a three-phase MMC topological structure, comprise three facies units, each facies unit includes brachium pontis and lower brachium pontis, the upper brachium pontis of each facies unit and lower brachium pontis include reactor and a plurality of submodule of series connection successively, it is characterized in that, described submodule adopts the submodule assembled described in any one in claim 1~5.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105186550A (en) * | 2015-08-19 | 2015-12-23 | 东南大学 | Improved modularized multi-level converter submodule topology |
CN105245109A (en) * | 2015-11-05 | 2016-01-13 | 许继电气股份有限公司 | Clamp double submodule energy acquiring power supply device and energy acquiring control method |
CN105703388A (en) * | 2014-08-25 | 2016-06-22 | 特变电工新疆新能源股份有限公司 | Photovoltaic grid-connected power generation system based on middle and high voltage direct current access |
CN107947611A (en) * | 2016-10-12 | 2018-04-20 | 特变电工新疆新能源股份有限公司 | A kind of MMC module topology structures applied to flexible direct current power transmission system |
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2014
- 2014-01-20 CN CN201420043157.8U patent/CN203788162U/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105703388A (en) * | 2014-08-25 | 2016-06-22 | 特变电工新疆新能源股份有限公司 | Photovoltaic grid-connected power generation system based on middle and high voltage direct current access |
CN105703388B (en) * | 2014-08-25 | 2019-06-25 | 特变电工新疆新能源股份有限公司 | A kind of grid-connected photovoltaic system based on the access of mesohigh direct current |
CN105186550A (en) * | 2015-08-19 | 2015-12-23 | 东南大学 | Improved modularized multi-level converter submodule topology |
CN105245109A (en) * | 2015-11-05 | 2016-01-13 | 许继电气股份有限公司 | Clamp double submodule energy acquiring power supply device and energy acquiring control method |
CN107947611A (en) * | 2016-10-12 | 2018-04-20 | 特变电工新疆新能源股份有限公司 | A kind of MMC module topology structures applied to flexible direct current power transmission system |
CN107947611B (en) * | 2016-10-12 | 2019-12-17 | 特变电工新疆新能源股份有限公司 | MMC module topological structure applied to flexible direct-current power transmission system |
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