CN111541392A - Medium voltage converter three-level power module topology module and device - Google Patents

Medium voltage converter three-level power module topology module and device Download PDF

Info

Publication number
CN111541392A
CN111541392A CN202010207811.4A CN202010207811A CN111541392A CN 111541392 A CN111541392 A CN 111541392A CN 202010207811 A CN202010207811 A CN 202010207811A CN 111541392 A CN111541392 A CN 111541392A
Authority
CN
China
Prior art keywords
water
clamping
topology
level
power module
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.)
Pending
Application number
CN202010207811.4A
Other languages
Chinese (zh)
Inventor
杨飞
毛江
雷肖
张斯翔
过亮
周敏
于彬
王�琦
罗维
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Three Gorges Corp
Nari Technology Co Ltd
Original Assignee
China Three Gorges Corp
Nari Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Three Gorges Corp, Nari Technology Co Ltd filed Critical China Three Gorges Corp
Priority to CN202010207811.4A priority Critical patent/CN111541392A/en
Publication of CN111541392A publication Critical patent/CN111541392A/en
Pending legal-status Critical Current

Links

Images

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
    • 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
    • H02M7/487—Neutral point clamped inverters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
    • H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
    • 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
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Inverter Devices (AREA)

Abstract

The invention discloses a medium-voltage converter three-level power module topology module and a device, which comprise a diode-clamped three-level topology structure, wherein the diode-clamped three-level topology structure comprises two absorption capacitors Cs1 and Cs2, four power switch tubes T1-T4, two clamping diodes D5 and D6, and a clamping resistor is added between two clamping points in the diode-clamped three-level topology structure. The advantages are that: the invention has the advantages of advanced electrical topology, reasonable device type selection, compact mechanical structure, stability and reliability, and the overall performance of the invention is at the domestic advanced level.

Description

Medium voltage converter three-level power module topology module and device
Technical Field
The invention relates to a medium-voltage converter three-level power module topology module and a device, and belongs to the technical field of medium-voltage converter systems.
Background
In recent years, due to the restriction of various land resources, the development of wind power begins to develop to the sea with better wind resources, and the sea wind power has rapidly developed in the world. In order to adapt to the development of offshore wind power, all international large-fan manufacturing companies have introduced 5MW and above-grade fan water-cooled converters on the basis of respective fans. The medium-voltage converter serving as a key device for connecting wind power into a power system is an optimal technical scheme, and the mainstream of the future offshore wind power converter market is certainly a medium-voltage full-power large-capacity converter.
Due to the high technical threshold and the high capital threshold, the medium-voltage current transformer of the offshore wind turbine generator set built and built in China currently adopts ABB and GE imported products, is still in the prototype stage in China, and is one of the key electrical components with low localization rate. The power level of the whole machine is more than 3MW, 3.6MW and 4MW, and more than 5MW is in a prototype stage and is not in batch. Basically, the scheme is a 690V low-voltage scheme in China, and a 3300V medium-voltage class medium-voltage converter is still in a pre-research stage.
Disclosure of Invention
The invention aims to provide a three-level power module topology module and a device of a medium voltage converter aiming at the technical requirement of a 3300V medium voltage converter.
In order to solve the technical problem, the invention provides a medium-voltage converter three-level power module topology module which comprises a diode-clamped three-level topology structure, wherein the diode-clamped three-level topology structure comprises two absorption capacitors Cs1 and Cs2, four power switch tubes T1-T4, two clamping diodes D5 and D6, and a clamping resistor is added between two clamping points in the diode-clamped three-level topology structure.
Further: the clamping resistor is connected in parallel with two clamping diodes which are connected in series in the diode clamping type three-level topological structure.
Further: the power switch tube is a crimping type IGBT power module or a crimping type IEGT power module.
A medium voltage converter tri-level power module topology arrangement comprising a housing and a medium voltage converter tri-level power module topology module according to any of claims 1-3, said medium voltage converter tri-level power module topology module being provided in said housing.
Further: the device also comprises a neutral point copper bar, an AC copper bar, a laminated bus bar, eight water-cooled radiators, a third water-cooled radiator, a first direct current support capacitor and a second direct current support capacitor;
the power switch tube T1 is in pressure joint between the first water-cooled radiator and the second water-cooled radiator, the power switch tube T2 is in pressure joint between the second water-cooled radiator and the third water-cooled radiator, the power switch tube T3 is in pressure joint between the sixth water-cooled radiator and the seventh water-cooled radiator, and the power switch tube T4 is in pressure joint between the seventh water-cooled radiator and the eighth water-cooled radiator;
the clamping diode D5 is in pressure joint between the fourth water-cooled radiator and the neutral point copper bar, and the clamping diode D6 is in pressure joint between the fifth water-cooled radiator and the neutral point copper bar;
the third water-cooled radiator and the sixth water-cooled radiator are connected to the AC copper bar through a wiring copper bar;
the neutral point copper bar is connected to the laminated busbar, the first water-cooling radiator is connected to the laminated busbar through a first output copper bar, the eighth water-cooling radiator is connected to the laminated busbar through a second output copper bar, the laminated busbar outputs the neutral point through the first busbar, outputs the + DC through the second busbar and outputs the-DC through the third busbar;
the second direct current supports the electric capacity and connects on the female row of range upon range of row through first terminal and second terminal, and same first support electric capacity passes through the terminal connection on the female row of range upon range of, and absorption electric capacity Cs1 and absorption electric capacity Cs2 pass through the cable connection on the female row of range upon range of, and the clamp resistance passes through the cable connection on the female row of range upon range of.
Further: the AC copper bar collects AC current through the Hall current sensor.
Further: the power switch tube, the clamping diode and the water-cooling radiator are fixed in the mechanical frame through fasteners.
The invention achieves the following beneficial effects:
the invention has the advantages of advanced electrical topology, reasonable device type selection, compact mechanical structure, stability and reliability, and the overall performance of the invention is at the domestic advanced level.
Drawings
Fig. 1 is a circuit schematic diagram of a three-level power module topology module of the medium voltage converter of the present invention;
FIG. 2 is a topology diagram of an absorption capacitor tri-level half-bridge arm of the tri-level power module topology and apparatus of the present invention;
FIG. 3 is a clamp resistor topology diagram of a three-level power module topology and apparatus of the present invention;
FIG. 4 is a state topology diagram of a clamp diode "0" of the three-level power module topology and apparatus of the present invention;
FIG. 5 is a perspective front view of a three-level power module topology and apparatus of the present invention;
FIG. 6 is a perspective rear view of a three-level power module topology and apparatus of the present invention;
fig. 7 is a perspective view of a crimping mechanism of the three-level power module topology and device of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Hair brushThe electric topology adopts a double-bridge back diode clamping three-level topological structure and comprises an IGBT/IEGT power module, a clamping diode, a direct current supporting capacitor, an absorption capacitor, a clamping resistor and the like. The direct-current voltage 2600V in the double-bridge back electrical topology is according to a formula Um＝(k1UMax+Usp)·k2The rated voltage of the pressure-welding type IEGT power module is calculated to be 4032V. Wherein k is1-an overvoltage coefficient; k is a radical of2-a safety factor; u shapeMax-a dc voltage maximum; u shapesp-switching off the spike overvoltage. Get k1Is 1.1, k2Is 1.2, UspIs 500V. According to technical parameters provided by a power module manufacturer, when the switching frequency is 750HZ, the Zema T1800GB45A type IGBT meets the design requirements of a system.
As shown in fig. 1, a specific circuit of an electrical topology structure of a medium voltage converter three-level power module is as follows:
the three-level topological structure comprises a plurality of parallel double-bridge back diode clamping structures and two direct-current supporting capacitors C1 and C2;
the double-bridge back diode clamping three-level topological structure comprises two absorption capacitors Cs1, Cs2, a clamping resistor R1, four power switch tubes T1-T4, two clamping diodes D5 and D6. Four freewheeling diodes D1-D4;
the collector of the power switch tube T1 is respectively connected with one end of an absorption capacitor Cs1, one end of a direct current support capacitor C1, a first level output end and the negative electrode of a fly-wheel diode D1;
an emitter of the power switch tube T1 is respectively connected with a collector of the power switch tube T2, one end of a clamping resistor R1, the cathode of a clamping diode D5, the anode of a freewheeling diode D1 and the cathode of a freewheeling diode D2;
the emitter of the power switch tube T2 is respectively connected with the anode of the current diode D2, the collector of the power switch tube T3, the cathode of the fly-wheel diode D3 and the alternating current input end;
the emitter of the power switch tube T3 is respectively connected with the anode of a clamping diode D6, the other end of a clamping resistor R1, the collector of the power switch tube T4, the anode of a freewheeling diode D3 and the cathode of a freewheeling diode D4;
the emitter of the power switch tube T3 is respectively connected with the anode of the current diode D4, one end of the absorption capacitor Cs2, one end of the current support capacitor C2 and a second level output end;
the other end of the direct current supporting capacitor C1 is connected with a third level output end (NP), the other end of the direct current supporting capacitor C2, the other end of the absorption capacitor Cs1, the other end of the absorption capacitor Cs2, the anode of the clamping diode D5 and the cathode of the clamping diode D6.
As shown in fig. 2 to 4, the topology design diagrams of the absorption capacitor tri-level half-bridge arm, the clamp resistor topology design diagram, and the clamp diode "0" state topology design diagram correspond to each other.
The absorption capacitor is directly connected in parallel at two ends of the IGBT, and the method has the advantages of simple circuit structure, low cost and reliable application, and is shown in figure 2. According to the formula:
Figure RE-GDA0002564651940000041
wherein L issParasitic inductance of the absorption circuit; l isPIs a DC bus stray inductance; l isCIs a parasitic inductance of a direct current capacitor; i.e. i0Is the working current; delta UP2Is the peak voltage; csIs the capacitance value of the absorption capacitor.
Wherein (L)C+LP+Ls) Referring to a double-pulse simulation report of a Xima IGBT manufacturer, taking a minimum value of 300Nh, i0Is composed of
Figure RE-GDA0002564651940000042
ΔUP2Obtaining C by taking 1000VsThe value is more than or equal to 1.86 muF, 2 muF is taken, a clamping resistor is added between two clamping points shown in figure 3, and the one-way clamping effect of the diode is compensated through a path provided by the clamping resistor. Theoretically, the larger the clamping resistance value is, the better the clamping effect is, but when the voltage is constant, the resistance is large, and the heat is also serious, and it is considered that the auxiliary clamping resistance is 20k omega.
The clamping diode "0" state topology is shown in fig. 4. For the diode-clamped three-level topology, 4 main pipes of each bridge arm oil are connected in series, and each phase is formed by connecting 2 clamping diodes in anti-parallel and in the middle of an upper bridge arm and a lower bridge arm. According to the three-level working principle, each bridge arm has three switching states of positive, negative and zero, and two current flowing modes of flowing in and flowing out exist in each switching state according to the direction of load current. In the invention, a clamping diode of a Simma E2400EC45E type is selected, the reverse peak voltage is 4500V, and the forward current is 2400A.
Please further refer to fig. 5 to 7, which are respectively corresponding to a front perspective view, a back perspective view and a crimping mechanical device of a three-level power module topology and device.
Fig. 5-6 illustrate electrical connections for a three-level power module topology. The crimping type IGBT/IEGT power module 1 is crimped between the water-cooled radiators 10 and 11, the IGBT/IEGT power module 2 is crimped between the water-cooled radiators 11 and 12, the IGBT/IEGT power module 3 is crimped between the water-cooled radiators 15 and 16, and the IGBT/IEGT power module 4 is crimped between the water-cooled radiators 16 and 17; the clamping diode 5 is in pressure joint between the water-cooling radiator 13 and the neutral point copper bar 21, and the clamping diode 6 is in pressure joint between the water-cooling radiator 14 and the neutral point copper bar 21. The water-cooled radiators 12 and 15 are connected to the module AC copper bar 7 through copper bars, and the AC copper bar 19 collects AC current through the current sampling Hall 18. The neutral point copper bar 21 is connected on the laminated busbar 9, the water-cooling radiator 1 is connected on the laminated busbar 9 through the + DC copper bar 22, the water-cooling radiator 4 is connected on the laminated busbar 9 through the-DC copper bar 23, the laminated busbar 9 outputs the neutral point through 92, outputs the + DC through 91 and outputs the-DC through 93. The dc support capacitor 8 is connected to the laminated busbar 9 via the terminals 81 and 82, the support capacitor 7 is connected to the laminated busbar 9 via the terminals, the absorption capacitors 24 and 25 are connected to the laminated busbar 9 via cables, and the clamp resistor 20 is connected to the laminated busbar 9 via the cables.
Fig. 7 shows a three-level power module topology crimping mechanism. The crimping type IGBT/ IEGT power module 1, 2, 3, 4, the clamping diodes 5, 6, the water cooling radiators 10, 11, 12, 13, 14, 15, 16, 17 are limited in position by a mechanical frame 26 and fixing bolts 27, 28, 29, and 20MP pre-tightening force is provided by disc-shaped gaskets 30, 31 and fastening nuts 32, 33. The crimping mechanical device forms the three-level power module into an organic whole, and the structure is compact, reliable and stable.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (7)

1. A medium-voltage converter three-level power module topology module comprises a diode-clamped three-level topology structure, wherein the diode-clamped three-level topology structure comprises two absorption capacitors Cs1 and Cs2, four power switch tubes T1-T4, two clamping diodes D5 and D6, and the topology module is characterized in that: and adding a clamping resistor between two clamping points in the diode clamping type three-level topological structure.
2. The medium voltage converter three-level power module topology module of claim 1, characterized in that: the clamping resistor is connected in parallel with two clamping diodes which are connected in series in the diode clamping type three-level topological structure.
3. The medium voltage converter three-level power module topology module of claim 1, characterized in that: the power switch tube is a crimping type IGBT power module or a crimping type IEGT power module.
4. A medium voltage converter three-level power module topology device is characterized in that: a medium voltage converter tri-level power module topology module as claimed in any of claims 1-3 comprising a housing and said medium voltage converter tri-level power module topology module being provided in said housing.
5. The medium voltage converter three-level power module topology arrangement according to claim 4, characterized in that: the water-cooled heat sink further comprises a neutral point copper bar (21), an AC copper bar (19), a laminated bus bar (9), eight water-cooled heat sinks (10-17), a third water-cooled heat sink (11), a first direct current supporting capacitor (7) and a second direct current supporting capacitor (8);
the power switch tube T1 (1) is in pressure joint between the first water-cooled radiator (10) and the second water-cooled radiator (11), the power switch tube T2 (2) is in pressure joint between the second water-cooled radiator (11) and the third water-cooled radiator (12), the power switch tube T3 (3) is in pressure joint between the sixth water-cooled radiator (15) and the seventh water-cooled radiator (16), and the power switch tube T4 (4) is in pressure joint between the seventh water-cooled radiator (16) and the eighth water-cooled radiator (17);
the clamping diode D5(5) is in compression joint between the fourth water-cooled radiator (13) and the neutral point copper bar (21), and the clamping diode D6(6) is in compression joint between the fifth water-cooled radiator (14) and the neutral point copper bar (21);
the third water-cooled radiator (12) and the sixth water-cooled radiator (15) are connected on an AC copper bar (19) through a wiring copper bar;
a neutral point copper bar (21) is connected to the laminated busbar (9), a first water-cooling radiator (10) is connected to the laminated busbar (9) through a first output copper bar (22), an eighth water-cooling radiator (17) is connected to the laminated busbar (9) through a second output copper bar (23), the laminated busbar (9) outputs a neutral point through a first busbar (92), outputs + DC through a second busbar (91) and outputs-DC through a third busbar (93);
the second direct current supporting capacitor (8) is connected to the laminated busbar (9) through a first terminal (81) and a second terminal (82), the first supporting capacitor (7) is connected to the laminated busbar (9) through a terminal, the absorbing capacitor Cs1(24) and the absorbing capacitor Cs2(25) are connected to the laminated busbar (9) through a cable, and the clamping resistor (20) is connected to the laminated busbar (9) through a cable.
6. The medium voltage converter three-level power module topology arrangement according to claim 5, characterized in that: the AC copper bar (19) collects AC current through the Hall current sensor (18).
7. The medium voltage converter three-level power module topology arrangement according to claim 5, characterized in that: the power switch tube (1-4), the clamping diodes (5, 6) and the water-cooling radiator (10-17) are fixed in a mechanical frame (26) through fasteners.
CN202010207811.4A 2020-03-23 2020-03-23 Medium voltage converter three-level power module topology module and device Pending CN111541392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010207811.4A CN111541392A (en) 2020-03-23 2020-03-23 Medium voltage converter three-level power module topology module and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010207811.4A CN111541392A (en) 2020-03-23 2020-03-23 Medium voltage converter three-level power module topology module and device

Publications (1)

Publication Number Publication Date
CN111541392A true CN111541392A (en) 2020-08-14

Family

ID=71975014

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010207811.4A Pending CN111541392A (en) 2020-03-23 2020-03-23 Medium voltage converter three-level power module topology module and device

Country Status (1)

Country Link
CN (1) CN111541392A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112928073A (en) * 2021-04-20 2021-06-08 沈阳益峰电器有限责任公司 IGBT power module device and manufacturing method
WO2022063921A1 (en) * 2020-09-28 2022-03-31 Institut Polytechnique De Grenoble Power electronics system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104953857A (en) * 2015-06-18 2015-09-30 国电南瑞科技股份有限公司 Power unit of IEGT (Injection Enhanced Gate Transistor)-based high-power tri-level converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104953857A (en) * 2015-06-18 2015-09-30 国电南瑞科技股份有限公司 Power unit of IEGT (Injection Enhanced Gate Transistor)-based high-power tri-level converter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022063921A1 (en) * 2020-09-28 2022-03-31 Institut Polytechnique De Grenoble Power electronics system
FR3114725A1 (en) * 2020-09-28 2022-04-01 Institut Polytechnique De Grenoble Power electronic system
CN112928073A (en) * 2021-04-20 2021-06-08 沈阳益峰电器有限责任公司 IGBT power module device and manufacturing method

Similar Documents

Publication Publication Date Title
CA2582186C (en) Three level power converting apparatus
CN102044985B (en) Phase module for three-level integrated gate-commutated thyristor frequency converter
CN201616760U (en) Water-cooled power module of three-phase diode-clamped three-level inverter
CN102763316A (en) Single phase multilevel inverter
CA2818149C (en) Power converter and method of assembling the same
CN102957326A (en) Modularized structure for three-level inverter for wind power generation
CN111541392A (en) Medium voltage converter three-level power module topology module and device
CN210201727U (en) Integrated power module, converter device and wind power generation system
CN106664029B (en) The assemble method of power converter and power converter
CN113726136B (en) conversion device
JP5678597B2 (en) Main circuit structure of power converter
CN108768195B (en) Power circuit, power module and converter
CN107911033B (en) Design method for optimizing total stray inductance of main circuit and locomotive variable-current power unit
CN206023592U (en) The tri- level power units of compression joint type IGBT that a kind of new use heat-pipe radiator radiates
CN114079389A (en) Converter module and main structure thereof
Alili et al. Power Electronic Converters Review for Wind Turbine Applications: State of Art, Reliability and Trends
CN202713172U (en) Power module of wind power converter
CN202949366U (en) Modular structure of three-level converter for wind power generation
CN113726137A (en) Conversion device
CN221177562U (en) Power module using neutral point clamped type three-level unit
CN216672612U (en) Three-level grid-connected circuit structure
CN213151921U (en) Crowbar circuit, device and motor
CN213426036U (en) Inverter topology circuit and single-phase inverter
CN112769344B (en) Nine-level converter
CN217956950U (en) Power semiconductor parallel circuit of converter and three-phase NPC-I type three-level converter

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
RJ01 Rejection of invention patent application after publication

Application publication date: 20200814

RJ01 Rejection of invention patent application after publication