WO2019037096A1 - 一种实现绕组并联控制的大功率电机 - Google Patents

一种实现绕组并联控制的大功率电机 Download PDF

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Publication number
WO2019037096A1
WO2019037096A1 PCT/CN2017/099089 CN2017099089W WO2019037096A1 WO 2019037096 A1 WO2019037096 A1 WO 2019037096A1 CN 2017099089 W CN2017099089 W CN 2017099089W WO 2019037096 A1 WO2019037096 A1 WO 2019037096A1
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WO
WIPO (PCT)
Prior art keywords
phase
winding
power device
sub
power
Prior art date
Application number
PCT/CN2017/099089
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English (en)
French (fr)
Inventor
殷天明
王艳
Original Assignee
毕节添钰动力科技股份有限公司
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Application filed by 毕节添钰动力科技股份有限公司 filed Critical 毕节添钰动力科技股份有限公司
Priority to PCT/CN2017/099089 priority Critical patent/WO2019037096A1/zh
Publication of WO2019037096A1 publication Critical patent/WO2019037096A1/zh
Priority to US16/731,062 priority patent/US11251671B2/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/12—Asynchronous induction motors for multi-phase current
    • H02K17/14—Asynchronous induction motors for multi-phase current having windings arranged for permitting pole-changing
    • 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
    • H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/5388—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with asymmetrical configuration of switches
    • 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
    • H02M1/008—Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators
    • 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
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/0085—Partially controlled bridges
    • 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
    • H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration

Definitions

  • the invention relates to the technical field of electric motors, in particular to a high-power motor for realizing parallel control of windings.
  • each phase winding of the motor consists of two independent power devices and one independent phase winding. After the current flows in through the E point, the conduction or not control of each phase of the motor is realized by controlling the power device.
  • high-power devices are required, and high-power devices are often difficult to find and expensive due to the small number of types.
  • each phase winding of the motor consists of 2n independent power devices and 1 independent phase winding.
  • the current flows from the E point, it will be shunted by n pairs of independent power devices to control the high power motor with a small power device.
  • the solution needs to solve the technical problem of current sharing.
  • the technical problem to be solved by the present invention is to provide a high-power motor that realizes parallel control of windings to solve the above problems.
  • a technical solution adopted by the present invention is to provide a high-power motor that realizes parallel control of windings, which comprises a multi-phase winding, and each phase of the winding is composed of n winding branches and 2n power devices. Wherein the n winding branches are connected in parallel with each other, and each of the winding branches is independently controlled by the power device.
  • the multi-phase winding is composed of m phases, wherein each of the winding branches includes a first power device, a sub-winding, and a second power device.
  • the winding branch includes a first power device Tm1n, a sub-winding Lmn, and a second power device Tm2n, wherein the first power device Tm1n and the second power device Tm2n are respectively connected in series to the sub-winding Lmn Both ends.
  • the multi-phase winding comprises an A-phase winding, a B-phase winding, and a C-phase winding, wherein each of the winding branches includes a first power device, a sub-winding, and a second power component.
  • the winding branch of the A-phase winding is composed of an A-phase first power device TA1n, an A-phase sub-winding LnA, and an A-phase second power device TA2n
  • the winding branch of the B-phase winding is routed to the B-phase first power device TB1n a B-phase sub-winding LnB and a B-phase second power device TB2n
  • the winding branch of the C-phase winding is composed of a C-phase first power device TC1n, a C-phase sub-winding LnC, and a C-phase second power device TC2n;
  • One end of the A-phase first power device TA1n is connected to the positive pole of the power source, and the other end is connected to one end of the A-phase sub-winding LnA, one end of the C-phase sub-winding LnC and the other end of the A-phase second power device TA2n;
  • the other end of the A-phase sub-winding LnA is connected to the other end of the B-phase first power device TB11, the other end of the B-phase second power device TB21, and one end of the B-phase sub-winding LnB, and the A phase is second.
  • One end of the power device TA2n is grounded;
  • One end of the B-phase first power device TB1n is connected to the positive pole of the power source, and the other end is respectively connected to the other end of the A-phase sub-winding LnA, the other end of the B-phase second power device TB2n, and the B-phase sub-winding LnB.
  • One end of the B-phase sub-winding LnB is connected to the other end of the C-phase first power device TC11 and the other end of the C-phase second power device TC21; the B-phase second power device TB2n is grounded at one end;
  • One end of the C-phase first power device TC1n is connected to the positive pole of the power source, and the other end is respectively connected to the other end of the C-phase sub-winding LnC and the other end of the B-phase sub-winding LnB, the C-phase second power One end of the device TC2n is grounded.
  • the multi-phase winding comprises an A-phase winding, a B-phase winding and a C-phase winding, wherein the winding branches respectively comprise a first power device, a sub-winding and a second power Device.
  • the A-phase winding branches are respectively composed of an A-phase first power device TA1n, an A-phase sub-winding LnA and an A-phase second power device TA2n
  • the A-phase winding branches are respectively composed of a B-phase first power device TB1n a B-phase sub-winding LnB and a B-phase second power device TB2n
  • the C-phase winding branches are respectively composed of a C-phase first power device TC1n, a C-phase sub-winding LnC, and a C-phase second power device TC2n;
  • One end of the A-phase first power device TA1n is connected to the positive pole of the power source, and the other end is respectively connected to one end of the A-phase sub-winding LnA and the other end of the A-phase second power device TA2n, and the A-phase second power device TA2n Grounded at one end;
  • One end of the B-phase first power device TB1n is connected to the positive pole of the power source, and the other end is respectively connected to one end of the B-phase sub-winding LnB and the other end of the B-phase second power device TB2n, the B-phase second power One end of the device TB2n is grounded;
  • One end of the C-phase first power device TC1n is connected to the positive pole of the power source, and the other end is respectively connected to one end of the C-phase sub-winding LnC and the other end of the C-phase second power device TC2n, the C-phase second power device TC2n Grounded at one end;
  • the other ends of the A-phase sub-winding LnA, the B-phase sub-winding LnB, and the C-phase sub-winding LnC are commonly connected together.
  • the invention has the beneficial effects that the power device is independently controlled according to each winding branch of the motor, and the current device does not need to be evenly flowed compared with the prior art, which can effectively avoid the burning of the power device and improve the stability and reliability of the whole system. Further, it is possible to reduce the production cost and realize the control of a high-power motor with a small power device.
  • FIG. 1 is a schematic structural view of a high power device for controlling a high power motor in the prior art
  • FIG. 2 is a schematic structural view of a prior art small power device controlling a high power motor
  • FIG. 3 is a circuit diagram of a high power motor for implementing winding parallel control according to Embodiment 1 of the present invention
  • FIG. 4 is a circuit diagram of a high power motor for implementing winding parallel control according to Embodiment 2 of the present invention.
  • Fig. 5 is a circuit diagram of a high power motor for implementing winding parallel control according to a third embodiment of the present invention.
  • FIG. 3 is a circuit diagram of a high-power motor for implementing winding parallel control according to Embodiment 1 of the present invention.
  • the motor 10 disclosed in this embodiment includes a multi-phase winding 11, such as an m-phase winding, where m is greater than or equal to one.
  • Each phase winding 11 comprises at least two winding branches 111, i.e. each phase winding 11 comprises n winding branches 111 arranged in parallel, wherein n is greater than or equal to two.
  • the motor disclosed in this embodiment is described by taking a phase winding 11 as an example.
  • the windings 11 of the other phases have the same principle as the phase winding 11 and will not be described herein.
  • each winding branch 111 includes at least one sub-winding L1n and two power devices 1111 in series with the sub-winding L1n.
  • the first winding branch 111 of the phase winding 11 includes a sub-winding L11 and two power devices 1111 connected in series with the sub-winding L11.
  • the two power devices 1111 are a power device T11 and a power device T21, respectively.
  • the power device T11, the sub-winding L11, and the power device T21 are connected in series.
  • the sub-winding L11 on at least two winding branches 111 is wound into a winding integral L1.
  • the phase winding 11 includes n winding branches 111, and the sub-winding L11, the sub-windings L12, ..., and the sub-winding L1n are wound. Make a winding integral L1.
  • the power rating of the power device 1111 of each parallel branch is greater than the actual power required by the parallel branch sub-winding L1n.
  • the rated power of the power device T11 is greater than the actual power of the winding branch 111 where the power device T11 is located when the phase winding 11 is in operation, when the winding branch 111 is operated or stopped, the power device T11 or the power device T21 is avoided.
  • One power device 1111 is damaged due to excessive current.
  • the first parallel branch 111 includes an electronic component D111 and an electronic component D121.
  • the electronic component D111 and the electronic component D121 are freewheeling diodes.
  • the winding integral L1 is divided into a sub-winding L11, a sub-winding L12, ... and a sub-winding L1n, that is, a sub-winding L11, a sub-winding L12, ... and a sub-winding L1n are wound to form a winding integral L1.
  • sub-winding L11 is controlled by two low-power power devices T11 and power devices T21
  • sub-winding L12 is controlled by two low-power power devices T12 and power devices T22
  • the sub-winding L1n is controlled by two low-power power devices T1n and power devices T2n.
  • the present embodiment uses the low power power device 1111 to control the high power motor 10, reducing the cost.
  • FIG. 4 is a circuit diagram of a high-power motor for implementing parallel control of windings according to Embodiment 2 of the present invention.
  • the winding connection mode of the motor disclosed in this embodiment is a delta connection, and the motor has three-phase windings, which are: an A-phase winding, a B-phase winding, and a C-phase winding.
  • the winding branch of the A-phase winding comprises an A-phase first power device TA1n, an A-phase sub-winding LnA and an A-phase second power device TA2n;
  • the winding branch of the B-phase winding comprises a B-phase first power device TB1n, B phase The sub-winding LnB and the B-phase second power device TB2n;
  • the winding branch of the C-phase winding includes a C-phase first power device TC1n, a C-phase sub-winding LnC, and a C-phase second power device TC2n. Since the delta connection control method is well known to those skilled in the art, the control principle will not be further described herein. For the embodiment, a detailed description will be given of the connection method.
  • the end of the power device connected to the positive pole or the ground of the power supply is simply referred to as one end, and the corresponding end that is not connected to the positive pole or the ground of the power supply is simply referred to as the other end.
  • the A-phase first power device TA1n described below does not specifically mean that the power device only controls the motor winding of the parallel branch of the phase, which can be completed by cooperating with other parallel-connected branch power devices connected thereto. The corresponding tasks, so described here are only for the sake of understanding.
  • one end of the A-phase first power device TA11 is connected to the positive pole of the power source, and the other end is respectively connected to one end A11 of the A-phase sub-winding L1A, one end C11 of the C-phase sub-winding L1C, and the other end of the A-phase second power device TA21;
  • the other end A12 of the A-phase sub-winding L1A is connected to the other end of the B-phase first power device TB11, the other end of the B-phase second power device TB21, and the B-phase sub-winding L1B end B11; the A-phase second power device TA21 is grounded at one end.
  • One end of the B-phase first power device TB11 is connected to the positive electrode of the power source, and the other end is connected to the other end of the A-phase sub-winding L1A, the other end A12, the second phase of the second power device TB21, and the B-phase sub-winding L1B end B11.
  • the other end B12 of the B-phase sub-winding L1B is connected to the other end of the C-phase first power device TC11, the other end of the C-phase second power device TC21, and the other end C12 of the C-phase sub-winding L1C; the B-phase second power device TB21 is grounded at one end.
  • One end of the C-phase first power device TC11 is connected to the positive pole of the power supply, and the other end is respectively connected to the other end C12 of the C-phase sub-winding L1C, the other end B12 of the B-phase sub-winding L1B, and the other end of the C-phase second power device TC21;
  • the power device TC21 is grounded at one end.
  • the winding branch of the A-phase winding includes the electronic components DA11 and DA21;
  • the winding branch of the B-phase winding includes the electronic components DB11 and DB21
  • the winding branch of the C-phase winding includes electronic components DC11 and DC21, and the electronic components DA11, DA21, DB11, DB21, DC11 and DC21 are freewheeling diodes.
  • At least two winding branches of each phase winding are wound into one winding whole.
  • the A-phase winding includes n parallel winding branches LnA, and the sub-winding L1A, the sub-windings L2A, ..., and the sub-winding LnA are wound into one.
  • Winding overall LA Similarly, the B-phase winding is wound into a winding integral LB by the sub-winding L1B, the sub-windings L2B, ... and the sub-winding LnB; the C-phase winding is wound by the sub-winding L1C, the sub-winding L2C, ... and the sub-winding LnC.
  • One winding integral LC One winding integral LC.
  • the A-phase winding LA, the B-phase winding LB, and the C-phase winding LC together form a motor.
  • the winding branch of the A-phase winding, the winding branch of the B-phase winding, and the winding branch of the C-phase winding are independently controlled, it is not necessary to perform current sharing on the power devices of the winding branch to avoid burning of the power device. .
  • the present embodiment uses a low power power device to control a high power motor and reduce the cost.
  • the first power device and the second power device may respectively be an insulated gate bipolar transistor (IGBT), a metal-oxide semiconductor field effect transistor (MOSFET), a power transistor (GTR), or an integrated gate switch.
  • IGBT insulated gate bipolar transistor
  • MOSFET metal-oxide semiconductor field effect transistor
  • GTR power transistor
  • IGCT flow thyristors
  • those skilled in the art can also set the first power device and the second power device as other power devices.
  • FIG. 5 is a circuit diagram of a high power motor for implementing parallel control of windings according to a third embodiment of the present invention.
  • the winding connection mode of the motor disclosed in this embodiment is a star connection, and has three phases, namely: an A phase winding, a B phase winding, and a C phase winding.
  • the A-phase winding branch includes an A-phase first power device TA1n, an A-phase sub-winding LnA, and an A-phase second power device TA2n
  • the B-phase winding branch includes a B-phase first power device TB1n, a B-phase sub-winding LnB, and The B-phase second power device TB2n
  • the C-phase winding branch includes a C-phase first power device TC1n, a C-phase sub-winding LnC, and a C-phase second power device TC2n. Since the star connection control method is well known to those skilled in the art, the control principle will not be further described herein. For the present embodiment, only a specific introduction will be made here.
  • the end of the power device connected to the positive pole or the ground of the power supply is simply referred to as one end, and the corresponding end that is not connected to the positive pole or the ground of the power supply is simply referred to as the other end.
  • the A-phase first power device TA1n described below does not specifically mean that the power device only controls the motor winding of the parallel branch of the phase, which can be matched with other parallel-connected branch power devices connected to each other to complete the corresponding
  • the task, as described here, is only for ease of understanding.
  • one end of the A-phase first power device TA11 is connected to the positive pole of the power source, and the other end is connected to the other end of the A-phase sub-winding L1A and the other end of the A-phase second power device TA21; the second-phase second power device TA2n is grounded at one end.
  • One end of the B-phase first power device TB11 is connected to the positive pole of the power source, and the other end is respectively connected to the other end of the B-phase sub-winding LnB end B12 and the B-phase second power device TB21; the second power device TB2n is grounded at one end.
  • One end of the C-phase first power device TC11 is connected to the positive pole of the power source, and the other end is respectively connected to one end of the C-phase sub-winding L1C and one end of the C-phase second power device TC21; the other end of the C-phase second power device TC21 is grounded.
  • the other end A12 of the A-phase sub-winding LnA, the other end B12 of the B-phase sub-winding LnB, and the other end C12 of the C-phase sub-winding LnC are commonly connected together.
  • the winding branch of the A-phase winding includes the electronic components DA11 and DA21;
  • the winding branch of the B-phase winding includes the electronic components DB11 and DB21
  • the winding branch of the C-phase winding includes electronic components DC11 and DC21, and the electronic components DA11, DA21, DB11, DB21, DC11 and DC21 are freewheeling diodes.
  • At least two winding branches of each phase winding are wound into one winding whole.
  • the A-phase winding includes n parallel winding branches LnA, and the sub-winding L1A, the sub-windings L2A, ..., and the sub-winding LnA are wound into one.
  • Winding overall LA Similarly, the B-phase winding is wound into a winding integral LB by the sub-winding L1B, the sub-windings L2B, ... and the sub-winding LnB; the C-phase winding is wound by the sub-winding L1C, the sub-winding L2C, ... and the sub-winding LnC.
  • One winding integral LC One winding integral LC.
  • the A-phase winding LA, the B-phase winding LB, and the C-phase winding LC together form a motor.
  • the winding branch of the A-phase winding, the winding branch of the B-phase winding, and the winding branch of the C-phase winding are independently controlled, it is not necessary to perform current sharing on the power devices of the winding branch to avoid burning of the power device. .
  • the present embodiment uses a low power power device to control a high power motor and reduce the cost.
  • the first power device and the second power device may respectively be an insulated gate bipolar transistor (IGBT), a metal-oxide semiconductor field effect transistor (MOSFET), a power transistor (GTR), or an integrated gate switch.
  • IGBT insulated gate bipolar transistor
  • MOSFET metal-oxide semiconductor field effect transistor
  • GTR power transistor
  • IGCT flow thyristors
  • those skilled in the art can also set the first power device and the second power device as other power devices.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Control Of Ac Motors In General (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

一种实现绕组并联控制的大功率电机（10），该电机（10）包括多相绕组（11），每相所述绕组（11）由n个绕组支路（111）及2n个功率器件（1111）组成；其中，所述n个绕组支路（111）互相并联，每个所述绕组支路（111）由所述功率器件（1111）独立控制。该方案解决了用小功率的功率器件实现对大功率电机（10）进行控制的技术难题，并且电机（10）运行的可靠性与稳定性更高。

Description

一种实现绕组并联控制的大功率电机
【技术领域】
本发明涉及电机技术领域，特别是涉及一种实现绕组并联控制的大功率电机。
【背景技术】
在电机的控制中，通常需要使用功率器件，如绝缘栅双极型晶体管（IGBT）、金属-氧化物半导体场效应晶体管（MOSFET）、电力晶体管（GTR）或集成门极换流晶闸管（IGCT）。如图1所示，电机每相绕组由2个独立功率器件、1个独立相绕组组成。电流经E点流入后，通过控制功率器件而实现对电机各相的导通与否控制。但在大功率电机的控制中，需要用到大功率的功率器件，而大功率的功率器件往往因种类少等原因很难找到合适的，且价格昂贵。
为了解决上述问题，现有技术中提供了一种功率器件并联再与相绕组串联的方案。如图2所示，电机每相绕组由2n个独立功率器件和1个独立相绕组组成。电流由E点流入后会被n个两两组合的独立功率器件分流而实现用小功率功率器件控制大功率电机。但该方案由于受到功率器件一致性的影响，实现起来需要解决均流的技术难题。
【发明内容】
本发明主要解决的技术问题是提供一种实现绕组并联控制的大功率电机，以解决上述问题。
为了解决上述问题，本发明采用的一个技术方案是：提供了一种实现绕组并联控制的大功率电机，其包括多相绕组，每相所述绕组由n个绕组支路及2n个功率器件组成；其中，所述n个绕组支路互相并联，每个所述绕组支路由所述功率器件独立控制。
其中，当所述绕组为不对称半桥连接方式时，所述多相绕组由m相组成，其中每个所述绕组支路包括第一功率器件、子绕组及第二功率器件。
其中，所述绕组支路包括第一功率器件Tm1n、子绕组Lmn及第二功率器件Tm2n，其中，所述第一功率器件Tm1n和所述第二功率器件Tm2n分别串联于所述子绕组Lmn的两端。
其中，当所述绕组为三角型连接方式时，所述多相绕组包括A相绕组、B相绕组和C相绕组，其中每个所述绕组支路包括第一功率器件、子绕组及第二功率器件。
其中，所述A相绕组的绕组支路由A相第一功率器件TA1n、A相子绕组LnA及A相第二功率器件TA2n组成，所述B相绕组的绕组支路由B相第一功率器件TB1n、B相子绕组LnB及B相第二功率器件TB2n组成，所述C相绕组的绕组支路由C相第一功率器件TC1n、C相子绕组LnC及C相第二功率器件TC2n组成；其中：
所述A相第一功率器件TA1n一端与电源正极连接，另一端分别与所述A相子绕组LnA一端、所述C相子绕组LnC一端及所述A相第二功率器件TA2n另一端连接；所述A相子绕组LnA另一端与所述B相第一功率器件TB11另一端、所述B相第二功率器件TB21另一端及所述B相子绕组LnB一端连接，所述A相第二功率器件TA2n一端接地；
所述B相第一功率器件TB1n一端与所述电源正极连接，另一端分别与所述A相子绕组LnA另一端、所述B相第二功率器件TB2n另一端及所述B相子绕组LnB一端连接；所述B相子绕组LnB另一端与所述C相第一功率器件TC11另一端、所述C相第二功率器件TC21另一端连接；所述B相第二功率器件TB2n一端接地；
所述C相第一功率器件TC1n一端与所述电源正极连接，另一端分别与所述C相子绕组LnC另一端、及所述B相子绕组LnB另一端连接，所述C相第二功率器件TC2n一端接地。
其中，当所述绕组为星型连接方式时，所述多相绕组包括A相绕组、B相绕组和C相绕组，其中所述绕组支路分别包括第一功率器件、子绕组及第二功率器件。
其中，所述A相绕组支路分别由A相第一功率器件TA1n、A相子绕组LnA及A相第二功率器件TA2n组成，所述A相绕组支路分别由B相第一功率器件TB1n、B相子绕组LnB及B相第二功率器件TB2n组成，所述C相绕组支路分别由C相第一功率器件TC1n、C相子绕组LnC及C相第二功率器件TC2n组成；其中：
所述A相第一功率器件TA1n一端与电源正极连接，另一端分别与所述A相子绕组LnA一端及所述A相第二功率器件TA2n另一端连接，所述A相第二功率器件TA2n一端接地；
所述B相第一功率器件TB1n一端与所述电源正极连接，另一端分别与所述B相子绕组LnB一端及所述B相第二功率器件TB2n另一端连接，所述B相第二功率器件TB2n一端接地；
所述C相第一功率器件TC1n一端与电源正极连接，另一端分别与所述C相子绕组LnC一端及所述C相第二功率器件TC2n另一端连接，所述C相第二功率器件TC2n一端接地；
其中所述A相子绕组LnA、B相子绕组LnB和C相子绕组LnC 的另一端共同连接在一起。
本发明的有益效果：由于电机的每个绕组支路由功率器件独立控制，与现有技术相比，无需对功率器件进行均流，能够有效地避免功率器件烧毁，提高整个系统的稳定性与可靠性；进一步地，能够降低生产成本，实现用小功率器件控制大功率电机。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要采用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。其中：
图1是现有技术的一种大功率器件控制大功率电机的结构示意图；
图2是现有技术的一种小功率器件控制大功率电机的结构示意图；
图3是本发明实施例一的实现绕组并联控制的大功率电机的电路图；
图4是本发明实施例二的实现绕组并联控制的大功率电机的电路图；
图5是本发明实施例三的实现绕组并联控制的大功率电机的电路图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性的劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参见图3所示，图3是本发明实施例一的实现绕组并联控制的大功率电机的电路图。如图3所示，本实施例所揭示的电机10包括多相绕组11，例如m相绕组，其中m大于等于1。每相绕组11至少包括两个绕组支路111，即每相绕组11包括并联设置的n个绕组支路111，其中n大于等于2。
本实施例所揭示的电机以一相绕组11为例进行说明，其他相的绕组11与该相绕组11原理相同，在此不再赘述。
具体而言，每一绕组支路111包括至少一子绕组L1n以及两个与子绕组L1n串联的功率器件1111。如图3所示，该相绕组11的第一绕组支路111包括一个子绕组L11和两个与该子绕组L11串联的功率器件1111，两个功率器件1111分别为功率器件T11和功率器件T21，功率器件T11、子绕组L11以及功率器件T21串联连接。
至少两个绕组支路111上的子绕组L11绕制成一个绕组整体L1，例如该相绕组11包括n个绕组支路111，则子绕组L11、子绕组L12、……以及子绕组L1n绕制成一个绕组整体L1。
其中，每个并联支路的功率器件1111的额定功率大于该并联支路子绕组L1n所需实际功率。
由于功率器件T11的额定功率大于在该相绕组11工作时功率器件T11所在的绕组支路111的实际功率，因此在绕组支路111工作或者停止工作时，避免功率器件T11或者功率器件T21中的一个功率器件1111因电流过大而损坏。
其中，第一并联支路111包括电子元器件D111和电子元器件D121，该电子元器件D111和电子元器件D121为续流二极管。
以下详细描述下绕组11的工作原理。
绕组整体L1被分成子绕组L11、子绕组L12、……以及子绕组L1n，即由子绕组L11、子绕组L12、……以及子绕组L1n绕制成绕组整体L1。
对于每个子绕组L1n，其中：子绕组L11，通过两个小功率的功率器件T11和功率器件T21进行控制；子绕组L12，通过两个小功率的功率器件T12和功率器件T22进行控制；……子绕组L1n，通过两个小功率的功率器件T1n和功率器件T2n进行控制。在功率器件T1n和功率器件T2n同时导通时，对应的子绕组L1n开始工作。
由于每个子绕组L1n所对应的功率器件T1n和功率器件T2n都是相对独立的，因此无需对并联的功率器件1111进行均流，避免功率器件1111烧毁。
由于子绕组L11、子绕组L12、……以及子绕组L1n采用并联方式连接，使得电机绕组11的可靠性更高，冗余度好。
此外，本实施例采用小功率的功率器件1111控制大功率电机10，降低成本。
请参见图4所示，图4是本发明实施例二的实现绕组并联控制的大功率电机的电路图。如图4所示，本实施例所揭示的电机的绕组连接方式为三角形连接，电机共有三相绕组，分别为：A相绕组、B相绕组和C相绕组。其中，A相绕组的绕组支路包括A相第一功率器件TA1n、A相子绕组LnA及A相第二功率器件TA2n；B相绕组的绕组支路包括B相第一功率器件TB1n、B相子绕组LnB及B相第二功率器件TB2n；C相绕组的绕组支路包括C相第一功率器件TC1n、C相子绕组LnC及C相第二功率器件TC2n。由于三角形连接控制方式已为本领域内技术人员所熟知，这里不再进一步叙述控制原理。针对本实施例，对连接方式做一个详细的说明。
以每相的第一并联支路为例，为了叙述方便，以下将功率器件与电源正极或接地相连一端简称为一端，则相应的不与电源正极或接地相连一端简称为另一端。特别地，以下所述的A相第一功率器件TA1n并不特指该功率器件只控制该相该并联支路的电机绕组，其可以与相连接的其他相并联支路功率器件相配合而完成相应任务，这里如此叙述只为方便理解。
具体而言，A相第一功率器件TA11一端与电源正极连接，另一端分别与所述A相子绕组L1A一端A11、C相子绕组L1C一端C11及A相第二功率器件TA21另一端连接；A相子绕组L1A另一端A12与B相第一功率器件TB11另一端、B相第二功率器件TB21另一端及B相子绕组L1B一端B11连接；A相第二功率器件TA21一端接地。
B相第一功率器件TB11一端与电源正极连接，另一端分别与所述A相子绕组L1A另一端A12、B相第二功率器件TB21另一端及B相子绕组L1B一端B11连接。B相子绕组L1B另一端B12与C相第一功率器件TC11另一端、C相第二功率器件TC21另一端及C相子绕组L1C另一端C12连接；B相第二功率器件TB21一端接地。
C相第一功率器件TC11一端与电源正极连接，另一端分别与C相子绕组L1C另一端C12、B相子绕组L1B另一端B12及C相第二功率器件TC21另一端连接；C相第二功率器件TC21一端接地。
其中，A相绕组的绕组支路包括电子元器件DA11和DA21；B相绕组的绕组支路包括电子元器件DB11和DB21 ；C相绕组的绕组支路包括电子元器件DC11和DC21，电子元器件DA11、DA21、DB11、DB21、DC11和DC21为续流二极管。
每相绕组的至少两个绕组支路绕制成一个绕组整体，例如A相绕组包括n个并联的绕组支路LnA，则子绕组L1A、子绕组L2A、……以及子绕组LnA绕制成一个绕组整体LA。同理，B相绕组则由子绕组L1B、子绕组L2B、……以及子绕组LnB绕制成一个绕组整体LB；C相绕组则由子绕组L1C、子绕组L2C、……以及子绕组LnC绕制成一个绕组整体LC。A相绕组LA、B相绕组LB和C相绕组LC共同组成一电机。
在本实施例中，由于A相绕组的绕组支路、B相绕组的绕组支路和C相绕组的绕组支路均独立控制，无需对绕组支路的功率器件进行均流，避免功率器件烧毁。
此外，本实施例采用小功率的功率器件控制大功率电机，降低成本。
在本实施例中，第一功率器件和第二功率器件分别可为绝缘栅双极型晶体管（IGBT）、金属-氧化物半导体场效应晶体管（MOSFET）、电力晶体管（GTR）或集成门极换流晶闸管（IGCT）中的一种。在其他实施例中，本领域的技术人员还可以将第一功率器件和第二功率器件设置为其他功率器件。
请参见图5所示，图5是本发明实施例三的实现绕组并联控制的大功率电机的电路图。如图5所示，本实施例所揭示的电机的绕组连接方式为星型连接，共有三相，分别为：A相绕组、B相绕组和C相绕组。其中，A相绕组支路包括A相第一功率器件TA1n、A相子绕组LnA及A相第二功率器件TA2n，B相绕组支路包括B相第一功率器件TB1n、B相子绕组LnB及B相第二功率器件TB2n，C相绕组支路包括C相第一功率器件TC1n、C相子绕组LnC及C相第二功率器件TC2n。由于星型连接控制方式已为本领域内技术人员所熟知，这里不再进一步叙述控制原理。针对本实施例，这里只对连接方式做一个具体的介绍。
以每相的第一绕组支路为例，为了叙述方便，以下将功率器件与电源正极或接地相连一端简称为一端，则相应的不与电源正极或接地相连一端简称为另一端。特别地，以下所述A相第一功率器件TA1n并不特指该功率器件只控制该相该并联支路的电机绕组，其可以与相连接的其他相并联支路功率器件相配合而完成相应任务，这里如此叙述只为方便理解。
具体而言，A相第一功率器件TA11一端与电源正极连接，另一端分别与A相子绕组L1A一端A11及A相第二功率器件TA21另一端连接；A相第二功率器件TA2n一端接地。
B相第一功率器件TB11一端与电源正极连接，另一端分别与B相子绕组LnB一端B12及B相第二功率器件TB21另一端连接；第二功率器件TB2n一端接地。
C相第一功率器件TC11一端与电源正极连接，另一端分别与C相子绕组L1C一端及C相第二功率器件TC21一端连接；C相第二功率器件TC21另一端接地。特别地，A相子绕组LnA的另一端A12、B相子绕组LnB的另一端B12和C相子绕组LnC另一端C12共同连接在一起。
其中，A相绕组的绕组支路包括电子元器件DA11和DA21；B相绕组的绕组支路包括电子元器件DB11和DB21 ；C相绕组的绕组支路包括电子元器件DC11和DC21，电子元器件DA11、DA21、DB11、DB21、DC11和DC21为续流二极管。
每相绕组的至少两个绕组支路绕制成一个绕组整体，例如A相绕组包括n个并联的绕组支路LnA，则子绕组L1A、子绕组L2A、……以及子绕组LnA绕制成一个绕组整体LA。同理，B相绕组则由子绕组L1B、子绕组L2B、……以及子绕组LnB绕制成一个绕组整体LB；C相绕组则由子绕组L1C、子绕组L2C、……以及子绕组LnC绕制成一个绕组整体LC。A相绕组LA、B相绕组LB和C相绕组LC共同组成一电机。
在本实施例中，由于A相绕组的绕组支路、B相绕组的绕组支路和C相绕组的绕组支路均独立控制，无需对绕组支路的功率器件进行均流，避免功率器件烧毁。
此外，本实施例采用小功率的功率器件控制大功率电机，降低成本。
在本实施例中，第一功率器件和第二功率器件分别可为绝缘栅双极型晶体管（IGBT）、金属-氧化物半导体场效应晶体管（MOSFET）、电力晶体管（GTR）或集成门极换流晶闸管（IGCT）中的一种。在其他实施例中，本领域的技术人员还可以将第一功率器件和第二功率器件设置为其他功率器件。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (7)

  1. 一种实现绕组并联控制的大功率电机，其特征在于，所述电机包括多相绕组，每相所述绕组由n个绕组支路及2n个功率器件组成；其中，所述n个绕组支路互相并联，每个所述绕组支路由所述功率器件独立控制。
  2. 根据权利要求1所述的电机，其特征在于，当所述绕组为不对称半桥连接方式时，所述多相绕组由m相组成，其中每个所述绕组支路包括第一功率器件、子绕组及第二功率器件。
  3. 根据权利要求2所述的电机，其特征在于，所述绕组支路包括第一功率器件Tm1n、子绕组Lmn及第二功率器件Tm2n，其中，所述第一功率器件Tm1n和所述第二功率器件Tm2n分别串联于所述子绕组Lmn的两端。
  4. 根据权利要求1所述的电机，其特征在于，当所述绕组为三角型连接方式时，所述多相绕组包括A相绕组、B相绕组和C相绕组，其中每个所述绕组支路包括第一功率器件、子绕组及第二功率器件。
  5. 根据权利要求4所述的电机，其特征在于，所述A相绕组的绕组支路由A相第一功率器件TA1n、A相子绕组LnA及A相第二功率器件TA2n组成，所述B相绕组的绕组支路由B相第一功率器件TB1n、B相子绕组LnB及B相第二功率器件TB2n组成，所述C相绕组的绕组支路由C相第一功率器件TC1n、C相子绕组LnC及C相第二功率器件TC2n组成；其中：
    所述A相第一功率器件TA1n一端与电源正极连接，另一端分别与所述A相子绕组LnA一端、所述C相子绕组LnC一端及所述A相第二功率器件TA2n另一端连接；所述A相子绕组LnA另一端与所述B相第一功率器件TB11另一端、所述B相第二功率器件TB21另一端及所述B相子绕组LnB一端连接，所述A相第二功率器件TA2n一端接地；
    所述B相第一功率器件TB1n一端与所述电源正极连接，另一端分别与所述A相子绕组LnA另一端、所述B相第二功率器件TB2n另一端及所述B相子绕组LnB一端连接；所述B相子绕组LnB另一端与所述C相第一功率器件TC11另一端、所述C相第二功率器件TC21另一端连接；所述B相第二功率器件TB2n一端接地；
    所述C相第一功率器件TC1n一端与所述电源正极连接，另一端分别与所述C相子绕组LnC另一端、及所述B相子绕组LnB另一端连接，所述C相第二功率器件TC2n一端接地。
  6. 根据权利要求1所述的电机，其特征在于，当所述绕组为星型连接方式时，所述多相绕组包括A相绕组、B相绕组和C相绕组，其中所述绕组支路分别包括第一功率器件、子绕组及第二功率器件。
  7. 根据权利要求6所述的电机，其特征在于，所述A相绕组支路分别由A相第一功率器件TA1n、A相子绕组LnA及A相第二功率器件TA2n组成，所述A相绕组支路分别由B相第一功率器件TB1n、B相子绕组LnB及B相第二功率器件TB2n组成，所述C相绕组支路分别由C相第一功率器件TC1n、C相子绕组LnC及C相第二功率器件TC2n组成；其中：
    所述A相第一功率器件TA1n一端与电源正极连接，另一端分别与所述A相子绕组LnA一端及所述A相第二功率器件TA2n另一端连接，所述A相第二功率器件TA2n一端接地；
    所述B相第一功率器件TB1n一端与所述电源正极连接，另一端分别与所述B相子绕组LnB一端及所述B相第二功率器件TB2n另一端连接，所述B相第二功率器件TB2n一端接地；
    所述C相第一功率器件TC1n一端与电源正极连接，另一端分别与所述C相子绕组LnC一端及所述C相第二功率器件TC2n另一端连接，所述C相第二功率器件TC2n一端接地；
    其中所述A相子绕组LnA、B相子绕组LnB和C相子绕组LnC 的另一端共同连接在一起。
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