WO2021109898A1 - Double-phase winding power-on heating method of three-phase compressor - Google Patents

Double-phase winding power-on heating method of three-phase compressor Download PDF

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Publication number
WO2021109898A1
WO2021109898A1 PCT/CN2020/131145 CN2020131145W WO2021109898A1 WO 2021109898 A1 WO2021109898 A1 WO 2021109898A1 CN 2020131145 W CN2020131145 W CN 2020131145W WO 2021109898 A1 WO2021109898 A1 WO 2021109898A1
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combination
phase
phase compressor
compressor
energized
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PCT/CN2020/131145
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French (fr)
Chinese (zh)
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刘春丽
邵海柱
耿焱
时斌
冯正阳
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青岛海尔空调电子有限公司
海尔智家股份有限公司
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Publication of WO2021109898A1 publication Critical patent/WO2021109898A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/60—Controlling or determining the temperature of the motor or of the drive
    • H02P29/64—Controlling or determining the temperature of the winding

Definitions

  • the invention belongs to the technical field of compressors, and specifically provides a two-phase winding energization heating method of a three-phase compressor.
  • Electric auxiliary heating belt heating is to add an external electric heating belt to the compressor, which is heated by supplying power to the heating belt;
  • winding copper loss heating is to apply a large current to the compressor winding, and heat is generated by the winding resistance, which is copper loss.
  • This method has the problems of excessive energy consumption and heat generation of the power module, especially for compressors with larger power, because the winding resistance is too small, this method is difficult to achieve; winding iron loss heating has energy consumption compared with the previous two heating methods Low, high calorific value and high reliability.
  • Winding iron loss heating is to apply high-frequency AC voltage to the two phases of the compressor to increase the hysteresis loss and eddy current loss of the compressor's ferromagnetic material to achieve the purpose of winding heating, driving the module
  • Both the compressor and the compressor are three-phase. During normal operation, all three phases are used, and only two of the phases are used for heating. Therefore, the two phases used for heating are more likely to age and reduce the service life of the device.
  • the present invention provides a three-phase
  • the two-phase winding energization heating method of the compressor includes: obtaining the last energized winding combination of the three-phase compressor; according to the obtained result, making the three-phase compressor execute a different energized winding combination from the last energized winding combination.
  • the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: If the last energized winding combination of the three-phase compressor is UV The energization combination makes the three-phase compressor perform VW energization combination.
  • the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding combination of the three-phase compressor is VW The energization combination makes the three-phase compressor perform WU energization combination.
  • the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding combination of the three-phase compressor is WU The energization combination enables the three-phase compressor to perform the UV energization combination.
  • the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding combination of the three-phase compressor is UV The energization combination makes the three-phase compressor perform WU energization combination.
  • the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding combination of the three-phase compressor is WU The energization combination makes the three-phase compressor perform VW energization combination.
  • the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding combination of the three-phase compressor is VW The energization combination enables the three-phase compressor to perform the UV energization combination.
  • the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding of the three-phase compressor is not obtained Combination, the three-phase compressor performs UV energization combination.
  • the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding of the three-phase compressor is not obtained Combination, the three-phase compressor performs VW energization combination.
  • the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding of the three-phase compressor is not obtained Combination, the three-phase compressor performs WU energization combination.
  • the last energized winding combination of the three-phase compressor is obtained, and then according to the obtained result, the three-phase compressor is made to perform a different combination from the last energized winding combination.
  • the energized winding combination can balance the use of all phases of the three-phase compressor through such a setting, so that the three-phases of the three-phase compressor are averagely aged, and the service life of the three-phase compressor is improved.
  • Figure 1 is a flow chart of the two-phase winding energized heating method of the three-phase compressor of the present invention
  • Figure 2 is a schematic diagram of the connection between the three-phase compressor and the three-phase inverter of the present invention
  • Fig. 3 is a flow chart of an embodiment of the method for energizing the two-phase winding of the three-phase compressor of the present invention.
  • the present invention provides a two-phase winding energized heating for a three-phase compressor
  • the method aims to balance the use of all phases of the three-phase compressor, so that the three phases of the three-phase compressor are averagely aged, and the service life of the three-phase compressor is improved.
  • the two-phase winding energization heating method of the three-phase compressor of the present invention includes: obtaining the last energized winding combination of the three-phase compressor; Different combinations of energized windings. Among them, the obtained result can be that the last energized winding combination is detected, or the last energized winding combination is not detected. If the result is that the last energized winding combination is detected, it means that the compressor has performed winding heating before. The result is that the last energized winding combination is not detected, indicating that the compressor may be heating the windings for the first time, or the previous data may be cleared. Take the three phases of the three-phase compressor as U-phase, V-phase and W-phase for example.
  • the three-phase compressor 3 is connected to the DC bus 1 through the three-phase inverter 2, and the three-phase reverse
  • the converter 2 includes a first positive side switch component (including parallel VT1 and VD1) and a first negative side switch component (including parallel VT2 and VD2) connected in series with each other, and a second positive side switch component (including parallel connected VT3 and VD3) and the second negative side switch component (including parallel VT4 and VD4), the third positive side switch component (including parallel VT5 and VD5) and the third negative side switch component (including parallel VT6 and VD4) connected in series with each other VD6), the first ends of the first to third positive side switch components are connected to the positive pole of the DC bus, and the second ends of the first to third positive side switch components are connected to the first to third negative side switch components.
  • One end is connected, and the three-phase windings of the three-phase compressor 3 are respectively connected between the three sets of positive and negative switch assemblies (specifically, the U-phase of the three-phase compressor 3 is connected to the first positive side switch assembly and the first negative side switch
  • the V phase of the three-phase compressor 3 is connected between the second positive side switch assembly and the second negative side switch assembly
  • the W phase of the three-phase compressor 3 is connected between the third positive side switch assembly and the third negative electrode.
  • the second ends of the first to third negative side switch components are connected to the negative pole of the DC bus.
  • the three-phase compressor 3 When VT1 and VT4 are turned on and VT2, VT3, VT5 and VT6 are turned off, the three-phase compressor 3 performs the UV energization combination; when VT3 and VT6 are turned on and VT1, VT2, VT4 and VT5 are turned off, the three-phase compressor 3 Perform VW energization combination; when VT5 and VT2 are on and VT1, VT3, VT4, and VT6 are off, three-phase compressor 3 performs WU energization combination.
  • make the three-phase compressor perform a different energized winding combination from the last energized winding combination specifically includes: if the last energized winding combination of the three-phase compressor is a UV energized combination, then the three-phase compressor Perform VW energization combination; if the last energized winding combination of the three-phase compressor is a VW energization combination, make the three-phase compressor perform a WU energization combination; if the last energization winding combination of a three-phase compressor is a WU energization combination, make the three-phase The compressor performs UV energization combination.
  • the use order of the energization combination of the three-phase compressor is cycled in the manner of UV energization combination, VW energization combination and WU energization combination. If the UV energization combination is used for the first time, then continue to use the VW energization combination and WU energization combination in turn, and then cycle. If the VW energization combination is used for the first time, the WU energization combination and the UV energization combination will continue to be used in sequence afterwards, and the cycle will be repeated.
  • the UV energization combination and the VW energization combination will continue to be used in sequence afterwards, and the cycle will be repeated.
  • the use of the three-phase can be balanced, so that the three-phase ages uniformly, and the service life of the three-phase compressor is improved.
  • make the three-phase compressor perform a different energized winding combination from the last energized winding combination specifically includes: if the last energized winding combination of the three-phase compressor is a UV energized combination, then the three-phase compressor Perform WU energization combination; if the last energized winding combination of the three-phase compressor is a WU energization combination, make the three-phase compressor perform a VW energization combination; if the last energization winding combination of a three-phase compressor is a VW energization combination, make the three-phase The compressor performs UV energization combination.
  • the use sequence of the energization combination of the three-phase compressor is cycled in the manner of UV energization combination, WU energization combination and VW energization combination. If the UV energization combination is used for the first time, then continue to use the WU energization combination and the VW energization combination in turn, and then cycle. If the VW energization combination is used for the first time, then continue to use the UV energization combination and WU energization combination in turn, and then cycle. If the WU energization combination is used for the first time, then continue to use the VW energization combination and the UV energization combination in turn, and then cycle.
  • the use of the three-phase can be balanced, so that the three-phase ages uniformly, and the service life of the three-phase compressor is improved.
  • the three-phase compressor is made to perform the UV energization combination.
  • the three-phase compressor can also be made to perform the VW energization combination. Or WU power-on combination.
  • the technical scheme of the present invention will be further explained with a specific embodiment below.
  • the three-phase compressor is connected to the DC bus through a three-phase inverter, and the controller is connected to the three-phase inverter to control the switching action of the three-phase inverter.
  • the memory (ROM) of the controller can store the energized winding combination each time the three-phase compressor is heated.
  • the three-phase compressor will perform a VW energization combination this time, if it is read as a VW energization combination, the three-phase compressor will perform a WU energization combination this time. If the WU energization combination is read, the three-phase compressor executes the UV energization combination this time. If no energized winding combination is read, the three-phase compressor executes the UV energization combination this time. After performing the current energization combination, record the current energization combination and record it in the memory (ROM) of the controller.
  • ROM memory

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

A double-phase winding power-on heating method of a three-phase compressor (3). The method comprises the steps: acquiring a last power-on winding combination of the three-phase compressor (3); and on the basis of an acquired result, enabling the three-phase compressor (3) to execute a power-on winding combination different from the last power-on winding combination. According to the method, use of all phases of the three-phase compressor (3) can be balanced, such that the three phases of the three-phase compressor (3) are averagely aged, and the service life of the three-phase compressor (3) is prolonged.

Description

三相压缩机的双相绕组通电加热方法Electric heating method for two-phase winding of three-phase compressor 技术领域Technical field
本发明属于压缩机技术领域，具体提供一种三相压缩机的双相绕组通电加热方法。The invention belongs to the technical field of compressors, and specifically provides a two-phase winding energization heating method of a three-phase compressor.
背景技术Background technique
压缩机的加热方式主要有以下三种：电辅助加热带加热、利用绕组铜损加热以及利用绕组铁损加热。电辅助加热带加热是给压缩机增加一个外置电加热带，通过给加热带供电进行加热；利用绕组铜损加热是向压缩机绕组施加一个大电流，通过绕组自身电阻产生热量即铜损，该方式存在能耗过大及功率模块发热的问题，尤其对于功率较大的压缩机，因其绕组电阻太小，该方式实现困难；绕组铁损加热较之前的两种加热方式，具有能耗低、发热量高和可靠性高等优点，绕组铁损加热是在压缩机的两相施加高频交流电压，增加压缩机铁磁材料的磁滞损耗和涡流损耗，实现绕组加热的目的，驱动模块和压缩机都是三相的，在正常运行时三相会全部使用，而在加热时只用其中两相，因此加热用到的两相更容易老化，降低了装置的使用寿命。There are three main heating methods for compressors: electric auxiliary heating belt heating, heating by winding copper loss, and heating by winding iron loss. Electric auxiliary heating belt heating is to add an external electric heating belt to the compressor, which is heated by supplying power to the heating belt; the use of winding copper loss heating is to apply a large current to the compressor winding, and heat is generated by the winding resistance, which is copper loss. This method has the problems of excessive energy consumption and heat generation of the power module, especially for compressors with larger power, because the winding resistance is too small, this method is difficult to achieve; winding iron loss heating has energy consumption compared with the previous two heating methods Low, high calorific value and high reliability. Winding iron loss heating is to apply high-frequency AC voltage to the two phases of the compressor to increase the hysteresis loss and eddy current loss of the compressor's ferromagnetic material to achieve the purpose of winding heating, driving the module Both the compressor and the compressor are three-phase. During normal operation, all three phases are used, and only two of the phases are used for heating. Therefore, the two phases used for heating are more likely to age and reduce the service life of the device.
因此，本领域需要一种新的三相压缩机的双相绕组通电加热方法来解决上述问题。Therefore, a new energized heating method for two-phase windings of a three-phase compressor is needed in the art to solve the above-mentioned problems.
发明内容Summary of the invention
为了解决现有技术中的上述问题，即为了解决现有压缩机采用绕组铁损加热方式时由于只用到其中两相而导致该两相更容易老化的问题，本发明提供了一种三相压缩机的双相绕组通电加热方法，该方法包括：获取三相压缩机上次的通电绕组组合；根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合。In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem that only two of the phases are used when the existing compressor adopts the winding iron loss heating method, the two phases are more prone to aging, the present invention provides a three-phase The two-phase winding energization heating method of the compressor includes: obtaining the last energized winding combination of the three-phase compressor; according to the obtained result, making the three-phase compressor execute a different energized winding combination from the last energized winding combination.
在上述方法的优选技术方案中，“根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括： 如果三相压缩机上次的通电绕组组合为UV通电组合，则使三相压缩机执行VW通电组合。In the preferred technical solution of the above method, the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: If the last energized winding combination of the three-phase compressor is UV The energization combination makes the three-phase compressor perform VW energization combination.
在上述方法的优选技术方案中，“根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：如果三相压缩机上次的通电绕组组合为VW通电组合，则使三相压缩机执行WU通电组合。In the preferred technical solution of the above method, the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding combination of the three-phase compressor is VW The energization combination makes the three-phase compressor perform WU energization combination.
在上述方法的优选技术方案中，“根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：如果三相压缩机上次的通电绕组组合为WU通电组合，则使三相压缩机执行UV通电组合。In the preferred technical solution of the above method, the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding combination of the three-phase compressor is WU The energization combination enables the three-phase compressor to perform the UV energization combination.
在上述方法的优选技术方案中，“根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：如果三相压缩机上次的通电绕组组合为UV通电组合，则使三相压缩机执行WU通电组合。In the preferred technical solution of the above method, the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding combination of the three-phase compressor is UV The energization combination makes the three-phase compressor perform WU energization combination.
在上述方法的优选技术方案中，“根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：如果三相压缩机上次的通电绕组组合为WU通电组合，则使三相压缩机执行VW通电组合。In the preferred technical solution of the above method, the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding combination of the three-phase compressor is WU The energization combination makes the three-phase compressor perform VW energization combination.
在上述方法的优选技术方案中，“根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：如果三相压缩机上次的通电绕组组合为VW通电组合，则使三相压缩机执行UV通电组合。In the preferred technical solution of the above method, the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding combination of the three-phase compressor is VW The energization combination enables the three-phase compressor to perform the UV energization combination.
在上述方法的优选技术方案中，“根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：如果未获取到三相压缩机上次的通电绕组组合，则使三相压缩机执行UV通电组合。In the preferred technical solution of the above method, the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding of the three-phase compressor is not obtained Combination, the three-phase compressor performs UV energization combination.
在上述方法的优选技术方案中，“根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：如果未获取到三相压缩机上次的通电绕组组合，则使三相压缩机执行VW通电组合。In the preferred technical solution of the above method, the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding of the three-phase compressor is not obtained Combination, the three-phase compressor performs VW energization combination.
在上述方法的优选技术方案中，“根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：如果未获取到三相压缩机上次的通电绕组组合，则使三相压缩机执行WU通电组合。In the preferred technical solution of the above method, the step of "make the three-phase compressor execute a different energized winding combination from the last energized winding combination according to the obtained result" specifically includes: if the last energized winding of the three-phase compressor is not obtained Combination, the three-phase compressor performs WU energization combination.
本领域技术人员能够理解的是，在本发明的优选技术方案中，通过获取三相压缩机上次的通电绕组组合，然后根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合，通过这样的设置，可以平衡三相压缩机的所有相的使用，使得三相压缩机的三相平均老化，提高三相压缩机的使用寿命。Those skilled in the art can understand that in the preferred technical solution of the present invention, the last energized winding combination of the three-phase compressor is obtained, and then according to the obtained result, the three-phase compressor is made to perform a different combination from the last energized winding combination. The energized winding combination can balance the use of all phases of the three-phase compressor through such a setting, so that the three-phases of the three-phase compressor are averagely aged, and the service life of the three-phase compressor is improved.
附图说明Description of the drawings
图1是本发明的三相压缩机的双相绕组通电加热方法的流程图；Figure 1 is a flow chart of the two-phase winding energized heating method of the three-phase compressor of the present invention;
图2是本发明的三相压缩机与三相逆变器的连接示意图；Figure 2 is a schematic diagram of the connection between the three-phase compressor and the three-phase inverter of the present invention;
图3是本发明的三相压缩机的双相绕组通电加热方法实施例的流程图。Fig. 3 is a flow chart of an embodiment of the method for energizing the two-phase winding of the three-phase compressor of the present invention.
具体实施方式Detailed ways
下面参照附图来描述本发明的优选实施方式。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。The preferred embodiments of the present invention will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.
需要说明的是，在本发明的描述中，术语“第一”、“第二”和“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。It should be noted that in the description of the present invention, the terms "first", "second" and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.
基于背景技术指出的现有压缩机采用绕组铁损加热方式时由于只用到其中两相而导致该两相更容易老化的问题，本发明提供了一种三相压缩机的双相绕组通电加热方法，旨在平衡三相压缩机的所有相的使用，使得三相压缩机的三相平均老化，提高三相压缩机的使用寿命。Based on the problem that when the existing compressor adopts the winding iron loss heating method, the two phases are more prone to aging due to the fact that the two phases are more easily aging when the existing compressor adopts the winding iron loss heating method, the present invention provides a two-phase winding energized heating for a three-phase compressor The method aims to balance the use of all phases of the three-phase compressor, so that the three phases of the three-phase compressor are averagely aged, and the service life of the three-phase compressor is improved.
具体地，如图1所示，本发明的三相压缩机的双相绕组通电加热方法包括：获取三相压缩机上次的通电绕组组合；根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合。其中，获取结果可以为检测到上次的通电绕组组合，也可以为未检测到上次的 通电绕组组合，如果结果为检测到上次的通电绕组组合，说明压缩机之前进行过绕组加热，如果结果为未检测到上次的通电绕组组合，说明压缩机可能是首次进行绕组加热，或者之前的数据清空。以三相压缩机的三相分别为U相、V相和W相进行示例性说明，如图2所示，三相压缩机3通过三相逆变器2与直流母线1连接，三相逆变器2包括彼此串联的第一正极侧开关组件(包括并联的VT1和VD1)和第一负极侧开关组件(包括并联的VT2和VD2)、彼此串联的第二正极侧开关组件(包括并联的VT3和VD3)和第二负极侧开关组件(包括并联的VT4和VD4)、彼此串联的第三正极侧开关组件(包括并联的VT5和VD5)和第三负极侧开关组件(包括并联的VT6和VD6)，第一至第三正极侧开关组件的第一端与直流母线的正极连接，第一至第三正极侧开关组件的第二端与所述第一至第三负极侧开关组件的第一端连接，三相压缩机3的三相绕组分别连接到三组正负极开关组件之间(具体为三相压缩机3的U相接入第一正极侧开关组件与第一负极侧开关组件之间，三相压缩机3的V相接入第二正极侧开关组件与第二负极侧开关组件之间，三相压缩机3的W相接入第三正极侧开关组件与第三负极侧开关组件之间)，第一至第三负极侧开关组件的第二端与直流母线的负极连接。当VT1和VT4导通且VT2、VT3、VT5和VT6关断时，三相压缩机3执行UV通电组合；当VT3和VT6导通且VT1、VT2、VT4和VT5关断时，三相压缩机3执行VW通电组合；当VT5和VT2导通且VT1、VT3、VT4和VT6关断时，三相压缩机3执行WU通电组合。Specifically, as shown in FIG. 1, the two-phase winding energization heating method of the three-phase compressor of the present invention includes: obtaining the last energized winding combination of the three-phase compressor; Different combinations of energized windings. Among them, the obtained result can be that the last energized winding combination is detected, or the last energized winding combination is not detected. If the result is that the last energized winding combination is detected, it means that the compressor has performed winding heating before. The result is that the last energized winding combination is not detected, indicating that the compressor may be heating the windings for the first time, or the previous data may be cleared. Take the three phases of the three-phase compressor as U-phase, V-phase and W-phase for example. As shown in Figure 2, the three-phase compressor 3 is connected to the DC bus 1 through the three-phase inverter 2, and the three-phase reverse The converter 2 includes a first positive side switch component (including parallel VT1 and VD1) and a first negative side switch component (including parallel VT2 and VD2) connected in series with each other, and a second positive side switch component (including parallel connected VT3 and VD3) and the second negative side switch component (including parallel VT4 and VD4), the third positive side switch component (including parallel VT5 and VD5) and the third negative side switch component (including parallel VT6 and VD4) connected in series with each other VD6), the first ends of the first to third positive side switch components are connected to the positive pole of the DC bus, and the second ends of the first to third positive side switch components are connected to the first to third negative side switch components. One end is connected, and the three-phase windings of the three-phase compressor 3 are respectively connected between the three sets of positive and negative switch assemblies (specifically, the U-phase of the three-phase compressor 3 is connected to the first positive side switch assembly and the first negative side switch Between the components, the V phase of the three-phase compressor 3 is connected between the second positive side switch assembly and the second negative side switch assembly, and the W phase of the three-phase compressor 3 is connected between the third positive side switch assembly and the third negative electrode. Between the side switch components), the second ends of the first to third negative side switch components are connected to the negative pole of the DC bus. When VT1 and VT4 are turned on and VT2, VT3, VT5 and VT6 are turned off, the three-phase compressor 3 performs the UV energization combination; when VT3 and VT6 are turned on and VT1, VT2, VT4 and VT5 are turned off, the three-phase compressor 3 Perform VW energization combination; when VT5 and VT2 are on and VT1, VT3, VT4, and VT6 are off, three-phase compressor 3 performs WU energization combination.
实施例一Example one
“根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：如果三相压缩机上次的通电绕组组合为UV通电组合，则使三相压缩机执行VW通电组合；如果三相压缩机上次的通电绕组组合为VW通电组合，则使三相压缩机执行WU通电组合；如果三相压缩机上次的通电绕组组合为WU通电组合，则使三相压缩机执行UV通电组合。也就是说，三相压缩机的通电组合的使用顺序按照UV通电组合、VW通电组合和WU通电组合的方式循环。如果首次使用UV通电组合，后面则依次继续使用VW通电组合和WU通电组合，并以此循环。如果首次使用VW通电组合，后面则依次继续使用 WU通电组合和UV通电组合，并以此循环。如果首次使用WU通电组合，后面则依次继续使用UV通电组合和VW通电组合，并以此循环。通过这样的循环使用方式，可以平衡三相的使用，使得三相均匀老化，提高三相压缩机的使用寿命。"According to the obtained results, make the three-phase compressor perform a different energized winding combination from the last energized winding combination" specifically includes: if the last energized winding combination of the three-phase compressor is a UV energized combination, then the three-phase compressor Perform VW energization combination; if the last energized winding combination of the three-phase compressor is a VW energization combination, make the three-phase compressor perform a WU energization combination; if the last energization winding combination of a three-phase compressor is a WU energization combination, make the three-phase The compressor performs UV energization combination. That is to say, the use order of the energization combination of the three-phase compressor is cycled in the manner of UV energization combination, VW energization combination and WU energization combination. If the UV energization combination is used for the first time, then continue to use the VW energization combination and WU energization combination in turn, and then cycle. If the VW energization combination is used for the first time, the WU energization combination and the UV energization combination will continue to be used in sequence afterwards, and the cycle will be repeated. If the WU energization combination is used for the first time, the UV energization combination and the VW energization combination will continue to be used in sequence afterwards, and the cycle will be repeated. Through such a recycling method, the use of the three-phase can be balanced, so that the three-phase ages uniformly, and the service life of the three-phase compressor is improved.
实施例二Example two
“根据获取结果，使三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：如果三相压缩机上次的通电绕组组合为UV通电组合，则使三相压缩机执行WU通电组合；如果三相压缩机上次的通电绕组组合为WU通电组合，则使三相压缩机执行VW通电组合；如果三相压缩机上次的通电绕组组合为VW通电组合，则使三相压缩机执行UV通电组合。也就是说，三相压缩机的通电组合的使用顺序按照UV通电组合、WU通电组合和VW通电组合的方式循环。如果首次使用UV通电组合，后面则依次继续使用WU通电组合和VW通电组合，并以此循环。如果首次使用VW通电组合，后面则依次继续使用UV通电组合和WU通电组合，并以此循环。如果首次使用WU通电组合，后面则依次继续使用VW通电组合和UV通电组合，并以此循环。通过这样的循环使用方式，可以平衡三相的使用，使得三相均匀老化，提高三相压缩机的使用寿命。"According to the obtained results, make the three-phase compressor perform a different energized winding combination from the last energized winding combination" specifically includes: if the last energized winding combination of the three-phase compressor is a UV energized combination, then the three-phase compressor Perform WU energization combination; if the last energized winding combination of the three-phase compressor is a WU energization combination, make the three-phase compressor perform a VW energization combination; if the last energization winding combination of a three-phase compressor is a VW energization combination, make the three-phase The compressor performs UV energization combination. That is to say, the use sequence of the energization combination of the three-phase compressor is cycled in the manner of UV energization combination, WU energization combination and VW energization combination. If the UV energization combination is used for the first time, then continue to use the WU energization combination and the VW energization combination in turn, and then cycle. If the VW energization combination is used for the first time, then continue to use the UV energization combination and WU energization combination in turn, and then cycle. If the WU energization combination is used for the first time, then continue to use the VW energization combination and the UV energization combination in turn, and then cycle. Through such a recycling method, the use of the three-phase can be balanced, so that the three-phase ages uniformly, and the service life of the three-phase compressor is improved.
在上述的实施例一和实施例二中，如果未获取到三相压缩机上次的通电绕组组合，则使三相压缩机执行UV通电组合，当然，也可以使三相压缩机执行VW通电组合或者WU通电组合。In the first and second embodiments above, if the last energized winding combination of the three-phase compressor is not obtained, the three-phase compressor is made to perform the UV energization combination. Of course, the three-phase compressor can also be made to perform the VW energization combination. Or WU power-on combination.
下面结合一个具体的实施例来进一步阐述本发明的技术方案，三相压缩机通过三相逆变器与直流母线连接，控制器与三相逆变器连接以控制三相逆变器的开关动作，控制器的存储器(ROM)可以存储每次三相压缩机加热时的通电绕组组合，如图3所示，从ROM的相应地址读取三相压缩机上次的通电绕组组合，判断是否读取到上次的通电绕组组合，如果读取到为UV通电组合，则三相压缩机本次执行VW通电组合，如果读取到为VW通电组合，则三相压缩机本次执行WU通电组合，如果读取到为WU通电组合，则三相压缩机本次执行UV通电组合，如果未读取到任何通电绕组组合，则三相压缩机本次执行UV通电组合。 在执行完本次的通电组合后，将本次的通电组合进行记录，记录在控制器的存储器(ROM)中。The technical scheme of the present invention will be further explained with a specific embodiment below. The three-phase compressor is connected to the DC bus through a three-phase inverter, and the controller is connected to the three-phase inverter to control the switching action of the three-phase inverter. , The memory (ROM) of the controller can store the energized winding combination each time the three-phase compressor is heated. As shown in Figure 3, read the last energized winding combination of the three-phase compressor from the corresponding address of the ROM to determine whether to read To the last energized winding combination, if it is read that it is a UV energization combination, the three-phase compressor will perform a VW energization combination this time, if it is read as a VW energization combination, the three-phase compressor will perform a WU energization combination this time. If the WU energization combination is read, the three-phase compressor executes the UV energization combination this time. If no energized winding combination is read, the three-phase compressor executes the UV energization combination this time. After performing the current energization combination, record the current energization combination and record it in the memory (ROM) of the controller.
至此，已经结合附图所示的优选实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, those skilled in the art will readily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (10)

  1. 一种三相压缩机的双相绕组通电加热方法，其特征在于，所述方法包括：An energized heating method for two-phase windings of a three-phase compressor, characterized in that the method includes:
    获取所述三相压缩机上次的通电绕组组合；Obtaining the last energized winding combination of the three-phase compressor;
    根据获取结果，使所述三相压缩机执行与上次的通电绕组组合不同的通电绕组组合。According to the obtained result, the three-phase compressor is made to execute a energized winding combination different from the previous energized winding combination.
  2. 根据权利要求1所述的方法，其特征在于，“根据获取结果，使所述三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：The method according to claim 1, wherein the step of "according to the obtained result, causing the three-phase compressor to execute a different energized winding combination from the previous energized winding combination" specifically includes:
    如果所述三相压缩机上次的通电绕组组合为UV通电组合，则使所述三相压缩机执行VW通电组合。If the last energized winding combination of the three-phase compressor is a UV energized combination, the three-phase compressor is made to perform a VW energized combination.
  3. 根据权利要求1所述的方法，其特征在于，“根据获取结果，使所述三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：The method according to claim 1, wherein the step of "according to the obtained result, causing the three-phase compressor to execute a different energized winding combination from the previous energized winding combination" specifically includes:
    如果所述三相压缩机上次的通电绕组组合为VW通电组合，则使所述三相压缩机执行WU通电组合。If the last energized winding combination of the three-phase compressor is a VW energized combination, the three-phase compressor is made to perform a WU energized combination.
  4. 根据权利要求1所述的方法，其特征在于，“根据获取结果，使所述三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：The method according to claim 1, wherein the step of "according to the obtained result, causing the three-phase compressor to execute a different energized winding combination from the previous energized winding combination" specifically includes:
    如果所述三相压缩机上次的通电绕组组合为WU通电组合，则使所述三相压缩机执行UV通电组合。If the last energized winding combination of the three-phase compressor is a WU energized combination, the three-phase compressor is made to perform the UV energized combination.
  5. 根据权利要求1所述的方法，其特征在于，“根据获取结果，使所述三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：The method according to claim 1, wherein the step of "according to the obtained result, causing the three-phase compressor to execute a different energized winding combination from the previous energized winding combination" specifically includes:
    如果所述三相压缩机上次的通电绕组组合为UV通电组合，则使所述三相压缩机执行WU通电组合。If the last energized winding combination of the three-phase compressor is a UV energized combination, the three-phase compressor is made to perform a WU energized combination.
  6. 根据权利要求1所述的方法，其特征在于，“根据获取结果，使所述三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：The method according to claim 1, wherein the step of "according to the obtained result, causing the three-phase compressor to execute a different energized winding combination from the previous energized winding combination" specifically includes:
    如果所述三相压缩机上次的通电绕组组合为WU通电组合，则使所述三相压缩机执行VW通电组合。If the last energized winding combination of the three-phase compressor is a WU energized combination, the three-phase compressor is made to perform a VW energized combination.
  7. 根据权利要求1所述的方法，其特征在于，“根据获取结果，使所述三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：The method according to claim 1, wherein the step of "according to the obtained result, causing the three-phase compressor to execute a different energized winding combination from the previous energized winding combination" specifically includes:
    如果所述三相压缩机上次的通电绕组组合为VW通电组合，则使所述三相压缩机执行UV通电组合。If the last energized winding combination of the three-phase compressor is a VW energized combination, the three-phase compressor is made to perform a UV energized combination.
  8. 根据权利要求1所述的方法，其特征在于，“根据获取结果，使所述三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：The method according to claim 1, wherein the step of "according to the obtained result, causing the three-phase compressor to execute a different energized winding combination from the previous energized winding combination" specifically includes:
    如果未获取到所述三相压缩机上次的通电绕组组合，则使所述三相压缩机执行UV通电组合。If the last energized winding combination of the three-phase compressor is not obtained, the three-phase compressor is made to perform the UV energization combination.
  9. 根据权利要求1所述的方法，其特征在于，“根据获取结果，使所述三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：The method according to claim 1, wherein the step of "according to the obtained result, causing the three-phase compressor to execute a different energized winding combination from the previous energized winding combination" specifically includes:
    如果未获取到所述三相压缩机上次的通电绕组组合，则使所述三相压缩机执行VW通电组合。If the last energized winding combination of the three-phase compressor is not obtained, the three-phase compressor is made to perform the VW energization combination.
  10. 根据权利要求1所述的方法，其特征在于，“根据获取结果，使所述三相压缩机执行与上次的通电绕组组合不同的通电绕组组合”的步骤具体包括：The method according to claim 1, wherein the step of "according to the obtained result, causing the three-phase compressor to execute a different energized winding combination from the previous energized winding combination" specifically includes:
    如果未获取到所述三相压缩机上次的通电绕组组合，则使所述三相压缩机执行WU通电组合。If the last energized winding combination of the three-phase compressor is not obtained, the three-phase compressor is made to perform the WU energization combination.
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