CN112901454A - Two-phase winding electrifying heating method of three-phase compressor - Google Patents
Two-phase winding electrifying heating method of three-phase compressor Download PDFInfo
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- CN112901454A CN112901454A CN201911221678.1A CN201911221678A CN112901454A CN 112901454 A CN112901454 A CN 112901454A CN 201911221678 A CN201911221678 A CN 201911221678A CN 112901454 A CN112901454 A CN 112901454A
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- phase compressor
- compressor
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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
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- 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
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- 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
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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
The invention belongs to the technical field of compressors and aims to solve the problem that two phases of the existing compressor are easy to age because only the two phases are used when the existing compressor adopts a winding iron loss heating mode. To this end, the present invention provides a method for heating a two-phase winding of a three-phase compressor by energization, the method comprising: acquiring a last energized winding combination of the three-phase compressor; according to the obtained result, the three-phase compressor is caused to perform a different energization winding combination from the last energization winding combination. The three-phase compressor can balance the use of all phases of the three-phase compressor, so that the three phases of the three-phase compressor are aged evenly, and the service life of the three-phase compressor is prolonged.
Description
Technical Field
The invention belongs to the technical field of compressors, and particularly provides a two-phase winding energization heating method of a three-phase compressor.
Background
The compressor is heated mainly in the following three ways: electric auxiliary heating belt heating, heating by utilizing winding copper loss and heating by utilizing winding iron loss. The electric auxiliary heating belt is used for heating by adding an external electric heating belt to the compressor and supplying power to the heating belt; the method has the problems of overlarge energy consumption and heating of a power module, and is difficult to realize especially for a compressor with larger power because the winding resistance is too small; compared with the two heating modes, the winding iron loss heating mode has the advantages of low energy consumption, high heat productivity, high reliability and the like, high-frequency alternating-current voltage is applied to two phases of the compressor to increase the hysteresis loss and the eddy-current loss of ferromagnetic materials of the compressor, the purpose of winding heating is realized, the driving module and the compressor are three-phase, three phases can be completely used in normal operation, and only two phases are used in heating, so that the two phases used for heating are more easily aged, and the service life of the device is shortened.
Therefore, there is a need in the art for a new method of two-phase winding energization heating for three-phase compressors to solve the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that two phases of the existing compressor are easy to age because only two phases of the existing compressor are used when the existing compressor adopts a winding iron loss heating mode, the invention provides a two-phase winding energization heating method of a three-phase compressor, which comprises the following steps: acquiring a last energized winding combination of the three-phase compressor; according to the obtained result, the three-phase compressor is caused to perform a different energization winding combination from the last energization winding combination.
In a preferred embodiment of the above method, the step of causing the three-phase compressor to execute a different energization winding combination from the last energization winding combination according to the obtained result specifically includes: and if the last energized winding combination of the three-phase compressor is the UV energized combination, enabling the three-phase compressor to execute the VW energized combination.
In a preferred embodiment of the above method, the step of causing the three-phase compressor to execute a different energization winding combination from the last energization winding combination according to the obtained result specifically includes: and if the last energized winding combination of the three-phase compressor is the VW energized combination, enabling the three-phase compressor to execute the WU energized combination.
In a preferred embodiment of the above method, the step of causing the three-phase compressor to execute a different energization winding combination from the last energization winding combination according to the obtained result specifically includes: if the last energization winding combination of the three-phase compressor was the WU energization combination, the three-phase compressor is caused to perform the UV energization combination.
In a preferred embodiment of the above method, the step of causing the three-phase compressor to execute a different energization winding combination from the last energization winding combination according to the obtained result specifically includes: and if the last energized winding combination of the three-phase compressor is the UV energized combination, enabling the three-phase compressor to execute the WU energized combination.
In a preferred embodiment of the above method, the step of causing the three-phase compressor to execute a different energization winding combination from the last energization winding combination according to the obtained result specifically includes: and if the last energized winding combination of the three-phase compressor is the WU energized combination, enabling the three-phase compressor to execute the VW energized combination.
In a preferred embodiment of the above method, the step of causing the three-phase compressor to execute a different energization winding combination from the last energization winding combination according to the obtained result specifically includes: and if the last energized winding combination of the three-phase compressor is the VW energized combination, enabling the three-phase compressor to perform the UV energized combination.
In a preferred embodiment of the above method, the step of causing the three-phase compressor to execute a different energization winding combination from the last energization winding combination according to the obtained result specifically includes: and if the last energized winding combination of the three-phase compressor is not acquired, enabling the three-phase compressor to execute UV energized combination.
In a preferred embodiment of the above method, the step of causing the three-phase compressor to execute a different energization winding combination from the last energization winding combination according to the obtained result specifically includes: and if the last electrified winding combination of the three-phase compressor is not acquired, enabling the three-phase compressor to execute the VW electrified combination.
In a preferred embodiment of the above method, the step of causing the three-phase compressor to execute a different energization winding combination from the last energization winding combination according to the obtained result specifically includes: and if the last energized winding combination of the three-phase compressor is not acquired, enabling the three-phase compressor to execute the WU energized combination.
As can be understood by those skilled in the art, in the preferred embodiment of the present invention, by acquiring the last energized winding combination of the three-phase compressor and then causing the three-phase compressor to perform a different energized winding combination from the last energized winding combination according to the acquired result, the use of all the phases of the three-phase compressor can be balanced, the three phases of the three-phase compressor can be aged evenly, and the service life of the three-phase compressor can be prolonged.
Drawings
FIG. 1 is a flow chart of a method of the present invention for energizing a two-phase winding of a three-phase compressor;
FIG. 2 is a schematic diagram of the connection of the three-phase compressor of the present invention to a three-phase inverter;
fig. 3 is a flow chart of an embodiment of a method of the present invention for energizing and heating the two-phase winding of a three-phase compressor.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that the terms "first," "second," and "third" in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Based on the problem that only two phases of the existing compressor are easy to age due to the fact that only two phases of the existing compressor are used when a winding iron loss heating mode is adopted in the prior art, the invention provides a two-phase winding electrifying heating method of a three-phase compressor, and aims to balance the use of all the phases of the three-phase compressor, so that the three phases of the three-phase compressor are aged averagely, and the service life of the three-phase compressor is prolonged.
Specifically, as shown in fig. 1, the method for heating by energization of a two-phase winding of a three-phase compressor of the present invention comprises: acquiring a last energized winding combination of the three-phase compressor; according to the obtained result, the three-phase compressor is caused to perform a different energization winding combination from the last energization winding combination. The obtaining result may be that the last energized winding combination is detected or that the last energized winding combination is not detected, if the last energized winding combination is detected, it indicates that the compressor has performed winding heating before, and if the last energized winding combination is not detected, it indicates that the compressor may perform winding heating for the first time or previous data is empty. Illustratively, three phases of the three-phase compressor are respectively a U-phase, a V-phase and a W-phase, as shown in fig. 2, the three-phase compressor 3 is connected to the dc bus 1 through the three-phase inverter 2, the three-phase inverter 2 includes a first positive side switch assembly (including parallel VT 56 1 and VD1) and a first negative side switch assembly (including parallel VT2 and VD2) connected to each other in series, a second positive side switch assembly (including parallel VT3 and VD3) and a second negative side switch assembly (including parallel VT4 and 829vd 4) connected to each other in series, a third positive side switch assembly (including parallel VT5 and VD5) and a third negative side switch assembly (including parallel VT6 and VD6) connected to each other in series, first ends of the first to third positive side switch assemblies are connected to a positive electrode of the dc bus, second ends of the first to third positive side switch assemblies are connected to first ends of the first to third negative side switch assemblies, the three-phase winding of three-phase compressor 3 is connected to between the positive and negative pole switch module of three groups respectively (specifically, the U phase of three-phase compressor 3 inserts between first positive pole side switch module and the first negative pole side switch module, the V phase of three-phase compressor 3 inserts between second positive pole side switch module and the second negative pole side switch module, the W phase of three-phase compressor 3 inserts between third positive pole side switch module and the third negative pole side switch module), the second end of first to third negative pole side switch module is connected with the negative pole of direct current bus. When VT1 and VT4 are on and VT2, VT3, VT5, and VT6 are off, the three-phase compressor 3 performs UV energization combination; when VT3 and VT6 are on and VT1, VT2, VT4, and VT5 are off, the three-phase compressor 3 performs VW energization combination; when VT5 and VT2 are on and VT1, VT3, VT4, and VT6 are off, the three-phase compressor 3 performs WU energization combining.
Example one
The step of causing the three-phase compressor to perform the energization winding combination different from the last energization winding combination according to the obtained result specifically includes: if the last energized winding combination of the three-phase compressor is the UV energized combination, enabling the three-phase compressor to execute the VW energized combination; if the last energized winding combination of the three-phase compressor is the VW energized combination, enabling the three-phase compressor to execute the WU energized combination; if the last energization winding combination of the three-phase compressor was the WU energization combination, the three-phase compressor is caused to perform the UV energization combination. That is, the order of use of the energization patterns of the three-phase compressor is cycled in the UV energization pattern, the VW energization pattern, and the WU energization pattern. If the UV power-on combination is used for the first time, then the VW power-on combination and the WU power-on combination are sequentially used and circulated. If the VW power-on combination is used for the first time, the WU power-on combination and the UV power-on combination are sequentially used and cycled. If the WU power-on combination is used for the first time, then the UV power-on combination and the VW power-on combination are sequentially used and circulated. Through such recycling mode, can balance the use of three-phase for the three-phase is ageing evenly, improves the life of three-phase compressor.
Example two
The step of causing the three-phase compressor to perform the energization winding combination different from the last energization winding combination according to the obtained result specifically includes: if the last energized winding combination of the three-phase compressor is the UV energized combination, enabling the three-phase compressor to execute the WU energized combination; if the last energized winding combination of the three-phase compressor is the WU energized combination, enabling the three-phase compressor to execute the VW energized combination; and if the last energized winding combination of the three-phase compressor is the VW energized combination, enabling the three-phase compressor to perform the UV energized combination. That is, the order of use of the energization patterns of the three-phase compressor is cycled by the UV energization pattern, the WU energization pattern, and the VW energization pattern. If the UV power-on combination is used for the first time, then the WU power-on combination and the VW power-on combination are sequentially used and circulated. If the VW power-on combination is used for the first time, then the UV power-on combination and the WU power-on combination are continued to be used in sequence and cycled accordingly. If the WU power-on combination is used for the first time, then the VW power-on combination and the UV power-on combination are sequentially used and circulated. Through such recycling mode, can balance the use of three-phase for the three-phase is ageing evenly, improves the life of three-phase compressor.
In the first and second embodiments described above, if the last energization winding combination of the three-phase compressor is not acquired, the three-phase compressor is caused to perform the UV energization combination, but of course, the three-phase compressor may be caused to perform the VW energization combination or the WU energization combination.
The technical solution of the present invention will be further explained with reference to a specific embodiment, in which a three-phase compressor is connected to a dc bus through a three-phase inverter, a controller is connected to the three-phase inverter to control the switching operation of the three-phase inverter, a memory (ROM) of the controller can store the energized winding combination every time the three-phase compressor is heated, as shown in fig. 3, the last energized winding combination of the three-phase compressor is read from the corresponding address of the ROM, it is determined whether the last energized winding combination is read, if the UV power-on combination is read, the three-phase compressor executes the VW power-on combination at this time, if the VW power-on combination is read, the three-phase compressor executes the WU power-on combination at this time, and if the WU power combination is read, the three-phase compressor executes the UV power combination at this time, and if any power winding combination is not read, the three-phase compressor executes the UV power combination at this time. After the current energization combination is executed, the current energization combination is recorded in a memory (ROM) of the controller.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A method of electrically heating a two-phase winding of a three-phase compressor, the method comprising:
acquiring a last energized winding combination of the three-phase compressor;
and according to the obtained result, enabling the three-phase compressor to execute different electrified winding combinations from the last electrified winding combination.
2. The method according to claim 1, wherein the step of causing, according to the obtained result, the three-phase compressor to perform a different energization winding combination from the last energization winding combination, specifically comprises:
if the last energized winding combination of the three-phase compressor is a UV energized combination, causing the three-phase compressor to perform a VW energized combination.
3. The method according to claim 1, wherein the step of causing, according to the obtained result, the three-phase compressor to perform a different energization winding combination from the last energization winding combination, specifically comprises:
and if the last energized winding combination of the three-phase compressor is a VW energized combination, enabling the three-phase compressor to execute WU energized combination.
4. The method according to claim 1, wherein the step of causing, according to the obtained result, the three-phase compressor to perform a different energization winding combination from the last energization winding combination, specifically comprises:
causing the three-phase compressor to perform a UV power-on-combine if the last power-on winding combination of the three-phase compressor was a WU power-on-combination.
5. The method according to claim 1, wherein the step of causing, according to the obtained result, the three-phase compressor to perform a different energization winding combination from the last energization winding combination, specifically comprises:
causing the three-phase compressor to perform WU power-on combining if the last power-on winding combination of the three-phase compressor was a UV power-on combination.
6. The method according to claim 1, wherein the step of causing, according to the obtained result, the three-phase compressor to perform a different energization winding combination from the last energization winding combination, specifically comprises:
if the last energized winding combination of the three-phase compressor is the WU energized combination, causing the three-phase compressor to perform a VW energized combination.
7. The method according to claim 1, wherein the step of causing, according to the obtained result, the three-phase compressor to perform a different energization winding combination from the last energization winding combination, specifically comprises:
causing the three-phase compressor to perform UV energization combining if the last energization winding combination of the three-phase compressor was a VW energization combination.
8. The method according to claim 1, wherein the step of causing, according to the obtained result, the three-phase compressor to perform a different energization winding combination from the last energization winding combination, specifically comprises:
and if the last energized winding combination of the three-phase compressor is not obtained, enabling the three-phase compressor to execute UV energized combination.
9. The method according to claim 1, wherein the step of causing, according to the obtained result, the three-phase compressor to perform a different energization winding combination from the last energization winding combination, specifically comprises:
and if the last electrified winding combination of the three-phase compressor is not obtained, enabling the three-phase compressor to execute a VW electrified combination.
10. The method according to claim 1, wherein the step of causing, according to the obtained result, the three-phase compressor to perform a different energization winding combination from the last energization winding combination, specifically comprises:
and if the last energized winding combination of the three-phase compressor is not obtained, enabling the three-phase compressor to execute WU energized combination.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911221678.1A CN112901454B (en) | 2019-12-03 | 2019-12-03 | Two-phase winding electrifying heating method of three-phase compressor |
| PCT/CN2020/131145 WO2021109898A1 (en) | 2019-12-03 | 2020-11-24 | Double-phase winding power-on heating method of three-phase compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911221678.1A CN112901454B (en) | 2019-12-03 | 2019-12-03 | Two-phase winding electrifying heating method of three-phase compressor |
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| Publication Number | Publication Date |
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| CN112901454A true CN112901454A (en) | 2021-06-04 |
| CN112901454B CN112901454B (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911221678.1A Active CN112901454B (en) | 2019-12-03 | 2019-12-03 | Two-phase winding electrifying heating method of three-phase compressor |
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| CN (1) | CN112901454B (en) |
| WO (1) | WO2021109898A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6114487A (en) * | 1984-06-28 | 1986-01-22 | Toshiba Corp | Heating by three-phase electrically driven compressor |
| CN202001259U (en) * | 2010-08-25 | 2011-10-05 | 艾默生环境优化技术(苏州)研发有限公司 | Three-phase compressor |
| WO2012049763A1 (en) * | 2010-10-15 | 2012-04-19 | 三菱電機株式会社 | Heat pump device, heat pump system, and method for controlling three-phase inverter |
| CN105353796A (en) * | 2015-11-27 | 2016-02-24 | 珠海格力电器股份有限公司 | Refrigeration equipment and heating control circuit and heating control method of compressor thereof |
| CN108005880A (en) * | 2017-10-31 | 2018-05-08 | 华为技术有限公司 | Compressor heating system and method |
| CN109058080A (en) * | 2018-08-13 | 2018-12-21 | 珠海格力电器股份有限公司 | A kind of method and device that compressor is heated using stator winding |
| CN110138311A (en) * | 2019-06-18 | 2019-08-16 | 宁波奥克斯电气股份有限公司 | A kind of compressor invariable power preheating control method, circuit and air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743059B (en) * | 2013-12-23 | 2016-08-17 | 广东美芝精密制造有限公司 | Air-conditioner and compressor thereof preheat control method, device |
-
2019
- 2019-12-03 CN CN201911221678.1A patent/CN112901454B/en active Active
-
2020
- 2020-11-24 WO PCT/CN2020/131145 patent/WO2021109898A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6114487A (en) * | 1984-06-28 | 1986-01-22 | Toshiba Corp | Heating by three-phase electrically driven compressor |
| CN202001259U (en) * | 2010-08-25 | 2011-10-05 | 艾默生环境优化技术(苏州)研发有限公司 | Three-phase compressor |
| WO2012049763A1 (en) * | 2010-10-15 | 2012-04-19 | 三菱電機株式会社 | Heat pump device, heat pump system, and method for controlling three-phase inverter |
| CN105353796A (en) * | 2015-11-27 | 2016-02-24 | 珠海格力电器股份有限公司 | Refrigeration equipment and heating control circuit and heating control method of compressor thereof |
| CN108005880A (en) * | 2017-10-31 | 2018-05-08 | 华为技术有限公司 | Compressor heating system and method |
| CN109058080A (en) * | 2018-08-13 | 2018-12-21 | 珠海格力电器股份有限公司 | A kind of method and device that compressor is heated using stator winding |
| CN110138311A (en) * | 2019-06-18 | 2019-08-16 | 宁波奥克斯电气股份有限公司 | A kind of compressor invariable power preheating control method, circuit and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112901454B (en) | 2022-08-19 |
| WO2021109898A1 (en) | 2021-06-10 |
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