WO2022034674A1 - 電動機駆動装置および冷凍サイクル適用機器 - Google Patents

電動機駆動装置および冷凍サイクル適用機器 Download PDF

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Publication number
WO2022034674A1
WO2022034674A1 PCT/JP2020/030804 JP2020030804W WO2022034674A1 WO 2022034674 A1 WO2022034674 A1 WO 2022034674A1 JP 2020030804 W JP2020030804 W JP 2020030804W WO 2022034674 A1 WO2022034674 A1 WO 2022034674A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
load
torque
value
command value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/030804
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English (en)
French (fr)
Japanese (ja)
Inventor
慎也 豊留
和徳 畠山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2022542554A priority Critical patent/JP7361933B2/ja
Priority to PCT/JP2020/030804 priority patent/WO2022034674A1/ja
Publication of WO2022034674A1 publication Critical patent/WO2022034674A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/08—Arrangements for controlling the speed or torque of a single motor

Definitions

  • FIG. 6 is a diagram schematically showing a loss generated in the compressor in a cross-sectional view taken along the line 2B-2B shown in FIG. 2 of the compressor provided in the refrigeration cycle application device according to the present embodiment.
  • the figure which shows typically the process of sucking, compressing, and discharging the refrigerant in the cylinder of the compressor which concerns on this embodiment.
  • the figure which shows the load torque in the electric motor of the compressor which concerns on this embodiment, and the timing of the loss which occurs in a compressor.
  • the figure which shows the structural example of the electric motor drive device which concerns on this embodiment The figure which shows the structural example of the inverter provided in the electric motor drive device which concerns on this embodiment.
  • the rectifier circuit 3 includes four diodes D1, D2, D3, and D4.
  • the four diodes D1 to D4 are bridge-connected to form a diode bridge circuit.
  • the rectifier circuit 3 rectifies the AC voltage supplied from the AC power supply 1 by a diode bridge circuit composed of four diodes D1 to D4.
  • one end of the input terminal is connected to the AC power supply 1 via the reactor 2, and the other end of the input terminal is connected to the AC power supply 1. Further, in the rectifier circuit 3, the output terminal is connected to the smoothing capacitor 5.
  • the bus voltage detection unit 10 detects the voltage between the DC bus 12a and 12b as the bus voltage Vdc .
  • the bus voltage detection unit 10 includes, for example, a voltage dividing circuit that divides the voltage by a resistance connected in series.
  • the bus voltage detection unit 10 converts the detected bus voltage Vdc into a voltage suitable for processing by the control device 100 using a voltage dividing circuit, for example, a voltage of 5 V or less, and uses it as a voltage detection signal which is an analog signal.
  • Output to the control device 100 The voltage detection signal output from the bus voltage detection unit 10 to the control device 100 is converted from an analog signal to a digital signal by an AD (Analog to Digital) conversion unit (not shown) in the control device 100, and is internally processed by the control device 100. Used for.
  • AD Analog to Digital
  • FIG. 8 is a diagram showing a configuration example of a control device 100 included in the motor drive device 200 according to the present embodiment.
  • the control device 100 includes an operation control unit 102 and an inverter control unit 110.
  • FIG. 9 is a diagram showing a configuration example of the voltage command value calculation unit 115 included in the control device 100 according to the present embodiment.
  • the voltage command value calculation unit 115 includes a frequency estimation unit 501, a speed control unit 502, a load torque estimation unit 503, a compensation value calculation unit 504, an addition unit 505, a subtraction unit 506, 507, and an excitation current control unit. 508 and a torque current control unit 509 are provided.
  • the subtraction unit 506 calculates the difference (i ⁇ * ⁇ i ⁇ ) of the exciting current i ⁇ with respect to the exciting current command value i ⁇ * .
  • the subtraction unit 507 calculates the difference (i ⁇ ** ⁇ i ⁇ ) of the torque current i ⁇ with respect to the second torque current command value i ⁇ ** .
  • the switching elements 311 to 316 of the inverter main circuit 310 As the switching elements 311 to 316 of the inverter main circuit 310, it is assumed that an IGBT (Insulated Gate Bipolar Transistor), a MOSFET (Metal Oxide Semiconductor Device Transistor), or the like can be performed, but switching can be performed. Any element may be used as long as it is a simple element.
  • the switching elements 311 to 316 are MOSFETs, the MOSFET has a parasitic diode due to its structure, so that the same effect can be obtained without connecting the rectifying elements 321 to 326 for circulation in antiparallel. Can be done.
  • the compensation value calculation unit 504 accelerates the motor 7 when the load torque T load exceeds the first threshold value, and decelerates the motor 7 when the load torque T load exceeds the second threshold value.
  • the torque current compensation value i ⁇ _trq * is calculated as described above.
  • the compensation value calculation unit 504 calculates the first threshold value and the second threshold value based on the load torque T load estimated in the control up to the previous time.
  • the compensation value calculation unit 504 may use the latest load torque T load as the load torque T load estimated in the control up to the previous time, or may use the average value of the load torque T load for a plurality of times including the latest. May be good.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
PCT/JP2020/030804 2020-08-13 2020-08-13 電動機駆動装置および冷凍サイクル適用機器 Ceased WO2022034674A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2022542554A JP7361933B2 (ja) 2020-08-13 2020-08-13 電動機駆動装置および冷凍サイクル適用機器
PCT/JP2020/030804 WO2022034674A1 (ja) 2020-08-13 2020-08-13 電動機駆動装置および冷凍サイクル適用機器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/030804 WO2022034674A1 (ja) 2020-08-13 2020-08-13 電動機駆動装置および冷凍サイクル適用機器

Publications (1)

Publication Number Publication Date
WO2022034674A1 true WO2022034674A1 (ja) 2022-02-17

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PCT/JP2020/030804 Ceased WO2022034674A1 (ja) 2020-08-13 2020-08-13 電動機駆動装置および冷凍サイクル適用機器

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Country Link
JP (1) JP7361933B2 (https=)
WO (1) WO2022034674A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024047930A1 (ja) * 2022-08-29 2024-03-07 パナソニックＩｐマネジメント株式会社 同期機制御装置、圧縮システム、冷凍サイクル装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011151880A (ja) * 2010-01-19 2011-08-04 Daikin Industries Ltd 温度異常判断装置
WO2017212794A1 (ja) * 2016-06-08 2017-12-14 三菱電機株式会社 交流電動機の速度推定装置、交流電動機の駆動装置、冷媒圧縮機および冷凍サイクル装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011151880A (ja) * 2010-01-19 2011-08-04 Daikin Industries Ltd 温度異常判断装置
WO2017212794A1 (ja) * 2016-06-08 2017-12-14 三菱電機株式会社 交流電動機の速度推定装置、交流電動機の駆動装置、冷媒圧縮機および冷凍サイクル装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024047930A1 (ja) * 2022-08-29 2024-03-07 パナソニックＩｐマネジメント株式会社 同期機制御装置、圧縮システム、冷凍サイクル装置
EP4583397A4 (en) * 2022-08-29 2025-11-26 Panasonic Ip Man Co Ltd Synchronous machine control device, compression system and refrigeration circuit device

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JPWO2022034674A1 (https=) 2022-02-17
JP7361933B2 (ja) 2023-10-16

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