JPWO2021210129A5 - - Google Patents

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JPWO2021210129A5
JPWO2021210129A5 JP2022514949A JP2022514949A JPWO2021210129A5 JP WO2021210129 A5 JPWO2021210129 A5 JP WO2021210129A5 JP 2022514949 A JP2022514949 A JP 2022514949A JP 2022514949 A JP2022514949 A JP 2022514949A JP WO2021210129 A5 JPWO2021210129 A5 JP WO2021210129A5
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Japan
Prior art keywords
motor
zero
current control
drive device
speed
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JP2022514949A
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Japanese (ja)
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JP7258235B2 (en
JPWO2021210129A1 (en
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Priority claimed from PCT/JP2020/016722 external-priority patent/WO2021210129A1/en
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Publication of JPWO2021210129A5 publication Critical patent/JPWO2021210129A5/ja
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Description

本開示に係る駆動装置は、
負荷に接続されたモータの結線状態を切替える結線切替装置と、電力源に接続され、前記モータに交流電圧を出力するインバータとを備える駆動装置において、
前記モータの電流をゼロに制御する電流ゼロ制御の期間中に前記結線状態が切替えられ、かつ前記電流ゼロ制御の開始時の前記モータの速度が閾値以上であり、
前記インバータの出力電流をＩ１とし、
前記モータのトルク定数をＫｔとし、
前記電流ゼロ制御の期間の長さをＴ０とし、
前記モータの軸イナーシャをＪｍ
とするとき、前記閾値ω０は、
ω０≧Ｉ１・Ｋｔ・Ｔ０／Ｊｍ
を満たすように定められる。 The drive device according to the present disclosure is
In a drive device including a connection switching device for switching the connection state of a motor connected to a load and an inverter connected to a power source and outputting an AC voltage to the motor.
The connection state is switched during the period of zero current control for controlling the current of the motor to zero, and the speed of the motor at the start of the zero current control is equal to or higher than the threshold value .
The output current of the inverter is I1.
Let Kt be the torque constant of the motor.
The length of the period of the zero current control is set to T0.
Jm the shaft inertia of the motor
When, the threshold value ω0 is
ω0 ≧ I1, Kt, T0 / Jm
It is determined to meet .

Claims (6)

負荷に接続されたモータの結線状態を切替える結線切替装置と、電力源に接続され、前記モータに交流電圧を出力するインバータとを備える駆動装置において、
前記モータの電流をゼロに制御する電流ゼロ制御の期間中に前記結線状態が切替えられ、かつ前記電流ゼロ制御の開始時の前記モータの速度が閾値以上であり、
前記インバータの出力電流をＩ１とし、
前記モータのトルク定数をＫｔとし、
前記電流ゼロ制御の期間の長さをＴ０とし、
前記モータの軸イナーシャをＪｍ
とするとき、前記閾値ω０は、
ω０≧Ｉ１・Ｋｔ・Ｔ０／Ｊｍ
を満たすように定められる
駆動装置。 In a drive device including a connection switching device for switching the connection state of a motor connected to a load and an inverter connected to a power source and outputting an AC voltage to the motor.
The connection state is switched during the period of zero current control for controlling the current of the motor to zero, and the speed of the motor at the start of the zero current control is equal to or higher than the threshold value .
The output current of the inverter is I1.
Let Kt be the torque constant of the motor.
The length of the period of the zero current control is set to T0.
Jm the shaft inertia of the motor
When, the threshold value ω0 is
ω0 ≧ I1, Kt, T0 / Jm
A drive that is determined to meet . 前記モータの速度が前記閾値未満である場合、前記モータの速度が前記閾値以上となるように加速制御を行った後に前記電流ゼロ制御を開始する請求項１に記載の駆動装置。 The drive device according to claim 1 , wherein when the speed of the motor is less than the threshold value, acceleration control is performed so that the speed of the motor becomes equal to or higher than the threshold value, and then the zero current control is started. 前記電流ゼロ制御の終了後に、
前記電流ゼロ制御の開始時の前記モータの速度から前記電流ゼロ制御の期間中における前記モータの速度の低下量の推定値を減じた値を初期速度として通常運転制御に復帰する請求項１又は２に記載の駆動装置。 After the end of the zero current control,
Claim 1 or 2 to return to the normal operation control with the value obtained by subtracting the estimated value of the decrease in the speed of the motor during the period of the zero current control from the speed of the motor at the start of the zero current control as the initial speed. The drive device described in. 前記電流ゼロ制御において、前記インバータのスイッチング素子のオンオフ動作により前記インバータの出力電流をゼロに制御する請求項１から３のいずれか１項に記載の駆動装置。 The drive device according to any one of claims 1 to 3 , wherein in the current zero control, the output current of the inverter is controlled to zero by the on / off operation of the switching element of the inverter. 前記電流ゼロ制御においては、前記インバータのスイッチング素子をすべてオフする請求項１から４のいずれか１項に記載の駆動装置。 The drive device according to any one of claims 1 to 4 , wherein in the zero current control, all the switching elements of the inverter are turned off. 請求項１から５のいずれか１項に記載の駆動装置と、前記モータと、前記モータによって駆動される圧縮要素とを備え、前記圧縮要素によって冷凍サイクルの冷媒を圧縮する空気調和装置。 An air conditioner comprising the drive device according to any one of claims 1 to 5 , the motor, and a compression element driven by the motor, and compressing the refrigerant of the refrigeration cycle by the compression element.
JP2022514949A 2020-04-16 2020-04-16 Drive system and air conditioner Active JP7258235B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/016722 WO2021210129A1 (en) 2020-04-16 2020-04-16 Drive device and air conditioning device

Publications (3)

Publication Number Publication Date
JPWO2021210129A1 JPWO2021210129A1 (en) 2021-10-21
JPWO2021210129A5 true JPWO2021210129A5 (en) 2022-06-15
JP7258235B2 JP7258235B2 (en) 2023-04-14

Family

ID=78083573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2022514949A Active JP7258235B2 (en) 2020-04-16 2020-04-16 Drive system and air conditioner

Country Status (3)

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JP (1) JP7258235B2 (en)
CN (1) CN115398796A (en)
WO (1) WO2021210129A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2023214453A1 (en) * 2022-05-02 2023-11-09
WO2024075318A1 (en) * 2022-10-07 2024-04-11 住友電気工業株式会社 Coil switching system for vehicle motor, control device, method for controlling vehicle motor, and computer program
WO2024185339A1 (en) * 2023-03-03 2024-09-12 住友電気工業株式会社 Control device, winding switching system, vehicle, control method, and control program

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7033958B2 (en) 2018-03-02 2022-03-11 株式会社日立製作所 Rotating machine drive system
US11594993B2 (en) 2018-07-18 2023-02-28 Mitsubishi Electric Corporation Rotary machine controller, refrigerant compressor, refrigeration cycle system, and air conditioner
CN112438017B (en) 2018-07-26 2023-11-14 三菱电机株式会社 Motor driving device and refrigeration cycle application equipment

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