WO2021107280A1 - 인버터 제어장치 - Google Patents

인버터 제어장치 Download PDF

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Publication number
WO2021107280A1
WO2021107280A1 PCT/KR2020/003604 KR2020003604W WO2021107280A1 WO 2021107280 A1 WO2021107280 A1 WO 2021107280A1 KR 2020003604 W KR2020003604 W KR 2020003604W WO 2021107280 A1 WO2021107280 A1 WO 2021107280A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
command
unit
current
inverter
Prior art date
Application number
PCT/KR2020/003604
Other languages
English (en)
French (fr)
Korean (ko)
Inventor
이학준
최승철
Original Assignee
엘에스일렉트릭 주식회사
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 엘에스일렉트릭 주식회사 filed Critical 엘에스일렉트릭 주식회사
Priority to CN202080082392.4A priority Critical patent/CN114766078A/zh
Publication of WO2021107280A1 publication Critical patent/WO2021107280A1/ko

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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
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/22—Current control, e.g. using a current control loop
    • 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
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • 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
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/0085—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for high speeds, e.g. above nominal speed
    • H02P21/0089—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for high speeds, e.g. above nominal speed using field weakening
    • 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
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters

Definitions

  • the output power of the motor is limited by the maximum output voltage and current that the inverter can supply to the motor.
  • the output voltage of the inverter is limited by the size of the DC link voltage and the output voltage synthesis method, and the current is usually limited by the allowable thermal rating of the inverter or motor.
  • the device of an embodiment of the present invention for controlling an inverter that converts a DC voltage and outputs it to an electric motor receives a command torque and a command voltage to set the magnitude of the output voltage in the weak magnetic flux region a control unit for outputting a command current that can be maintained in a stable manner; a current control unit for outputting the command voltage by proportionally and integrally controlling the command current and the output current of the motor; and a first coordinate conversion unit that converts the command voltage into three phases and provides the converted voltage to the inverter.
  • the limit size is, ( is the DC voltage) may be set in the range of 90 to 95%.
  • 'first' and 'second' may be used to describe various elements, but the elements should not be limited by the above terms. The above term may be used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a 'first component' may be referred to as a 'second component', and similarly, a 'second component' may also be referred to as a 'first component'. can Also, the singular expression includes the plural expression unless the context clearly dictates otherwise. Unless otherwise defined, terms used in the embodiments of the present invention may be interpreted as meanings commonly known to those of ordinary skill in the art.
  • the inverter control device 1 includes a control unit 10, a magnetic flux control unit 15, and a current control unit 20 for receiving a command torque and performing weak magnetic flux control and voltage control. ), a dynamic characteristic improving unit 25 , coordinate transformation units 30 , 35 , 40 , 50 , 55 , 60 , and an overmodulation unit 45 .
  • the over-modulation unit 45 of an embodiment of the present invention extends the linearity of the output voltage with respect to the command voltage by maximizing the inverter output voltage in the over-modulation section. Unlike the conventional method of instantaneously correcting the command voltage, In consideration of one cycle time unit, the over-modulation method for maintaining the switching state is modified to generate the over-modulation command voltage.
  • 12C shows the torque-speed performance curve of the conventional method
  • 12A shows the torque-speed performance curve when overmodulation and weak magnetic flux control are performed
  • 12B shows the torque when the weak magnetic flux control is performed.
  • It shows the speed performance curve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
PCT/KR2020/003604 2019-11-27 2020-03-16 인버터 제어장치 WO2021107280A1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202080082392.4A CN114766078A (zh) 2019-11-27 2020-03-16 逆变器控制装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020190154478A KR20210065572A (ko) 2019-11-27 2019-11-27 인버터 제어장치
KR10-2019-0154478 2019-11-27

Publications (1)

Publication Number Publication Date
WO2021107280A1 true WO2021107280A1 (ko) 2021-06-03

Family

ID=76130309

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2020/003604 WO2021107280A1 (ko) 2019-11-27 2020-03-16 인버터 제어장치

Country Status (3)

Country Link
KR (1) KR20210065572A (zh)
CN (1) CN114766078A (zh)
WO (1) WO2021107280A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120079978A (ko) * 2011-01-06 2012-07-16 홍익대학교 산학협력단 공간전압 ｐｗｍ 과변조 제어 방법 및 그 장치
KR20130005190A (ko) * 2011-07-05 2013-01-15 엘에스산전 주식회사 매입형 영구자석 동기 전동기의 구동장치
JP2015119565A (ja) * 2013-12-18 2015-06-25 株式会社東芝 インバータ装置、及び、インバータ制御方法
WO2015131182A1 (en) * 2014-02-28 2015-09-03 Atieva, Inc. Induction motor flux and torque control
CN108599651A (zh) * 2018-05-15 2018-09-28 华中科技大学 基于虚拟电压注入的感应电机无速度传感器驱动控制方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120079978A (ko) * 2011-01-06 2012-07-16 홍익대학교 산학협력단 공간전압 ｐｗｍ 과변조 제어 방법 및 그 장치
KR20130005190A (ko) * 2011-07-05 2013-01-15 엘에스산전 주식회사 매입형 영구자석 동기 전동기의 구동장치
JP2015119565A (ja) * 2013-12-18 2015-06-25 株式会社東芝 インバータ装置、及び、インバータ制御方法
WO2015131182A1 (en) * 2014-02-28 2015-09-03 Atieva, Inc. Induction motor flux and torque control
CN108599651A (zh) * 2018-05-15 2018-09-28 华中科技大学 基于虚拟电压注入的感应电机无速度传感器驱动控制方法

Also Published As

Publication number Publication date
KR20210065572A (ko) 2021-06-04
CN114766078A (zh) 2022-07-19

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