KR960027211A - Inverter Compensation Time Compensation Device - Google Patents

Inverter Compensation Time Compensation Device Download PDF

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Publication number
KR960027211A
KR960027211A KR1019940033464A KR19940033464A KR960027211A KR 960027211 A KR960027211 A KR 960027211A KR 1019940033464 A KR1019940033464 A KR 1019940033464A KR 19940033464 A KR19940033464 A KR 19940033464A KR 960027211 A KR960027211 A KR 960027211A
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KR
South Korea
Prior art keywords
current
inverter
polarity
carrier frequency
phases
Prior art date
Application number
KR1019940033464A
Other languages
Korean (ko)
Inventor
김정빈
Original Assignee
이종수
Lg 산전주식회사
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 이종수, Lg 산전주식회사 filed Critical 이종수
Priority to KR1019940033464A priority Critical patent/KR960027211A/en
Publication of KR960027211A publication Critical patent/KR960027211A/en

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Abstract

본 발명은 인버터의 무효시간 보상장치에 관한 것으로 특히, 기존의 무효시간 보상장치내의 전류극성 검출부(6)와 PWM 발생 및 무효시간 보상부(7) 사이에 전류 극성 검출부(6)에서 출력되는 전류 중 제로 크로싱 부분에서의 케리어 주파수는 낮추어 주고 나머지 부분에서는 정상주파수로 출력시켜 주는 케리어 주파수 변조부(8)를 부가시켜 인버터의 무효시간 보상장치전류의 극성이 바뀌는 부분에서는 인버터의 스위칭 주파수를 낮추어 줌으로써 무효시간이 스위칭의 한 주기에 미치는 영향을 줄일 수 있을 뿐만 아니라, 전류의 극성 검출과는 상관없이 무효시간 보상과 같은 효과를 얻을 수 있어 제품의 신뢰도를 대폭 향상시킬 수 있는 것이다.The present invention relates to an invalid time compensating device of an inverter, in particular, a current output from the current polarity detecting part 6 between the current polarity detecting part 6 and the PWM generation and the invalid time compensating element in the existing invalid time compensating device. By lowering the carrier frequency in the zero crossing part and adding the carrier frequency modulator 8 for outputting the normal frequency in the remaining part, lowering the switching frequency of the inverter in the part where the polarity of the invalid time compensator current of the inverter is changed. In addition to reducing the effect of the dead time on one cycle of switching, it is possible to achieve the same effect as the dead time compensation irrespective of the polarity detection of the current, thereby greatly improving the reliability of the product.

Description

인버터의 무효시간 보상장치Inverter Compensation Time Compensation Device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래의 인버터 무효시간 보상장치 회로도, 제5도는 본 발명의 무효시간 보상장치 회로도.1 is a circuit diagram of a conventional inverter invalid time compensation device, Figure 5 is a circuit diagram of the invalid time compensation device of the present invention.

Claims (1)

직류링크(1)가 입력단에 구비되어 인버터 모터(4)에 소정의 전류를 출력시켜 주는 메인 스위칭 디바이스(2)와; 상기 메인 디바이스(2)의 출력전류에 상응하는 값을 구동되어 인버터 모터(4)와; 상기 인버터 모터의 3상 중 두상에 설치되어 각각에 흐르는 전류를 검출하는 변류기(3)와; 상기 변류기(3)를 통해 검출된 두상의 전류로 다른 한상의 전류를 검출해내는 전류검출부(5)와; 상기 전류검출부(5)의 출력신호를 통해 3상전류의 극성을 검출하는 전류극성 검출부(6)와; 검출 전류극성을 근거로 보상전압 보상신호를 발생시켜 주는 PWM 발생 및 무효시간 보상부(7)로 구성된 무효시간 보상장치에 있어서, 상기 전류극성 검출부(6)에서 출력되는 전류 중 체크 크로싱 부분에서의 케리어 주파수는 낮추어 주고 나머지 부분에서는 정상주파수로 출력시켜 주는 케리어 주파수 변조부(8)를 부가시켜서 된 것을 특징으로 하는 인버터의 무효시간 보상장치.A main switching device (2) provided with a DC link (1) at an input terminal for outputting a predetermined current to the inverter motor (4); An inverter motor 4 driven with a value corresponding to the output current of the main device 2; A current transformer (3) installed in two phases of the three phases of the inverter motor to detect a current flowing in each of the inverter motors; A current detector (5) for detecting the current of the other one phase with the current of the two phases detected through the current transformer (3); A current polarity detector (6) for detecting the polarity of the three-phase current through the output signal of the current detector (5); A dead time compensating device comprising a PWM generation and a dead time compensating unit (7) for generating a compensation voltage compensation signal based on a detected current polarity, wherein a check crossing portion of the current output from the current polarity detecting unit (6) A carrier frequency modulator (8) for lowering the carrier frequency and outputting the remaining frequency at the normal frequency is provided. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940033464A 1994-12-09 1994-12-09 Inverter Compensation Time Compensation Device KR960027211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940033464A KR960027211A (en) 1994-12-09 1994-12-09 Inverter Compensation Time Compensation Device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940033464A KR960027211A (en) 1994-12-09 1994-12-09 Inverter Compensation Time Compensation Device

Publications (1)

Publication Number Publication Date
KR960027211A true KR960027211A (en) 1996-07-22

Family

ID=66688438

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940033464A KR960027211A (en) 1994-12-09 1994-12-09 Inverter Compensation Time Compensation Device

Country Status (1)

Country Link
KR (1) KR960027211A (en)

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