KR960028698A - Inverter output control circuit of resonant high frequency heating device - Google Patents

Inverter output control circuit of resonant high frequency heating device Download PDF

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Publication number
KR960028698A
KR960028698A KR1019940040466A KR19940040466A KR960028698A KR 960028698 A KR960028698 A KR 960028698A KR 1019940040466 A KR1019940040466 A KR 1019940040466A KR 19940040466 A KR19940040466 A KR 19940040466A KR 960028698 A KR960028698 A KR 960028698A
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KR
South Korea
Prior art keywords
output control
high frequency
control circuit
switching
inverter output
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Application number
KR1019940040466A
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Korean (ko)
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KR100301463B1 (en
Inventor
노희석
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이헌조
주식회사 금성사
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Priority to KR1019940040466A priority Critical patent/KR100301463B1/en
Publication of KR960028698A publication Critical patent/KR960028698A/en
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Publication of KR100301463B1 publication Critical patent/KR100301463B1/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/04—Sources of current
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Inverter Devices (AREA)
  • Induction Heating Cooking Devices (AREA)

Abstract

본 발명은 공진형 고주파 가열장치의 인버터 출력 제어회로에 관한 것으로, 종래에는 2석식 인버터 회로로서, 현재 일정주파수의 PWM 출력제어기술의 적용이 곤란하고, 인버터 회로에서 처리할 수 있는 부하의 용량이 제한되어 있으며 또한, 인버터 제어시에 발생하는 잡음등에 의해 주변기기와 상호 전자간섭이 발생할 가능성이 많은 문제점이 있었다. 이러한 점을 개선하기 위한 본 발명은 전력 제어시 일정한 주파수로 유지하여 펄스폭 변조를 수행하므로써 광범위한 전력제어가 가능하고 또한, 일정 주파수에서 전력제어가 가능하므로 주변 기기와의 상호 전자기 간섭을 방지할 수 있어 시스템이 안정적으로 동작하도록 구성한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inverter output control circuit of a resonant high frequency heating apparatus. In the related art, as a two-seat inverter circuit, it is difficult to apply a PWM output control technique of a constant frequency at present, and the capacity of a load that can be processed in the inverter circuit In addition, there is a problem that there is a lot of possibility of mutual interference with the peripheral device due to noise generated during the inverter control. The present invention to improve this point is to maintain a constant frequency at the time of power control to perform a wide range of power control by performing a pulse width modulation, and to control the power at a constant frequency can prevent mutual electromagnetic interference with peripheral devices The system is configured to work stably.

Description

공진형 고주파 가열장치의 인버터 출력 제어회로Inverter output control circuit of resonant high frequency heating device

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

제1도는 종래의 인버터 출력 제어회로도, 제2도는 제1도에서 모드에 따른 파형도, 제3도는 본 발명의 인버터 출력 제어회로도, 제4도는 제4도에서 모드에 따른 동작을 보인 예시도, 제5도는 제4도에서 모드에 따른 파형도.FIG. 1 is a conventional inverter output control circuit diagram, FIG. 2 is a waveform diagram according to a mode in FIG. 1, FIG. 3 is an inverter output control circuit diagram of the present invention, FIG. 4 is an exemplary diagram showing operation according to a mode in FIG. 5 is a waveform diagram according to the mode in FIG.

Claims (4)

펄스폭 변조 방식의 공진형 인버터에 있어서, 상용 교류전원을 정류시키는 정류 수단과, 상기 정류된 전압에서 고주파 전류성분을 제거하는 필터링 수단과, 구동 신호에 의해 상기 필터링 수단을 통과한 전류를 스위칭하는 스위칭 수단과, 이 스위칭 수단의 역저지 전압을 영전압 이하로 낮추고 시비율(Da = Ta/To)의 변화폭을 확장하여 공진함에 의해 유도 기전력을 발생시키는 가열수단으로 구성함을 특징으로 하는 공진형 고주파 가열장치의 인버터 출력 제어회로.A resonant inverter of a pulse width modulation method, comprising: rectifying means for rectifying a commercial AC power source, filtering means for removing a high frequency current component from the rectified voltage, and switching a current passing through the filtering means by a drive signal A switching means and a heating means for generating induced electromotive force by lowering the reverse blocking voltage of the switching means below zero voltage and resonating by expanding the variation range of the ratio (Da = Ta / To). Inverter output control circuit of high frequency heating device. 제1항에 있어서, 스위칭 수단은 스위칭 소자(SWa)를 다이오드(Dla)를 통해 다이오드(Dlb)가 병렬 접속된 스위칭 소자(SWb)에 직렬 접속하고 상기 다이오드(Dla)와 스위칭 소자(SWb)의 접속점을 가열수단에 접속하여 구성한 것을 특징으로 하는 공진형 고주파 가열장치의 인버터 출력 제어회로.The switching device of claim 1, wherein the switching means serially connects the switching element SWa to the switching element SWb in which the diode Dlb is connected in parallel through the diode Dla, and the switching element SWa is connected to the switching element SWb. An inverter output control circuit for a resonant high frequency heating apparatus comprising a connection point connected to a heating means. 제2항에 있어서, 다이오드(Dla)는 시비율(Da = Ta/To)의 변화폭을 확장하는 것을 특징으로 하는 공진형 고주파 가열장치의 인버터 출력 제어회로.3. The inverter output control circuit according to claim 2, wherein the diode (Dla) extends the variation range of the ratio (Da = Ta / To). 제1항에 있어서, 가열수단은 스위칭 수단에 접속된 가열 코일(Lr)의 일측 단자에 콘덴서(Cla)를 접속하고 그 타측 단자에 다이오드(D2)가 병렬접속된 콘덴서(Clb)를 접속한 것을 특징으로 하는 공진형 고주파 가열장치의 인버터 출력 제어회로.2. The heating means according to claim 1, wherein the heating means connects the capacitor Cla to one terminal of the heating coil Lr connected to the switching means and the capacitor Clb connected in parallel with the diode D2 to the other terminal thereof. Inverter output control circuit of the resonance type high frequency heating device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940040466A 1994-12-31 1994-12-31 Circuit for controlling inverter output of resonance-type high frequency heating apparatus KR100301463B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940040466A KR100301463B1 (en) 1994-12-31 1994-12-31 Circuit for controlling inverter output of resonance-type high frequency heating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940040466A KR100301463B1 (en) 1994-12-31 1994-12-31 Circuit for controlling inverter output of resonance-type high frequency heating apparatus

Publications (2)

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KR960028698A true KR960028698A (en) 1996-07-22
KR100301463B1 KR100301463B1 (en) 2001-10-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110662320A (en) * 2019-09-24 2020-01-07 东莞市双平电源技术有限公司 Composite resonance heating circuit and frequency control method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3204518B2 (en) * 1991-07-12 2001-09-04 松下電器産業株式会社 Induction heating cooker
JP3257017B2 (en) * 1992-03-12 2002-02-18 松下電器産業株式会社 Induction heating cooker
JP3394273B2 (en) * 1992-06-04 2003-04-07 松下電器産業株式会社 Induction heating cooker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110662320A (en) * 2019-09-24 2020-01-07 东莞市双平电源技术有限公司 Composite resonance heating circuit and frequency control method thereof

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