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Analysis of transition mode from phase-shift to zero phase-shift under ZVS and NON-ZVS operation for induction heating inverter
(2008-01-01)
Viriya, Pichetjamroen
;
Yongyuth, Naras
;
MatSUSe, Kouki
This paper proposes an analysis of transition mode from phase-shift to zero phase-shift under ZVS and NON-ZVS operations for a series resonant inverter with the load of induction heating. A number of circuit operations during transition mode from phase-shift to zero phase-shift under ZVS and NON-ZVS conditions are first analyzed. Various voltage and current equations of the operating circuits are then obtained and used for calculation of the waveforms by the aid of MATLAB program. The calculated waveforms make possible the consideration of some important circuit parameters that are used to determine ZVS or NON-ZVS conditions. The theoretical results and proposed method are also verified by experimental ones, using a prototype test set in our laboratory. © 2008 The Institute of Electrical Engineers of Japan.
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Analysis of a full-bridge inverter for induction heating using asymmetrical phase-shift control under ZVS and NON-ZVS operation
(2007-12-01)
Yongyuth, N.
;
Viriya, P.
;
Matsuse, K.
This paper presents a detailed analysis of circuit operation under ZVS and NON-ZVS switching conditions in a high-frequency full-bridge inverter for induction heating, using the principle of asymmetrical phase-shift control over a wide control range both in positive and negative directions. A variety of modes of circuit operation with the voltage and current equations during phase-shift power control under the operating conditions of ZVS and NON-ZVS are analyzed as a first step and the output voltage and current waveforms are obtained by MATLAB program. These waveforms will be analyzed by Fourier analysis which can lead further to the calculation of ac output power P<inf>o</inf>, dc input power P<inf>d</inf>, and hence the conversion efficiency η of the full-bridge inverter. The analysis results shows that the control ranges of ac output power P<inf>o</inf> and dc input power P<inf>d</inf> are limited by the occurrence of NON-ZVS operating condition, which changes according to the switching frequency f<inf>s</inf>. © 2007 IEEE.
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Analysis of a half-bridge inverter for a small-size induction cooker using positive-negative phase-shift control under ZVS and NON-ZVS operation
(2007-12-01)
Achara, P.
;
Viriya, P.
;
Matsuse, K.
This paper presents a detailed analysis of circuit operation under ZVS and NON-ZVS conditions in a high-frequency half-bridge inverter for a small-size and low-voltage induction cooker, using the principle of positivenegative phase-shift control over a wide control range both in positive and negative directions. A variety of modes of circuit operation with the voltage and current equations during phase-shift power control under the operating conditions of ZVS and NON-ZVS are analyzed as a first step and the output voltage and current waveforms are obtained by MATLAB program. These waveforms will be analyzed by Fourier analysis which can lead further to the calculation of ac output power P<inf>0</inf>, dc input power P<inf>d</inf>, and hence the conversion efficiency η of the half-bridge inverter. The analysis results shows that the control ranges of ac output power P<inf>0</inf> and dc input power P<inf>d</inf> are limited by the occurrence of NON-ZVS operating condition, which changes according to the switching frequency f<inf>s</inf>. © 2007 IEEE.
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Analysis of transition mode from phase shift to zero-phase shift under ZVS and NON-ZVS operation for induction heating inverter
(2007-10-01)
Viriya, P.
;
Yongyuth, N.
;
Matsuse, K.
This paper proposes an analysis of transition mode from phase shift to zero-phase shift under ZVS and NON-ZVS operation for a series resonant inverter with the load of induction heating. A number of circuit operation during transition mode from phase shift to zero-phase shift under ZVS and NON-ZVS conditions are first analyzed. Various voltage and current equations of the operating circuits are then obtained and used for calculation of the waveforms by the aid of MATLAB program. The calculated waveforms make possible the consideration of some important circuit parameters that are used to determine ZVS or NON-ZVS conditions. The theoretical results and proposed method are also verified by experimental ones, using a prototype test set in our laboratory. © 2007 IEEE.
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Analysis of circuit operation under ZVS and NON-ZVS conditions in phase-shift inverter for induction heating
(2006-01-01)
Viriya, Pichetjamroen
;
Yongyuth, Naras
;
Miki, Ichiro
;
Matsuse, Kouki
This paper presents a detailed analysis of circuit operation under ZVS and NON-ZVS conditions in a full-bridge high-frequency phase-shift control series resonant MOSFET inverter with the load of induction heating. Various modes of circuit operation both under ZVS and NON-ZVS conditions are first analyzed in details. The voltage and current equations of these circuits are then obtained and used for calculation of the waveforms by MATLAB program. The calculated results can lead to the consideration of various circuit parameters that determine ZVS or NON-ZVS operating conditions. The theoretical results are also verified by experimental ones, using a prototype test set rated at 3 kW.

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