Title :
Improved induction-heating inverter with power factor correction
Author :
Calleja, Hugo ; Ordóñez, Rafael
Author_Institution :
Cenidet-Electron., Cuernavaca, Mexico
Abstract :
An inverter aimed at induction heating applications is presented. It features power factor correction and fast response to sudden changes in the load, while providing the capability to vary the power supplied to the load. Power variation is achieved by means of pulse density modulation using variable-length sequences; thus allowing a high number of power levels to be achieved. The minimum quality factor necessary to make the harmonic spectrum independent of the modulation is also specified; this ensures that most of the power transferred to the load will be at the resonant frequency
Keywords :
Q-factor; induction heating; invertors; power factor correction; pulse modulation; fast response; harmonic spectrum; induction-heating inverter; minimum quality factor; power factor correction; power levels; power variation; pulse density modulation; resonant frequency; sudden load changes; variable-length sequences; Capacitors; Power factor correction; Power generation; Power harmonic filters; Power system harmonics; Pulse modulation; Resonance; Resonant frequency; Resonant inverters; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
0-7803-5421-4
DOI :
10.1109/PESC.1999.785654
