Title :
A half-bridge series resonant inverter for induction cookers using a novel FPGA-based control strategy
Author :
Tian, J. ; Berger, G. ; Reimann, T. ; Scherf, M. ; Petzoldt, J.
Author_Institution :
Dept. of Power Electron., Technische Univ. Ilmenau
Abstract :
Asymmetrical pulse width modulation (APWM) with frequency tracking control strategy is proposed for half bridge series resonant inverter for induction cookers, by which inverter is operated at zero-voltage-switching (ZVS) over wide load range. The FPGA-based full digital control system construction and operation are described. Steady state characteristics, such as normalized output power, turn-off current and average current through switches, are calculated. Some design considerations including selection of snubber capacitor, determination of dead time, ZVS boundary and presetting of phase-locked loop (PLL) are discussed. Finally, experiment results are given
Keywords :
bridge circuits; capacitors; digital control; field programmable gate arrays; frequency control; induction heating; phase locked loops; power engineering computing; resonant invertors; snubbers; switching convertors; zero voltage switching; FPGA-based full digital control system; PLL; ZVS boundary; asymmetrical pulse width modulation; frequency tracking control strategy; half-bridge series resonant inverter; induction cookers; phase-locked loop; snubber capacitor; steady state characteristics; zero-voltage-switching; Bridges; Digital control; Frequency modulation; Phase locked loops; Power generation; Pulse inverters; Pulse width modulation inverters; Resonant inverters; Steady-state; Zero voltage switching; Asymmetrical Pulse Width Modulation; FPGA; Frequency Tracking Control; Induction heating; Soft switching;
Conference_Titel :
Power Electronics and Applications, 2005 European Conference on
Conference_Location :
Dresden
Print_ISBN :
90-75815-09-3
DOI :
10.1109/EPE.2005.219397
