Title :
Stabilization of the DC-link for inverters with PDM power control
Author :
Esteve, V. ; Dede, E.J. ; Jordán, J. ; Cases, C. ; Herrero, R. ; Magraner, J.M. ; Sanchis-Kilders, E. ; Maset, E.
Author_Institution :
Dept. of Electron. Eng., Univ. of Valencia, Burjassot, Spain
Abstract :
This paper analyses the behaviour of the DC-link of a high power (50 kW), high frequency (150 kHz) voltage fed inverter with a series resonant load circuit for industrial induction heating applications which is characterized by a full bridge inverter with a power control based on pulse density modulation (PDM). The operation of this power control strategy can cause large oscillations of the voltage at the input of the inverter due to its discontinuous operation and the inductances and the capacitances of the circuit. A design method based on simulation results is presented. The results are verified experimentally using a prototype for induction hardening applications.
Keywords :
induction heating; power control; resonant invertors; DC link stabilization; frequency 150 kHz; full bridge inverter; industrial induction heating applications; power 50 kW; power control; pulse density modulation; series resonant load circuit; voltage fed inverter; Bridge circuits; Capacitance; Frequency; Industrial control; Power control; Pulse circuits; Pulse inverters; Pulse modulation; RLC circuits; Resonance; Harmonics; High frequency power converters; Induction heating; Pulsed power converter; Resonant converter;
Conference_Titel :
Power Electronics and Applications, 2009. EPE '09. 13th European Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-4432-8
Electronic_ISBN :
978-90-75815-13-9
