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

fYear

2009

Firstpage

1

Lastpage

9

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;

fLanguage

English

Publisher

ieee

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

Type

conf

Filename

5278839