6533b862fe1ef96bd12c7547
RESEARCH PRODUCT
Using Pulse Density Modulation to Improve the Efficiency of IGBT Inverters in Induction Heating Applications
J. M. MagranerVicente EsteveEnrique J. DedeC. CasesJose JordanEsteban Sanchis-kildersEnrique Masetsubject
Materials scienceInduction heatingbusiness.industryElectrical engineeringElectronic engineeringInverterInsulated-gate bipolar transistorbusinessPulse-density modulationResonant inverterVoltagePower controlPower (physics)description
This paper analyses 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 made with IGBT and the power control based on pulse density modulation (PDM). This power control strategy allows that the inverter works close to the resonance frequency for all output power levels. In this situation zero-voltage switching (ZVS) and zero-current switching (ZCS) conditions are performed and the switching losses are minimized. The results are verified experimentally using a prototype for induction hardening applications. A comparative study between the PDM and the classical frequency power control will be made.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-01-01 | 2007 IEEE Power Electronics Specialists Conference |