High output power high frequency resonant load inverters

Details High output power high frequency resonant load inverters High output power high frequency resonant load inverters

2005-01-11

2005-01-11

Nguyen, Matthew V. (Department: 2838)

Electric power conversion systems

Current conversion

Using semiconductor-type converter

C363S097000

Reexamination Certificate

active

06842355

ABSTRACT:
A new control strategy for IGBTs when used in high frequency (75 kHz-500 kHz) high power (10 kW-5 MW) inverters with series resonant load, a topology commonly used for induction heating. The strategy changes the IGBT strain elements into a total stress picture that fits the IGBP's behaviour and internal nature better. This makes the IGBT operate much more efficient, thus increasing the maximum output power from the inverter significantly compared to a standard control scheme. This makes the IGBT based inverter a much cheaper alternative than a MOSFET inverter, which has been state of the art for this application.

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