Induction heater

Details Induction heater Induction heater

H - Electricity

05

B

H05B 6/06 (2006.01) H05B 6/04 (2006.01) H02M 7/48 (2006.01)

Patent

CA 2093139

2093139 9304566 PCTABS00020 An induction heater comprises a coupled pair of inverters and an induction head for generating heat, coupled to the second inverter. The first inverter operates at a constant frequency, but the total output current is controlled through pulse width modulation. The output current is rectified and provided as a DC input voltage, proportional to the total output current of the first inverter, to the second inverter. The second inverter operates at an adjustable frequency which is selected by the user to optimize heating. The power delivered to the induction heater is dependent on the output voltage of the second inverter, which is dependent on the input voltage to the second inverter, and the output current of the first inverter.

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