POWER CONVERTER AND COOKING APPARATUS INCLUDING THE SAME

摘要

A power converter and a cooking apparatus including the same are disclosed. The power converter includes a switching unit to perform switching using a direct current (DC) voltage and to output an alternating current (AC) voltage, a driving unit to output a high-frequency voltage to a magnetron based on the AC voltage, an output voltage detector to detect an output voltage flowing to the magnetron, and a controller to calculate a frequency command value based on the detected output voltage, to generate a frequency command value by avoiding a resonance frequency when the calculated frequency command value corresponds to the resonance frequency, and to output the generated frequency command value to the switching unit. Therefore, it is possible to stably perform oscillation.

主权项

1. A power converter comprising:
a switching unit to perform a switching operation using a direct current (DC) voltage and to output an alternating current (AC) voltage; a driving unit to output a high-frequency voltage to a magnetron based on the AC voltage; an output voltage detector to detect an output voltage flowing to the magnetron; and a controller to calculate a frequency command value based on the detected output voltage, to generate a frequency command value, and to output the generated frequency command value to the switching unit, wherein the controller calculates an alternative frequency command value when the calculated frequency command value corresponds to a resonance frequency, and wherein the alternative frequency command value avoids the resonance frequency.