| 摘要 |
PURPOSE:To reduce the load regulation by providing inverter drive control means for outputting harmonic pulse width modulation waveform for erasing the harmonic component near a resonance frequency of a booster transformer in an inverter. CONSTITUTION:A drive controller of an inverter 3 is composed so that the output of the inverter 3 becomes a PWM waveform that a plurality of harmonic waves near the resonance frequency in a booster transformer 4 are erased. Thus, a memory which stores in advance a control waveform is provided in an inverter drive controller, and the inverter 3 may be driven in accordance with the stored content. |
