Dispositivo inversor y acondicionador de aire

摘要

A rectification unit and a smoothing unit rectify and smooth the AC voltage from an AC power supply and generate a smooth voltage containing the waveform of a smooth voltage period corresponding to half the AC voltage period. A DC/AC conversion unit converts the smooth voltage to a drive voltage representing a pulse-width modulated alternating current, and supplies the drive voltage to a motor. A current detection unit detects the motor current flowing to the motor, which is current containing the waveform of the smooth voltage period and waveform distortion, and generates a current detection signal. A target speed setting unit generates a target speed signal representing the target speed of the motor. A current command generating unit generates a current command signal as a motor current control value based on the current detection signal and target speed signal. A current command correction generates a current command correction signal correcting waveform distortion based on the current detection signal and current command signal. A voltage command output means generates a voltage command signal based on the current detection signal, current command signal, and current command correction signal. A pulse width modulation signal generating means generates the pulse width modulation signal based on the voltage command signal.