LARGE-GOOD QUALITY VFD CONTROL PANELS FOR POWER-ECONOMICAL SPEED REGULATION IN UAE

voltage pulses of different lengths to simulate a sinusoidal wave. Preferably, the pulses are timed so that the time common integral with the drive yields an ideal sinusoid. The current method of alternative to provide this waveform operates a triangle wave and sine wave via a comparator, and outputs a voltage pulse Every time the sine wave’s ben