Question

1. The effect of single- and three-phase diode rectifiers on harmonics, distortion and ripple.
2. Variable-frequency converters for induction motor drives.
3. The impacts of non-sinusoidal excitation on induction motor.
4. The principles of three-phase sine-triangle PWM-modulator. Describe the properties of such a modulator in its linear, overmodulation and square wave areas. Which harmonics are presents in each case?
5. Benefits of resonant converters. Describe one resonant converter.

Answer 1

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