This paper proposes a novel method based on pulse width modulation techniques to reduce and control the common-mode voltage in three-phase multilevel inverters. Besides controlling the common-mode voltage, this method is capable of controlling capacitors voltages and load currents with low switching losses and harmonic contents. In fact, due to the existence of different pulse patterns and the ...

A principle of using high-resolution digital voltmeters (DVs) HewlettPackard 3458A for the measurement of AC voltages in DCV range is described. The method of approximate synchronous sampling is used, having only one sample per cycle of a working frequency close to 16 Hz, when the mean value of one-third cycle is measured. The beginning of integration is shifted for the same interval for every ...