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In this paper, an analysis of the DC-link voltage ripple for classic and non-conventional Pulse Width Modulation (PWM) strategies such as the Unified-Double Carrier PWM (Uni-DC PWM) is derived. A focus will be held on the case where Film capacitors are applied. The latter have a very low Equivalent Series Resistance (ESR) which is responsible of losses in real capacitors (especially Electrolytic ones)...
This paper presents a numerical approach for determining the theoretical harmonic components of unconventional pulse width modulation (PWM) strategies such as the Unified-Double Carrier PWM (Uni-DC PWM). The method uses a double Fourier integral formulation to analyze the inverter DC-link current harmonic components, by establishing inner and outer integral limits of this formulation. The provided...
The major drawback of usual dual three-phase AC machines, when supplied by a Voltage Source Inverter (VSI), is the occurrence of extra harmonic currents which circulate in the stator windings causing additional losses and constraints on the power component. This paper compares dedicated Pulse Width Modulation (PWM) strategies used for controlling a dual three-phase Permanent Magnet Synchronous machine...
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