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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 new pulse width modulation (PWM) strategy, called extended double carrier PWM, for a two-level voltage source inverter aiming at reducing the RMS current flowing through dc link filtering capacitors on embedded systems over a large modulation index range and for high-power factor loads ( ). Instead of utilizing two adjacent active vectors at each switching...
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