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Three-phase single-stage boost inverter requires narrow pulses, thus a low resolution DSP can cause some pulse droppings which results in asymmetries in the output waveforms of the boost inverter. This leads to an increase in the total harmonic distortion (THD) of the output waveforms. In order to solve this problem, a modified version of the phasor pulse width modulation (PPWM) switching pattern...
This paper presents the SPMC topology which offers many advantages with unrestricted switch control or with minimal reactive device use, as an all silicon solution. It elucidates the implementation of SPMC as an inverter and as a Controlled Rectifier. Also, with proper switching control algorithm, a type of converter that can buck and boost with step-changed frequency called a Single-Phase Z-Source...
Turn off behaviour of power MOSFETS with quasi-clamped inductive switching (QIS) loads is analysed. In most real applications the main inductive load is clamped during turn off but there is enough unclamped inductance in the circuit to cause voltage spikes and avalanche breakdown. This is the QIS situation and occurs in almost all practical circuits from motor drives to inverters to VRMs. Analytical...
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