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Wide bandgap semiconductor switches have been increasingly utilized to improve the power density and efficiency of power converters, as such devices are able to operate at very high frequencies, e.g., up to 100 MHz, with reduced power losses. However, such a high-frequency operation may impose a challenge to the digital control system, and the system clock frequency should be up to 100 GHz in high-precision...
To meet the requirement of continuous reactive power compensation with low cost, high reliability and large capacity, a hybrid dynamic reactive power compensation system was proposed based on TSC (thyristor switched capacitor in parallel) and SVG (static var compensator). This system consisting of discrete subsystem TSC and continuous subsystem SVG, coordinated the capacitor switching rating of TSC...
This paper presents the optimal pulsewidth modulation (PWM) schemes suitable for controlling a nine-switch inverter. Modulation wise, references with smallest offsets added are preferred for common frequency in-phase operation because of its lowest influence in harmonic performance. But for the common frequency operation with phase shift needed, traditional zero sequence harmonic offset cannot increase...
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