2022 article
Soft-Switching dv/dt Filter with Ultra High Power Density and 50% Power Loss Savings for 150 kW SiC Motor Drives
2022 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE).
author keywords: active dv/dt filter; soft-switching; motor drive; air-core inductor; auxiliary resonant commutated pole
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(Web of Science; OpenAlex)
Source: Web Of Science
Added: November 20, 2023
This paper presents a SiC-based soft-switching dv/dt filter using a parallel inductor to achieve ultra-high efficiency and limit the output dv/dt below 6V/ns for high-power motor drive applications. All main SiC devices are switched with the fastest speed and minimized switching loss due to the zero-voltage-switching under any input/output voltage and load conditions. The filter inductor RMS current is reduced by 86% using an inductor in parallel instead of in series with the load. The proposed matrix solenoid air-core filter inductor with near field leakage flux cancellation increases the energy density by two times compared to the toroidal shape. Compared to the motor drives with passive dv/dt filters, the total power loss of the motor drive with the soft-switching dv/dt filter is reduced by 50%, and the dv/dt filter volume reduction is by 90%. Simulation and experimental results and comparisons demonstrate the feasibility and advantages of the soft-switching dv/dt filter.