Abstract
Due to the fast-switching process in DC-DC converters, electromagnetic interference (EMI) is created and affects the performance of the converters used in electric vehicles (EV) and leads to malfunctions of nearby weak components. Hence, EMI should be mitigated in the fast-switching process of DC-DC converters for their better performance. Recently, a randomized carrier frequency modulation with a fixed duty cycle (RCFMFD) based digital chaotic pulse width modulation (DCPWM) has been used in the EMI mitigation process, and also it gives better results than the periodic PWM technique. For most of the PV panel and super-capacitor bank-based power systems, a two-stage cascaded boost (TSCB) DC-DC converter have been used for voltage lifting techniques. In this work, FPGA controller-based DCPWM and periodic PWM techniques has been implemented on a 40W, 200kHz (TSCB) DC-DC converter to test and suppress the conducted EMI. During periodic PWM approach −58dBV of conducted EMI was generated in this converter and it has been reduced to −68dBV in chaotic approach. Totally −10dBV which is equal to 3V(RMS) of conducted EMI has been mitigated in DCPWM compared with periodic PWM on two-stage cascaded boost converter for EV applications.
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Kalaiarasu, S., Natarajan, S. Conducted Electromagnetic Interference Mitigation on Two-Stage Cascaded Boost (TSCB) DC-DC Converter Using FPGA Based DCPWM Technique for EV Applications. J. Electr. Eng. Technol. 18, 2003–2013 (2023). https://doi.org/10.1007/s42835-022-01264-3
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DOI: https://doi.org/10.1007/s42835-022-01264-3