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Comprehensive Insight into the Operational Dynamics of TCM-Based Zero-Voltage Switching (ZVS) Two-Level Three-Phase Inverters for Electric Vehicle (EV) Motor-Drive Applications
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
RISE Research Institutes of Sweden, Digital Systems, Smart Hardware.ORCID iD: 0000-0002-5027-3491
2024 (English)In: 2024 IEEE Texas Power and Energy Conference, TPEC 2024, Institute of Electrical and Electronics Engineers Inc. , 2024Conference paper, Published paper (Refereed)
Abstract [en]

This paper introduces a novel triangular-current mode (TCM), zero-voltage switching (ZVS) two-level three-phase inverter, specifically designed to enhance the performance of the electric vehicle (EV) drive system. The primary objective is to enhance the inverter efficiency by minimizing turn-on and turn-off switching losses while mitigating electromagnetic interference (EMI) by generating sinusoidal output waveforms. The distinctive feature of this inverter lies in its gate driver, which executes the current modulation scheme. Achieving ZVS during turn-on involves the gate driver sensing the switch voltage and turning it on at zero voltage, utilizing TCM. For turn-off ZVS, the gate driver monitors the switch current, turning it off when it exceeds a predefined reference value. With a carefully placed snubber capacitor, turn-off ZVS is achieved. The implemented current modulation scheme yields an efficiency exceeding 99% for a 10 kW power rating. The sinusoidal output waveforms not only enhance motor lifespan by safeguarding against sharp-edge voltages but also offer benefits like reduced switch stress and simplified thermal management. 

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc. , 2024.
Keywords [en]
Electric drives; Electric inverters; Electric vehicles; Electromagnetic pulse; MOSFET devices; Power electronics; Silicon; Silicon carbide; Traction motors; Zero voltage switching; Current modulation; Current modulation scheme; Current-modes; Electric vehicle drive systems; Modulation schemes; Output waveform; SiC MOSFETs; Sinusoidal output; Sinusoidal output waveform; Three-phase inverter; Triangular current; Triangular-current mode; Two-level three-phase inverte; Zero- Voltage Switching; Efficiency
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:ri:diva-76412DOI: 10.1109/TPEC60005.2024.10472258Scopus ID: 2-s2.0-85189932934OAI: oai:DiVA.org:ri-76412DiVA, id: diva2:1932742
Conference
IEEE Texas Power and Energy Conference, TPEC 2024. College Station. 12 February 2024 through 13 February 2024
Available from: 2025-01-29 Created: 2025-01-29 Last updated: 2025-09-23Bibliographically approved

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Kostov, Konstantin Stoychev

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