Comparison of Dead-Time Effects in a WPT System Inverter for Different Fixed-Frequency Modulation Techniques

Conference · Mon Jun 01 00:00:00 EDT 2020

DOI:https://doi.org/10.1109/ITEC48692.2020.9161646· OSTI ID:1648889

Kavimandan, Utkarsh  ^[1]; Galigekere, Veda Prakash  ^[1]; Onar, Omer  ^[1]; Ozpineci, Burak  ^[1]; Mahajan, Satish M. ^[2]

---

1. ORNL
2. Tennessee Technological University, Cookeville TN

In this paper, a comparative study of the dead-time effects in a wireless power transfer (WPT) system inverter is performed for different fixed-frequency control techniques. The dead-time is provided between the complementary switching instances of the inverter phase-legs to ensure safe operation of the input power source. Under certain operating conditions, the dead-time results in waveform distortions or voltage-polarity reversal (VPR) at the inverter output. The VPR affects the switching characteristics, harmonic spectrum, switching losses, and output voltage/power of the system. A detailed analysis of the dead-time effect on the WPT system parameters such as output voltage and output power is conducted for the different fixed-frequency control strategies (i.e., traditional phase-shift control, asymmetrical clamped-mode, and asymmetrical duty-cycle control). Furthermore, the impact of dead-time on the inverter switching losses is compared for the different control strategies.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1648889
• Resource Relation: Conference: IEEE Transportation Electrification Conference and Exposition (ITEC) - Chicago, Illinois, United States of America - 6/22/2020 8:00:00 AM-6/26/2020 8:00:00 AM
• Country of Publication: United States
• Language: English