Work

Coordinated PWM-Based Active Thermal Control for Power Semiconductor Devices in Parallel Grid-Tied Inverters

Year: 2024

Type: article

Abstract: This article proposes a new active thermal control method for power semiconductor devices in parallel grid-tied inverters using coordinated pulsewidth modulation (PWM), which breaks the limitation that the PWM-based active thermal control cannot reduce the switching frequency below rated value, and therefore provides more regulation freedom to improve the reliability of power semiconductor devices. In specific, both frequency and phase shift values of PWM sequences will be adjusted coordinately to relieve the junction temperature of parallel inverters while keeping the total high-frequency harmonics at point of common coupling (PCC) to meet the quality requirement. The presented method is applicable to parallel inverters with identical or different input power. Finally, experimental results verified the performance of the proposed method.

Source: IEEE Transactions on Power Electronics

DOI: 10.1109/tpel.2024.3452722

Authors: Tao Xu, Feng Gao, Pengfei Tan, Frede Blaabjerg

Institutions: Shandong University, Aalborg University

Language: English

Topic: Multilevel Inverters and Converters

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: green

Funder: National Natural Science Foundation of China