Three-Phase Five-Level Cascade Quasi-Switched Boost Inverter

Electronics

Youn-Ok Choi¹  Van-Thuan Tran²  Minh-Khai Nguyen³  Cao-Cuong Ngo⁴ 

[1] Department of Electrical Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Korea;Department of Telecommunication Operation, Telecommunications University, Nha Trang 650000, Viet Nam;Faculty of Electrical and Electronics Engineering, Ho Chi Minh City University of Technology and Education, 1 Vo Van Ngan Street, Thu Duc District, Ho Chi Minh City 700000, Vietnam;Faculty of Electrical and Electronics Engineering, Ho Chi Minh University of Technology (HUTECH), 475A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City 700000, Vietnam;

关键词: cascaded H-bridge inverter;    three-phase inverter;    Z-source network;    quasi-switched-boost network;    shoot-through;   

DOI  :  10.3390/electronics8030296

来源: DOAJ

【 摘 要 】

This paper presents a three-phase cascaded five-level H-bridge quasi-switched boost inverter (CHB-qSBI). The merits of the CHB-qSBI are as follows: single-stage conversion, shoot-through immunity, buck-boost voltage, and reduced passive components. Furthermore, a PWM control method is applied to the CHB-qSBI topology to improve the modulation index. The voltage stress across power semiconductor devices and the capacitor are significantly lower using improved pulse-width modulation (PWM) control. Additionally, by controlling individual shoot-through duty cycle, the DC-link voltage of each module can achieve the same values. As a result, the imbalance problem of the DC-link voltage can be solved. A detailed analysis and operating principle with the modulation scheme and comprehensive comparison for the CHB-qSBI are illustrated. The experimental and simulation results are presented to validate the operating principle of the three-phase CHB-qSBI.

【 授权许可】

Unknown