We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Hybrid passivity‐based control of a three single‐phase star‐connected unidirectional five‐level rectifier with a space vector pulse‐width modulation algorithm for voltage balance.
- Authors
Cheng, Hong; Yang, Daokuan; Wang, Cong; Wang, Ning; Tian, Changgeng
- Abstract
Summary: The unidirectional multilevel rectifier has been used in numerous industrial applications due to its reduced active power switches, higher power density, and lower cost compared to conventional bidirectional converters. Recently, the unidirectional five‐level rectifier has been proposed for its lower device stress and the potential for extension to higher levels. However, it adopts a conventional linear proportional integral (PI) control strategy and sinusoidal pulse‐width modulation (SPWM) method, resulting in a complex control structure, particularly for the balance control of the midpoint voltage, and suboptimal dynamic performance. To address this issue and enhance system's large‐scale stability, a hybrid passivity‐based control (PBC) strategy, along with a simplified mathematical model, has been proposed. The hybrid PBC control strategy includes an outer loop active disturbance rejection (ADR)‐PI controller and inner loop PBC controller, providing a simple overall control structure and strong anti‐interference ability. Additionally, a space vector pulse‐width modulation (SVPWM) algorithm has been briefly introduced and applied to further improve the recovery and balance speed of the DC‐side capacitor voltages. Simulation and experiment results have validated the feasibility and effectiveness of the proposed hybrid PBC strategy and the SVPWM algorithm.
- Subjects
PASSIVITY-based control; PULSE width modulation; VECTOR spaces; ELECTRIC current rectifiers; VOLTAGE; POWER density; DYNAMIC balance (Mechanics)
- Publication
International Journal of Circuit Theory & Applications, 2024, Vol 52, Issue 7, p3255
- ISSN
0098-9886
- Publication type
Article
- DOI
10.1002/cta.3885