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An optimization strategy for voltage regulation of three-phase PWM rectifier based on two-degree-of-freedom PID
- Source :
- 电力工程技术, Vol 42, Iss 3, Pp 149-156 (2023)
- Publication Year :
- 2023
- Publisher :
- Editorial Department of Electric Power Engineering Technology, 2023.
-
Abstract
- The VSR-VSI dual three-phase pulse width modulation (PWM) converters based on the cascade connection of a front-end three-phase voltage source rectifier (VSR) and a back-end three-phase voltage source inverter (VSI) have been widely used in elevator energy feedback systems, but the front-end three-phase VSR using the traditional proportional integral (PI) double closed-loop control structure usually has the problem that the mid-end DC voltage cannot take into account the disturbance immunity and the follow-ability. Given this, an improved DC voltage regulation strategy of the three-phase PWM rectifier based on two-degree-of-freedom proportional integral differential (PID) is proposed. Firstly, the structure and working principle of the three-phase VSR-VSI dual three-phase PWM converters are expounded. Then, the PI double closed-loop control scheme of the front-end three-phase VSR and its parameter design process are given to analyze the reasons why this traditional scheme cannot have good disturbance immunity and follow-ability of the DC voltage regulation system. On this basis, an optimized DC voltage regulation improvement strategy for the front-end three-phase VSR based on two-degree-of-freedom PID and its corresponding parameter design method are given. Finally, the correctness and the superiority of the proposed three-phase PWM-VSR DC voltage regulation strategy are verified by using the simulation and experimental comparison results.
- Subjects :
- energy feedback system
proportional integral (pi) double closed-loop control
three-phase pulse width modulation (pwm) rectifier
disturbance immunity
follow-ability
two-degree-of-freedom proportional integral differential (pid)
dc voltage regulation
Applications of electric power
TK4001-4102
Subjects
Details
- Language :
- Chinese
- ISSN :
- 20963203
- Volume :
- 42
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- 电力工程技术
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.361ea9521e234296958e5a94fcf75478
- Document Type :
- article
- Full Text :
- https://doi.org/10.12158/j.2096-3203.2023.03.017