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- Title
T 型三电平 400 Hz 三相 APF 预测无差拍重复控制.
- Authors
李样; 冯润波; 尹涛; 王莉; 舒泽亮
- Abstract
In order to improve the power quality of the 400 Hz aviation power supply system, active power filter (APF) is adopted, but the compensation effect is poor due to the high fundamental frequency and delay of the system. Based on the analysis of the impact of delay on the compensation effect, a predictive deadbeat repetitive control strategy is proposed. Firstly, predictive current control was introduced to improve the response speed of the system under dynamic conditions, which accelerated the dynamic response while reducing the steady-state error of the system. Secondly, to solve the problem of one beat delay in current control and sampling, a “two-beat prediction” was performed on the reference compensation current. In addition, to eliminate the periodic control error of compensating current, repetitive control was embedded in the current control loop. In both steady-state and dynamic simulations, this comprehensive control strategy exhibits superior compensation effects and dynamic performance compared to traditional control. To further validate the effectiveness of this strategy, experiments were conducted on a T-type three-level 400 Hz three-phase APF platform. The experimental results show that this control strategy can reduce the THD of the grid side current in the 400 Hz system from 10. 5% to 3. 13% .
- Subjects
ELECTRIC power filters; POWER resources; DYNAMIC simulation; DYNAMICAL systems; PROBLEM solving; ITERATIVE learning control
- Publication
Electric Machines & Control / Dianji Yu Kongzhi Xuebao, 2023, Vol 27, Issue 4, p34
- ISSN
1007-449X
- Publication type
Article
- DOI
10.15938/j.emc.2023.04.004