A novel analysis and design method of phase lead filters in repetitive controllers for pulse-width modulated inverters

作者：Yang Shunfeng^*; Wang Peng; Tang Yi; Zagrodnik Michael; Hu Xiaolei; Tseng King Jet

来源：31st Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2016-03-20 to 2016-03-24.

• Pulse-width Modulated (PWM) Inverter
• Repetitive Control
• Phase Lead Filter
• Time Advance Unit

Repetitive control strategies have been commonly pulse-width modulated (PWM) inverters for many industrial applications. The phase delay in the overall control system, e.g. the delay caused by the digital duty cycle calculation, PWM generation and the repetitive controller, has to be compensated by elaborately designed phase lead filters in order to prevent control performance deterioration and system instability. Nevertheless, quantificational analysis and practical design of the time advance unit in such filters is hardly to be found in existing literatures. To provide explicit analysis of the phase lead filters, this paper presents a novel design method of the time advance unit in repetitive controllers, which can predict the overall system stability margin and improve the control performance. In order to verify its correctness and effectiveness, the proposed method is simulated with PLECS and implemented experimentally to show the accurate stability margin calculation, as well as excellent steady state performance and dynamic response of the control scheme.

• 出版日期2016
• 单位南阳理工学院