摘要：为了提高永磁同步发电机电流控制性能，提出了一种基于积分参考补偿的改进无差拍电流控制策略，相比传统无差拍控制，改进无差拍控制利用反馈量实现了对电机电流的超前一拍估计，削弱了数字控制滞后一拍对系统动态性能的影响，显著提高了电流跟踪的动态性能；此外，在改进无差拍控制的参考电流中引入电流跟踪误差的积分补偿，提高了电流跟踪的稳态精度。仿真结果表明，该控制策略具有较高的跟踪精度与良好的动态特性。
关键词：永磁同步发电机；无差拍控制；电流超前预测；积分补偿
Abstract: In order to improve the current control performance of permanent magnet synchronous generator (PMSG), an integral reference compensation based improved deadbeat control scheme was proposed. Compared with the conventional deadbeat control, the improved deadbeat control used feedback variables to predict the PMSG current. With the predicted current, the improved deadbeat control could suppress the impact of onestepdelay and notably enhance the dynamic performance of the PSMG current control. Besides, a tracking error based integral reference compensation scheme was also introduced to the improved deadbeat control to improve the tracking accuracy. The simulation results suggest that the proposed scheme could provide high tracking accuracy as well as good dynamic performance.
Key words: PMSG; deadbeat control; current prediction; integral compensation