A control-winding direct power control (CWDPC) strategy for a dc generating system based on the five-phase dual-stator winding induction generator is proposed and investigated in this article. For this generator, the flux-oriented control is usually employed in the previous work mainly for the sake of good static performance. However, the present control strategy has the limitation of the further enhancement of the dynamic properties. This article explores a CWDPC strategy to upgrade the dynamic performance of this generating system. The fundamental active power of the five-phase control winding (CW) relates to its dc bus voltage while the dc bus voltage on the five-phase power-winding (PW) side is related to the control of five-phase CW fundamental reactive power. By replacing inner current loops to power control loops, the CW instantaneous fundamental active and reactive powers are calculated through the power observer and regulated directly through two power-control loops. In the transient process, the CW fundamental active power changes slightly while the reactive power can be quickly controlled for fast recovery of the dc bus voltage on the five-phase PW side. As the system has an additional control degree of freedom, the third harmonic is also considered in the proposed strategy, and the corresponding implementation is given as well. The simulation and experimental results demonstrate that using the proposed CWDPC strategy, the system has shorter transient time and lower voltage change in the dynamic response than the flux-oriented control strategy, which means the dynamic performance is further improved.

中文翻译：

---

五相双定子绕组感应发电机直流发电系统的控制绕组直接功率控制策略

本文提出并研究了一种基于五相双定子绕组感应发电机的直流发电系统的控制绕组直接功率控制 (CWDPC) 策略。对于这种发电机，以前的工作中通常采用磁通定向控制，主要是为了获得良好的静态性能。然而，目前的控制策略具有进一步增强动态特性的局限性。本文探讨了一种 CWDPC 策略来升级该发电系统的动态性能。五相控制绕组（CW）的基波有功功率与其直流母线电压有关，而五相功率绕组（PW）侧的直流母线电压与五相CW基波无功功率的控制有关. 通过将内部电流回路替换为功率控制回路，CW 瞬时基波有功和无功功率通过功率观测器计算，并通过两个功率控制回路直接调节。在瞬态过程中，连续波基波有功功率变化很小，而无功功率可以快速控制，以实现五相PW侧直流母线电压的快速恢复。由于系统具有额外的控制自由度，所提策略也考虑了三次谐波，并给出了相应的实现方法。仿真和实验结果表明，采用所提出的CWDPC策略，系统比磁通控制策略具有更短的瞬态时间和更低的动态响应电压变化，这意味着动态性能进一步提高。