中文摘要：

分析了定子双绕组感应发电机（dual stator-winding induction generator，DWIG）系统电压控制机理，并由此揭示了控制绕组瞬时功率对系统电压的影响，在此基础上提出了DWIG发电系统的直接功率控制策略，即根据控制绕组端电压所在的扇区和功率滞环比较器的输出，选取优化开关表中合适的电压矢量，以对控制侧瞬时功率实施直接控制。该控制结构由控制绕组指令功率生成、控制绕组瞬时功率计算、功率滞环及优化开关表等模块组成，该文对其进行了详细分析。在一台18kW原理样机系统上的试验结果证明了该控制策略的有效性。

英文摘要：

A control strategy based on the control winding instantaneous power direct control for dual stator winding induction generator （DWIG） system is proposed. The control mechanism is firstly analyzed, and influence of the instantaneous active and reactive power in the control winding on the system voltage is disclosed. The strategy of the direct power control by selecting approporiate voltage vectors is then presented, through which the power errors are restricted in a certain band. The pulse width modulation is formed to realize the system voltage control. The detailed description on the DPC part is presented, including the command power generation, the instantaneous active and reactive power calculation, the power hysteresis and the optimal switching table. Experiments on a 18 kW DWIG system are provided to demonstrate the effectiveness.