AC-DC integrated generation control technology of double-winding induction generator based on disturbance observation compensation current regulator

To address the issues of slow dynamic response and insufficient anti-interference ability of the current loop PI regulator in the AC/DC integrated power generation system of Dual Winding Induction Motor (DWIG), a control strategy based on disturbance observation compensation current regulator for the DWIG AC-DC integrated power generation system is proposed. Firstly, a mathematical model of the DWIG AC-DC integrated power generation system is established, and the limitations of the traditional PI regulator in AC-DC coupling scenarios are analyzed. Secondly, the sum of the coupling terms in AC and DC currents is defined as a disturbance term, a disturbance state observer is designed, the transfer function of the disturbance observation value to the actual value is derived, and the design constraints of the observer parameters are given. Finally, the total disturbance observation value is introduced into the current control strategy to form feedforward compensation, realizing decoupling control of d-axis and q-axis currents as well as AC and DC side winding currents. Experimental results show that the proposed strategy effectively enhances the current loop response capability of the system, improves the dynamic performance of the generator, and significantly reduces the mutual influence of AC and DC sides. This ensures stable output of AC voltage and DC voltage, and provides technical support for high-performance power supply of more electric aircraft power systems.