A DC-link voltage regulation method is proposed based on capacitor energy control (CEC) for the doubly salient electro-magnetic generator (DSEG) system. Instead of tracking the DC-link voltage, the stored energy in the DC-link capacitor is set as the control target in the outer loop. A proportional component that converts the command output current into the command field current is developed between the capacitor energy loop and field current loop. The coefficient in the proportional component is investigated based on the mathematical model of the 12–8 pole DSEG, considering the load and speed variation. The dynamic response of the DSEG system is accelerated and the DC-link voltage variation is reduced with the proposed method. Furthermore, the adaptability to speed variation of the controlled is optimized. Since the DC-link capacitance is an additional parameter, the influences of capacitor degradation are investigated. The conventional voltage control and the CEC are implemented and compared on a DSEG platform. The optimized performance of the proposed method is verified by both finite element analysis (FEA) and experiments. The proposed method provides optimized dynamic performance over the entire speed range, enabling the DSEG system as a competitive option in the aircraft application.

中文翻译：

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基于电容能量的双凸极无刷直流发电机动态性能优化控制

针对双凸极电磁发电机（DSEG）系统，提出了一种基于电容器能量控制（CEC）的直流母线电压调节方法。不是跟踪直流母线电压，而是将直流母线电容器中存储的能量设置为外环中的控制目标。将指令输出电流转换为指令励磁电流的比例分量在电容器能量回路和励磁电流回路之间形成。考虑到负载和速度变化，基于 12-8 极 DSEG 的数学模型研究了比例分量中的系数。DSEG 系统的动态响应被加速，并且直流母线电压变化通过所提出的方法减少。此外，优化了被控速度变化的适应性。由于直流母线电容是一个附加参数，因此研究了电容器退化的影响。常规电压控制和 CEC 在 DSEG 平台上实现和比较。通过有限元分析（FEA）和实验验证了所提出方法的优化性能。所提出的方法在整个速度范围内提供优化的动态性能，使 DSEG 系统成为飞机应用中的一个有竞争力的选择。