Stabilization and assessment of interaction dynamics for More Electric Aircraft
Stabilization and assessment of interaction dynamics for More Electric Aircraft
复制标题
多电动飞机交互动力学的稳定和评估
DOI：
10.1109/ipemc.2016.7512401
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Kui Wang
中科院分区：
文献类型：
--
作者：
Xuan Zhang;Lie Xu;Yongdong Li;Zedong Zheng;Kui Wang
提出了一种基于源侧PWM整流器输出阻抗重构的多电飞机电力系统主动稳定方法。在PWM整流器的交流电压指令中注入非线性补偿信号，增加与直流母线电容并联的虚拟电阻。因此，恒定功率负载（cpl）引起的不稳定性可以被中和。与传统的主动阻尼方法相比，补偿信号的值可以用虚电阻表示，从而明确了稳定性提高的物理机理。此外，所有提供负载输入电压的远程传感器都可以移除。对所提出的主动稳定方法的稳定性和灵敏度进行了定性分析。讨论了CPLs的LC滤波器与源侧直流电容器等无源器件的相互作用动力学。仿真结果验证了该方法的有效性。
This paper proposes a novel active stabilization method based on reshaping the output impedance of the source-side PWM rectifier for More Electric Aircraft (MEA) power system. A nonlinear compensation signal is injected into AC voltage command of PWM rectifier to adding a virtual resistor paralleled with DC bus capacitor. Thus, the instability caused by constant power loads (CPLs) can be neutralized. Compared to conventional active damping methods, the value of compensation signal can be expressed by the virtual resistor so that the physical mechanism of stability improvement can be clarified. Besides, all remote sensors providing load input voltages can be removed. Stability and sensitivity of the proposed active stabilization method are analyzed qualitatively. The interaction dynamics of passive devices, such as LC filters of CPLs and DC capacitors on source side are discussed. Simulation results validate the effectiveness of the proposed method.