基于改进同步解调方式的三级式同步电机无位置传感器起动控制  

Sensorless Starting Control of Three-Stage Synchronous Machines Based on Improved Synchronous Demodulation Scheme

作　　者：蔡正友 魏佳丹[1] 胡文枝 张卓然[1] 周波[1] Cai Zhengyou;Wei Jiadan;Hu Wenzhi;Zhang Zhuoran;Zhou Bo(Center for More-Electric-Aircraft Power System Nanjing University of Aeronautics and Astronautics Nanjing 211106,China;Beijing Shuguang Aviation Electric Co.Ltd Beijing 100028,China)

机构地区：[1]南京航空航天大学多电飞机电气系统工信部重点实验室,南京211106 [2]北京曙光航空电气有限责任公司,北京100028

出　　处：《电工技术学报》2024年第14期4353-4365,共13页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51877110);航空科学基金(201958052002)资助项目。

摘　　要：针对航空三级式同步电机起动控制中存在的转子位置信息获取困难问题,在励磁电压高频谐波自注入方法分析的基础上,该文基于同步解调的基本思路,提出了一种无需极性判断和励磁电流采样环节的同步解耦信号生成方式,并根据主发电机中响应电压谐波的频谱特性设计了位置误差信息提取的精准谐波消除滤波器,可以降低转子位置估计闭环系统的阶次,增强系统的稳定性以适应更宽的转速范围。最后通过仿真和实验证明了所述改进同步解调方法能够实现高精度和宽转速范围的三级式同步电机无位置传感器起动控制。Three-stage synchronous machines(TSSM)have been widely employed in the more-electric aircraft due to their mature structure and simple excitation control in the generation mode.They also have the potential to achieve the integrated function of a starter/generator.The rotor position sensor is unnecessary since the TSSM is normally employed as the aircraft’s generator.In the starting control mode,the rotor position information is required for current closed-loop control,and the additional encoder or rotary transformer can be installed coaxially.The electromechanical sensor causes poor reliability and low utilization in aviation conditions.Thus,the sensorless control strategy can be a suitable candidate method for TSSM to achieve the starting control function.Due to the specific structure of TSSM,recent literature on sensorless starting control of TSSM focuses on signal injection methods and rotor position demodulation schemes.With the multi-stage TSSM,there are various high-frequency injection methods and the corresponding response signal extraction schemes.Torque ripples exist due to high-frequency signals of high signal-to-noise ratio(SNR)injections.Although the traditional heterodyne demodulation scheme achieves a high-precision rotor position estimation by adjusting the phase of the decoupling signal,the parameters design for the high-order filter is complex,and the stability of the demodulation scheme is poor.Thus,this paper introduces a high-frequency signal self-injection method based on excitation harmonics concerning the rotating rectifier of TSSM.The corresponding specific filter and the rotor position demodulation strategy are designed.Firstly,considering the multi-stage structure signal transmission of TSSM in the starting control based on the single-phase AC excitation scheme,the characteristics of the second high-frequency harmonics generated by the rotating rectifier are analyzed.High-frequency response signals with rotor position information in the armature windings of the main generator are deriv

关 键 词：三级式同步电机 谐波自注入 同步解调 精准谐波消除滤波器 

分 类 号：TM341[电气工程—电机]