摘要
基于放电电感模型全面地分析了感应子脉冲发电机容性整流系统的瞬态特性,厘清了此整流系统存在的全部四种工作模态。推导出各模态之间的临界电压值,以及换流延迟角度和重叠角度的计算式,建立了瞬态模型,并用阀对阀电路仿真和试验结果验证了所提理论计算的准确性。阐明了电路中各模态对充电过程的作用,分析了电路的等效形式,揭示了充电电压与电机电势(EMF)幅值的设计原理。研究结果表明:电路可以看成直流电源串联一个等效换流电抗和等效瞬态换流电感对电容器充电的形式;整个充电过程中起主要作用的是模态1和模态2;合理的充电电压设置值应介于1.3倍~1.5倍发电机相电势幅值之间。
Based on the discharge inductance model,the transient characteristics of capacitive rectifier system of pulsed homopolar inductor alternator are analyzed,and all four operating modes of this rectifier system are clarified.The critical voltage between modes and the formulas for calculating commutation delay angle and overlap angle are derived,and a transient model is established.The accuracy of the proposed theoretical calculation is verified by valve-to-valve circuit simulation and experimental results.The function of each mode in the circuit to the charging process is expounded,and the equivalent form of circuit is analyzed,and reveals the design principle of the charge voltage and the amplitude of motor electromotive force(EMF).The results of the study show that:the circuit can be seen as a form of charging a capacitor by serially connecting a DC source with an equivalent commutation reactance and an equivalent transient commutation inductance;mode 1 and mode 2 play a major role in the whole charging process;the reasonable charge voltage should be between 1.3 times and 1.5 times of the amplitude of generator′s phase EMF.
作者
刘龙建
于克训
谢贤飞
LIU Longjian;YU Kexun;XIE Xianfei(School of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650500,China;State Key Laboratory of Advanced Electromagnetic Technology,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《电机与控制应用》
2024年第6期57-68,共12页
Electric machines & control application
基金
国家自然科学基金(52007072)
强电磁技术全国重点实验室开放课题(AET2024KF013)。
关键词
感应子脉冲发电机
电容充电
瞬态特性
模态
等效电路
pulsed homopolar inductor alternator
capacitor charge
transient characteristics
mode
equivalent circuit
