摘要
针对单相全控桥式整流电源的输出电压中含有谐波分量的情况,首先建立了将直流电机励磁绕组视为分布参数的等值电路,推导出电压沿绕组的分布是不均匀的,其首端将受到过电压的冲击的结果。其次推导出系统发生谐振和误操作时可能出现的过电压倍数,并用实例加以验证。最后提出并分析了避免出现过电压的几点防护措施。
It aims at the instance that there contains some resonance wave ponderance in the export voltage of the fully controlled single-phase bridge. First of all, this paper founds a viewpoint that the excitation winding of DC motors are equal to the equivalence circuit of the distributing parameter. Then it infers to the result that the voltage distribute along winding is asymmetric and it’s head port will be lashed with over voltage. Secondarily, the paper infers to the over voltage multiple that it is likely to appear when the system is resonancing or operated by mistakes. And this has been validated by examples. Finally, this paper provides and analyses several secure measures to avoid appearing over voltage.
出处
《电气技术》
2006年第10期35-39,共5页
Electrical Engineering
关键词
直流电机
励磁绕组
谐波
影响
DC motor,Excitation winding,Resonance wave,Influence
