【摘要】 在三相倍极感应励磁同步发电机中，转子励磁绕组中的励磁电流是由定子直流绕组建立的倍极静止磁场感应产生的，这种励磁电流获得方式及倍极静止磁场的存在，势必影响电机的运行性能，本文对此进行了理论分析及实验研究．结果表明：倍极磁场的存在确会影响电机的运行性能，但由于转子绕组的特殊工作状态，产生一定的转子励磁电流所需的倍极静止磁场气隙合成磁密很低，故电机的工作特性、电压波形、振动和噪声等均无明显恶化．更多还原

【Abstract】 In the 3 phase synchronous generator with double pole induced excitation, rotor field currents are induced in rotor field coils by a double pole stationary magnetic field established by a stator dc winding. This method of obtaining rotor field current and the existence of the double pole magnetic field must have some effects on the performance of the generator. This is investigated theoretically and experimentally in the paper, and it is concluded that the performance of the generator are indeed affected by double pole field. But because of the special operation state of the rotor field coils, the resultant air gap flux density of the double pole field is very low to produce required rotor field current. Therefore, there are no notable deteriorations in the characteristics, voltage waveform, vibration and noise etc..更多还原