Developmental Research of Brushless AC Generator without Exciter

1.定子直流励磁无刷三相同步发电机的研制：研制了一台无励磁无刷两极三相同步发电机。2.无刷三相同步发电机的磁场分析：发电机定子由两个不同极数的绕组组成。转子由与二极管短路的励磁线圈组成。磁场分析结果表明，该发电机的磁链分布与普通发电机的磁链分布基本相同。3.定子直流励磁单相无刷同步发电机的研制实验结果表明，只要发电机励磁回路布置合理，4.无刷自励式单相同步发电机的研究 关于我们 开发了有限元分析，其给出较短的CPU时间和精确的解。通过这种技术，发电机的优化设计，包括凸极和饱和的影响成为可能。5.逆变器励磁的鼠笼感应发电机的开发：GTO晶闸管逆变器被构造并与感应电机相结合。从实验上看，很明显，通过将脉宽调制（PWM）应用于逆变器，该系统的效率得到了提高。6.定子直流励磁无刷同步发电机的研究设计：通过对发电机结构的研究，发现电压调整率与负载绕组轴线与励磁绕组轴线的夹角有关，7.鼠笼式异步发电机控制的研究：获得了由逆变器提供异步发电机所需无功功率的GTO逆变器-异步发电机系统的主要试验数据。少

1.DEVELOPMENT OF STATOR DC-EXCITED BRUSHLESS THREE-PHASE SYNCHRONOUS GENERATOR: The brushless 2-pole three-phase synchronous generator without exciter was constructed and investigated in detail. It was proved experimentally that this generator was to be practical use.2.MAGNETIC FIELD ANALYSIS OF BRUSHLESS THREE-PHASE SYNCHRONOUS GENERATOR: The stator of generator contains two separate windings which have different pole numbers. The rotor consists of field coils short-circuited with diodes. As a result of field analysis, it was found that the flux distribution of generator was almost the same as that of ordinary generator.3.DEVELOPMENT OF STATOR DC-EXCITED BRUSHLESS SINGLE-PHASE SYNCHRONOUS GENERATOR: From experimental results, it was confirmed that, if the arrangement of generator field circuit was suitable, the output voltage could be kept constant even under constant stator dc current.4.STUDY OF BRUSHLESS SELF-EXCITED TYPE SINGLE-PHASE SYNCHRONOUS GENERATOR DESIGN: A new technique of … More finite element analysis which gives a shorter cpu time and an accuracy solution was developed. By means of this technique, optimal design of generator including the effects of saliency and saturation became possible.5.DEVELOPMENT OF SQUIRREL CAGE INDUCTION GENERATOR EXCITED BY INVERTER: GTO thyristor inverter was constructed and combined with a induction machine. Experimentally, it was evident that, by applying Pulse Width Modulation(PWM) to the inverter, an efficiency of this system was improved.6.STUDY OF STATOR DC-EXCITED BRUSHLESS SYNCHRONOUS GENERATOR DESIGN: From the investigation of generator structure, it was found that the voltage regulation depended on the angle between load winding axis and exciting winding axis, and also on the arrangement of field circuit.7.STUDY OF SQUIRREL CAGE INDUCTION GENERATOR CONTROL: The principal test data for the GTO inverter - induction generator system, in which the inverter supplies the reactive power required to the induction generator, were obtained. Less