Characteristics of Self-Excited Generator System at Variable Speed Constant Voltage Constant Frequency by Multi-Field Induction Machine

In this paper we deal with a generator system by use of variable energy like a wind power. The variable energy has influence voltage and frequency of a generator system. However, load requires constant voltage and frequency. Therefore, this paper proposed that a generator system have good points as follews:(1) This generator is brushless system make used of Multi-Field induction machine.(2) Frequency converter of small capacity used for constant voltage and frequency in load at variable speed.(3) PWM Inverter can supplying reactive power to Self-Excited generator.(4) Voltage wave of load is sine wave by LC filter of the frequency converter.The Multi-Field induction machines of this generator system have 4 poles and 8 poles as a same stator winding. The rotor of Multi-Field machine is especially cage type. This rotor can transform among 4 poles field and 8 poles field on the stator.In the present paper, we described an experimental study of the brushless, Self-Excited, constant voltage, constant frequency, variable speed and sine wave generator system by Multi-Field induction machine. We described component of this generator system, operation of Multi-Field induction machine, characteristics of generator system, and effect of LC filter in frequency converter.