抄録
The engine generator of the series hybrid electric vehicle (HEV) is operated at the most appropriate constant speed and constant power operation so that exhaust gas is kept at a minimum and so that high efficiency is achieved. Furthermore, since the output voltage of generator must be controlled according to the terminal voltage of the battery, generators are required to possess a performance which allows for easy adjustment of the output voltage.
The hybrid excitation type synchronous machine (HSY) is equipped with a permanent magnet and field winding in its field. It is believed to possess properties suitable for the generator for HEV because its field mmf can be adjusted with a small excitation input, it has a high efficiency and it is brushless.
In this paper, the performance calculation method of HSY as a generator will be established, and a comparative examination between the actual measured value and calculated value as well as the clarification of characteristics will be achieved. In addition, the adequacy of this performance calculation method and the HSY's superb performance as a generator for HEV will be demonstrated. Furthermore, a field control device that can execute constant voltage control and constant power control for HSY will be developed and a power generation system for HEV will be configured. Through this power generation system, the steady state and transient characteristics will be examined through experiments, and the feasibility for actual use will be demonstrated.
