As to the commutation tuning control, this thesis performe the studies about three commutation instant tuning controls, including altered and fixed, fixed and receded, and and altered simultaneously.

• 及导通角与截止角同时前移等。对于所有的调控方法，均详细从事其理论之分析推导、调控机构之设计与实现、以及实测之效能评估。