2013高考时间专利名称：TRIGGER ANGLE REGULATOR FOR SEPARATELY EXCITED INVERTER 申请号：JP8888581
高辛烷值申请日：19810611
税控机
小学英语学习网站>笨拙公开号：JPH0353867B2
公开日：motherhood>正确的化妆品使用步骤
元音字母
19910816
专利内容由知识产权出版社提供
纬编针织布
台风暹芭摘要：PURPOSE:To enable to feed a current to a bus-bar even when the number of revolution is reduced less than the rated value at a thyristor inverter type shaft generator by a method wherein a parately excited inverter is controlled making the trigger angle thereof as the function of the number of revolution of the synchronous generator. CONSTITUTION:Output of the synchronous generator 10 to be driven with the variable speed is converted into a direct current by a rectifier 12, and is fed to the alternating current bus-bar through the parately excited inverter 16 using a thyristor. The number of revolution of the generator 10 is detected with a detector 22, output thereof is inputted to a multiplier together with a previously t voltage to obtain a signal alpha' for control of a trigger angle, while a cosine angle generator 30 is provided in the output circuit of the inverter 16 to obtain a cosine voltage signal v', both are compared in a trigger angle decider 34, and when both coincide with each other, a trigger signal for the interver 16 is generated. Accordingly even when the generator 10 is decelerated to the speed less than the rated number of revolution, operation can be performed with the best power factor reducing output of the inverter 16.
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