METHOD AND CIRCUIT ARRANGEMENT FOR DRIVING PERMANENTLY EXCITED ELECTRIC SINGLE-PHASE AC MACHINES

摘要

the method is characterized by that superposicu00ed certain shapes svorkovu00e9mu voltage (u) through inverterscan be achieved by minimising phase current effective value (i) machines (5) on the alternating current at the maximum torque of rotation is chosen the optimum shape and tension, such as sinusoidal in shape.a rectangular shape or a mixed shape according to the size of the operation. the machine (5) on the alternating current power measured value of the angle (.fi.) inverse derivative regulatory member (6), which converted it into a circular frequency (. omega.) inputs first and second steering gear (1, 2) is brought forward angle of (.fi.) in advance the moment (m.sub.soll.n.) and mezistupu0148ovu00e9 voltage (u.sub.zk.n.). the first control device (1) according to polarity of the voltage in the half period of the switching time moments (.sigma. -.delta.,.sigma. +.delta.) for switching to mezikruhovu00e9 voltage (+ u.sub.zk.n., u.sub.zk.n.) which are transferred to the first input command set (3).the second control device (2) creates a nominal voltage which powers the control set (and