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Method and apparatus for preventing a current collapse in a phase not participating in the commutation of a three-phase, block-current supplied synchronous machine
Method and apparatus for preventing a current collapse in a phase not participating in the commutation of a three-phase, block-current supplied synchronous machine
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机译:用于防止电流在三相不参与换相的同步电机的换相中崩溃的方法和装置
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摘要
A method and apparatus for preventing a current collapse in a phase not participating in the commutation, of a three-phase block current supplied synchronous machine, while the phase currents of the other two phases are being commutated. A control voltage controlling the synchronous machine is acted upon during the commutation of two phase currents by an additional control voltage such that the average of current drop in the down-commutating phase is equal to the average of the negative current rise in the up-commutating phase. Thus, a method and a circuit arrangement for carrying out this method are obtained with which the torque oscillations of a three-phase-feed drive can be reduced substantially.
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