| 摘要 |
PROBLEM TO BE SOLVED: To provide a cross current compensator of an AC generator capable of reducing the manufacturing man-hour by reducing the size and weight of components being used. SOLUTION: When the output voltage of an AC generator 1 increases relatively due to some cause during parallel operation of the AC generator 1 and other AC power supply 2, a cross current flows between both power supplies and being detected by a current transformer 3. A current-voltage converting circut 60 including a Hall element 62 converts the cross current into a voltage. On the other hand, transformers 41, 42 and 74, 75 detect the output voltage from the AC generator. A vector operating circuit 18 comprising operational amplifiers 81-89 performs vector operation of these voltages and supplies the output voltage from the AC generator 1 superposed with the reactive component of cross current to a full-wave rectifier circuit 90 which outputs a feedback voltage signal e to an AVR (Automatic Voltage Regulator). The AVR controls the output voltage from the AC generator 1 to reduce the reactive component of cross current. COPYRIGHT: (C)2006,JPO&NCIPI
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