| 摘要 |
<p>PURPOSE:To obtain the compensation and the phase difference of a voltage by composing an exciting winding and a compensating winding of a compensating transformer in combination of triangular connection and star connection, and connecting the triangular-connected exciting winding with the output side of a non-voltage compensating side DC winding in parallel, thereby eliminating a stable winding. CONSTITUTION:A compensating transformer 30 is composed of a star-connected compensating winding 33 and a triangular-connected exciting winding 34, which is connected with a triangular-connected nonvoltage compensating side DC winding 4. The neutral point side of the winding 33 is connected in series with the phase output terminals u1, v1, w1 of a start-connected DC winding 3 to output the voltage compensated voltage to the output terminals (u), (v), (w) of the winding 33 and voltages among the output lines of the winding 4 to the output terminals u2, v2, w2 of the winding 4 as they are. Thus, three-times harmonic wave exciting current can be circulated in a closed loop of the triangular-connected winding of the transformer to be absorbed to eliminate a stable winding which was heretofore necessary, thereby simplifying the winding configuration.</p> |
