| 摘要 |
PURPOSE:To prevent a magnetic field in a power feeding circuit for supplying power from an AC power regulator to an AC motor. CONSTITUTION:Connection lines R1, R2, R3, R4, S1, S2, S3, S4, T1, T2, T3, and T4 connected to the output of AC three-phase power adjusters VFR, VFS, and VFT for adjusting AC power of phases R, S, and T are bound into unit connection lines U1 (U2, U3 and U4) made up of R1, S1, and T1 (R2, S2, T1, R2, S3, T3, R4, S4 and T4). Then, the connection lines R1, R2, R3, and R4 (S1, S2, S3, S4, T1, T2, T3, and T4) are connected to an R-phase (S-phase, T-phase) voltage feeding terminal MR (Ms and MT). |
