| 摘要 |
PURPOSE:To facilitate the suppression of harmonies not only generated by a UPS but also generated by other loads. CONSTITUTION:A UPS 1 and its bypass power supply rotate 11 are connected to a power supply bus 2. A control signal is supplied to the forward converter 4 of the UPS 1 from a phase controller 14. Harmonies generated in the bypass power supply route 11, a terminal apparatus 22 and VVVF's 25 and 26 are supplied to the phase controller 14 by current transformers 21, 24, 29 and 50. |
