The development of permanent magnet electrical machinery with high efficiency and high power factor supply new ways for water pump saving energy.
The precondition of constructing single-stage high power factor high power supply based on flyback topology is that the release rule of transformer energy-storage is clear.
The paper discusses a new high power factor converter applied in mine hoist.
Novel circuit structure and topologies of single-stage DC switching power supplies with uninterruptible power supply and high power factor, based on flyback converter, are proposed.
The features of the new method are simple main circuit, without big transformer and inductor, high power factor and low harmonics, easy to start and by pass operation.
These motors possess running capacitor. The possess high power factor and steady running characteristics, make used for extensively motors are not suitable for light load running.
