The device for battery charge or discharge based on the technology of bidirectional converter can be used in charging or discharging battery, and realize sine wave of ac and unity power factor.
This charger has the trait of high power factor, can be connected to ordinary single-phase AC sockets directly, and offers low-power and low speed charging for storage batteries.
Research shows the SVG can effectively compensate reactive power and govern power factor of the grid the voltage fluctuation when the chargers work in the charging process.