| 摘要 |
A grid tied inverter connectable to an electricity grid comprises a DC-DC current fed push-pull converter 120, a transformer and an unfolding circuit 130. The unfolding circuit is connected to a mains electricity supply and the DC-DC converter is connected to a DC source, e.g. battery 110. The DC-DC converter generates a current waveform from the DC voltage source, where the current waveform is substantially synchronised to the electricity grid. The transformer has two primary sides connected to ground via a switching transistor and a voltage clamp commuting a current from the respective primary side of the transformer when the switching transistor is turned off. The voltage clamp may comprise a capacitor connected in series with the transistor. The arrangement is suitable for connecting domestic producers of electricity to the grid. |
