Patent ID: 8779716
Filing Date: 2014-07-15
Classification: H02J,H02M,H02P

Abstract:
1. A DC to AC inverter comprising: a DC input for coupling to a long term DC energy store, two or more DC to AC converters that provide a plurality of converter output channels, the converter output channels configured for coupling to a switching network with a plurality of load output channels for coupling to one or more loads, the switching network being configurable to selectively couple one or more of the converter output channels to one or more of the load output channels, and at least one power frequency phase controller or at least one power frequency phase controller input for coupling to at least one power frequency phase controller, wherein: the inverter draws a DC input current from a long term DC energy store coupled to the DC input and generates AC output voltages on the output channels that have frequencies, amplitudes, waveforms, and phase differences controlled by the at least one power frequency phase controller, and each converter output channel can be connected to and supply power to at least one single phase mains apparatus load via the switching network when the switching network is coupled between the converter output channels and the at least one single phase mains apparatus load, and when the at least one power frequency phase controller sets the AC output voltage on the output channel to a suitable frequency and amplitude, and two or more of the converter output channels can be connected to and provide output to power one or more poly-phase electric motor loads via the switching network when the switching network is coupled between the converter output channels and the one or more poly-phase electric motor loads, and when the at least one power frequency phase controller sets the AC output voltages on the output channels to a suitable frequency, amplitude, waveform, and phase difference.