US Patent 10074981 Power control systems and methods

A power supply configured to be operatively connected to at least one load, comprising an AC bus operatively connected to the load, a first AC power source operatively connected to the AC bus, a DC bus, a DC/AC converter operatively connected between the DC bus and the AC bus, a first DC power source, and a load balancer operatively connected between the first DC power source and the DC bus. The power supply operates in a first mode in which power is supplied to the load from the first AC power source through the AC bus and in a second mode in which power is supplied to the load from the first DC power source through the DC bus, the DC/AC converter, and the AC bus.