Power conversion system and method

A power system (10) includes a power source (12), a DC bus (16) for receiving DC power (14) from the power source, a line side converter (34) electrically coupled to the DC bus for converting the DC power from the DC bus to AC power with a regulated voltage output (20) to feed an electrical system (22); and a power conversion control system (24) comprising a line side controller (36) for controlling operation of the line side converter. The line side converter receives a voltage amplitude signal representative of the regulated voltage output, obtains a DC voltage difference signal using a DC voltage feedback signal of the DC bus and a DC voltage command signal, obtains a power command signal, and obtains a power feedback signal. The line side controller uses the DC voltage difference signal, the power command signal, and the power feedback signal to generate a phase angle control signal, and further generates a control signal for the line side converter using the voltage amplitude signal and the phase angle control signal.