Control device for a power distribution system

摘要

In a marine power distribution and propulsion system with a medium voltage distribution busbar (MVAC1) and a low voltage distribution busbar (LVAC1) then a rectifier (SC) is controlled, optionally to provide active filtering and static compensation benefits. A common power supply system incorporating ac generators (G1-G4) supplies power to the medium and low voltage distribution busbars. The rectifier (SC) is connected to the medium voltage distribution busbar (MVAC1). A controller (Co) uses feedback signals indicative of electrical quantities of the distribution voltages carried by both the medium voltage and low voltage distribution busbars (MVAC1, LVAC1) to control the rectifier (SC) to regulate electrical quantities at the ac terminals of the rectifier (SC) in order to achieve desired electrical quantities of the distribution voltage carried by the low voltage distribution busbar (LVAC1).

主权项

1. A control device configured for connection to a propulsion drive system including a rectifier (i) coupled to an AC generator via a busbar, and a DC motor and (ii) configured to provide a plurality of functions for controlling drive system power characteristics, the control device comprising:
a controller including (i) a regulator configured to provide a modulation reference signal to the rectifier and (ii) an estimation function block configured to receive AC feedback signals from the propulsion drive system; wherein the regulator provides the modulation reference signal responsive to a feedback loop including the AC feedback signals and a received voltage reference signal; and wherein the modulation reference signal facilitates control of each of the plurality of functions simultaneously.