POWER SYSTEMS

摘要

The present invention provides a power system that has particular application in marine vessels. The power system includes a first ac generator (2a) that is connected to a first ac busbar (36a) for distributing power. A second ac busbar (36b) for distributing power is connected to the first ac busbar (36a) by a mid-bus transformer (38a) that does not require a phase shift and can have a relatively low rating compared to the transformers that are used in known power systems having a similar arrangement. A power converter (12a) is connected to the first ac busbar (36a) and is used to interface with an ac motor (10a). A second generator (2b) is connected to the second ac busbar (36b). The power converter (12a) and ac motor (10a) can be supplied with power directly from the first ac busbar (36a) or from the second ac busbar (36b) via the mid-bus transformer (38a).