Motor Generator Synchronizing Unit
Original Publication Date: 1988-Feb-01
Included in the Prior Art Database: 2005-Feb-14
A power supply system for a computer system has more than one motor generator set and may have, for example, three such units. To power up such a system, the first unit is simply turned on; there is no synchronization problem. The units' outputs are connected to an unloaded power bus and are redundant in that all units are not required to operate in order to supply the load. Each motor generator has an identical independent control unit, which may be controlled by a microprocessor. The microprocessor controls a synchronizing unit for bringing a new unit on line in random sequence regardless of which unit or units are already operating. Each unit has a voltage and frequency detector and a zero crossing detector for both the controlled motor generator set and the power bus to be driven.