초록 ▼

A current sharing modular power system including, in each module, an inverter circuit and means to determine the current to a common load from the module. A difference circuit is provided to determine the difference between the module supplied current and the average of the current supplied by the o

A current sharing modular power system including, in each module, an inverter circuit and means to determine the current to a common load from the module. A difference circuit is provided to determine the difference between the module supplied current and the average of the current supplied by the other modules. The difference is then utilized to vary the pulse width of the inverter output so that the pulses are wider if the current from the module is smaller than the current supplied by the other modules and the pulses are thinner if the current from the module is larger than the average current supplied by the other modules. The system also includes a voltage sense circuit to adjust the module operation to maintain a constant voltage output.

대표청구항 ▼

A current sharing power system having a plurality of modules connected together wherein each module comprises, in combination: a power inverter adapted to produce an alternating current output, said power inverter being responsive to an externally produced pulse width signal to vary the width of eac

A current sharing power system having a plurality of modules connected together wherein each module comprises, in combination: a power inverter adapted to produce an alternating current output, said power inverter being responsive to an externally produced pulse width signal to vary the width of each alternating current pulse; current sensing circuit responsive to said alternating current pulse to produce a first current level signal to indicate the current output of the module including said current sensing circuit, said current sensing circuit including means to respond to the current level signal from each other power module coupled thereto to provide a current difference signal indicating the difference between said first current level signal and the average of all said current level signals from each other system module; and pulse width signal producing means responsive to said difference signal to produce said pulse width signal to cause said power inverter to produce wider pulses when said current difference signal indicates said sensed current is smaller than the average of all said sensed currents from each other system module and to produce a narrower pulse when said sensed current is greater than the average of all said sensed currents from each other system module.