For large capacity of power system with parallel operation of multiple power sources

the load distribution of many power monomers is realized by current sharing control strategy. Although current sharing control could increase the reliability of power system

the total efficiency of power system during working process could not be achieved optimally because of difference among the power monomers efficiency performance

which causes a waste of energy. Compound efficiency optimization control method aims at increasing power system operation efficiency. In the dynamic adjustment process

the current sharing technology is used to ensure the safe operation. In the steady operation

the optimal control of the overall efficiency in the power supply system can be achieved through the optimization of the load distribution scheme

and the performance of the power system can be improved.