Abstract
It is important to reduce energy dissipated in power mechatronics such as electric vehicles and injection molding equipments. The present paper discusses a method of minimizing the dissipated energy including the conduction and switching losses of chopper. First, the motion equation of the mechanical system and the dissipated energy are formulated. Optimal velocity and current functions that minimizes the dissipated energy are solved by using the optimal control theory. The obtained dissipated energy is compared to those without considering the losses of the chopper. It is seen from simulations that optimal velocity function with considering the chopper losses can be reduced the total dissipated energy.
