Energy recycling for electrical AC power source burn-in test

This letter presents a feasible method for electrical ac power source burn-in test. The proposed architecture consists of two power stages. It consumes a lesser amount of energy than the conventional method and provides extra flexibility for the test load. To implement the proposed idea, a simple control strategy and system design is presented in this letter. A case study for an adjustable-speed ac motor drive is demonstrated by means of a prototype experiment to prove its performance and effectiveness.