Abstract

One-cycle control (OCC) is widely used in many power converter topologies because of its advantages. However, in the control process, OCC uses integration of chopped diode voltage to control the output voltage of the converter where, in the case of the dc-dc buck converter, the chopped diode voltage represents only the input voltage. Thus, it will lead to the nonzero steady state error of the output voltage. Moreover, the output disturbance will have more effect to the converter performance. In this paper, a type-III compensator is designed for improving the performance of one-cycle controlled buck converter. Furthermore, the controller can eliminate both input and output disturbance with zero steady-state error. The simulation results verify the performance of the designed controller.

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