Research On One-cycle Controlled DC/DC Converters

One-Cycle Control technique is conceived to control the duty-ratio d of the switch in real time such that in each cycle the average value of the chopped waveform at the output diode of the switch rectifier is exactly equal or proportioned to the control reference. It can eliminate automatically instantaneous error in every one cycle and the error belonging to the former cycle can't be brought to next cycle. So such control technique overcome the defects of traditional PWM control ways and have the merits of rapid response .. invariable switch frequency, easy to realization and simple control circuit. Additional, One-Cycle Control can also optimize the response of system, reduce aberrance and restrain the disturbance of power supply.The thesis expounds and compares comprehensively on the modes of Voltage Control, Current Control and One-Cycle Control. The theory, disturbance-resistant and stability of One-Cycle Control are analyzed in detail.This thesis does the theoretical analysis, simulation and experimental research of DC/DC converter on operation principle, control strategy and parameter design . Analyzing and researching the theory of steady state and the design of key parameters of Half-bridge DC/DC converter based on One-Cycle Control. This feasibility of this scheme is verified by simulation.The design and principle experiment of Half-bridge DC/DC converter based on One-Cycle Control is carried out...