Multi Input ZVS Converter For Renewable Energy

Wong, Jian Loong (2019) Multi Input ZVS Converter For Renewable Energy. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This report discussed about the design and the simulation of a multi input ZVS phase shift full bridge DC to DC converter to overcome the problem that face by renewable energy by using MATLAB/ SIMULINK software. The first problem that need to solve is the unstable and overload output voltage produce by renewable energy that cause load disturbance. So, to solve this problem, firstly phase shift full bridge DC to DC converter have designed to overcome it by using phase shift modulation of the pulse signal of the lagging leg switches respect to leading leg switches. The second is apply ZVS technic to solve the switching losses due to PSM of the pulse signal of the switches to regulate the output voltage. The third is develop a close loop phase shift full bridge DC to DC converter by using PI controller to overcome the fluctuate of the input voltage from the renewable energy that cause load disturbance. The full bridge phase shift ZVS DC to DC converter will choose because it can handle high power and high voltage. The high frequency operation for the use of MOSFET switches also allow the system operate in high frequency in order to reduce the conduction loss hence improve system efficiency. The three objectives have been achieved by using MATLAB/ SIMULINK software which the first objective where design a single phase phase shift full bridge DC to DC converter which can regulate the output voltage by PSM of the pulse signal of the switches when load disturbance occur. Second, the ZVS technic have been carry out to apply in this converter to improve the system efficiency during PSM of the pulse signal of the MOSFET switches and third a controller have been apply to regulate the output voltage automatically by undergo PSM at the pulse signal of the switches when there is fluactuate of the input voltage from the renewable energy.

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