4 Phase Interleaved DC Boost Converter for PEMFC Applications

AbstractProton Exchange Membrane Fuel Cells (PEMFC) is a versatile renewable energy sources that can be used in a wide range of applications. This paper presents a basic principle of PEM Fuel Cell, its operation and control when it connects with the interleaving 4 Phase DC Boost Converter. The power rating of DC Converter in this paper is about 1.2kW., input voltage 26V, output voltage 60V and output current 46 A. The result shows that the operation of 4 Phase Interleaved DC Converter together with 1.2kW of PEM Fuel Cell has a good performance. The efficiency of the overall system is around 85 – 95% when the experiment is set to a constant output voltage

Analysis and control of shunt-compensator for mitigating unbalanced voltages

This paper presents the analysis and the control of shunt-compensator for improving unbalanced voltages of power distribution systems in Thailand.This paper presents the analysis and the control of shunt-compensator for improving unbalanced voltages of power distribution systems in Thailand. The shunt-compensator is connected to the low voltage level in power distribution system. The analysis detail and the design of shunt-compensator obtain by using the voltage vector control (mathematical model with the stationary reference frame and synchronous reference frames). The unbalanced voltages are identified by using positive and negative sequence detection that can be shown in the synchronous reference frame. This method also presents the decoupling control including feed-forward control to compensate both positive and negative sequence component of grid voltage. The power circuit of the shunt-compensator and the distribution network are modeled by Provincial Electricity Authority (PEA) of Thailand that is the same as worldwide standard of power distribution system. By using computer program, the simulation results showed the benefit and the performance of proposed methodology which obviously ensure the performance of shunt-compensator for mitigating the unbalanced voltages