Simulation and control of bus conditioner for a power distribution system of More Electric Aircraft

In a power distributed system of More Electric Aircraft with many loads on the dc or ac bus, there are harmonic and reactive currents when a large load is loaded or unloaded from the bus. The bus conditioner can compensate the harmonic and reactive currents on dc and ac bus in power system. This paper presents a sample of a power distributed system of More Electric Aircraft with an ac bus conditioner. The models of three phase dc/ac and ac bus conditioner are established. The controller of the ac bus conditioner is designed. The stability of the power distributed system is anlysised when the ac bus conditioner is loaded. The simulation results are presented. With certain parameters, the ac bus conditioner can reduce the variable frequency ripple current, shape the voltage waveform of the dc and ac bus and increase the system stability margin.