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Deadbeat controller with phase corrector for 400-Hz inverter used in ground power units of aircrafts

Publication Type : Conference Paper

Publisher : 2015 International Conference on Technological Advancements in Power and Energy (TAP Energy),

Source : 2015 International Conference on Technological Advancements in Power and Energy (TAP Energy), IEEE, Kollam, India (2015)

Url : https://ieeexplore.ieee.org/document/7229604

Keywords : 400-Hz inverter, A-D conversion, AC voltage regulation, aerospace control, Aircraft, aircraft control, aircraft GPU, aircraft ground power unit, aircraft power systems, analogue-digital conversion, deadbeat controller, Delays, digital control, digital controller, digital processor, disturbance decoupling network, disturbance rejection capability, Fourier Analysis, frequency 400 Hz, Inverters, linear load, Linear systems, load regulation, MATLAB, medium frequency PWM inverter, nonlinear control systems, Nonlinear load, Phase corrector, phase corrector scheme, phase delay problem, Phase measurement, power system faults, power system reliability, pulse width modulation inverter, PWM invertors, SPWM control strategy, three phase bridge circuit, time delay compensation, Voltage control

Campus : Amritapuri

School : School of Engineering

Department : Electrical and Electronics

Year : 2015

Abstract : The digital controller faces a severe phase delay problem in medium frequency inverters while updating the pulse width modulation (PWM) of the inverter. In this paper, a digital controller for maintaining the phase balance and ac voltage regulation of a 400-Hz inverter for the ground power unit (GPU) using Deadbeat control is presented. The disturbance decoupling networks are provided along with the Deadbeat controller to give good disturbance rejection capability and improve the robustness towards the load variations. However, the performance of the digital controller is affected by the sampling, A/D conversion and the execution of the programs in digital processors. To improve the performance, the time delay compensation is done by providing a phase corrector scheme. The difference in phase is measured by Fourier analysis, and the compensation is provided at the reference sinusoidal waveform of the SPWM control strategy. Simulation is done on MATLAB/Simulink platform and the waveforms for single phase as well as three phase bridge circuits are obtained for linear as well as non-linear loads.

Cite this Research Publication : D. Manohar and P.N. Seema, “Deadbeat controller with phase corrector for 400-Hz inverter used in ground power units of aircrafts”, in 2015 International Conference on Technological Advancements in Power and Energy (TAP Energy), Kollam, India, 2015.

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