Chapters authored
Application of Input-Output Linearization
Part of the book: Applications of Nonlinear Control
Current‐Controlled SRM Fed by Three‐Phase Boost PFC
In this chapter, firstly, converter types of switched reluctance motor (SRM) are described. Current control structure of SRM, which has six stator and four rotor poles, over an asymmetric bridge converter, is also explained. While feeding SRM by an AC grid, grid voltages have to be converted to DC voltage; to realize this conversion, in order to obtain high power factor and sinusoidal grid current, power factor correction (PFC) circuits must be used. In this study, an asymmetric bridge converter of SRM is fed by three‐phase PFC boost converter that consists of uncontrolled diode rectifier and DC‐DC boost converter with high frequency operation. PFC boost converter is controlled by nonlinear control algorithm. By means of the simulations that are conducted by MATLAB/Simulink, grid voltage and current, current harmonics of each phase, three‐phase currents of phases, flux, and current of SRM are presented. Simulation results show that proposed SRM that is fed by three‐phase PFC boost converter system gives the desired performance, for both grid and SRM side.
Part of the book: Switched Reluctance Motor
Feedback Linearization Control of Interleaved Boost Converter Fed by PV Array
One of the powerful methods of nonlinear control is the feedback linearization technique. This technique consists of input state and input-output linearization methods. In this chapter, the feedback linearization technique, including input state and input-output linearization methods, is described. Then, input-output linearization method is used for output voltage control of interleaved boost converter. Firstly, mathematical model of the interleaved boost converter is derived after that the method is applied. Besides, the interleaved boost converter is fed by a PV array under irradiation level and ambient temperature change. As a result of the simulation study, output voltage control of interleaved boost converter under reference voltage change is realized as desired.
Part of the book: Nonlinear Systems