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Modified sliding mode synchronization of typical three-dimensional fractional-order chaotic systems

In this paper, a modified sliding mode control scheme is proposed to realize complete synchronization of a class of three-dimensional fractional-order chaotic systems. By constructing the suitable sliding mode surface with fractional-order derivative, a single-state sliding mode controller is designed to realize the asymptotical stability of synchronization error system. Compared with the existing results, the main results in this paper are more reasonable and rigorous. Simulation results show the effectiveness and feasibility of the proposed sliding mode control method.

Design of energy feedback mode wireless charging system for electric vehicles

With the help of bi-directional wireless power transfer technology, electric vehicle (EV) not only can get power from the grid, but also can supply surplus energy to gird or home when power consumption peaks or power outage. A wireless electric vehicle charging system based on the inductively coupled power transfer (ICPT) technology is presented in this paper. The proposed system can realize either charging or energy feedback mode. The equivalent circuit and operating principle are given firstly. Then, a bi-directional power regulator is introduced and the control mode for line-connected inverter and the parameter design are discussed. A simulation system is built in the Simulink, and the feasibility of the system is proved by the simulation results.

Study on dynamical control of bi-directional Inductive Power Transfer system

For Inductive Power Transfer (IPT) system, the bi-directional power transfer mode is designed for energy feedback from receiver to transmitter. It will be helpful to improve system efficiency in high power application. In order to realize power flow from low voltage side to high voltage side, the paper gives voltage gain analysis method. On the basis, aiming at the power flow control, the paper proposes a dynamical control method. Based on switching between energy injection and free-running mode, the there is no needed of additional auxiliary circuit. As the control method is only based on logistical computing, the control method is simple and easy for implementation. Finally, simulation and experimental results verify the control method.