New Control Techniques Electric and Hybrid Vehicle Drive System with Induction Motor Drives

The paper present’s a survey of the wheel vehicles drives with electric and hybrid drive system. For electric and hybrid vehicle applications, wheels motor and magnetic circuits cutting motor drives, represented a new attractive solution for their lightness and compactness. The wheels are directly driven by the electric motor, and the gears are not necessary anymore. An alternating solution of two induction motor drive system is application of twin rotor induction motor TRIM in a hybrid wheel vehicles. In the modern drive system can be also applied new solution of the traction motor – induction or synchronous motor with cutting stator and cutting rotor magnetic circuits. The mathematical model of the TRIM traction motor supplied with IPM inverter with different control techniques are presented in the paper. Induction motor drive system applied in modern hybrid vehicles, insensitive to parameter and operating condition change, can be achieved using modern control techniques. In electric and hybrid vehicle are applied: Fuzzy Logic Mode Control (FLMC), Sliding Mode Control (SLMC), and Direct Power and Torque Control for Space Vector modulated inverter (DPTC SVM). In the special solution of the hybrid vehicle are also applied a Random Switching Frequency Modulation. Control algorithm affirmed high dynamic parameter of the wheel vehicle and limitation of energy consumption are presented in the paper. In drive systems with minimization of high harmonic in supply current and voltage of the power supply, has been applied a random modulation mode system with switching frequency. Theoretical analysis of special construction drive systems with a random modulation technique is described in the paper. The new method control of induction motor in hybrid vehicles are also compared with random switching frequency modulation and with fixed switching frequency modulation. Some variants of the adaptive control system: speed and current adaptive control system and also sliding adaptive control system are applied in the wheel hybrid vehicles. Adaptive controller and controller realized of random modulation techniques are based on DSP controller. The highly dynamic motor control system should assured: energy-saving work system, optimal control of the petrol and electric motors, and realization of the local and global diagnostics procedures and monitoring procedures of the wheel hybrid vehicles. Some results of the computer simulations performed for mathematical model of the hybrid drive system for specifically work states are presented in the paper. Voltage, current and acoustic noise spectra are used for comparison and it’s concluded that two of techniques are especially useful at lower fundamental frequencies. The proposed in the paper control method can substitute classic random modulation techniques with variable switching frequencies in application in electric and hybrid drive system. Some results of numerical calculation of the traction motor drive system were verified of the laboratory experiments performed for laboratory model of the hybrid wheel vehicles. New energy-saving inverter fed motor for electric vehicle drive systems makes possible energy sparing traction drive system design. Microprocessor-based hierarchical control systems ensure automatic drive motor control, contact less power supply system operation and implementation of complex control algorithms (minimizing voltage and current higher harmonics), power dissipation, and ensuring suboptimum control for normal and emergency operation and drive system diagnostics