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Space Vector PWM Control Synthesis for an H-Bridge Drive in Electric Vehiclesd Aim: Controlling a Prototype electric vehicle by using Space vector modulation (SVM) PWM techniques with respect to Direction control system. Abstract: This paper deals with a synthesis of Space Vector PWM control methods applied for an Hbridge inverter feeding a Permanent Magnet Synchronous Machine in Electric Vehicle application. First, a short survey of existing power converter architectures, especially those adapted to degraded operating modes is presented. Standard SVPWM control methods are compared with three innovative ones using EV-drive specifications in the normal operating mode. Then, a rigorous analysis of the margins left in the control strategy is presented for a semiconductor switch failure to fulfill degraded operating modes. Finally, both classic and innovative strategies are implemented in numerical simulation; their results are analyzed and discussed. Space vector modulation (SVM): is an algorithm for the control of pulse width modulation (PWM). It is used for the creation of alternating current (AC) PWM waveforms; PRINCIPLE Space vector modulation (SVM) Pulse width modulation (PWM) is a method for binary signals generation, which has 2 signal periods (high and low). The width (W) of each pulse varies between 0 and the period (T). The main principle is control of power by varying the duty cycle. Here the conduction time to the load is controlled. Let for a time t1, the input voltage appears across the load i.e. ON state and for t2 time the voltage across the load is zero. • The average voltage at output is given by Va = Vmax. * Where, TON =Time period for Pulse ON, TOFF =Time period for Pulse OFF WORKING Pulse width modulation is implemented using a microcontroller, dependent on an input value for generating variable pulse widths, for driving motor at variable speed. Therefore, the input value used is given with the help of potentiometer. The 2 terminals of potentiometer are connected to Vcc& GND, resulting in variable voltage in range of 0-5V, in the terminal W of potentiometer. This pin serves as the input for microcontroller. The ATmega8 has inbuilt 10 bit ADC (Analog to Digital Converter), which means it can convert any analog value between 0-5V to digital value of 10 bit resolution. The program for generating results for pulse width is written into microcontroller’s memory using ISP (In System Programmer). Conclusion: So by using this Space vector modulation (SVM) pulse creation technique is an electric vehicle can secure travels with respect to user interface control.