FPGA Based PWM Control of Induction Motor Drive and its Parameter Estimation

With the invention of rotating machine, speed of the work has peen increased and the world came together with distance and time. The speed of the machine decides the output capability of the machine. For rotating objects the motors are playing basic role. The speed is one of the parameter used in the industrial applications. Motors are used in the industrial applications for the variety of tasks the speed control is key issue in the control industry. The uses of such control devices like motors are widely used in the variety of application having simple and robust structure. The speed control can be done in various ways and for this purpose microprocessor, PC, microcontroller and PLA are used. Some places speed control and parameter change is necessary and in such cases the monitoring the various parameters is very essential. The simulation technique provides the better control implementation of the monitoring. For the automatic operation of the drive the FPGA is better choice with least cost. The FPGA provides better control characteristics with smaller space with proper design considerations. For control strategy the present research work highlight on the PWM scheme with FPGA. The expectation of the control is faster and accurate with least cost. The use of the software and hardware combination always helps to reduce the cost. The design of such expected control is possible through Controller, PLC, PLA, FPGA, etc. In the present research article the digital signals are generated by using the FPGA. The FPGA signals have the control on the pulse width which is used for firing of the inverter. The inverter supplies the power to the drive as per the variation of the PWM. Single phase induction motor control using the simple PWM technique is possible. The complete data acquisition system is presented for control of the drive speed. The efficiency of the drive is also calculated and represented.