Design and Implementation of a Single Phase Inverter Circuit Essay Example for Free

Design and Implementation of a Single Phase Inverter Circuit Essay Inverters are used to produce constant or variable frequency AC output from a DC source. These inverters can be used for AC applicatio n like driving an induction motor. Such type of inverters in present world are used largely in renewable energy systems to convert DC to AC, example is a PV system where there is a requirement of such type of inverters which can power AC systems such as an induction motor (IM). It is required to produce a pure sinusoidal waveform for the proper functioning of the IM drive. This can be done by incorporating pulse width modulation (PWM) techniques. Technique used in generating a Pulse width modulation is that of the comparison of reference signal which is a sinusoidal waveform as required at the output and a triangular or carrier signal of high frequency. The next section (Section 2) will give a brief detail about the power switches used in the inverters. Section 3 gives the study in detai l of single phase half wave and full wave bridge. In section 4 a detailed discussion about PWM technique is done. This section  also gives the circuit diagram required to generate the PWM using microcontroller. Section 5 shows the development of the swit ching control in details starting from the opto-coupler to the derive circuit. The bootstrap circuit is detailed in section . This is followed by a complete block diagram of the single phase inverter along with its control circuit in section 7. A detailed study on a practical blanking time circuit is done in section 8, followed by the circuit for the opto -coupler and the driver required in the presence of blanking time circuit, this can be seen in section 9. Crasta Francis Austin Movin Page 5 Design and Implementation of a Single Phase Inverter Circuit The next section 10 gives a full circuit diagram implemented in this project to construct a single phase inverter, followed by the actual image of the inverter in section 11. Wiley Sons, 2003 [5] Ned Mohan, â€Å"Power Elect ronics, A First Course†, John Wiley Sons, Inc. [6] EHSANI, M. RAMANI, K. R. 1994. Recent Advances in Power Electronics and Applications . IEEE, p.9 [7] Application Note 9017: Manufacturing Technology of a Small Capacity Inverter Using a Fairchild IGBT . Fairchild Semiconductor. June 2001. p.4 [8] Chong B.: â€Å" Digital Implementation of PWM Generation Circuit and Control for a PV-Converter System†, Laboratory Notes for ELEM 5451 Mini Project Laboratory, University of Leeds, UK, 2012. Crasta Francis Austin Movin Page 56 Design and Implementation of a Single Phase Inverter Circuit [9] Zhang L.: â€Å"Section 2: Power Converters for PV Systems†, Course Notes for ELEC5564M Power Generation by Renewable Sources, University of Leeds, UK, 2011. [10] Datasheet Power MOSFET: â€Å" Design and Application guide for power MOSFET†, Vishay Siliconix, 12 March 2012. [11] J. Holtz, â€Å"Pulsewidth Modulation -A Survey,† IEEE Transactions on Industrial Electronics, Vol. 39, No. 5, Dec. 1992, pp. 410 -420. [12] Datasheet for TD351 Gate driver: â€Å" Design and Application guide for Advanced IGBT/MOSFET Driver†, STMicroelectronics, 2004.