This presentation consider as general subject on inverter circuits and it takes only about 10 Min. to presente it in front of my class mates. this presentation talkes about the definition of the inverter circuit, it's applications, SPWM technique and finally show the circuit diagram and output waveform of single phase half brdige inverter and single phase full bridge inverter.

1. INVERTER
CIRCUITS
Hasan Abdulhadi Turki
MSC in electrical engineering
University of Baghdad

2. Overview
1. Definition of inverter
2. Sinusoidal pulse width modulation technique
3. Single phase half bridge inverter
4. Single phase full bridge inverter

3. Learning outcomes
At the end of the lecture, student should be able to:
1. State the operation and characteristics of Inverter.
2. Use different technique for analyzing and designing
of DC to AC Converter.

4. Introduction
• Inverters are circuits that converts dc input
voltage to a symmetric ac output voltage
by which both magnitude and frequency
can be controlled.
• Applications :
– adjustable speed ac motor drives,
uninterruptible power supplies (UPS),
and ac appliances run from an
automobile battery.

5. Circuit structure and output
waveform

6. Sinusoidal pulse width modulation
technique

7. Types of SPWM
1-Biploar switching

8. 2-Unipolar switching

10. Single phase half bridge inverter

11. Single phase half bridge inverter
S2
S1 S3
S4

12. Conclusion
• Definition of inverter, circuit structure and output waveform.
• Sinusoidal pulse width modulation technique and it’s types (Bipolar
switching and Unipolar Switching).
• Single phase half bridge inverter.
• Single phase full bridge inverter.

13. Reference
1- Muhammad H. Rashid, “Power Electronics, Circuits,
Derives and Applications”, Pearson Education Inc. 2004.