The document presents information on a PWM rectifier. It discusses that a PWM rectifier is an AC to DC power converter using controlled semiconductor switches. It has features like bi-directional power flow, nearly sinusoidal input current, unity power factor regulation, and low harmonic distortion. The document includes a circuit diagram of a PWM rectifier and mentions it can be a current or voltage type. Advantages are listed as reduced harmonics and controlled output voltage. Future applications are in traction and as an active filter. The future scope is reduced input harmonics and improved power factor for PWM rectifiers.

1. Presentation on
PWM Rectifier
DEPARTMENT OF ELECTRICAL ENGINEERING
RAJKIYA ENGINEERING COLLEGE
GUIDED BY:-
ANKUR SRIVASTAVA
(Asst. Professor)
EE REC Ambedkarnagar
SUBMITTED BY:-
PULKIT KUMAR (1473720025)
OM PRAKASH (1473720021)
TARUN KUMAR (1473720043)

2. Contents
 Introduction
 Features of PWM rectifier
 Circuit Diagram of PWM rectifier
 Simulink Model
 Types of PWM rectifier
 Advantages
 Future scope

3. Introduction
PWM rectifier is
an AC to DC power converter, that is
implemented using forced commutated
power electronic semiconductor
switches.
Conventional PWM converters are used
for wind turbines that have a permanent-
magnet alternator.

4. Features of PWM Rectifier
 Bi-directional power flow,
 Nearly sinusoidal input current,
 Regulation of input power factor to unity,
 Low harmonic distortion of line current (below5%),
 Adjustment and stabilization of DC link voltage (or
current),
 Reduced capacitor (or inductor) size due to the
continuous current,
 Properly operated under line voltage distortion and Line
frequency variations

5. Circuit Diagram of PWM
rectifier

6. Simulink Model

7. Type of PWM Rectifiers
Current rectifiers
 The main advantage is that the rectified
voltage is regulated from zero.
 They are suitable for work with DC loads
(DC motors, current inverters).
Voltage rectifiers
 The rectified voltage on the output is
smoother than the output voltage of the
current type rectifier.

8. Advantages
Its used to reduce of higher order
harmonics.
It also makes it possible to control
the magnitude of the output
voltage.

9. Applications
Used as an input rectifier for an indirect
frequency converter.
It is useful mainly in traction.
 It can be used as an active filter.

10. Future Scope
 New recommendations and future standards
have increased the interest in power factor
correction circuits and there are multiple
solutions to make line current is sinusoidal.
 Future PWM rectifier will be of reduced input
harmonics and improved power factor.

11. REFERENCES
 www.electrical4u.com
 www.studyelectrical.com/2013/11/pwm rectifier
 www.google.com/pwm rectifier
 www.wikipedia.com/retifier
 npetl.iitm.ac.in
 Books:P .S Bhimra, Nagrath & kothari

12. THANK YOU