Major Project PPt Presentation

1. Modeling and Simulation
of
The Induction motor
feed by
Matrix converter

2. ac to ac converter
1. Direct converter
(No use dc link)
2. Indirect converter
(Utilize dc link Between two ac systems)
Matrix converters are Direct converter.

3. Matrix Converter
 3 Phase matrix converter consists 9 bi-directional switches.
 Suppression of power harmonics.
 It provides input and output sinusoidal waveforms.
 It is capable of regenerating energy back to the main supply.
 There is no reactive component for storage purpose.
 Four quadrant operation.
 Longer operating life.

4. Modulation Techniques of Matrix
Converter
 Alesina –Venturini modulation technique
or
Optimum Venturini amplitude Modulation (OVAM)
 Scalar modulation technique.
 Space vector modulation technique.
(Used for producing the gating signals)
 indirect modulation technique.
Use for change the voltage Transfer ratio.

5. Optimum Venturini amplitude Modulation
(OVAM) Technique
 This method provides the amplitude of output voltage up
to 86.6% of input voltage.
 Also provides unity fundamental displacement factor at the
input regardless of the load displacement factor.

6. Induction Motor
 The squirrel cage type of induction motor is very popular in case of
variable-speed drives.
 Available in all power ratings.
 Also used for Constant speed applications.
 Needs no extra starting motor and need not be synchronized.
 Low cost and minimum maintenance.
 High reliability and sufficiently high efficiency.

7. Modeling and Simulation

8. Modeling of matrix converter

9. Modeling of Subsystem block

10. Resultant Waveforms
Input Current of matric converter
Output Current of matric converter

11. Input Voltage of matric converter
Output Voltage of matric converter

12. Rotor speed of induction motor
Stator Current of induction motor

13. Electromagnetic torque of Induction motor

14. Conclusions
 Odd/low order harmonics do not contribute the output power of the motor,
they produce additional losses in the machine. These are suppressed by
Matrix converter.
 Harmonic losses reduces the efficiency and cause derating of the motor and
increases torque pulsating.
 Regeneration ability and four quadrant Operation meets the stringent
energy efficiency and power quality.
 Increase input Power factor.