NEW DESIGN OF INVERTER.(TWO IN ONE INVERTER) pankajchaudhary582@gmail.com

1. A
PRESENTATION
ON
“DESIGN OF INVERTER”
UNDER THE SUPERVISION OF: PRESENTED BY:
Miss. PUJA SRIVASTAVA PANKAJ CHAUDHARY (24823)
(LECTURER)
DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING
SANJAY GANDHI INSTITUTE OF ENGINEERING & TECHNOLOGY
NEHRU GRAM BHARATI UNIVERSITY, ALLAHABAD 1

2. CONTENTS
 INTRODUCTION
 OBJECT OF THE PROJECT
 BLOCK DIAGRAM
 CIRCUIT DIAGRAM
 POWER RATING
 INPUT AND OUTPUT VOLTAGES
 COMPONENTS
 APPLICATION
 CLASSIFICATION OF INVERTER
 CHARACTERISTICS OF A GOOD INVERTER
 BILL OF ENGINEERING MEASUREMENT AND EVALUATION
 CONCLUSION
 PROJECT SETUP
 REFERENCES
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3. INTRODUCTION
 An inverter is a device that changes or inverts direct current (DC) input
to alternating current (AC) output.
 It does not "create" or "make" electricity, just changes it from one form
to another. DC input is changed to AC output.
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4. OBJECT OF THE PROJECT
 To adjust power according to load.
 To adjust battery charging current according to battery.
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5. TRANSFORMER-
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BLOCK DIAGRAM
12 volts DC
battery Inverter 230 volts AC

7. 7
Inverter
Inverter
DIRECT CURRENT
ALTERNATING CURRENT

8. CIRCUIT DIAGRAM
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9. POWER RATING
Amount of power (watts) an inverter can provide to the
loads-
 Continuous Power Rating: Amount of power (watts) an inverter can
continually provide to the loads.
 Surge Power Rating: Amount of power (watts) an inverter can
provide to loads for short periods of time.
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10. INPUT AND OUTPUT VOLTAGES
Input voltage the inverter is designed to accept-
 Battery based inverter accept nominal voltage of 12 volts DC.
Output voltage-
 Output voltage is usually 230 volts AC.
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11. COMPONENTS
TRANSFORMER-
 A transformer is a device that changes the alternating potential
difference from one value to another value it may be smaller or
greater by using the principle of electromagnetic induction.
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12.  On a step-up transformer there are more turns on the secondary coil
than the primary coil. The induced voltage across the secondary coil is
greater than the applied voltage across the primary coil or in other
words the voltage has been “stepped-up”.
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STEP-UP TRANSFORMER-

13. MOSFET-
 A MOSFET is a voltage controlled majority carrier device. As the name
suggests, movement of majority carriers in a MOSFET is controlled by
the voltage applied on the control electrode (called gate) which is
insulated by a thin metal oxide layer from the bulk semiconductor
body. The electric field produced by the gate voltage modulate the
conductivity of the semiconductor material in the region between the
main current carrying terminals called the Drain (D) and the Source (S).
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14. RELAY-
 A relay may also be called an “electromagnetic switch”.
 Relays use a “low amperage circuit” to control a “high amperage
circuit”.
 The low amperage circuit controls an electromagnetic device.
 The electromagnetic device “closes/opens” the high amperage circuit.
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15. IC SG3524N-
 The SG3524N incorporate all the functions required in the construction
of regulating power supply, inverter, or switching regulator on a single
chip. They also can be used as the control element for high-power-output
applications.
 The SG3524N is a fixed-frequency Pulse-width-modulation voltage
regulator control circuit. The regulator operates at a fixed regulator
and frequency to control the circuit. It is programmed by one timing
resistor, RT, and one timing capacitor, CT. 15

16. APPLICATION
 DC Power source utilization
 Uninterruptible power supplies
 Induction heating
 Variable-frequency drives
 Electric vehicle drive
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DC POWER SOURCE UTILIZATION-
 DC power source utilization applications include use of DC in motor
vehicles and from batteries to power.
UNINTERRUPTIBLE POWER SUPPLY-
 An uninterruptible power supply (UPS) uses batteries and an inverter to
supply AC power when main power is not available.

18. INDUCTION HEATING-
 Inverters converts low frequency main AC power to a higher frequency
for used in induction heating.
 To do this, AC power is first rectified to provide DC power to high
frequency AC power.
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19. CLASSIFICATION OF INVERTER
BASED ON CHARGING PROCESS-
 Power Inverter- A power inverter converts DC power to stand AC
power.
 Solar Inverter- A solar inverter is a type of electrical inverter that is
made to change the direct current electricity from a photovoltaic
array into alternating current.
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20. CHARACTERISTICS OF A GOOD INVERTER
 Its output voltage wave form should be sinusoidal.
 Its gain should be high.
 Its output voltage and frequency should be controllable in the desired
voltage.
 The power required by its controlling circuit should be minimum.
 Its overall cost must be minimum.
 Its working life must be long.
 The semi conductor device used in the inverter should be minimum
switching and conduction losses. 20

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BILL OF ENGINEERING MEASUREMENT AND
EVALUATION

22. CONCLUSION
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 Inverter is a simple but versatile circuit.
 It is extensively used as buffer in the output stage to reduce the
loading effect of the previous stage.
 The battery backup will improve, not harmful charging and adjusts
power according to its implementations in the inverter.

23. PROJECT SETUP
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24. REFERENCES
 Ashfaq Husain “Electrical Machine” Second Edition,2012.
 Bedford, B.D, Haft, R.G et al. (1964) “ Principle of inverter circuits”
 Dr.Ulrich Nicolai, Dr. Tobias Riemann, Prof.Jurgen Petzoldt, Josef Lutz,
“Application manual IGBT and MOSFET power modules”.
 Sunil S. Rao.“Switchgear Protection & Power Systems” Eleventh Edition,
2013
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