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GENERATION

OF HIGHVOLTAGE

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GENERATION OFHIGH VOLTAGE

AC HV

HIGHFREQUENCYAC

POWERFREQUENCY AC

DC HV IMPULSE

SHORT PERIODIMPULSE

LONG PERIODIMPULSE

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Generation of HV DC

Half and Full wave rectifier circuits.

Voltage doubler circuit.

Cockcroft-Walton voltagemultiplier circuit.

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Half wave rectifier

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Full wave rectifierCentre-tapped FW

rectifierBridge full wave

rectifier

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Voltage multiplier

Cockcroft-Walton circuit Named after the British and Irish

physicists John Douglas

Cockcroft and Ernest ThomasSinton Walton.

This circuit design was used topower the particle accelerator.

CW multiplier gives an outputvoltage of more than one millionvolts and load current of 30 mA.

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Video of Cockcroft-Walton generator

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Generation of HighAlternating Voltage

CascadeTransformer.

Resonant Transformer.

Tesla coil(for high frequency AC).

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Cascade Transformer

Transformers are used in cascade to achieve highvoltage rating of range 100kV-1MV.

Isolation transformers are used to provide galvanicisolation between stages of step-up transformers.

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Tesla coil

High voltages of highfrequency are generated.

The secondary voltageranges between 500 to1000kV.

The transformer used is aircored and usually immersedin oil.

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Video of Tesla coil

G f I l

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Generation of Impulsevoltage

Multistage Impulse generators-Marx circuit.

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Impulse Generator

An IG is an electrical

apparatus which producesvery short high-voltage orhigh-current surges.

High impulse voltages areused to test the strength ofelectric power equipmentagainst lightning andswitching surges.

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Marx multistage Impulsegenerator

A Marx generator is an electrical circuit first described byErwin Otto Marx.

A number of capacitors are charged in parallel to a givenvoltage, and then connected in series by spark gap

switches. Output voltage= V x N,

V=voltage of each stage,

N=number of stages.

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Marx generator video

El i

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Electrostatic generatorsVan de Graff generator

In electrostatic machines,charged bodies aremoved against electrostatic fields,such thatmechanical energy is converted into electrical

energy.

Van de Graff generators,generate high voltagewith low current.

Works on the principle of charge transfer.

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Video of Van de Graffgenerator

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Source:

www.youtube.com

www.hilaroad.com

www.rimstar.org

http://www.youtube.com/http://www.hilaroad.com/http://www.rimstar.org/http://www.rimstar.org/http://www.rimstar.org/http://www.hilaroad.com/http://www.hilaroad.com/http://www.youtube.com/http://www.youtube.com/

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THANK YOUPresented by: Girish G

MD Niyamath Khan

Nishanth B.N

Guided By Ms. B C Sujatha