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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