International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
DESIGN AND SIMULATION OF GENERATION OF HIGH DC VOLTAGE USING COCKCROFT WALTON GENERATOR Pankaj Bhutange¹,Nikita Hadke²,Aditi Kathane³,Anirudha Marothiya4,Anurag Khergade5 1UG
Student [EE], Dept. of EE, S B Jain Institute of Technology Management and Research, Nagpur Student [EE], Dept. of EE, S B Jain Institute of Technology Management and Research, Nagpur 3UG Student [EE], Dept. of EE, S B Jain Institute of Technology Management and Research, Nagpur 4Associate Professor, Dept. of EE, S B Jain Institute of Technology Management and Research, Nagpur 5Associate Professor, Dept. of EE, S B Jain Institute of Technology Management and Research, Nagpur 2UG
-------------------------------------------------------------------------***--------------------------------------------------------------------In this paper, the main importance is given on designing of Cockcroft Walton Generator circuit, simulation and its hardware implementation. It is a six stage voltage multiplier circuit having 230V AC as an input supply and 2 kV DC as an output voltage. The entire work is categories into two main stages. First stage deals with generation of high DC voltage using multiplier circuit and second stage deals with conversion of high DC voltage into standard pulse. After completion of both stages on MATLAB platform, hardware implemented of circuit is done in the laboratory.
Abstract- This work describes the details of high voltage D.C. power supply where output is 2 kV, whereas its input voltage is 230 V of sinusoidal waveform. In this study, we have designed a prototype of high voltage power supply and simulation work has been done by using MATLAB Version 7.0 software. Key words -Cockcroft Walton Generator, high voltage DC, wave shaping resistor, MATLAB
1. INTRODUCTION There are many uses of high voltage DC power supply. High DC voltage is mainly used in the industries where the requirement of high dc power is necessary. High DC voltage power is widely used in research work in the field of applied physics and for testing purpose in industries. High voltage is used for dielectric and insulation testing of electrical equipments at power frequency. There are many applications of High voltage DC power in electrical engineering such as electron microscope, x-ray, electrostatic precipitators, particle accelerator, etc[1]. Dielectric behaviour of electrical equipments can be tested by giving high voltage DC supply as a input to them, where the surviving capacity of equipment can be tested at all conditions. The voltage given to the equipment should be greater than the normal DC voltage to find out equipment’s sustaining capability of voltage and decide the voltage margin for the particular equipment.
2. VOLTAGE MULTIPLIER CIRCUIT
As the name suggests, the Cockcroft-Walton is a voltage multiplier circuit which has a multiplication factor of two [5]. A voltage multiplier is an electrical circuit that converts low AC voltage into high DC voltage.It is made of a voltage multiplier ladder network of capacitors and diodes to generate high voltages. The voltage multiplier however, is a special type of diode rectifier circuit which produce an output voltage greater than the applied input voltage. In most of the cases voltage multipliers are same as rectifier as they convert AC to DC voltages which can be use in electrical and electronic circuit applications such as in microwave ovens, high voltage test equipments etc where it is necessary to have very high DC voltages generated from a low AC supply.
The circuit Cockcroft Walton generator or voltage multiplier is an electric circuit which generates DC power at high voltage. This circuit was discovered much earlier by Heinrich Greinacher in 1919[1].. The circuit got named after the British and Irish physicist Jhon Douglas Walton and Earnest Thomsan Walton, who first used this circuit in 1932 to power there particle accelerator [1].
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