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ARTICLE
Year : 2011  |  Volume : 1  |  Issue : 1  |  Page : 37-42

Performance Analysis of Symmetric Multistage Voltage Multipliers


1 Department of Electrical and Electronics Engineering, Hirasugar Institute of Technology, Nidasoshi - 591 236, India
2 Department of Computer Science and Engineering, Hirasugar Institute of Technology, Nidasoshi - 591 236, India

Correspondence Address:
H R Zinage
Department of Electrical and Electronics Engineering, Hirasugar Institute of Technology, Nidasoshi - 591 236
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0976-8580.74555

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A performance study of a 3-phase symmetric Cockcroft-Walton (CW)-multistage voltage multiplier (VM) is proposed. It consists of 1 smoothing column and 6 oscillating columns. The oscillating columns are connected to a 3-phase power through center-tap transformers. The capacitors of the smoothing column are charged 6 times per cycle by 6 oscillating columns and are discharged 6 times through the load, unlike the conventional symmetric VM in which they are charged and discharged twice per cycle. The 3-phase symmetric structure completely eliminates the first 5 harmonic components of load-generated voltage ripple. Theoretic analysis indicates that the proposed 3-phase symmetric CW-VM has one-third the voltage ripple and voltage drop of the conventional single-phase symmetric CW-VM. Simulation results of the proposed 3-phase symmetric CW-VM as well as those of the conventional single-phase symmetric CW-VM are presented. A comparison shows that the 3-phase symmetric CW-VM has significantly less voltage ripple, half the voltage drop, and a 4-fold increase in the output power over the conventional single-phase symmetric CW-VM.


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