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《Science Technology and Engineering》 2014-17
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Advanced Low Ripple Cockcroft-Walton Voltage Multiplier Circuit and Its Characteristics Research

LI Zi-cheng;YUAN Bao-shan;Engineering and Technical College of Chengdu University of Technology;Southwestern Institute of Physics;  
The ripple voltage and voltage drop of multilevel voltage multiplier are affected by the 2th or 3nd power of stage number respectively. In the case of increasing in the stage,the ripple voltage and voltage drop would significantly increase. On the basis of the lowest level voltage double circuit,using shift and the phase superposition 2N time voltage multiplier circuit was realized. By using three-phase independent connection group of threephase transformer,output winding is connected to DC double voltage circuit. 12 times voltage circuit is built by parallel input,serial output to realize 6 pulses periodic superposition. Through the overlay,the pulsating amplitude is greatly weakened. The theoretical analysis and estimation is made for ripple and voltage drop,and comparison to the typical and symmetrical Cockcroft-Walton multistage voltage multiplier circuit is carried out. Results show that the circuit can significantly reduce the voltage ripple and voltage drop,and significantly reduce the output voltage steady set-up time.
【Fund】: 国家自然科学基金(11375055);国家自然科学基金(11075048);国家自然科学基金(10575033)资助
【CateGory Index】: TM461
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