Active Switched Capacitor Network in High Gain DC-DC Converter with PI Controller
Sowmya D1, Dhanalakshmi R2

1Sowmya D*, 2nd year PG student, power Electronics, Dayananda Sagar college of Engineering, Bangalore, India.
2Dr. Dhanalakshmi R, Professor, Electrical and electronic department, Dayananda Sagar, college of Engineering, Bangalore, India. 

Manuscript received on June 01, 2020. | Revised Manuscript received on June 08, 2020. | Manuscript published on June 30, 2020. | PP: 969-973 | Volume-9 Issue-5, June 2020. | Retrieval Number: E9959069520/2020©BEIESP | DOI: 10.35940/ijeat.E9959.069520
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Abstract: In this paper, PI controller in the active switched capacitor network is employed to achieve robust control under disturbance by maintaining sustained output voltage for varying input voltage. Active switched capacitor in the high gain DC–DC circuit efficiently increases voltage gain due to the combination of LC network with minimum duty cycle. The proposed circuit is the modification of typical high gain DC converter and modified network is simple in structure due to reduce in number of switch components and the voltage stress on the capacitor, diodes and across switches are reduced compared to base network. This paper presents the design, operation and analysis of the modified topology and the performance comparison with base converter is presented. Simulation is carried out using MATLAB software for the proposed system with and without PI controller and variation in the output voltage between both the circuits is tabulated and comparative analysis is discussed. 
Keywords: High gain DC-DC network, active switched capacitor network, voltage gain, voltage stress, PI control.