Sliding Mode Control of dc-dc Buck Converter using Typhoon Hardware in Loop Software
Lini Mathew1, Priyanka2
1Lini Mathew, Professor, Department of Electrical Engineering and Head of Department National Institute of Technical.
2Priyanka, Department of Bachelor Kedar Nath Ginni Devi Modi Engineering College Technology, University Ghaziabad. (Uttar Pradesh), India.
Manuscript received on December 01, 2019. | Revised Manuscript received on December 15, 2019. | Manuscript published on December 30, 2019. | PP: 5022-5025 | Volume-9 Issue-2, December, 2019. | Retrieval Number: B3602129219/2019©BEIESP | DOI: 10.35940/ijeat.B3602.129219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In this paper, a small standalone solar powered DC microgrid is designed and analysed. The control technique used here is sliding mode control. The common control technique of controlling dc-dc converter is proportional Integral (PI) controller, which is not able to execute well under variations of load. DC-DC converter is nonlinear and time variant system therefore sliding mode controller can be used for dc-dc converter. DC microgrid model is designed and analysed by simulation using Typhoon HIL to observe the system’s dynamic response in view of load impact and battery charging. The buck converter is designed with PWM (pulse width modulation) based sliding mode controller. The tool chain have processor with ultra low latency and unprecedented execution rate for the converter. Dynamic equations associated with the control logic is derived for buck converter. The control technique is tested for step load changes. Sliding mode controller performance is compared with proportional integral (PI) controller. Fast and robust dynamic response of output voltage is obtained.
Keywords: Buck converter, sliding mode control (SMC), PWM (pulse width modulation), HIL (hardware in loop), DC microgrid.