Abstract

Linear controller design for a large dc gain converter

Highlights

  • Cascading two or more boost converters can be used to obtain a higher conversion ratio but this method needs a more complex controller (Rahimi and Emadi, 2009)

  • When switch is closed (Fig. 2), L is charged by voltage source, D2 is forward bias while D1 and D3 are reverse bias

  • C1 and C2 are charged very quickly since there is no resistance in their path except of parasitic resistances

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Summary

Introduction

Cascading two or more boost converters can be used to obtain a higher conversion ratio but this method needs a more complex controller (Rahimi and Emadi, 2009). Plenty of high voltage gain topologies has been introduced Speaking, using derivative term is not so common in power electronics converters control. A P or PI controller is all that is required. This paper designs a controller for one of the recently published topologies (Li et al, 2015)

Working principles of large DC gain step-up DC-DC converter
Small signal model extraction
6: Pole-zero diagram
Conclusion

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