UPEC 2018 53 rd International Universities Power Engineering

UPEC 2018 53 rd International Universities Power Engineering Conference 4 th – 7 th September 2018 Effective Power Management in a Stand -alone PV System khaled Sehil 1 , Mohamed Darwish 2 Electronic and Computer Engineering School of Engineering and Design Brunel University

Outline q Introduction q Current status and Challenges q Proposed placement of the super-capacitor q Result & Discussion q Conclusions

Introduction - Background DC/AC Load Solar Array Charge Controller Inverter Battery

Current Status and Challenges q Current Status − The battery size in a stand-alone PV system is calculated for the average annual data, also for at least three days of island autonomy, as a result: 1. The daily quick changing in PV output is not dependable. 2. The battery life reduced dramatically due to quick charge discharge. q Challenges − Achieving more effective energy management techniques in a standalone PV system by implementing the super capacitor to deal with the rapid change.

Proposed placement of the super-capacitor

Result & Discussion System Energy flow

Result & Discussion SC behaviour

DC- DC Switches Signal

Conclusions q. This paper discusses an incorporation of the supercapacitor as secondary storage unit in a stand-alone PV system. q. Three cases was generated to present and validate the proposed energy management algorithm in the standalone PV system with implementing a super capacitor. q. Super-capacitor behaviour under various load , with higher fluctuation in the generated power by the PV system. q. Fast changing in the load or the generated energy has been belt by the super-capacitor.

UPEC 2018 53 rd International Universities Power Engineering Conference 4 th – 7 th September 2018 Thank You Q? Khaled Sehil