Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Improving the performance of PV system using the N-IC MPPT methods

N-IC MPPT방법을 이용한 태양광 발전시스템의 성능개선

  • Seo, Tae-Young (Sunchon National University, Department of Electric Control Engineering) ;
  • Ko, Jae-Sub (Sunchon National University, Department of Electric Control Engineering) ;
  • Kang, Sung-Min (Sunchon National University, Department of Electric Control Engineering) ;
  • Kim, Yu-Tak (Sunchon National University, Department of Electric Control Engineering) ;
  • Chung, Dong-Hwa (Sunchon National University, Department of Electric Control Engineering)
  • 서태영 (순천대학교 전기제어공학과) ;
  • 고재섭 (순천대학교 전기제어공학과) ;
  • 강성민 (순천대학교 전기제어공학과) ;
  • 김유탁 (순천대학교 전기제어공학과) ;
  • 정동화 (순천대학교 전기제어공학과)
  • Published : 2015.07.15
Download PDF
⟨ Previous Next ⟩

Abstract

This paper proposes adaptive incremental conductance(A-IC) algorithm for maximum power point tracking(MPPT) control of photovoltaic. Conventional Perturbation & Observation(PO) and IC MPPT control algorithm generally uses fixed step size. A small fixed step size will cause the tracking speed to decrease and tracking accuracy of the MPP will decrease due to large fixed step size. Therefore, this paper proposes N-IC MPPT algorithm that adjust automatically step size according to operating conditions. To improve tracking speed and accuracy, when operating point is far from maximum power point(MPP), step size uses maximum value and when operating point is near from MPP, step size uses variable step size that adjust according to slope of P-V curve. The validity of MPPT algorithm proposed in this paper prove through compare with conventional IC MPPT algorithm.

Keywords