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Study on Solar Tracker Control Method using AC Motor and CdS Sensor

AC 모터 및 CdS 센서를 이용한 태양 추적 장치 제어 방법에 관한 연구

  • Kim, Bo-Heon (Division of Computer Engineering, Kongju National University) ;
  • Kim, Hwang-Rae (Division of Computer Engineering, Kongju National University)
  • 김보헌 (공주대학교 컴퓨터공학부) ;
  • 김황래 (공주대학교 컴퓨터공학부)
  • Received : 2016.05.27
  • Accepted : 2016.11.10
  • Published : 2016.11.30

Abstract

Recently, the solar tracker has been used to improve the efficiency of solar energy. Solar tracking technologies are classified into the sensor-based method, the program-based method, and the hybrid method. Solar trackers using an AC motor and CdS sensor are low in cost, but the precision of the positions is low, owing to the inertia of the motor and the scattering of sunlight. To compensate for the low precision, we implement a CdS sensor module and propose an AC motor control method using error value. To evaluate the performance of the solar tracker, we implemented a solar water heater. From the experimental results, the solar tracker can achieve ${\pm}2mm$ accuracy for sun, can satisfy ${\pm}15mm$ as a limited error value, and provides a 32% performance enhancement in KSB8202 criteria.

Keywords

Solar energy;Solar tracker;CdS sensor;AC motor;Solar water heater

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