Hybrid Loop Controlled Dual Axis Mechanical Solar Tracking Systems and MPPT for Nano/Micro Grid Applications
Gorijala Anitha1, N. Prema Kumar2
1Aravelli S.L.K. Gopalamma, Research Scholar, Department of EE, AUCE (A), Andhra University, Visakhapatnam (Andhra Pradesh), India.
2Dr. R. Srinu Naik, Assistant Professor, Department of EE, AUCE (A), Andhra University, Visakhapatnam (Andhra Pradesh), India.
Manuscript received on 28 September 2019 | Revised Manuscript received on 10 November 2019 | Manuscript Published on 22 November 2019 | PP: 796-801 | Volume-8 Issue-6S3 September 2019 | Retrieval Number: F11510986S319/19©BEIESP | DOI: 10.35940/ijeat.F1151.0986S319
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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: This paper emphasizes the important role of solar tracker systems in Micro/Nano grid level applications. Basically mechanical and electrical type trackers are different in operation but they are similar in way of tracking of solar energy. Mechanical trackers (Dual axis solar tracking system) are widely used where space is less and quality is more and with fixed panels solar MPPT is adoptable. Hybrid loop control which controls the relative motion of solar tracking system (STS) during the day as per the position of sun. Hybrid loop control (HLC) is effective rather than open and closed loop systems due its mode of control using sun position algorithm and sensors based as per the requirement and environmental conditions. Most commonly used sensor based trackers takes feedback to adjust the panel position in such a way to track the sun, but the situation when the sky is cloudy creates problem in performance of the system. The estimated accuracy is very close to ±0.0003º but it depends on the irradiation coming from sun. So, Sun tracking system by using solar position algorithm with accuracy is required in mechanical solar trackers and maximum power point tracking in electrical trackers. In order improve the efficiency of whole solar tracking system, we incorporated both open and closed loops i.e., hybrid loop control which plays important role to improve the overall performance. In view of that we incorporated both open and closed loops i.e., hybrid loop control. Here we presented Maximum power point tracking(MPPT) which is electrical tracking system simulated in MATLAB environment and also presented mechanical type of tracking system It is facilitated by using Programmable logic controller (PLC) to access more input/output controls and simulation has been done in CODESYS software using ladder logic programming.
Keywords: HLC, PLC, CODESYS Software, MATLAB Software, MPPT, STS, DASTS (Dual Axis Mechanical Solar Tracking System).
Scope of the Article: Nano Ubiquitous Computing