Title :
A versatile microprocessor based controller for solar tracking
Author :
Saxena, Ashok Kumar ; Dutta, V.
Author_Institution :
Photovoltaic Lab., Indian Inst. of Technol., New Delhi, India
Abstract :
A microprocessor-based solar tracking controller was designed and fabricated. In addition to tracking, the controller is capable of acquiring photovoltaic and meteorological data from a photovoltaic system and controlling battery/load. These features are extremely useful in autonomous PV power systems installed in remote areas for system control and monitoring. Solar tracking can be achieved in closed-loop and open-loop modes, and the controller can provide either six PWM (pulse-width-modulated) signals for a three-phase, 50 Hz AC motor or four step signals for a stepper motor. The controller has been laboratory tested
Keywords :
AC motors; controllers; data acquisition; digital control; electric control equipment; machine control; microcomputer applications; photovoltaic power systems; position control; solar cell arrays; solar cells; stepping motors; tracking systems; 50 Hz; AC motor; PV power systems; PWM; closed-loop; controller; data acquisition; digital control; machine control; meteorological data; microprocessor; monitoring; open-loop; solar cell arrays; solar tracking; stepper motor; three-phase; AC motors; Batteries; Control systems; Meteorology; Microprocessors; Open loop systems; Photovoltaic systems; Pulse power systems; Pulse width modulation; Solar power generation;
Conference_Titel :
Photovoltaic Specialists Conference, 1990., Conference Record of the Twenty First IEEE
Conference_Location :
Kissimmee, FL
DOI :
10.1109/PVSC.1990.111788
