It refers to a photovoltaic power generation system without direct light energy into electrical energy by heat during power generation system using the photovoltaic effect of a semiconductor and the interface energy directly into electrical energy technique. Its main component is a solar cell, a battery, and an inverter controller. Which is characterized by high reliability and long service life, do not pollute the environment, but also independent power generation and network operation.
(1) a photovoltaic cell: a photoelectric conversion.
(2) Controller: acting on the control of the overall system. Controller type used in photovoltaic power generation system a lot, such as 2-point controller, multiple sequence controller, intelligent controller, high-power tracking charge controller, a large China's current use are designed for simple controller, intelligent the controller for a communication system, and only the larger photovoltaic plant.
(3) Inverter: the PV module DC to AC power conversion emitted.
(4) combiner box: a certain number, the same size of photovoltaic cells in series to form a photovoltaic tandem, then the bus access protection box plurality of photovoltaic tandem photovoltaic parallel bus inside the bus photovoltaic mine after, through the controller, DC power distribution cabinet, photovoltaic inverter, AC power distribution cabinets, supporting the use of so as to constitute a complete photovoltaic system, with the electricity grid.
(5) The inverter DC: Because of its AC-DC conversion function, and therefore the most important indicator member reliability and conversion efficiency. Grid-connected inverter with maximum power tracking techniques, to maximize the photovoltaic cell converts the electrical energy into the power grid.
Independent photovoltaic power generation, also known as off-grid photovoltaic power generation. Mainly by the solar cell module, a controller, battery composition, to an AC load, the AC inverter also needs to be configured. Independent PV power plant comprises a village power supply system in remote areas, household solar power system, a communication signal power, cathodic protection, lights and other solar photovoltaic power generation system with the battery may run independently.
Grid-connected photovoltaic power generation is directly connected to the public grid after the direct current generated by solar modules into alternating current electricity requirements in line with the city power grid through grid-connected inverter.
It can be divided with battery storage and power generation system without a battery.
QY-T03 solar photovoltaic system training device is series charging PWM control mode, the voltage loss than the original charging circuit charging diode reduced by half, the charging efficiency is 3-6% higher than non-PWM; overdischarge enhance recovery charge, the normal direct charging, auto float control will help improve battery life. Protection features, including reverse battery, battery over and undervoltage protection, short circuit protection of the solar cell module, with automatic recovery output over-current protection, output short circuit protection.
