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Power Electronics And Control To Portable Solar Generation

Author: Source: Datetime: 2016-09-14 15:32:45
Solar cell is a typical nonlinear semiconductor active device, the output characteristic curve of the family is a group having a droop under sunlight illumination as the reference variable. To take advantage of the energy output of Solar lifePo4 batteries, it is necessary to control the operating point of solar cells to maximize the photoelectric conversion efficiency of solar cells; must also objects needed electricity, power electronic devices using Gao efficiency of solar cells energy output in the form of conversion.

Photovoltaic (PV) systems involved in power electronics and control technology include the following: DC-DC and DC-AC conversion technology, computer control and remote monitoring technology, solar battery maximum power point tracking technology.
Wherein, DC-DC conversion technology is mainly used to control the charging and discharging of the battery; DC-AC conversion technology, inverter technology that is used for off-grid AC independent power plants and grid-based solar power generation system; computer control and remote monitoring technology, solar cell maximum power point tracking technology is a combination of computer, automatic control theory, automatic detection, telecommunications and electronic technology disciplines, such as high-tech. By applying these technologies for energy conversion system and control equipment, the photovoltaic modules, storage devices, and other load or grid connected together to form a photovoltaic power plant system, to provide power to the load. This chapter focuses on the MPPT solar charge controllers, inverters, photovoltaic system is widely used (MPPT) technology, and finally introduced photovoltaic systems commonly used in remote telemetry

Charge Controller

Charge controller is off-grid PV system in the basic control circuit, the circuit is also essential that any off-grid photovoltaic systems, regardless of system size, such as: a small solar flashlight or solar power portable generator, lawn, large even a few kilowatts to several hundred kilowatts of solar photovoltaic power plant system, to be used in the charge and discharge controller. Of course, large-scale systems (such as: solar power plants ,solar storage batttery ) with a controller with small systems (such as: solar flashlight) with a controller that the complexity of the hardware or software of the control circuit is not the same, but the basic principle is the same. Sometimes you see the PV system, may not be in the inverter controller and, in fact, this is a practice that the controller into one of the inverter.

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