Solar energy are very large, widely distributed, clean and safe. Solar pump technology is just such a technology that can make full use of solar energy and does not consume fuel and other organic energy, no pollution, is conducive to environmental protection and energy saving, and can solve the problem of water supply and irrigation in some remote places with insufficient power. With the development of the solar industry, solar panels have become more efficient. PV150A&500 developed by FRECON has been successfully applied around the world. The PV inverter is learned from the previous generation of products and improved with feedback from end customers around the world. This paper will introduce the specific application of PV150A&500 series Solar pump inverter.
Solar energy is an inexhaustible kind of inexhaustible natural energy, its energy is great, about 2 / 3 of the world is rich in solar radiation, suitable for the use of solar power generation system.
Solar pump system is a system that directly uses the solar effect of solar cells to generate electricity, and then through a series of power electronics, motors, water pumps and other control and implementation links to achieve water extraction in rivers, lakes or deep Wells. The system uses solar energy as energy, no other energy, sunrise, sunset and rest, no personnel on duty, working time basically cover most of the irrigation time requirements, even if the need for night work, optional use grid power to achieve.
Solar (solar, abbreviated as PV), is short for solar power generation system (solar power system), it is a new type of power generation system that uses the solar effect of solar cell semiconductor materials to directly convert solar radiation energy into electric energy.
Solar pump system operation principle: the solar panels absorb solar radiation energy and convert it into electric energy; the solar pump inverter adjusts the output frequency in real time according to the change of sunshine intensity, and drives the pump to work.
Solar panels use light to generate direct current, mainly mono crystalline silicon panels, poly silicon panels, amorphous silicon panels (including flexible film).
The Solar pump is divided into DC Solar pump and AC Solar pump according to the drive mode. The DC Solar pump can be directly connected with the solar panels, and can also be connected with the solar panels through the maximum power adapter. The ac solar pump must be connected to the solar panel through a special frequency converter device.
After collecting feedback from the solar market and end users, get the following suggestions:
(1) Required to use the solar panels for maximum efficiency
Because the conversion efficiency of the ordinary solar frequency converter is low.
(2) Need to support a single-phase water pump
For civil water pumps, many motors are single-phase, while many solar pump frequency converters on the market do not support single-phase, only support three-phase.
(3) Supporting the AC / DC channel input is required
At night, without a DC energy input, the pump stops working. Some projects require the pumps to keep them working at all times.
(4) Easier to debug
The previous generation of products need to modify some parameters to apply to different water pumps, while the new frequency converter can automatically match the parameters to work.
(5) Support remote control
Users can use mobile app or website to monitor the running status of the inverter and control the system to start or stop working.
In order to meet the needs of end users and solve the disadvantages of solar pump inverters in the market, FRECON has developed PV150A&500 to meet the above needs proposed by customers.
PV150A&500 In addition to single-phase or three-phase pumps, it has the following advantages:
1) Built-in MPPT controller, excellent MPPT algorithm is suitable for a variety of solar panels;
2) The inverter supports photovoltaic input and AC power grid input, and the function of automatic switching and compensation can be realized without manual operation；
3) Has the water level control logic function, avoid the state of no less dry pumping operation, and increase the full water level protection function；
4) Start gentle, reduce the large current impact on the motor；
5) The low start voltage and the wide input voltage range provide more possibilities for accepting multiple PV group string configurations and different types of PV modules；
6) Digital intelligent control can flexibly adjust and set the speed range of the water pump. In addition to the soft start function can also provide lightning protection, overvoltage, overflow, overload and other protection functions；
7) Support WIFI / 4G module, can be through the website platform or mobile application operating system；
