Ampolt Batteryless Solar Pumpset


Solar powered water pumps can deliver drinking water as well as water for livestock or irrigation purposes. Solar water pumps may be especially useful in small scale or community based irrigation, as large scale irrigation requires large volumes of water that in turn require a large solar PV array. As the water may only be required during some parts of the year, a large PV array would provide excess energy that is not necessarily required, thus making the system inefficient. Solar PV water pumping systems are used for irrigation and drinking water in India.

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A solar-powered pump is a pump running on electricity generated by photovoltaic panels or the radiated thermal energy available from collected sunlight as opposed to grid electricity or diesel run water pumps.[1] The operation of solar powered pumps is more economical mainly due to the lower operation and maintenance costs and has less environmental impact than pumps powered by an internal combustion engine (ICE). Solar pumps are useful where grid electricity is unavailable and alternative sources (in particular wind) do not provide sufficient energy.

Components

A photovoltaic solar powered pump system has three parts:
  • Solar panels
  • Controller
  • Pump

The solar panels make up most (up to 80%) of the systems cost.[citation needed] The size of the PV-system is directly dependent on the size of the pump, the amount of water that is required (m³/d) and the solar irradiance available.

The purpose of the controller is twofold. Firstly, it matches the output power that the pump receives with the input power available from the solar panels. Secondly, a controller usually provides a low voltage protection, whereby the system is switched off, if the voltage is too low or too high for the operating voltage range of the pump. This increases the lifetime of the pump thus reducing the need for maintenance.

Voltage of the solar pump motors can be AC (alternating current) or DC (direct current). Direct current motors are used for small to medium applications up to about 3 kW rating, and are suitable for applications such as garden fountains, landscaping, drinking water for livestock, or small irrigation projects. Since DC systems tend to have overall higher efficiency levels than AC pumps of a similar size, the costs are reduced as smaller solar panels can be used.

Finally, if an alternating current solar pump is used, an inverter is necessary that changes the direct current from the solar panels into alternating current for the pump. The supported power range of inverters extends from 0.15 to 55 kW and can be used for larger irrigation systems. However, the panel and inverters must be sized accordingly to accommodate the inrush characteristic of an AC motor.

Highlights


  • Battery Less operation.
  • MPPT incorporated to track maximum power and give 35% more energy from the panel.
  • Maximum torque at minimum sunlight.
  • Built-in Overload and short circuit protections.
  • Variable Frequency Drive incorporated for smooth operation even during minimum sunlight.
  • Transformers less design makes the product smaller in size and also cost effective.
  • Works even during cloudy and rainy conditions
  • 2-years warranty


Features


  • Battery Less operation.
  • Variable Frequency Drive incorporated for smooth operation even during minimum sunlight.
  • Transformers less design makes the product smaller in size and also cost effective.
  • MPPT incorporated to track maximum power and give 35% more energy from the panel.
  • Maximum torque at minimum sunlight.


Potential For Use


Ampolt battery less solar pumps are more suitable for remote areas with no or unreliable grid or as an alternative to diesel pumps. Some of the most popular applications are:

  • Drinking water supply for small habitations.
  • Horticulture farms, orchards, vineyards, gardens and nurseries.
  • Agro forestry and plantations.
  • Dairy, poultry and sheep farm.
  • Aqua culture, fish farming.


Advantages


  • Ampolt battery less solar pumps can be installed at a site completely eliminating loss of energy in transmission.
  • Can be installed to the required load of pumps up to 15KW (15HP).
  • SPV modules need only minimum maintenance and no battery is required.

Technical Specification


Power Rating 3HP-15HP
Input Voltage 400-960 VDC
Efficiency >96%
Control Type PWM Using DSP
PWM Frequency 20KHZ
Power Storage IGBT Based
Operational Temperature 0-550C
Pump Any 3-phase AC Pump

Excellent MPPT Efficiency, 98% conversion efficiency, 1000 V DC, AC power burst and an excellent cooling concept provides high yield and earlier return on investment. High voltage input and reduces losses on the DC side. Early start up and late stop of power production result in maximized yield while exact cooling minimizes energy losses MPP tracker, allows for more modules in a series and longer strings, while providing flexibility in the PV setup.