Motion Control & Drives


Energy-saving irrigation methods

March 2019 Motion Control & Drives

Anyone within the agricultural sector will know that operating an irrigation system can be expensive, with one of the primary factors being the cost of energy. The good news is that there are ways to reduce costs and achieve savings.

Significant efficiency can be realised by leveraging available technology to provide an appropriate electric motor and variable speed drive (VSD) combination that reduce costs while providing reliable performance. WEG’s IE3 Top Premium Efficiency motors and VSDs are designed for that purpose.

As a supplier with a solid track record in irrigation applications, the Zest WEG Group can provide examples to show how energy costs can be reduced. In a pivot pump application, which operates for 4000 hours in a single year – two planting cycles – it was possible to do a comparison between a standard efficiency IE1 motor (91% Eff) and a premium efficiency WEG IE3 motor.

WEG IE3 Top Premium Efficiency motors not only offer maximum ingress protection with a higher winding insulation system to increase motor life expectancy, but also offer efficiencies of up to 96,6% and benefits are apparent when compared against IE1 standard efficiency motors. Using a 22 kW 2 Pole at 75% of full load IE1 motor with an efficiency of 91%, measured against a WEG IE3 motor with 93% efficiency, estimated savings of R2100 per year at the current tariff will be achieved.

Much higher savings can also be realised by using a WEG VSD in combination with a WEG motor. An IE1 electric motor, again operating for 4000 hours per year at 91% efficiency, will consume about R93 800 worth of energy, using old valve-based methods to throttle and reduce the output of water volume and/or pressure. The same could be achieved using a VSD to reduce the motor speed while simultaneously further reducing the energy used when compared to running the motor direct online from a power source.

If a 10% reduction in operational speed using the VSD is assumed, further savings of 22% to 27% could be achieved.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Future-proofing SMEs with cobots
Omron Electronics Motion Control & Drives
Many countries around the world are likely to experience skill shortages over the coming decade, especially technical specialists. At the same time, product lifecycles are becoming shorter. Collaborative robots are easy to set up, and offer a quick and cost-effective solution.

Read more...
Flexible transport solutions for materials handling
Omron Electronics Motion Control & Drives
Omron has added a Selectable Autonomy functionality to the core software for its line of autonomous mobile robots

Read more...
Sun carries the load
Motion Control & Drives
When valuable lives are hoisted in the air, reliable load holding technology is at its utmost importance. That’s why you can count on Sun’s excellent load holding cartridge valves.

Read more...
Latest trends in pneumatics systems
Motion Control & Drives
Online teaser: There is a misconception that there is not much innovation in the pneumatics field, but a closer look reveals otherwise.

Read more...
Hägglunds Drives at Botswana exhibitions
Motion Control & Drives
Hägglunds Drives South Africa recently participated in the Botswana Mining and Technical Exhibitions.

Read more...
Agricultural chain solutions
SKF South Africa Motion Control & Drives
SKF agricultural roller chains and special combine, baler and drive chains are used extensively in the agricultural industry on a range of machines and equipment that includes combine harvesters and headers, planters, feed mixers, and balers.

Read more...
New smart, connected crane
Motion Control & Drives
Konecranes has launched its flagship Konecranes X-series industrial crane, the successor to its popular CXT model. It has a new compact design and safe, reliable technology that, thanks to its wireless upgrade capabilities, can adapt to customer needs now and in the future.

Read more...
Bosch Rexroth Africa strengthens its offering
Motion Control & Drives
Hydraulic and Automation Warehouse (HAW), a Bosch Rexroth Africa group company, has incorporated Power Team SA’s SPXFLOW and Bolting Systems into its offering.

Read more...
Lubrication system for Moroccan paper mill
SKF South Africa Motion Control & Drives
SKF enhanced personnel safety and increased machine reliability boosted uptime, and delivered substantial time and cost savings for a leading paper mill in Morocco with the installation of a complete Maxilube lubrication system on a paper machine.

Read more...
Revolutionising warehouse operations
Motion Control & Drives
With the warehouse industry requiring ever-greater efficiencies, Toyota Material Handling has introduced an articulated forklift truck that revolutionises warehouse operations, and promises heightened agility, unmatched precision, and elevated safety standards.

Read more...