Motion Control & Drives


Drive solutions for energy efficient power transmission

June 2019 Motion Control & Drives

Vert Energy is committed to providing energy-saving solutions for its diverse customer base. “Critical challenges facing industry include finding the most efficient ways to minimise energy consumption and reduce CO2 emissions, with no compromise on productivity and safety,” says managing director, Grant Robertson. “With the implementation of variable speed and the optimisation of mechanical speed reduction efficiencies, the maximum saving of electricity consumption is obtained in any power transmission system.

“Feedback from our customers indicates that by combining Leroy Somer Dyneo permanent magnet motors with variable speed technologies, they have not only significantly reduced energy consumption, but also enjoy a good return on investment and lower overall cost of ownership.

“Through Dyneo permanent magnet solutions, with sensorless control and interchangeability with standard IEC mechanisms, we are able to offer our customers the benefits of high-performance permanent magnet motors, with the simplicity of mounting and installation equivalent to traditional asynchronous motors.”

The Dyneo range includes the option of an aluminium frame in sizes up to 500 kW. Benefits include European quality standards with certified efficiency ratings from approved regulatory bodies, an improved aesthetic finish as opposed to a rugged cast-iron body, removable feet for multi-mounted applications in certain frame sizes, better heat dissipation than with traditional cast-iron frames, and fewer losses due to improved thermal characteristics.

Leroy Somer’s Dyneo permanent magnet solutions enable the construction of lighter units with a reduced footprint, which is particularly beneficial to OEMs. The compact design and fewer mechanical components mean reduced size of the chassis. This design also facilitates easy installation of the motor, simplification of lifting and reduced transport costs.

Drive technology

The Dyneo drive units ensure high efficiency levels over the whole operating range, especially at speeds below the synchronous speed, where efficiency is higher than with asynchronous motors.

Dyneo technology, which also guarantees optimum torque over wide speed ranges without derating or forced ventilation, significantly improves the drive’s efficiency and enhances specific output power, offering better performance than conventional technologies.

Other important features include adaptation of the motor speed to the speed of the driven machine, improved performance of the driven machine by increasing its speed, potential elimination of gearing, a low rotor temperature-rise and better bearing performance.

Permanent magnet motors

LSRPM (IP55)/PLSRPM (IP23) permanent magnet motors are built using the same high quality European mechanical components as Leroy Somer asynchronous motors, to offer reliability and flexibility. This interchangeable range, with standard dimensions in terms of frame size, flange and shaft extension, provides an immediate energy-efficient solution without the need for modification of the existing system.

Advantages of the design include less wiring and fewer connections for simplicity of installation. Encoders or long cable lengths are not required and there is no need for concern about environmental constraints, like vibration, temperature and abrasive dust, affecting the machine.

These high-performance variable speed solutions, designed for applications requiring high torque at high speed, enhance power transmission performance in pumping, ventilation, compression, conveying, extrusion, process control and generator applications.

In a recent project, a variable-speed screw compressor, equipped with a Dyneo permanent magnet solution, was added to the existing four fixed-speed screw compressors used in refrigeration during beer production. This upgrade has achieved energy savings of 600 000 kWh/yr, as well as an increase in the maximum speed and improved system performance.

Another successful installation formed part of a modernisation programme at a rubber extrusion facility, where Vert Energy’s Dyneo solution has eliminated the machine’s off-centre pulley and belt system. The motor can withstand operation in 50°C above ambient temperature, and because of its compact design, it could be installed under the screw.

Vert Energy’s service to the electro-mechanical power transmission sector encompasses the supply of dependable products that combine high performance, energy efficiency, reduced downtime and extended service life, to meet stringent quality, safety and environmental standards.

For more information contact Ryan Robertson, Vert Energy, 086 111 8378, ryan.robertson@vertgroup.co.za, www.vertgroup.co.za




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