Two units of the newly-developed WEG 11 kV VSD have been commissioned in West Africa by WEG Automation Africa, a member of the Zest WEG Group.
According to Kirk Moss, senior manager: projects and engineering at WEG Automation Africa, the new WEG MVW3000 VSD is a valuable addition to its medium voltage (MV) VSD portfolio. The first two 11 kV units produced are for 850 kW ventilation fan motors in an underground gold mine in Ghana.
“In line with WEG’s ongoing innovation, the addition of the WEG MVW3000 system brings a range of benefits to customers,” says Moss. “It gives WEG Automation Africa even greater flexibility in our market offering, further enhancing our capability to provide customised solutions.”
The design is based on the well-known cascaded H-bridge (CHB) topology, using multiple low voltage power cells in combination to achieve the desired voltage output. The input switch, phase-shifting transformer and VSD are fully integrated in a single MV panel.
“The WEG MVW3000 is particularly suited to applications where there are standard motors with no special insulation,” adds Moss, “or where existing motors are being modified for VSD control.”
This VSD delivers high quality input power using low harmonic multi-pulse transformers. Users benefit from an efficiency of over 96,5% throughout the entire load range, and a power factor of more than 0,95 throughout the entire speed range.
“The design includes power cells with long-life plastic capacitors, which are more reliable and last longer than dry type capacitors,” explains Moss. “They also have the advantage of not needing to be reformed after long periods of storage.”
In standard configuration, the 11 kV VSD is available from 40-400 A or 640-6500 kW, although larger sizes are also available if required.
Among the options on the WEG MVW3000 is an automatic cell bypass solution. This ensures minimal reduction in the output-rated torque so that normal operations can continue. Redundant power cells can also be added to the design to ensure that 100% torque can be maintained. Prior to delivery, all VSDs are fully load-tested in WEG’s state-of-the-art facility in Brazil.
Read more...Design life analysis keeps lifting equipment alive
Motion Control & Drives
The Konecranes Design Life Analysis has been specifically designed to calculate the remaining design life of structures and machineries of cranes and associated lifting components. It determines the amount of work it can safely perform before its useful life is over.
Read more...Compact powerhouses with versatile configurability
Motion Control & Drives
: Faulhaber is introducing several new additions to its range of DC micromotors. Designed for maximum reliability and flexibility, these drives open up new possibilities for modern, space-saving drive solutions.
Read more...Kollmorgen introduces new controller and high-voltage capability
Motion Control & Drives
Kollmorgen has expanded its Kollmorgen Essentials portfolio with the new PCMM2G Essentials controller and a high-voltage drive rated for up to 4 kW. These support a broader range of industrial applications and motion requirements.
Read more...Reducing friction on high-throughput plants igus
Motion Control & Drives
Engineered polymers manufacturer, igus has developed a unique tribological dry coating for high-throughput packaging and manufacturing plants to reduce friction and wear.
Read more...Innovative drive system for smart logistics
Motion Control & Drives
With its new DualGear, Faulhaber presents a high-performance drive system with high dynamics, robustness and precision in a compact, diameter-compliant design.
Read more...VSD drive excels in mining and industrial automation Conical Technologies
Motion Control & Drives
The Veichi AC310 VSD drive is a high-performance variable speed drive designed for demanding industrial environments, combining advanced motor control, robust hardware design and flexible integration capabilities.
Read more...The shopping cart that knows the way
Motion Control & Drives
How can visually impaired and blind people shop independently in a supermarket? VIRAS supplies the answer: an autonomous shopping cart developed at the Eastern Switzerland University of Applied Sciences.
Read more...The cost of incorrect lubrication
Motion Control & Drives
Sam Kekana, technical sales representative at Lubrication Engineers has spent years working with plant maintenance teams across a range of industries, and he has seen where lubrication goes wrong and what it costs companies when it does.
Read more...When restoring worn pumps makes cents
Motion Control & Drives
Through its extensive SupremeServ operation, pump manufacturer KSB Pumps and Valves is able to repair a wide range of pumps and valves to original OEM specification at a significantly lower cost than new equipment.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version