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.
Solving common automation challenges with Festo’s servo drive and servo motor solutions Festo South Africa
Motion Control & Drives
Automation projects face challenges that include limited installation space, the need for precise and repeatable linear motion, rising cycle-speed demands, and seamless integration with existing control architectures. Festo’s servo portfolio directly addresses these issues with compact, modular drive and motor solutions designed for specific applications.
Read more...Inside the Giant Magellan Telescope with mechanical engineering at astronomical scale
Motion Control & Drives
Construction of the Giant Magellan Telescope, set to become the world’s largest Gregorian optical infrared telescope, is well underway. While its scientific mission is to transform astronomy, its performance depends heavily on advanced mechanical, hydraulic and pneumatic engineering.
Read more...Motion control for flight simulators Beckhoff Automation
Motion Control & Drives
Turkish specialist, SANLAB is a leader in motion platforms and simulation technologies. At the heart of these platforms are application-specific servo drives, servomotors and industrial PCs for real-time control, which are supplied by Beckhoff.
Read more...Filtration as a reliability driver in motion control systems Parker Hannifin - Sales Company South Africa
Motion Control & Drives
This article highlights the importance of filtration in motion control systems, how contamination affects performance, and what fleet managers, operators and maintenance teams in southern Africa can do to reduce downtime, avoidable wear and costly repairs, aided by Baldwin Filters.
Read more...Supporting construction of next-gen floating offshore wind turbines
Motion Control & Drives
While windy locations naturally make ideal spots for offshore wind farms, they bring challenges when it comes to assembling wind turbines, particularly in ports. Mammoet was approached by Euroports to support with the marshalling and assembly of the components that make up the three turbines at Port-la-Nouvelle in France.
Read more...Rollers excel where profits balance on a knife edge igus
Motion Control & Drives
Polymer component specialist manufacturer, igus has developed a range of lubrication-free long-life knife edge rollers designed to improve the transfer of products between conveyor belts in high-speed production environments.
Read more...Next-generation oil-free motor systems with active magnetic bearings WEG Africa
Motion Control & Drives
WEG and SpinDrive are collaborating to integrate SpinDrive’s AMBs and built-in IoT condition monitoring into WEG’s market-leading electric motor offering, creating an oil-free, maintenance-free drive solution.
Read more...Addressing cost, supply and disease pressures in Africa’s feed industry
Motion Control & Drives
Feed producers across Africa are operating in an increasingly complex and volatile environment. The pressures are forcing producers to rethink how they operate, balancing cost control, production efficiency and the need for greater flexibility in an unpredictable market.
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