At the last technology evening Eric Carter from turboTRAIN hosted and gave a presentation on ‘Avoiding pitfalls with variable speed drives’ on the premise that “If I understand it, I can work with it”.
Ann de Beer presents Eric Carter with the SAIMC presenter’s certificate.
Variable Speed Drives (VSDs) control the speed of machinery. Many industrial processes, such as assembly lines, must operate at different speeds for different products. Where process conditions demand adjustment of the flow from a pump, fan or conveyor belt, varying the speed of the drive may save energy or have more precise control as compared with other techniques. Although VSDs are promoted as a perfect solution with some wonderful advantages, they do also have drawbacks such as low speed torque, response to sudden load changes and low speed cooling.
Other topics covered by Eric included:
• Achieving vector control with encoder or via sensorless
• Control loops for DC motors
• Supply-side problems
• Notching
• Harmonics
• Pulse width modulation
• Effect of inductors
• Maximum cable lengths with reactors
• Switching pulse overshoot
• Electromagnetic compatibility (EMC)
• Motor braking (dynamic and DC injection)
• Unexpected VSD trips
Understanding the cause of these problems can help mitigate the problems and move towards providing solutions. The SAIMC would like to thank Eric Carter for his informative and well received presentation.
Read more...SAIMC: Johannesburg branch SAIMC
SAIMC
Jenine Jansen van Vuuren from Comtest delivered a presentation at the SAIMC Johannesburg technology evening, focusing on electric vehicle charging stations and the key metrics that govern their functionality.
Read more...SAIMC: Durban branch SAIMC
SAIMC
At the monthly meeting of the Durban branch of the SAIMC, Smunye Memela, project manager and switch gear specialist at Gubhuza 3 Trading presented on the subject ‘From sensors to insights: predictive maintenance in action’.
Read more...SAIMC knowledge sharing event SAIMC
SAIMC
SAIMC will host a technical knowledge-sharing session by Hendrik Spies from SICK Sensor Intelligence, who will share his insights into ‘From Condition Monitoring to Predictive Maintenance: The Digital Journey’.
Read more...SAIMC Durban
SAIMC
: At the SAIMC Durban monthly meeting, James Adams from Adroit Technologies presented to a full house on the subject of ‘The intelligent factory: AI, digital twins, zero-defect production, and cybersecurity in modern automotive manufacturing’.
Read more...SAIMC: From the office of the CEO SAIMC
SAIMC
AI has become part of our productivity platforms, our operations and our decision making environments. The SAIMC NPC Power Hour series is one such initiative.
Read more...SAIMC: Johannesburg branch SAIMC
SAIMC
The March SAIMC Johannesburg technology event was proudly hosted by Matech and focused on business intelligence made simple.
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