Choosing the right VSD for tunnel ventilation application
May 13 @ 5:30 pm - 6:30 pm AEST
Overview
In recent years, several tunnel projects have faced serious setbacks due to catastrophic motor failures. These failures are caused by high peak voltages, a result of using Active Front End (AFE) VSDs combined with long motor cable lengths, extending to 500 meters. This session examines the underlying electrical phenomena contributing to these issues and why conventional mitigation methods, such as standard filters, are often insufficient.
Participants will gain practical insight into proven engineering solutions that deliver near-sinusoidal voltage at the motor terminals, reducing stress on insulation and extending asset life. Drawing on real-world case studies and field testing, the session highlights key design considerations, specification pitfalls, and lessons learned to support more reliable tunnel ventilation system performance.
Learning outcomes
In this event, attendees will be able to:
- identify the root causes of high peak voltages in AFE VSD tunnel applications
- evaluate why conventional filtering methods may not adequately protect motors apply practical design and specification strategies to prevent premature motor failure
- select VSD and mitigation solutions that improve reliability and extend asset life
Program
In-person:
- 5.00 pm AEST: Guest arrivals and registrations
- 5.30 pm AEST: Presentation begins
- 6.15 pm AEST: Q/A begins
- 6.30 pm AEST: Event close
Online:
- 5.30 pm AEST: Presentation begins
- 6.30 pm AEST: Presentation ends
About the speakers
