International Journal of Emerging Trends in Science and Technology

2014 | Volume 1 | Issue Issue 1

DC Bus Voltage Clamp Method to Protect Over-Voltage & Insulation Failures in Adjustable Speed Drives

1. K. Madhavan – Hindustan University, Padur, Chennai, Tamil Nadu, India

2. M. Maheswari – Hindustan University, Padur, Chennai, Tamil Nadu, India

Received
- 		Accepted
- 		Published
06-Jan-2016
Abstract
This project investigates the effect of PWM switching and long cable length on the voltage insulation components inside an adjustable speed drive (ASD). This project shows that high potential voltage insulation issue may exist on various components inside the ASD and cause earlier failures under very long cable or multiple drive conditions. A system model to describe this phenomenon is described in the project. A dc bus voltage clamp circuit is proposed to reduce these voltage stresses. The effectiveness of this circuit is verified by both simulation and experimental results.
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