Variable Speed Drives for HVAC Applications

  • 17 Feb 2022
  • 11:30 AM - 1:00 PM
  • Byron's Southend, 101 W. Worthington Avenue, Suite 110 Charlotte, NC 28203
  • 166


Registration is closed


TOPIC: Variable Speed Drives for HVAC Applications



By: Patrick Leake

Presentation Summary:    

Variable speed drives are used throughout HVAC systems to save energy and optimize control.  In this presentation we will review the basics of how a drive works and how to apply them in HVAC applications.  We will examine motor types for drive applications along with common shaft grounding techniques to prevent motor bearing fluting.  We will also review how to properly select a drive based on the location and application and discuss what causes electrical harmonics and their impact on the system.  

Speaker Bio:     

Patrick Leake, has over 25 years of Sales and Management experience with hydronic systems and equipment for commercial and industrial applications.

He graduated with a B.S. degree from Clemson University in 1995 and began working for James M. Pleasants Co. Inc. in that same year. Mr Leake is a member of the Southern Piedmont ASHRAE Chapter, ASPE and USGBC.

Mr. Leake's main areas of interest are steam systems, chiller plants, high efficiency boilers, & green plumbing systems.

©2015 SPASHRAE, All Rights Reserved. This website is maintained by the Southern Piedmont Chapter of the American Society of Heating, Refrigeration and Air Conditioning Engineers, Inc. It does not present official positions of the Society nor reflect Society policy. ASHRAE chapters may not act for the Society and the information presented here has not had Society review. To learn more about ASHRAE activities on an international level, contact the home page at


Powered by Wild Apricot Membership Software