Understanding Electronically Commutated Motors (ECMs)

A comprehensive study and resource manual that serves as a fundamental building block to understanding electronically commutated motors (ECMs), this book draws on the author s more than 20 years of HVACR experience and extensive knowledge of ECMs. ECMs designed specifically for OEM (original equipment manufacturer) multistage indoor blower motor applications entered the HVACR industry in the late 1980s. Today they are utilized in all HVACR OEM motor applications, as well as a growing number of retrofit applications. This book starts at the beginning with a detailed outline of ECM theory, and goes on to discuss all HVACR ECM applications, designs, operational capabilities, diagnostics, and repair. The author covers the entire history and evolution of ECMs, including the most current advancements in technology and applications.