PWM HVAC Blower Controller and BLDC Motor Controller Efficiency Assessment J3109_201707

DOI: https://doi.org/10.4271/J3109_201707

Issuing Committee: Interior Climate Control MAC Supplier Committee

Publisher: SAE International

Pages: 9

Rationale: Legislation has been introduced that provides credits for the use of emission reduction technologies. One such technology is the use of a Pulse Width Modulated (PWM) HVAC Blower Controller (together with a brushed DC motor) or a Brushless DC controller (with Brushless DC motor) in place of traditional HVAC Blower Controllers such as resistors or Linear Power Modules. A uniform standard does not exist to evaluate the efficiency of such controllers and estimate the impact towards emissions and qualify for credit with the legislative bodies.