Improving Performance and Cost in Single-Phase AC Fan Systems

Single-Phase AC motors continue to dominate the motor market and continue to grow in volume. Their low cost and simplistic design make them an ever favorite even as they are slowly displaced with more complex; more energy efficient solutions. By utilizing digital control technology to the more basic single-phase AC drive, many improvements can be made to the performance, noise and installation costs related to these motors. Fan assemblies are becoming more common in both distributed HVAC systems and Cleanroom filter systems. The low cost AC platform will continue to play a significant role and with improvements resulting from digital control we can narrow the performance gap. Thus, the AC systems will be quieter, more efficient and easier to install; extending their usefullness and competitiveness for new applications and installations.