Are controllers necessary to drive VAIREX's regenerative compressors?

Yes, VAIREX uses brushless, direct current (BLDC) type motors to reduce cost and increase system efficiency and operating life. BLDC motors require an external controller to function properly.

This system architecture helps the end user by:

  • Reducing power consumption
  • Providing a wide flow range: turn down to 1% of maximum flow is generally achieved
  • Reducing wear components: a VAIREX regenerative blower has no brushes to replace!

VAIREX stocks multiple different models of BLDC controllers to match with our regenerative blowers.  Visit the Regenerative Compressor page or Controller page for more reasons why a VAIREX air system is the best choice for any fuel cell application.


How do you read VAIREX performance maps?

VAIREX performance maps give information about a regenerative compressor's flow, pressure performance, and power usage. The regenerative blower type, voltage used, and elevation of the performance map are all given in the title. The thick colored lines are regenerative blower speed in RPM. The thin, blue lines are power consumption.

Power consumption of the air delivery system can be estimated with these performance maps.

The estimated power lines show total system power, including a regenerative compressor and controller. No additional power needs to be calculated for a controller.


How does VAIREX test your regenerative compressors?

We test our regenerative compressors with a set of standard controllers on a test stand. Our test stand has an ambient pressure transducer, outlet pressure transducer, ambient temperature sensor, outlet temperature sensor, and a Micro-Motion mass flow meter. VAIREX directly measures the mass flow data that we publish to reduce error due to conversion from volume flow measurement devices.


What business standards does VAIREX adhere to?

VAIREX is actively implementing processes to become ISO9001 certified.


Does VAIREX do custom work?

VAIREX is always looking to expand their product line outside of the products currently offered. See the Custom Solutions page for more details of our capabilities or contact us for more information.


Does VAIREX export?

Yes, VAIREX is actively shipping to over 17 countries in the world.


How does VAIREX measure efficiency?

VAIREX has studied how to measure efficiency and has published this white paper on a consistent way to measure efficiency.


VAIREX terms and conditions can be found here.