Brushless DC Motor Technology & the HVAC Industry

Sinotech    April 14, 2014

Electric motors account for up to 50 percent of the energy used in U.S. commercial buildings, 60 percent of the energy used in U.S. industrial buildings and about 45 p

ercent of the total global energy consumption. To help curb energy use, more industries are integrating brushless DC motors into their systems, particularly those in the HVAC industry.

What is a BLDC Motor?

There are two basic types of motors: those with brushes and those without. BLDC, or brushless, motors don’t have carbon brushes or commutators, which can cause premature wear and tear. Instead, they use a controller board to adjust the speed. The permanent magnets in a BLDC design decrease the loads in the electrical and magnetic circuits of a motor. Consequently, the motor’s shaft rotates because the current generates a rotating magnetic field that turns the rotor magnet.

Increasing HVAC Efficiency

When it comes to heating and cooling costs, motor type and reliability are the keys to an efficient HVAC system. With this knowledge, many companies are upgrading the motors in their HVAC units, including the heating and cooling systems in fleets, to brushless designs in an effort to go green and save money.

In addition to greater energy efficiencies, the HVAC industry uses BLDC motors because of their:

  • Lightweight and compact designs that are great for small applications like personal cooling systems.
  • Fewer maintenance needs.
  • Increased lifespan.
  • Variable speeds.
  • Efficient battery use.
  • Simplicity to replace.

The good news about brushless motors is that the technology is readily available today. Plus, HVAC units with BLDC motors have SEER ratings of 13 and higher, making them up to 33 more efficient than systems with their brushed counterparts.

Sinotech offers a variety of brushless DC motors to help you meet your energy efficiency goals. Its experts can even custom engineer and manufacture brushless motors for your specific needs and applications. Contact Sinotech today to request a quote.

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