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Join STULZ, Mirus International, and ebm-papst for Part II of our Deep Dive into Harmonic Distortion in Data Centers.
To improve energy efficiencies in today’s modern custom air handlers, highly efficient electronically commutated (EC) fans are often incorporated for air movement. This is because these fan systems can improve efficiencies over conventional AC motors equipped with variable frequency drives (VFDs) by 30% or more. An EC fan incorporates a brushless DC permanent magnet motor (BLDC) controlled by an integrated rectifier, inverter, and smart electronics. BLDC motors, with efficiencies greater than 90%, provide a more effective ventilation system so that ‘free cooling’ becomes more easily achievable which contributes to the energy savings potential. Also, air distribution can be improved with multiple fan arrays allowing upstream or downstream components, such as filters or heat exchangers, to receive a more even airflow thereby improving air filtering and heat transfer efficiency.
In striving towards reliable and efficient systems, one significant factor sometimes overlooked is electrical harmonic distortion. One of the few things common with AC/VSD and EC fan systems is that they are both harmonic generating, non-linear loads. Without proper harmonic mitigation, non-linear loads can distort the AC power distribution and possibly expose a mission-critical facility to electrical issues, such as overheating distribution equipment and failure of sensitive equipment connected to the same electrical bus. If harmonics are not effectively mitigated, larger UPS systems and larger power generators may also be required. So investing in proper harmonic solutions compliments the energy savings efforts.
Although both AC and EC systems require harmonic mitigation at times, their solutions can be different. Fortunately, with recent developments in this field, a relatively easy to apply harmonic mitigation solution is available which can ensure that the energy savings of EC fans can be realized without the negative effect of poor power quality
Join us as we talk with Tony Hoevenaars, President and CEO of Mirus International, and Joe Landrette, (Master of Engineering) Director, VAC & Data Centers and Digital Solutions at ebm-past about understanding the advantage of using EC Fans for Custom Air Handlers and the best practices for mitigating Harmonic distortion in a data center’s electrical distribution system.
This webinar will be useful to electrical engineers, mechanical engineers, and end-users.