Energy saving fans, energy efficient blowers, ventilation equipment - ebm-papst A&NZ Pty Ltd
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In addition to performing the commutation, the electronics convert AC to DC and control the fan speed by regulating the power to the motor. An AC motor consumes additional energy solely to create a magnetic field by inducing a current in the rotor. But this is only half the story.
- EC is easy
The use of modern electronics in controlling the motor has opened up many other possibilities which contribute to using less power. Control options To control the motor accurately and efficiently the integrated electronics have to continuously monitor the motor speed and adjust the control input. No need to worry about DC supplies for the sensors either, this is provided by another connection on the motor.
In fact, simply connect a potentiometer and you have infinitely variable speed control. No triacs, no frequency inverters and no whining noises!
An EC motor under speed control is virtually silent. EC is easy How does this affect energy efficiency? If you can tailor the fan speed to match the demand, the potential for energy saving is huge.
EC fans can also contribute to increasing the overall efficiency of an application. In a cooling system for example, keeping the refrigerant pressure constant rather than having it rise and fall as fans switch on and off has been found to reduce the load on the compressor resulting in even greater energy saving.
World leading high efficiency fans and motors supplier - ebm-papst A&NZ Pty Ltd
If two motors are producing the same output but one has a greater power input then you can be sure that the surplus energy is being dissipated as heat. If an application is designed to remove heat then it will have to do extra work just to remove the heat produced by the fan motor itself, so EC fans will improve the efficiency of the whole system.
EC AC motors are designed to operate at a certain point on their performance curve which coincides with their peak efficiency. All these features gained in importance once more when - with the introduction of hybrid technology and stricter controls on fuel consumption in - the energy efficiency of racing cars took on a decisive role in determining victory.
Some examples of these shared features… Aerodynamics The less energy is required for overcoming wind resistance, the faster the racing car — and the more efficient the fan.
The laws of aerodynamics apply equally to both, and yet each has its own solutions from which the other can learn. Motor technology Since turbo engines in Formula OneTM racing have only been able to consume a limited amount of fuel. Efficiency is now more important than simply stepping on the gas.
EC Fans and Motors
With fan motors, too, major changes have long been taking place: Materials In order to implement aerodynamic optimizations in the first place, materials are required which are both light and can be molded to the required shape. Lightweight construction The lighter the more efficient.
What applies to every car on the road is of course all the more important in a Formula OneTM car — and for a fan, because lower weight reduces the strain on the mechanics. A good example of the application of this in practice is the airfoil blade used in the RadiPac centrifugal fan. Networking The Silver Arrows racing cars of Mercedes-AMG Petronas Motorsport use transponders to transmit continuous performance data to the team engineers and control centers at every race across the globe.
The ebm-papst BUS systems functions in the same way, exchanging commands and status reports and ensuring Industry 4.
However, it's far from sufficient simply to work on the same challenges.