5 REASONS FOR CHOOSING EC-FANS
Enerdes is exclusive dealer of EBM Papst fans for the horticulture. EBM Papst is the EC-pioneer! Back in 1965 they developed the first EC-fan. After more than 50 years of innovation, EBM Papst is still developing and perfecting their EC-fans.
How electric motors in fans work
Electric motors operate on the principle that like magnetic poles repel each other. Rotating a magnetic field in the motor stator causes the magnetic field in the rotor to move away from it. Repelling the rotor magnetic field causes rotation of the rotor. The main difference in motor types is how the rotor magnetic field is created:
1. Passing a current through an electrical conductor to produce an electromagnetic field (AC-technology)
2. Using a permanent magnet (EC-technology)
When comparing EC-fans and AC-fans, EC-fans have many advantages. We listed the five best reasons to choose for EC-fans:
1. EC-fans are up to 30% more efficient than AC-fans
EC-fans are up to 30% more efficient than AC-fans. This is because:
– Secondary magnetic field comes from permanent magnets rather than copper windings.
– AC motors consume additional energy solely to create a secondary magnetic field
– For EC-motors, electricity in the fan makes sure that the speed of the motor is continuously monitored, and the power input is continuously adjusts to optimize energy consumption. AC motors use frequency controllers.
– Motor efficiency is maintained across the speed range rather than at a specific design speed.
2. EC-fans have a longer lifespan
EC-fans have a significantly longer lifespan than comparable AC-fans. This is ensured by the lower temperature in the motor. In addition, AC-motors make use of carbon brushes that wear out.
3. EC-fans are easily controllable
EC-fans can easily be controlled with the ‘Enerdes Wireless Controller for EC-fans’-software. Via a program on your computer, the speed and ramp-up time of every fan in the greenhouse can be controlled. In addition, it is of course also possible to use a 0-10V control or integration in a MODBUS-network.
4. EC-fans do not need separate frequency control
The motors in the EC fans have an integrated frequency converter which can be controlled via the manner set out in paragraph 3. To drive an AC motor speed controlled, you will need to install a separate frequency control.
5. Increased duty with EC-fans
AC-fan speed is limited by motor electrical design (number of poles) and supply frequency unless used with additional frequency drives. EC-fan speed is regulated by the motor electronics and limited only by the structural design limits of the impeller