The VLT® DriveMotor FCM 106 is an innovative, simple and flexible motor-mounted frequency converter. When using frequency converters, users are often faced with issues of cost and space for the necessary control cabinets. By integrating the frequency converter with the motor, the FCM 106 offers a space-saving alternative for fan drives, pump drives and industrial drives. It covers the power range from 0.55 to 22 kW.
The VLT DriveMotor FCM 106 is an integrated package with an induction motor or a permanent-magnet motor. Its ability to drive PM motors and achieve correspondingly high system efficiency makes it the ideal addition to the proven EC+ concept for high-efficiency fan systems. Instead of the motor/converter combination, users can also order the frequency converter unit, VLT® DriveMotor FCP 106, separately and mount it on their own (existing) motor. The connection between the FCP 106 and the motor is implemented using plug-and-socket connectors for power levels up to 7.5 kW, which makes fitting the device very easy.
Thanks to its own cooling system and an individually adjustable adapter plate, the device can be adapted to a wide variety of motors.
Overall efficiency figures of more than 68% can be achieved for fan systems with Danfoss`s EC+ concept. The combination of high-efficiency PM motor and frequency converter results in an efficiency level that is equal to or better than the IE4 Super Premium efficiency class.
Another increasingly important topic: clean grid
Electrical power is now the most important resource for households, industry and commerce. It is an unusual sort of resource: it must be constantly available, it can hardly be stored, and quality control before use is practically impossible. With the coming of the integrated European power grid, higher grid utilisation and lower investments, mains power quality will decrease in future. Deviations from the ideal sinusoidal waveform are therefore unavoidable, although they are allowable within certain limits.
This distortion results in `mains harmonics`, which may have adverse effects on connected loads if they are too strong. Mains harmonics must be eliminated to avoid these adverse effects. Generally speaking, mains harmonics can be reduced by using electronic power conditioners to reduce pulsating currents by means of amplitude limiting.
