Axial fan arrangement for ventilation of low-power building, has flow-controlling arrangement generating speed-reference value for electrically commutated motor, and speed controller controlling speed of motor to speed-reference value

摘要

The arrangement (100) has a flow sensor for determining air-volume flow (125) produced by an axial fan (120) and for production of a volume flow-measured value (Vmess). A volume flow-controlling arrangement (160) controls the air volume flow to a predetermined volume flow-reference value (V-s). The volume flow-controlling arrangement is designed to generate a speed-reference value (N-s) for an electrically commutated motor (110) . A speed controller (170) controls the speed of the motor to the speed-reference value. An independent claim is also included for a controlling arrangement for a fan.