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How to regulate fan speed with AC synchronous motors?

Motor and fan related questions
A Sentera frequency inverter or Variable Speed Drive (VSD) allows you to control the speed of AC synchronous motors. Frequency inverters generate an almost perfect sinusoidal motor voltage via Pulse Width Modulating (PWM) technology using IGBT's (Insulated Gate Bipolar Transistors). The ratio of voltage to frequency is kept constant, resulting in an optimal motor control and very silent operation of both motor and frequency inverter.
Available for single or three phase motors up to 46 A.

The desired motor speed can be adjusted manually via a knob (local or remote control) or in function of CO2, air quality or another parameter (demand based). In this second scenario, an HVAC sensor is connected to the fan speed controller to calculate the optimal fan speed. More information can be found on the Sentera solutions page.
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