Typically, fans are sized and installed based on maximum ventilation requirements, but the maximum ventilation capacity is not always necessary. Installing an inverter allows control of the fan motor speed to meet the actual ventilation needs. By reducing the motor speed, the amount of energy required to power it is decreased (by up to 8 times), which in turn lowers costs and consequently reduces CO₂ emissions. When connected to a sensor system, inverters become even more effective by adjusting motor performance based on various preset parameters such as temperature, airflow, humidity, and more eliminating the need for manual adjustment.

How does an inverter work?

Frequency manipulation with an inverter involves converting the incoming mains voltage from AC to DC using a full-wave rectifier circuit. There is then a second DC link stage that smooths the waveform and ensures the inverter remains powered during use. The final stage generates a pulsed square wave voltage output to simulate an AC waveform as shown below:

Inverters can play a key role in energy-saving designs, but the benefits don’t stop there. Reducing the amount of time the motor runs at full speed not only saves energy but also reduces stress on the motor itself and any connected components. This means lower maintenance requirements and, again, cost savings. Installing an inverter on an older, worn system can even help extend its service life.

Discover the complete range of Invertek Drives frequency converters that can be paired with a new ventilation system or your existing one in your company. Download the app to calculate your savings NOW!