What does a fan regulator do?

What does a fan regulator do?

From Superfan, India’s first super energy efficient ceiling fan

Regulators, as the name suggests, regulate or control the speed of the fan motor. They have been around since the 1950s, and there are a few types of them.

Resistive regulator  

These are the box type regulators, found in many old building and homes. It has a wire wound resistor with different contact points as the speed positions, with each contact point corresponding to a resistance value. The presence of resistance reduces the voltage supplied to the fan. In an AC induction motor, the input supply determines the speed so each contact point corresponding to a specific speed.  

Since resistors are used, the input supply is limited to the fan and emitted as heat by the resistor. If more supply is limited, say at the first speed, the loss of the energy is significant. In general, the fan consumes the same energy at all speeds as the input supply is always the same, the unused supply is released as heat. Also, the size of these regulators is large! 

Phase angle-controlled regulator  

Phase angle-controlled regulators employ active semiconductor devices and are commonly known as dimmer switches. The voltage across the semiconductor device is varied to alter the voltage across the fan, eventually, speed is continuously varied.  

When compared to resistive regulators, the power consumption is less but the phase-controlled regulators are expensive. Speed control is not linear and hence they produce humming noise while in operation. The failure rates are high, as active devices are susceptible to power supply transients. EMI/RFI interference in these regulators create disturbances in T.V. and radio sets. 

Inductive regulator   

An inductive type fan regulator has inductive reactance (inductive coil with various contact points) that is varied to achieve speed regulation.  Similar to resistive type regulators, the inductive type regulators also contribute to power loss.  

The speed of the fan decreases with the increase in the number of turns connected in the inductance coil winding. Heat and power loss are low in these regulators. The disadvantages are low power factor, cost, weight, and bulkiness. 

Capacitive regulator or electronic regulators 

They control the voltage across the fan is controlled by a capacitor, the voltage across the fan determines the fan speed. Capacitive regulators are energy efficient with linear speed control, quiet operation without humming noises and highly reliable than electronic type regulator.  They are commonly found in two varieties: 

  1. Movable type 
  1. Step type 

Regulator-less or remote-controlled ceiling fans 

Regulators, in general, contribute to power loss by dissipating heat in the circuit. They may require a heatsink in the circuit because of the inefficiency.  These disadvantages are overcome by BLDC ceiling fans like Superfan because the speed is regulation is integrated with the electronic commutation of the motor. This feature enables straightforward compatibility with remote control.  So, in addition to the inherent energy and money savings of BLDC ceiling fans, there is extra energy and money savings by eliminating the need for regulators. And of course, gives an extra comfort of changing the speed without moving from the place. 

Superfan Ceiling Fans – Regulator Models

When can you choose regulators over remote control? 

Despite their disadvantages, regulator ceiling fans find applications in bulk installations like public places, industries and organizations, where remotes are hard to maintain. There are regulator models BLDC ceiling fans, Superfan BLDC ceiling fans have a separate regulator model catalogue.

Contact us at +91 94890 78737 or email at helpdesk@superfan.in to learn more.

3 thoughts on “What does a fan regulator do?

  1. How does regulator works in a bldc ceiling fan. As I have seen some models of an atomberg and Orient electric atomiser ceiling fan too can be operated with regulator. Is it as good as operating with remote ? Also Orient electric atomiser is too cheap on Flipkart only ₹2699 does it has any issues or drawback in comparison with superfan X1 ?

    1. Dear Mr. Shubham,

      Thanks for the comment, we appreciate it.

      Superfan – Super X1 has an edge in terms of efficient power usage, air delivery (230 CMM), 5 years of warranty and comes with a remote control in comparison with Orient Electric Atomiser fan (220 CMM). Regulator-less BLDC fans give you extra energy and money savings. Since the fan’s speed regulation is integrated with the electronic commutation of the fan motor, it also gives you extra comfort to change fan speed without moving from your place using the remote control. Superfan speeds can be controlled using a remote or wall switch, hence there is no regulator needed which could save space on your switchboard.

      Superfan regulator solution is better for overall performance than the other BLDC fans in the market. To know more in detail, please visit our blog: REGULATOR BLDC CEILING FANS

      Hope this answers all your questions. Thanks again for your valuable time.

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