Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Speed control of single phase induction motor of a fan

Status
Not open for further replies.
E

Eagleye

Newbie level 2
Joined
Jun 18, 2012
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,296
I want to design a circuit to control the speed of the motor of a single phase induction motor of ceiling fan into three level( max tourque -2800 rpm ). I want to do it by controlling voltage, in that case how should I do it?

I know that one way is to provide several connecting points or taps on the motor winding and another one is by using light dimmer type circuit. The dimmer varies the effective voltage by chopping the waveform with a triac.

Which one is more efficient and cost effective?
 

I suggest triac dimmer..

If you only need three steps you can use resistor's. You can find it in conventional fan regulators.
 
Speed control of single phase induction motor of a fan. Induction motors lock onto the frequency of the mains, if the voltage is low, they slow down, take more current and finally stop. Only brush type (universal motors) can be controlled by reducing the voltage into them.
Frank
 

I would not recommend using a triac dimmer for a single phase induction motor. This solution is only valid for universal motors. You should rather vary frequency using a rectifier + inverter.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top