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

Simple frequency converter

Status
Not open for further replies.
mrcube_ns

mrcube_ns

Advanced Member level 1
Joined
Apr 10, 2002
Messages
452
Helped
48
Reputation
96
Reaction score
34
Trophy points
1,308
Location
Europe
Activity points
3,813
Hello brothers,

I want to make simple frequency converter for single phase induction motor.

General idea:
1. MCU is brain (some PIC)
2. Input of MCU is analog reference value.
3. Output is PWM signal for driving power mosfet bridge.
4. Type of regulation: U/f

Does someone has similar example, advice, sch or so?

Thanks in advance.

I'll share my finall (hopefully working) project to everyone.

Best regards,

Mr.Cube
 

The problem starts with the term single phase induction motor. It doesn't exist as such, cause an induction motor absolutely needs a rotating field and some means to generate it. There are mainly split pole and capacitor motors. The latter is actually a two-phase motor, that should be driven by a two or three phase inverter, to achieve a suitable VFD operation.There's a profound Microchip application note, that has been often quoted in this forum, showing a solution. A split pole motor generally has very limited VFD capabilities.

https://ww1.microchip.com/downloads/en/AppNotes/00967A.pdf
 

    mrcube_ns

    mrcube_ns

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top