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

variable frequency drive with a three phase induction motor

Status
Not open for further replies.
M

mansoorsaleem

Newbie level 2
Joined
Apr 22, 2017
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
18
variable frequency drive with three phase inducton motor

i am working on variable frequency drive with three phase induction motor gate driver circuit is creating problems as i have three pwm output from arduino and using ir2104 as gate driver but it is giving low out put but high output is not coming out good kindly tell me its solution(i have used 10uF,33uF,50uF capacitor)
 

Re: variable frequency drive with three phase inducton motor

Hi,

IR2104 problems are very frequently discussed here.
Therefore I´m very sure you will find the solution in other threads.
Usually the problem isn´t the IC, but some misunderstandings in the bootstrap functionality.

--> Use the search function. Read through other threads.

If you don´t find a solution, then we need to see your (exactely your) schematic, the PCB layout, scope pictures of input and output signals.
All external connections, voltages, frequencies, duty cycle....

Klaus
 

Re: variable frequency drive with three phase inducton motor

68uF and 100nF both in parallel in the bootstrap circuit will be fine. What is the voltage rating of the capacitor(s) ?
 

Re: variable frequency drive with three phase inducton motor

Hi,

68uF and 100nF both in parallel in the bootstrap circuit will be fine. What is the voltage rating of the capacitor(s) ?
Click to expand...
Wow...Why 68uF?

I usually use 100nF ... 1uF.
--> Read datasheet and application notes about how to calculate bootstrap capacitor.

Klaus
 

Re: variable frequency drive with three phase inducton motor

can any one here who intermix my arduino code for lcd interfacing
function code and lcd display code is there but i am new to arduino UNO and have little time kindly make it intermix??
 

Re: variable frequency drive with three phase inducton motor

I think you might want to cut the problem apart,
at the gate predrive interface (Arduino to half bridge
drivers). Begin with rigging a correct-digital-outputs-
level low duty pulse drive to one half bridge control
input (pair?) and attach to one phase of the motor
(return others to ground) and see if it's the half
bridge or the uC that's got the problem. Poking code
when you haven't got the power legs right, just
means you're "wasting your time and annoying the pig".
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top