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Thank you guys for your responses and valuable comments. Hope switching noises reduced almost 60 to 70%.
Even if there is any other think to be noted (like PCB design , choosing FET's or any calculations) for bldc drives kindly advice me, it would be really helpful for me to re-design it.
Sorry...
Yes iop95, i use separate 3.3v regulator (lm111733v) for micro controller.
Sure i will try that LC filter in ir2110 supply pins. And also increase the resistance accordingly. I cant get this line friend "If the noise has a radiant component will be more complicated "
Also i use gate driver long...
Yes FVM, what you said is correct. If we don't use the proper probes or probe connection, there will be inaccurate waveform.
I connect the probe almost correctly(very near to micro controller's supply). Because if we connect the wire too long there will be a parasitic inductance across the...
Hi friends, I am driving bldc motor(1kw) using stm32f1 micro controller and keil micro vision software as a compiler.
While running motor on no load condition....
- Motor runs good.
- Sensing sensor values, analog values, measuring rpm, etc which are all works good.
While running motor on load...
Well thats good FvM, then i will go by "speed setpoint and actual speed (process value) are inputs, the controller output (manipulated value) steers the motor speed".
I want to apply PID algorithm for my bldc drive, But i want to now more about PID concept.
I searched in internet and the understand a little about this algorithm.
PID concept in motor drives...
1. PID make the system as a closed loop.
2. By calculating the input speed by resulted output...
The waveform get shifted good by using level shifter circuit. Thank you friends for your response..
- - - Updated - - -
Sure i will try it
- - - Updated - - -
I tried with decoupling capacitor at the output of the waveform . Which work good for a single circuit , for example Wien bridge...
I am trying to generate the SPWM using analog circuit, by comparing sine with triangular wave the output will be Sinusoidal PWM.
- Here i am generating Sine wave of 50 HZ using wein bridge oscillator. And it outputs good.
- Triangular wave is generated by square wave generator and...
Hi friends,
We are designing 3 phase inverter for a long while. Our controller works fine at no load condition when a load attached the controller stucks.
Motor specification:
-500w motor
-500rpm
-13amp rated current
At no load condition..... Works good
- current 1.9amps
- 400rpm
At load...
Just now i am tested the motor with my controller once again for one hour at 48 v and 2.5 amp (no load)...
The measured result is...
min..... motor temperature in degree C
0...... 30
5...... 43
10...
I am driving a 1KW bldc motor (CYM-A1-120) using my bldc inverter. And i am not sure the frequency of motor, So i constantly run at 7Khz. The motor runs fine with a little noise. The temperature of the motor gradually increases.,
(i,e) the room temperature =30 degree C...
No friend, i have changed the code slightly as i mentioned above(i use interrupt) and changed rx[] size.
I getting a small problem,
- Whenever i transmit to GSM as "AT", GSM will respond to arm as"OK" which will be stored in rx[] (since i used interrupt).
That is, rx[0-1] will have "OK"
-...
Thank you for the response, the problem was solved almost..,
I use the interrupt for uart receive , now i am getting the response as "OK" from GSM.
But i am having a small problem in that, the received response i saved in the single variable which is a circular buffer.
For example:
uint8_t...
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