Rogowski Coil Interfacing for Constant Current Closed Loop Feedback (With OPAMP or delta-sigma ADC)

Karan123

Other Parts Discussed in Thread: TINA-TI, TIDA-00777

Hi,

This is continuation topic of below thread:

https://e2e.ti.com/support/amplifiers/f/14/p/912404/3371493

I have to update PWM Duty Cycle w.r.t for Current measurement from Rogowski Coil to achieve constant current of welding machine(s) ?

What is the best way for Interfacing Rogowski Coil for Current measurement for High Speed Closed Loop Feedback System ( Not For Energy/Current Measurement after 50Hz or 60Hz)

1) With Opamp

2) or with delta-sigma ADC

Is there way to do simulation of Rogowski Coil ?

Thanks in advance.. Please suggest..

Karan123

over 5 years ago

0 Joseph Wu over 5 years ago

TI__Guru* 97955 points

Karan,

I'd mentioned some ADCs that may be capable of Rogowski coil measurements in your post in the Data Converters forum here:

https://e2e.ti.com/support/data-converters/f/73/p/912520/3373169

I'm sorry, but I don't have any information about simulating a Rogowski coil. Tom Kuehl had mentioned the resources in the Amplifiers Forum here:

https://e2e.ti.com/support/amplifiers/f/14/p/912404/3371493

The post mentioned the resources found in TIDA-00777 and this design has a TINA-TI simulation. However, it's only the amplifier circuitry and does not include a model of the coil.

Joseph Wu

Sensors

Sensors forum

Rogowski Coil Interfacing for Constant Current Closed Loop Feedback (With OPAMP or delta-sigma ADC)