Hello, I need urgent help on this matter and I really appreciate it if anyone can clear my doubts! Thanks in advance!
I have a motor driver evaluation board, namely NXP's FRDM-HB2001-EVM, which functions as a simple DC to AC converter based on the PWM input it receives. I am interested in the efficiency of this device but I need some help in properly calculating the input and output power because because PWM is involved.
My setup is as follows:
- A PWM signal generated by an Arduino UNO is input into the evaluation board, FRDM-HB2001-EVM.
- Input voltage of 7.2V is supplied into the FRDM-HB2001-EVM, and then input current, output voltage and output current are measure using a voltage probe and a current clamp with an oscilloscope.
- The input voltage is a constant DC voltage, but the input current, output voltage and output current are 'AC' due to the effect of the PWM input, which makes the HB2001 function as a half bridge.
I would like to ask, what is the best method to accurately calculate the input power, output power, and the efficiency just by the values obtained through the oscilloscope?
Thank you very much for you help as I really need some advice in this area!!
