three shunt resistors method of current sensing in 3 phase inverter

[shady_mamdouh_2011]

Posted on May 14, 2015 at 21:16

How can i calculate the phase currents (ia, ib, ic) from the currents of the 3 shunt resistors placed under the lower switches of the inverter?

like in steval-ihm023v3 #steval-ihm023v2

[Cesar cfg]

Posted on May 22, 2015 at 15:58

The IGBT's driver used in the card contains an operational amplifier that gives you a voltage(0 ==>3.3V) proportional to the current just you need the amplifier gain to compute the  current.