Electronic – the use of the fourth leg, the one with igbt in series with the diode, in the infineon power module

igbt

The circuit shown below is the schematic of infineon PIM module. I am specifically interested in FP15R12W1T4. From the schematic I could understand all elements other than the 4th leg which has an igbt in series with a diode. I am new to this field. I assume, that leg and terminals are provided to feedback the present voltage level under a specified switching frequency.

Infineon EasyPIM

Best Answer

By applying a DC shunt to the battery, the motor instead of free wheeling can regenerate and brake the motor. using the back EMF of the motor/generator.

There are different implementations including Battery Regen and single phase Remanence braking.

This is why there is a single B phase brake on a 3 phase UVW phase rectifier or bridge driver.

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