25X8164C1L | General Electric Power Conversion Module

The Power Conversion Module (PCM) consists of an integrated IGBT inverter modulethat contains six IGBTs connected in a 3-phase inverter configuration. Two of the sixIGBTs are used to create the PWM dc output for field excitation. A third IGBT is used todischarge the dc link capacitors into an external DD resistor to prevent overvoltage.Input power is either rectified ac, dc from a station battery, or both.In the dual redundant application, there is a primary control and PCM (M1) and a backupcontrol and PCM (M2), which are identical. A transfer module evaluates the health of theprimary and backup controls and selects which control is active to provide maximumreliability and availability