generator mode operation is performed by the pcu 102 and that appropriate action is taken in the event a fault is detected the equalizer and phase balance control module 207 of fig2 ensures that each dc dc converter module 202 provides approximately equivalent power during generate and start mode operation as well as insuring the converters are synchronized as desired the auxiliary converters module 208 of fig2 provides general control power to the various pcu 102 subsystems and may be comprised of one or more converters the speed phase detection module 204 is connected to all three phases of the ac voltages from the pmg 101 and to the associated circuits in the bridge module 201 the speed phase detection module 204 is also connected to the control circuits of all three bridge modules 201 the ground fault detector module 205 is connected to all three phases of the ac voltages from the pmg 101 and to the control circuits of all three bridge modules 201 and all three dc dc converter modules 202 the control logic module 206 is connected to ground fault detector module 205 the equalizer control module 207 all three phases of the ac voltages from the pmg 101 and to the control circuits of all three bridge modules 201 and all three dc dc converter modules 202 the auxiliary converter modules 208 are connected to all circuits within the pcu 102 to provide control power the emi filter module 209 of fig2 is a low pass filter that reduces ripple frequency and high frequency emissions that are a natural result of the switching function within the dc dc converter modules 202 in.