Page 230 - Uninterruptible Power Supplies
P. 230

Kinetic Energy as an Alternative Power Source
            228   Chapter Eight


                                         IGBT Inverter
               +
                                                                  Motor,
              To UPS                                             Generator
            Battery Input                                           &
                                                                 Flywheel
               –                                                  Energy
                                                                 Storage
                           DC Buss
                                                                Flywheel  Sensors  Field  Drive  Bearing  Drive




                   DC Monitoring       IGBT Control   AC    Flywheel Sensors:
                                                    Monitoring  Over speed
                                                              Over voltage
                              Control and System Monitoring  Over temperature
                                                               Vibration
                                                 Comm   120 VAC     Local EPO


            Figure 8.6







































            Figure 8.7
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