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Hybrid Vehicles
lightweight. The corresponding principle of operation is the same as the two
concentrically arranged double-rotor machines. In order to further improve
the efficiency and power density, the integrated double-rotor machine can
adopt the PM brushless topologies. Figure 12.17 and 12.18 show the corresponding radial-field and axial-field topologies, respectively (Eriksson and
Slip rings
PMs
Windings
Integrated doublerotor machine
AC-DC
converter
DC-AC
converter
Battery
Carbon
brushes
Differential
Wheel
Wheel
Engine
Figure 12.17
ECVT using integrated radial-field double-rotor PM machine.
Integrated doublerotor machine
Slip rings
Windings
PMs
AC-DC
converter
DC-AC
converter
Battery
Carbon
brushes
Engine
Differential
Wheel
Wheel
Figure 12.18
ECVT using integrated axial-field double-rotor PM machine.