Power Flow Control Complex Hybrid Control

The complex hybrid vehicle configurations are of two types:

• • Front hybrid rear electric

• Front electric and rear hybrid

 

Both the configurations have six modes of operation:

• • Mode 1: During startup (Figure 5a), the required traction power is delivered by the EMs and the engine is in off mode.

• Mode 2: During full throttle acceleration (Figure 5b), both the ICE and the front wheel EM deliver the power to the front wheel and the second EM delivers power to the rear wheel.

• Mode 3: During normal driving (Figure 5c), the ICE delivers power to propel the front wheel and to drive the first EM as a generator to charge the battery.

• Mode 4: During driving at light load (Figure 5d) first EM delivers the required traction power to the front wheel. The second EM and the ICE are in off sate.

• Mode 5: During braking or deceleration (Figure 5e), both the front and rear wheel EMs act as generators to simultaneously charge the battery.

• Mode 6: A unique operating mode of complex hybrid system is axial balancing . In this mode (Figure 5f) if the front wheel slips, the front EM works as a generator to absorb the change of ICE power. Through the battery, this power difference is then used to drive the rear wheels to achieve the axle balancing.