Dynamic Programming-Based Energy Management System for Range-Extended Electric Bus

Table 1

Powertrain parameters of range-extended electric bus.

Bus	Size (length × width × height)/mm
	Bus mass/kg	13400
	Passenger mass/kg	2760
	Windward area/m^2	7.83
	Air resistance coefficient	0.75
	Rolling resistance coefficient
	Rolling radius /m	0.512
	Speed ratio of main reducer	6.2
	Speed ratio of transmission	2.18
Motor	Continuous power/kW	100
	Peak power/kW	180
	Maximum torque/N⋅m	860
	Maximum speed/r/min	4500
	Operating voltage/V	300~450
Engine	Displacement/L	1.9
	Power/kW	82/4000 r/min
Generator and generator controller	Rated power/kW	50
	Rated torque/N⋅m	220
Power battery	Capacity	180 Ah
	Operating voltage/V	350~460