Fig 1.
Parallel agricultural hybrid tractor drive system structure diagram.
Table 1.
Transmission ratios of each gear and their theoretical velocity.
Table 2.
Particular parameters of agricultural hybrid tractor.
Fig 2.
MAP diagram of diesel engine numerical model.
Fig 3.
MAP diagram of motor numerical model.
Fig 4.
The relationship between power battery characteristics and SOC.
(a) The relationship curve between the charging or discharging internal resistance of the power battery and the SOC; (b) The relationship curve between power battery electromotive force and SOC.
Fig 5.
Schematic diagram of tractor simulation model.
Fig 6.
Adaptive cubic exponential forecasting method.
Fig 7.
Predictive control strategy solution flow chart.
Fig 8.
Tractor plowing working conditions diagram.
Fig 9.
Comparison chart of plowing resistance prediction results.
Fig 10.
Comparison chart of plowing velocity prediction results.
Fig 11.
Forecast result error analysis chart.
Fig 12.
Motor power comparison chart.
Fig 13.
Diesel engine power comparison chart.
Fig 14.
SOC change comparison chart.
Fig 15.
Tractor energy consumption cost analysis chart.
Fig 16.
Diesel engine map for plowing operations.
Fig 17.
Motor map for plowing operations.