A hybrid drive system for off-roaders with a powered trailer to be used in the Arctic Region

摘要

The paper provides a rationale for a design intended to improve the off-road performance of vehicles when transporting freight or passengers over long distances on snow-covered roads at low ambient temperatures. The design includes a tractor unit with a cross-country wheeled chassis and a trailer with a drive axle. The tractor unit is equipped with a generator. Some of the electric power from the tractor unit can accumulate in the accumulator in the trailer. The trailer electric motor operates due to the electric power from the tractor unit. In this paper, we present a layout diagram for the main components of the drive of a combined power unit. We also describe the advantages of the design. Any off-roader equipped with an additional electric generator, control system, and electrical circuits can be used as a tractor unit. Depending on the tasks, this tractor unit can be operated both with the trailer and without it. The paper presents the results of modeling the power of the electric drive of the trailer at design speeds of 0–40 km/h and a maximum weight of the trailer of 1.5–4.5 tons. Characteristics of the tractor unit generator and electric accumulator are determined. The concept of “one-minute energy storage” is introduced. It characterizes the energy storage required for the electric traction drive to cope with short-term loads.