Vehicle-mounted diesel power generation system used in direct-current power distribution mode and energy management method of vehicle-mounted diesel power generation system

Abstract

The invention discloses a vehicle-mounted diesel power generation system used in a direct-current power distribution mode and an energy management method of the vehicle-mounted diesel power generation system. The vehicle-mounted diesel power generation system comprises a diesel generator, a diesel generator controller, alternating-current power distribution equipment, an AC (alternating current) / DC (direct current) rectifier, a DC / DC variator, direct-current power distribution equipment, a main control unit and a storage battery pack. According to the current load conditions, a reasonable load adjusting and controlling measure is taken by using the energy management method; while the fuel oil using efficiency of the diesel generator is improved, electric energy can be stored in an efficient charging area of the storage battery pack; in an efficient discharging area of the storage battery pack, the diesel generator is closed, and a load is powered by the storage battery pack; and when energy of the efficient discharging area of the storage battery pack is used up, the diesel generator supplies power for the mode again, and a power distribution control system takes the load adjusting and controlling measure again. The fuel oil using efficiency of the vehicle-mounted diesel power generation system can be improved, and the power supply time of the vehicle-mounted diesel power generation system is prolonged.

Description

Technical field [0001] The invention belongs to the field of power supply and distribution technology and its electric energy management, and in particular relates to a vehicle-mounted diesel power generation system in a DC power distribution mode and an energy management method thereof that can improve fuel utilization. Background technique [0002] For traditional vehicle-mounted diesel generator power supply, when working in the field where diesel cannot be supplied at any time, due to the limitation of diesel engine capacity and diesel generator characteristics, the power per liter of fuel that can be generated is within a certain range and the load power The relationship is linear, the lower the load power, the less useful power the diesel engine emits, and the diesel engine has the lowest fuel consumption rate per unit time at a certain output power at a certain speed, so the control system requirements for diesel generators are stricter , Improper control will cause waste ...

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Problems solved by technology

In addition, there are other methods such as the realization of vehicle energy management optimization based on hybrid power solutions, but they are different from the design ideas of the energy management method with independent on-board power station using DC power distribution proposed in this patent, and none of them involve this patent The strategy of adjusting the operating point of the diesel generator by adjusting the load of the battery pack so as to improve the fuel utilization rate and prolong the continuous power supply time of the entire power supply system

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