Distributed energy supply system and its control method based on multi-followers

Abstract

The invention provides a multi-follower based distributed energy supply system and a control method therefor, and relates to the field of electric vehicles. According to the system, a fuel supply and acquisition system is connected into a follower set and used for providing a power source for the follower set; and the follower set and a power battery are together connected into a driver control system, the power source is provided for a driver system under the control of the driver control system, then the driver system drives a load to work, and the outputs of the follower set and the power battery are controlled and coordinated through a distributed system energy management unit. According to the system and the control method, one or more followers can be controlled to be effectively combined with the power battery according to power demands to perform optimal distribution of complete vehicle energy demands so as to meet efficient running demand of the energy supply system. The invention furthermore provides the control method for the system. According to the method, the adaptive control can be performed according to characteristics of the distributed energy supply system, so that the finiteness of a single-follower scheme in efficiency optimization is overcome.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a multi-follower-based distributed energy supply system and a control method thereof. Background technique [0002] Electric vehicles are considered to be the most potential new energy vehicle technology to solve the energy crisis and environmental pollution. However, pure electric vehicles have the problems of short driving range and long charging time. The emergence of extended-range electric vehicles effectively makes up for this deficiency. [0003] The range-extended electric vehicle is equipped with a follower that can increase the mileage, and serves as the power source of the vehicle together with the power battery. At present, the research on energy management strategies of extended-range electric vehicles mainly focuses on the following types: thermostat energy management strategies, power following energy management strategies, instantaneous optimization energy managem...

AI Technical Summary

Problems solved by technology

Among the above four energy management strategies and methods, only the thermostat energy management strategy has been popularized and applied, and other strategies and methods are immature and not very practical

[0004] At present, in the process of formulating the energy management strategy and method of the whole vehicle, at most the driving state of the whole vehicle is considered, that is, the depth of the accelerator pedal, the braking state, the SOC of the battery and the output power efficiency point of the follower, etc., and the formulation of the control rules is basically It is based on experience, and the control parameters are determined during the test run. Although it has certain practicability, it cannot make the whole vehicle get the best performance.

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