Range extender control system and method

Abstract

The invention discloses a range extender control system and method. In the control system, an output end of a generated power demand module is connected to an input end of a state management module and an input end of an engine input power demand module. An output end of the state management module is connected with an input end of an engine control module and an input end of a power generator control module. An output end of an engine output power demand module is connected to the input end of the engine control module and the input end of the power generator control module. An output end ofa range extender working mode selecting module is connected to the input end of the engine control module and the input end of the power generator control module. Power generation requirements of different forms can be received and responded to according to the requirements of a vehicle system, and meanwhile the application occasions of an electric vehicle range extender are enlarged by flexibly adding and deleting sub-modules in a vehicle energy request queue.

Description

technical field [0001] The invention relates to a control system and a control method, in particular to a control system and a control method for a range extender. Background technique [0002] Chinese patent CN201710535437 provides an optimal control method for an electric vehicle range extender. The purpose of this patent is to design a multi-stage power following control method suitable for the operation of urban extended-range electric vehicles. The technical means and effect achieved in this patent are: design the engine speed according to the required power, select N operating points on the optimal fuel consumption curve for constant speed operation, and adjust the torque of the range extender generator to Make the actual output power value of the range extender follow the current power demand, and at the same time determine the current demand value of the range extender in the static coordinate system, and determine the driving signal of the generator power switch by...

AI Technical Summary

Problems solved by technology

[0006] 1. With the application of electric vehicle systems becoming more and more extensive and the working conditions becoming more and more complex, the power requirements of the vehicle system for the range extender are also becoming more and more diverse. The existing technology fails to provide different forms The processing strategy of the range extender control system when the power is requested

[0007] 2. In the range extender system, the engine and the generator work through a mechanical connection, and the existing technology fails to provide decoupling control of the speed and torque of the engine and generator

[0008] 3. The existing technology only obtains the operating speed and torque of the range extender based on the fuel consumption characteristics of the engine, and fails to comprehensively and effectively consider the characteristics of engine emissions, noise and generator efficiency

[0009] 4. The existing technology does not provide protection and treatment measures under the working conditions such as overload and untimely speed response during the power generation process of the range extender

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