Control method of a range extender system and a working machine
By connecting the engine and multiple generators in series, and combining optimization calculations and torque compensation, the fuel economy and power generation efficiency of the range extender system are optimized, solving the problems of fuel economy and high power demand in existing technologies, and achieving efficient fuel utilization and power output.
CN122429014APending Publication Date: 2026-07-21JIANGSU XCMG CONSTRUCTION MACHINERY RESEARCH INSTITUTE LTD
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Patent Information
- Application Number
- CN202610664788.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-14
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
Existing range extender systems have poor fuel economy and cannot meet high power demand while ensuring power generation efficiency.
Method used
By connecting an engine and multiple generators in series, the optimal speed and torque distribution coefficient are obtained through optimization calculations. The generators are controlled to maximize fuel conversion efficiency, and torque compensation is performed when there is a power deviation to ensure that the generators do not exceed physical limits.
Benefits of technology
It improves the fuel economy and power generation efficiency of the range extender system, reduces the total system weight and control costs, and enhances system reliability and power response while meeting high power requirements.
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Smart Images
Figure CN122429014A_ABST
Abstract
The present disclosure relates to a control method of a range extender system and a working machine. The range extender system comprises an engine and a plurality of generators connected in series. The control method comprises: obtaining a total vehicle demand power, determining a combination of a plurality of speed-demand torques according to the total vehicle demand power to obtain a first set; screening the first set according to specific fuel consumption of the engine to obtain a second set; for the second set, obtaining a first target speed and a first target distribution coefficient under the total vehicle demand power by optimization calculation with the target of maximizing fuel conversion rate; controlling the engine to operate according to the first target speed, obtaining a plurality of first target distribution torques based on the first target distribution coefficient, and controlling the plurality of generators to work according to the plurality of first target distribution torques. The control strategy with the maximum fuel conversion rate can be obtained by optimization calculation, so that the operation state of the range extender system always has optimal fuel economy, and the power generation efficiency and fuel economy of the range extender system are effectively improved.
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