A Design Method for Efficiency Distribution of Vehicle Driving Motor System
A technology for system efficiency and driving motors, applied in control systems, AC motor control, electrical components, etc., can solve problems such as high energy consumption and reduced cruising range, and achieve the effects of increasing cruising range, reducing energy consumption, and reducing average efficiency
Active Publication Date: 2019-04-16
HIGER
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Problems solved by technology
At present, the driving motors used in electric vehicles do not effectively match the operating conditions of electric vehicles in the stage of designing high-efficiency areas, which leads to the fact that the optimal performance of the motors is not fully utilized during actual operation of the vehicles, resulting in high energy consumption and reduced cruising range. question
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[0024] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The examples described below by referring to the accompanying drawings are illustrative only for explaining the present invention and should not be construed as limiting the present invention.
[0025] The design method of the efficiency distribution of the vehicle drive motor system disclosed by the present invention includes:
[0026] S1. Collect the output torque of the vehicle motor and the output speed of the motor in real time, and calculate the corresponding output power of the motor to form a sequence of original data groups.
[0027] For example, the original data group sequence includes three columns, namely the motor output torque column, the motor output speed column and the motor output power column, and each row of three data reflecting the motor output speed, motor output torque and motor output power constitutes a raw data group, t...
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The invention discloses a method for designing efficiency distribution of a vehicle driving motor system. The method comprises the following steps of in the actual driving process of the vehicle, collecting the output torque and output rotation speed of a motor in real time, and calculating to obtain the corresponding output power of the motor; in the obtained data sequence, properly processing the invalid data; calculating the accumulated power of each rotation speed interval and each torque interval, and drawing an accumulated power contour map using the output rotation speed of the motor as a transverse coordinate and the output torque of the motor as a longitudinal coordinate in combination with the output torque and output rotation speed of the motor. When the efficiency of the driving motor system is designed, the efficiency distribution of the driving motor system can be designed according to a motor working condition distribution diagram of the power. The method for designing the efficiency distribution of the vehicle driving motor system provided by the invention has the advantage that the average efficiency in the driving process of an electric vehicle is effectively improved, the energy consumption is decreased, and the endurance mileage is increased.
Description
technical field [0001] The invention relates to a drive motor system, in particular to a design method for the efficiency distribution of a vehicle drive motor system. Background technique [0002] Increasingly serious environmental and energy issues have prompted the promotion and application of electric vehicles in industry. However, the cruising range of electric vehicles is still a technical bottleneck. [0003] The driving motor system (hereinafter referred to as the motor system) is the core component of the electric vehicle, and its working efficiency directly affects the cruising range of the electric vehicle. Because electric vehicles have working conditions such as low-speed climbing, high-speed cruising, and rapid acceleration, the working conditions of the drive motor system are very complicated. For the current industry status, there is a lack of an effective method to design the efficiency distribution of the drive motor system based on the working conditions...
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IPC IPC(8): H02P23/00
Inventor 张琦程方斌张卫林熊金峰
Owner HIGER