Efficiency improvement method, device and medium of electric drive system, motor controller
An electric drive system and motor control technology, which can be applied to the efficiency improvement of electric drive systems, motor controllers, and media fields, and can solve problems such as high energy consumption.
Active Publication Date: 2021-11-05
奇瑞新能源汽车股份有限公司
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Problems solved by technology
At present, the control scheme of the electric drive system generally only controls the motor according to the voltage, which consumes a lot of energy.
Method used
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[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0028] The following describes the efficiency improvement method, device, medium, and motor controller of the electric drive system according to the embodiments of the present invention with reference to the accompanying drawings.
[0029] figure 1 It is a flowchart of an efficiency improvement method for an electric drive system of an electric vehicle according to an embodiment of the present invention.
[0030] Such as figure 1 As shown, the efficiency improvement method of the electric drive system of an electric vehicle inc...
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The invention discloses a method, a device, a medium, and a motor controller for improving the efficiency of an electric drive system. Among them, the efficiency improvement method includes: obtaining the driver's demand torque command; obtaining the bus voltage of the electric drive system, and obtaining the temperature of the motor; obtaining the d-axis current and q-axis current of the motor according to the driver's demand torque command, the bus voltage and the temperature of the motor current, and control the motor according to the d-axis current and q-axis current of the motor. This efficiency improvement method controls the motor according to the bus voltage and motor temperature of the electric drive system, which can realize precise motor control in the full range of power battery voltage, thereby improving the efficiency of the electric drive system, reducing the energy consumption of the vehicle, and improving the efficiency of the electric drive system. Vehicle mileage.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to an efficiency improvement method, device, medium, and motor controller of an electric drive system. Background technique [0002] The electric drive system is the system that consumes the most energy in electric vehicles, so it is meaningful to reduce the energy consumption of the electric drive system. At present, the control scheme of the electric drive system generally only controls the motor according to the voltage, which consumes a lot of energy. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, the first object of the present invention is to propose a method for improving the efficiency of the electric drive system of an electric vehicle, so as to improve the efficiency of the electric drive system, reduce the energy consumption of the vehicle, and increase...
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IPC IPC(8): B60L15/20H02P21/22H02P29/60
CPCB60L15/2045B60L2240/421B60L2240/423B60L2240/425B60L2240/427B60L2240/429H02P21/22H02P29/60Y02T10/64Y02T10/72
Inventor 李庆国舒晖刘靓张杰陈士刚王瑛杭孟荀
Owner 奇瑞新能源汽车股份有限公司