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A torque control method for an electric vehicle

A technology for torque control and electric vehicles, applied in motor generator control, electronic reversing motor control, electric vehicles, etc., can solve problems such as uneven torque distribution, poor riding acceleration experience, etc., to improve riding Accelerated experience, good market promotion prospects, strong wild effect

Active Publication Date: 2021-10-01
广东高标智能科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The mainstream speed regulation scheme in the existing electric vehicle market is to calculate the target speed according to the opening of the handlebar, and then calculate the target torque through the speed PI loop, which exists due to the uneven torque distribution corresponding to the opening of the handlebar. Therefore, it is necessary to study a method to improve the acceleration effect of electric vehicles to solve the above problems

Method used

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  • A torque control method for an electric vehicle
  • A torque control method for an electric vehicle
  • A torque control method for an electric vehicle

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present invention Inside.

[0036] This embodiment provides a torque control method for an electric vehicle, using the handle to directly calculate the target torque to replace the existing speed control scheme of the handle. The moment load factor is L, and the peak value of the current vector is I S-MAX , the voltage vector is U S , the peak value of the voltage vector is U S-MAX , the voltage vector base value...

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Abstract

The invention discloses a torque control method for an electric vehicle, which includes the following steps: S1, obtaining the handlebar opening R and the voltage vector U through sampling S and bus current I DC ; S2. According to the handle opening R, calculate the handle torque command I from the motor torque external characteristic curve equation S‑REF1 ; S3, according to the bus current I DC Calculate the current torque command I S‑REF2 ; S4, according to the voltage vector U S Calculate the speed torque command I S‑REF3 , S5, turn the handlebar torque instruction I obtained with step S2 S‑REF1 As the main torque output, the current torque command I obtained in step S3 S‑REF2 and the speed torque command I obtained in step S4 S‑REF3 Correct the main torque output as the limiting amount, and calculate the target torque command I S‑REF , its calculation formula is: target torque command I S‑REF =Min[I S‑MAX , I S‑REF1 , I S‑REF2 , I S‑REF3 ].

Description

technical field [0001] The invention relates to the field of motor vector control, in particular to an electric vehicle torque control method. Background technique [0002] With the increasing demand for electric vehicles, people have higher requirements for the riding acceleration experience of electric vehicles, and various performance indicators have been proposed in terms of acceleration time and acceleration effect. The mainstream speed regulation scheme in the existing electric vehicle market is to calculate the target speed according to the opening of the handlebar, and then calculate the target torque through the speed PI loop, which exists due to the uneven torque distribution corresponding to the opening of the handlebar. Therefore, it is necessary to study a method to improve the acceleration effect of electric vehicles to solve the above problems. Contents of the invention [0003] The object of the present invention is to solve the above problems and provide ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00H02P21/20B62M6/45B60L15/20
CPCB60L15/20B60L2200/46B60L2240/423B62M6/45H02P21/0003H02P21/20Y02T10/64Y02T10/72
Inventor 陈清付简瑞谦周乐栓余小波
Owner 广东高标智能科技股份有限公司
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