A multi-motor control method, system and electric vehicle

A technology for multi-motor control and electric vehicles, applied in control systems, motor speed or torque control, electrical components, etc., can solve the problem of increased workload in material management

Active Publication Date: 2020-10-27
INVT ELECTRIC VEHICLE DRIVE TECH SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the same electric vehicle is matched with permanent magnet synchronous motors from different suppliers, multiple material codes are required to distinguish the different permanent magnet synchronous motors that the electric vehicle can be equipped with and the motor controller software corresponding to the permanent magnet synchronous motors one by one. Increased workload for material management

Method used

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  • A multi-motor control method, system and electric vehicle
  • A multi-motor control method, system and electric vehicle

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Embodiment Construction

[0041] The core of the present invention is to provide a multi-motor control method. The parameter groups and current tables of all the motors that the electric vehicle can be equipped with are stored in the storage unit in advance. For the same electric vehicle, only one storage unit is needed, which reduces the cost of materials. The number of codes is reduced, thereby improving the convenience of material management. Another core of the present invention is to provide a multi-motor control system and an electric vehicle.

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments...

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Abstract

The invention discloses a multi-motor control method comprising the steps of storing parameter sets of all motors configured in the electric vehicle and a current table corresponding to each parameterset one by one into a storage unit in advance; after a recognition command is received, outputting a preset voltage and a preset current to acquire the parameter set of a current motor configured inthe electric vehicle; judging whether the parameter set that is the same as the parameter set of the current motor exists in the storage unit; and if yes, calling the parameter set which is the same as the parameter set of the current motor and the current table corresponding to the parameter set one by one, to control an output parameter of the current motor. According to the method provided by the invention, the parameter sets of all motor that can be configured in the electric vehicle and the current tables are stored in the storage unit in advance, for the same electric vehicle, only a storage unit is needed, the quantity of material codes is reduced, and the convenience of material management is improved. The invention also discloses a multi-motor control system and the electric vehicle, with the abovementioned beneficial effects.

Description

technical field [0001] The invention relates to the field of motors, in particular to a multi-motor control method, system and electric vehicle. Background technique [0002] At present, electric vehicles generally use permanent magnet synchronous motors as the main power drive motors. When the motor controller adopts vector control algorithm, the output torque equation of permanent magnet synchronous motors is T=3 / 2×p×[ψ×I d -(L d -L q )×I d ×I q ], where p is the number of pole pairs of the motor, ψ is the flux linkage of the permanent magnet, L d is the direct axis inductance, L q is the quadrature axis inductance, I d is the direct axis current, I q is the quadrature current. In order to maximize the output torque characteristics of permanent magnet synchronous motors, the motor controller generally adopts the MTPA (Maximum Torque Per Ampere, maximum torque-to-current ratio) control method to control I d and I q , considering L d and L q vary greatly under di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P5/00
CPCH02P5/00
Inventor 童维勇周腾殷江洪
Owner INVT ELECTRIC VEHICLE DRIVE TECH SHENZHEN CO LTD
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