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Method for running at least one motor

A current and current value technology, applied in the direction of controlling multiple AC motors, motors, motor parameter estimation/correction, etc., can solve problems such as consumption, short torque adjustment time, and target conflicts

Active Publication Date: 2022-04-19
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the necessary magnetic flux is continuously adjusted, the magnetizing current necessary for this causes an unnecessary consumption for all other operating states
Therefore, this undesired consumption and the desire for short torque adjustment times lead to a conflict of goals between efficiency and torque dynamics

Method used

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  • Method for running at least one motor

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Embodiment Construction

[0036] figure 1 A vehicle 2, here designed as a motor vehicle, is shown in a schematic illustration, said vehicle having a front axle 4 on which front wheels 6 are arranged and a rear axle 8 on which rear wheels 10 are arranged , these wheels touch the ground that the vehicle 2 is driving on. For driving the vehicle 2 , the vehicle has at least one electric machine 12 which is designed to convert electrical energy from at least one battery 14 into mechanical energy and supply at least one wheel 6 , 10 and / or at least one axle 4 , 8 . In this case, the value of at least one electrical operating variable, for example at least one voltage and / or at least one current, is set by at least one power electronics unit 16 for at least one electric machine 12 .

[0037] The likewise schematically illustrated embodiment of the system 18 according to the invention has at least one controller 20 and at least one sensor 22 , 24 , 26 of the vehicle 2 . Each sensor 22 , 24 , 26 is designed ...

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PUM

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Abstract

The invention relates to a method for operating at least one electric machine (12), which is designed to drive a vehicle (2), to determine a value for at least one operating variable of the vehicle (2), from which at least The value of an operating parameter predicts the torque change of at least one motor at a target time, the current for magnetizing the at least one motor (12) is adjusted to a current value before the target time, and the current value for magnetization is adjusted at the target time Adapt and change.

Description

technical field [0001] The invention relates to a method for operating at least one electric machine and a system for operating at least one electric machine. Background technique [0002] Vehicles designed as electric vehicles can have a plurality of asynchronous machines as propulsion units. In order to ensure the highest possible range for the vehicle, the asynchronous electric machine is operated with a minimum of consumption, the magnetic flux being adapted to the respective operating state or load state. If the operating state changes, for example at the start of an overtaking process or when the load distribution between the front and rear axles changes, the magnetic flux is adapted by the machine control to the new target torque, so that the asynchronous motor consumption is kept to a minimum. The time curves of magnetization and demagnetization of induction motors can be indicated by exponential functions. The time constants associated with this exponential functi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20B60L15/28H02P5/74
CPCB60L15/20B60L15/28H02P5/74H02P2207/05H02P21/20Y02T10/64Y02T10/72B60L2260/42B60L2260/50H02P23/14
Inventor S·黑贝尔M·亚当
Owner AUDI AG