Multi-stage type slope-perception current-limiting control device and method for motor

A control device and control method technology, applied in the direction of single motor speed/torque control, etc., can solve the problems of reduced endurance, unsatisfactory, and inability to adjust the current limit value, so as to increase power consumption, increase load capacity, and increase strain Effects of abilities and range of use

Inactive Publication Date: 2011-10-19
SHIHLIN ELECTRIC & ENG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in current brushless motor controllers with a current limiting mechanism, only a single current upper limit is set to protect the motor and the control device. The control device can only know the current load on the motor through the output current value. , so it is not possible to adapt to changes in the environment in the application, such as: climbing operation or loading heavy objects, etc.
In application, if the current upper limit is set too large, the climbing ability of the electric vehicle can be improved, but the endurance will decrease due to the large power consumption; if the current upper li

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  • Multi-stage type slope-perception current-limiting control device and method for motor
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  • Multi-stage type slope-perception current-limiting control device and method for motor

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Embodiment Construction

[0027] The detailed description and technical content of the present invention are now described as follows in conjunction with the drawings:

[0028] see figure 1 , is a schematic diagram of the system of the present invention. The present invention is connected to a current input 31 of a power supply 30, and is used to control and drive a current limiting control device 20 of a motor 10. The current limiting control device 20 includes: a driving circuit 24, and the driving circuit 24 is used to provide a current Output 241 to the aforementioned motor 10 to drive the motor 10; a current-limiting microcontroller 23, which has several high-limit current values ​​and multi-stage current-limit value settings for normal current-limit values, wherein the current-limit microcontroller There are at least two high-limit current values ​​higher than the normal current-limit value in 23, which is different from the known only one normal current-limit value and one high-limit current va...

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Abstract

The invention discloses a multi-stage type slope-perception current-limiting control device and method for a motor. The method comprises the following steps of: detecting an angle of a road surface slope by a slope sensor so as to supply slope change; with the help of a current feedback signal and a motor rotation speed signal, setting and controlling a multi-stage type current-limiting value; setting maximum current-limiting values of different sizes; and properly supplying extra energy to the motor so as to meet the change of the current environmental slope, wherein the electric energy consumption is effectively reduced; and the cruising ability is improved.

Description

technical field [0001] The invention relates to a motor control, especially a motor control and method with a multi-stage current limiting mechanism. Under the condition of a fixed power supply, the motor can distinguish the difference between the load size and the gradient change, and when the environment changes , will not reduce the climbing ability of the vehicle due to the increase of the load, and can increase the adaptability and application range of the vehicle. Background technique [0002] In general current-driven motor control, in order to avoid excessive current or peak signal generation, not only may cause adverse effects on current efficiency and cost, but also increase audible noise. Therefore, there is a current-limiting control device in the motor control device. When the control device encounters a current overload situation, it will start to limit the current output, so that the motor will operate below the maximum limit current, and prevent the motor coi...

Claims

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Application Information

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IPC IPC(8): H02P6/08
Inventor 许修豪赖成谋
Owner SHIHLIN ELECTRIC & ENG CORP
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