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Position sensorless bldcm closed-loop starting method, device and bldcm control equipment

A sensor and closed-loop technology, applied in the direction of control of electromechanical transmission, starting device, motor generator control, etc., can solve the problem of low starting efficiency, achieve the effects of avoiding current fluctuations, improving starting efficiency, and reducing starting current

Active Publication Date: 2021-06-04
广东华芯微特集成电路有限公司
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Problems solved by technology

However, in the process of realizing the present invention, the inventors found that the traditional start-up control method of position sensorless BLDCM still has the problem of low start-up efficiency

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  • Position sensorless bldcm closed-loop starting method, device and bldcm control equipment
  • Position sensorless bldcm closed-loop starting method, device and bldcm control equipment
  • Position sensorless bldcm closed-loop starting method, device and bldcm control equipment

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Embodiment Construction

[0043] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application. It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated with it, or there may be an intermediate element at the same time, that is, it may also be indirectly connected to another element .

[0044]Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purp...

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Abstract

The present application relates to a position sensorless BLDCM closed-loop starting method, device and BLDCM control equipment. The position sensorless BLDCM closed-loop startup method includes sequentially controlling the current loop PI regulator, observer PI regulator and speed loop PI regulator to enter the closed-loop working state according to the set execution cycle; according to the three-phase current detection results of the current loop PI regulator , to determine the current operating state of the position sensorless BLDCM under the set initial quadrature axis current; according to the current operating state of the position sensorless BLDCM and the set minimum electrical angle speed reference threshold, adjust through the current loop PI regulator and observer PI Controller and speed loop PI regulator closed-loop start sensorless BLDCM. During the entire start-up process of the position sensorless BLDCM, the control speed outer loop, current inner loop and speed / angle observer are all in a closed-loop working state, which effectively reduces the start-up current and shortens the start-up time, and achieves the purpose of effectively improving the start-up efficiency.

Description

technical field [0001] The present application relates to the technical field of electrical equipment, in particular to a closed-loop starting method and device for a position sensorless BLDCM and BLDCM control equipment. Background technique [0002] With the continuous development of electrical equipment technology, the application of position sensorless BLDCM (Brushless Direct Current Motor, brushless DC motor) has been very extensive. The start-up control technology of sensorless BLDCM plays an extremely important role in the practical application of sensorless BLDCM, and is the key technology that determines the success or failure of start-up of sensorless BLDCM. The traditional start-up control methods of position sensorless BLDCM mainly include open-loop start-up methods such as three-stage start-up method, frequency boost start-up method, and detection pulse rotor positioning start-up method. In recent years, quasi-closed-loop start-up methods and current closed-loop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/20H02P21/34H02P21/22H02P21/13H02P21/18H02P21/32
CPCH02P6/20H02P21/13H02P21/18H02P21/22H02P21/32H02P21/34
Inventor 张翔铭韩智毅
Owner 广东华芯微特集成电路有限公司
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