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Detection method of hall sensor device, permanent magnet motor and foc control angle

A Hall sensing, permanent magnet motor technology, applied in motor control, motor generator control, AC motor control, etc., can solve the problems of difficult installation, difficult accurate detection, poor electrical angle, etc.

Active Publication Date: 2021-12-21
POWERVISION TECH (SUZHOU) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult to achieve an accurate electrical angle difference between two linear Halls in mechanical installation, so there is great difficulty in installation
Due to the existence of installation errors, this method is difficult to achieve accurate detection of the rotor position of the motor in practical applications, and the installation is inconvenient

Method used

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  • Detection method of hall sensor device, permanent magnet motor and foc control angle
  • Detection method of hall sensor device, permanent magnet motor and foc control angle
  • Detection method of hall sensor device, permanent magnet motor and foc control angle

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Embodiment Construction

[0041] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0042] In order to realize the FOC control of the permanent magnet motor, the embodiment of the present application provides a Hall sensor device applied to the permanent magnet motor to realize accurate detection of the FOC control angle of the permanent magnet motor, thereby ensuring the FOC of the permanent magnet motor control accuracy.

[0043] see figure 1 , figure 1 It is a schematic structural diagram of a Hall sensor device 100 provided in an embodiment of the present application. The Hall sensing device 100 may include: a Hall plate 110 and a plurality of linear Hall sensors 120 .

[0044] In this embodiment, the Hall plate 110 may include opposite first surfaces and second surfaces, and the shape of the Hall plate 110 (that is, a magnetic field sensor made based on the Hall effect) is ...

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Abstract

The application provides a Hall sensor device, a permanent magnet motor and a method for detecting the FOC control angle. The Hall sensor device is used in a permanent magnet motor, including: a Hall plate, including a first surface and a second surface opposite to each other. ; The first linear Hall and the second linear Hall in the multiple linear Hall sensors are arranged on the first surface, the first linear Hall and the second linear Hall are located on the arc of the same circle, and the multiple linear Halls The third linear Hall and the fourth linear Hall in the Hall sensor are arranged on the second surface, and are respectively mirror-symmetrical to the first linear Hall and the second linear Hall with respect to the Hall plate. In this way, the linear Hall is arranged on the Hall plate, which is simple and convenient to install, and is conducive to calibrating the installation deviation, so as to ensure accurate detection of the rotor position of the permanent magnet motor.

Description

technical field [0001] The present application relates to the technical field of motors, in particular, to a Hall sensor device, a permanent magnet motor and a method for detecting FOC control angles. Background technique [0002] Based on the characteristics of the permanent magnet synchronous motor, it is suitable to be controlled by FOC (Field-Oriented Control, field-oriented control) technology. The accuracy of the rotor position and rotation direction of the motor is the key to accurately realize the FOC control of the motor. At present, the common way to determine the rotor position and rotation direction of the motor is to install a resolver on the rotor. However, the structure of the resolver is complex, and different motor shafts need to be equipped with different resolvers, which is difficult to install, and the detection of the rotor position also requires an expensive decoding chip, which is very expensive. [0003] Based on this, it is recorded in some patent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K11/215H02P21/18H02P25/022
CPCH02K11/215H02P21/18H02P25/022H02P2207/05
Inventor 不公告发明人
Owner POWERVISION TECH (SUZHOU) LTD
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