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Online space vector state display device for monopole asynchronous motor

A space vector and state display technology, which is applied in the control of electromechanical transmission devices, measuring devices, motor generator control, etc., can solve the problem that the state of space vector cannot be displayed in real time, and achieve the effect of direct signal processing and simple structure.

Inactive Publication Date: 2014-03-26
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that the space vector state cannot be displayed in real time when the space vector driving method of the main circuit of the three-phase motor is used to control the single-phase asynchronous motor, and provides an online space vector state display for the single-phase asynchronous motor device

Method used

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  • Online space vector state display device for monopole asynchronous motor
  • Online space vector state display device for monopole asynchronous motor
  • Online space vector state display device for monopole asynchronous motor

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specific Embodiment approach 1

[0030] Specific implementation mode one: the following combination Figure 1 to Figure 8 Describe this embodiment, the online space vector state display device for single-phase asynchronous motor described in this embodiment, it includes A-phase voltage conversion circuit 1, B-phase voltage conversion circuit 2, microprocessor 3 and display 4,

[0031] The A-phase voltage conversion circuit 1 is used to collect the voltage signal of the A-phase winding, and the B-phase voltage conversion circuit 2 is used to collect the voltage signal of the B-phase winding.

[0032] The common-ground unipolar signal output end of the positive amplitude signal of the A-phase voltage conversion circuit 1 is connected to the first analog signal input end of the microprocessor 3, and the common-ground unipolar signal of the negative amplitude signal of the A-phase voltage conversion circuit 1 The output terminal is connected to the second analog signal input terminal of the microprocessor 3,

[...

specific Embodiment approach 2

[0040] Specific implementation mode two: the following combination figure 1 This embodiment is described. This embodiment is a further description of Embodiment 1. The A-phase voltage conversion circuit 1 and the B-phase voltage conversion circuit 2 have the same structure. The A-phase voltage conversion circuit 1 is used as an example to illustrate the structure of the voltage conversion circuit.

[0041] The A-phase voltage conversion circuit 1 is composed of a voltage divider circuit 1-1, a forward rectification circuit 1-2, a reverse rectification circuit 1-3, a first transformer 1-4 and a second transformer 1-5,

[0042] The voltage divider circuit 1-1 is used to divide and extract the voltage signal of the A-phase winding. The forward voltage signal output terminal of the voltage divider circuit 1-1 is connected to the input terminal of the forward rectifier circuit 1-2, and the forward rectifier circuit 1- The signal output terminal of 2 is connected to the voltage sign...

specific Embodiment approach 3

[0044] Specific implementation mode three: the following combination figure 1 Describe this embodiment, this embodiment is a further description of Embodiment 1 or 2, the microprocessor 3 is composed of four common ground A / D conversion units 3-1 and two positive and negative amplitude synthesis units 3-2 composition,

[0045] The analog signal input terminals of the four common ground A / D conversion units 3-1 are respectively the four analog signal input terminals of the microprocessor 3, wherein two common ground A / D conversion units 3-1 are respectively used to The positive and negative amplitude signals of the A-phase winding are converted into digital signals and output to a positive and negative amplitude synthesis unit 3-2. A positive and negative amplitude synthetic signal output terminal,

[0046] The other two common-ground A / D conversion units 3-1 are respectively used to convert the positive and negative amplitude signals of the B-phase winding into digital signa...

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Abstract

The invention discloses an online space vector state display device for a monopole asynchronous motor, belonging to the technical field of motor control. The online space vector state display device solves the problem of incapability of displaying a space vector state in real time when a space vector driving method of a three-phase motor main loop is adopted for controlling the monopole asynchronous motor. The online space vector state display device for the monopole asynchronous motor comprises an A phase voltage switching circuit, a B phase voltage switching circuit, a microprocessor and a display, wherein common ground unipolar signal output ends of a positive amplitude signal and a negative amplitude signal of the two phase voltage switching circuits are respectively connected with a first analog quantity signal input end, a second analog quantity signal input end, a third analog quantity signal input end and a fourth analog quantity signal input end of the microprocessor, the first positive and negative amplitude composite signal output end of the microprocessor is connected with the vertical coordinate signal input end of the display, and the second positive and negative amplitude composite signal output end of the microprocessor is connected with the horizontal ordinate input end of the display. The invention is suitable for online space vector state displaying of the monopole asynchronous motor.

Description

technical field [0001] The invention relates to an online space vector state display device for a single-phase asynchronous motor, belonging to the technical field of motor control. Background technique [0002] In the process of three-phase motor control, the space vector drive of the main circuit has become a mature technology. When the space vector driving method of the main circuit of the three-phase motor is applied to the control of the single-phase asynchronous motor, during the operation of the control, because the state of the space vector cannot be displayed in real time, the specific operating conditions cannot be obtained directly and control effects. Contents of the invention [0003] The present invention aims to solve the problem that the space vector state cannot be displayed in real time when the space vector driving method of the main circuit of the three-phase motor is used to control the single-phase asynchronous motor, and provides an online space vec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00G01R13/00
Inventor 王丁
Owner HEILONGJIANG UNIV
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