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Reversible dual power supply space vector inverter circuit and control method for single-phase asynchronous motor

A single-phase asynchronous, space vector technology, used in motor generator control, AC motor control, electronic commutation motor control, etc., can solve problems such as motor speed fluctuations

Inactive Publication Date: 2016-04-20
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the inverter power used by the single-phase induction motor causes the speed fluctuation of the motor, and provides a reversible dual-power space vector inverter circuit and a control method for the single-phase asynchronous motor

Method used

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  • Reversible dual power supply space vector inverter circuit and control method for single-phase asynchronous motor
  • Reversible dual power supply space vector inverter circuit and control method for single-phase asynchronous motor
  • Reversible dual power supply space vector inverter circuit and control method for single-phase asynchronous motor

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specific Embodiment approach 1

[0047] Specific implementation mode one: the following combination figure 2 and image 3 Describe this embodiment, the reversible dual power supply space vector inverter circuit for a single-phase asynchronous motor described in this embodiment, it includes a first DC power supply DC1, a second DC power supply DC2, a first switching tube S 1 , the second switch tube S 2 , the third switch tube S 3 , the fourth switch tube S 4 , the fifth switch tube S 5 , the sixth switch tube S 6 , the seventh switch tube S 7 and the eighth switching tube S 8 ,

[0048] The first switch tube S 1 , the second switch tube S 2 , the fifth switch tube S5 and the sixth switch tube S 6 is an NMOS transistor;

[0049] The third switch tube S 3 , the fourth switch tube S 4 , the seventh switch tube S 7 and the eighth switching tube S 8 is a PMOS transistor;

[0050] The anode of the first DC power supply DC1 is simultaneously connected to the first switching tube S 1 source and the ...

specific Embodiment approach 2

[0063] Specific implementation mode two: the following combination Figure 2 to Figure 7 This embodiment will be described. This embodiment will further describe Embodiment 1. Based on the control method for a reversible dual-power supply space vector inverter circuit for a single-phase asynchronous motor described in claim 1, the control circuit involved in this method is as follows: figure 2 As shown, it includes a single chip microcomputer, the first photocoupler O1, the second photocoupler O2, the third photocoupler O3, the fourth photocoupler O4, the fifth photocoupler O5, the sixth photocoupler O6, the first photocoupler Seven photocouplers O7 and eighth photocouplers O8,

[0064] The single-chip microcomputer P2.0 outputs the first switch tube S through the first photocoupler O1 1 Gate drive signal;

[0065] The single-chip microcomputer P2.1 outputs the second switch tube S through the second photocoupler O2 2 Gate drive signal;

[0066] The single-chip microcompu...

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Abstract

The invention discloses a reversible dual power space vector inverter circuit and control method for a single-phase asynchronous motor, and belongs to the technical field of power electronic application. The reversible dual power space vector inverter circuit solves the problem that an inverter power source adopted in a single-phase induction machine makes the speed of the motor fluctuate. The reversible dual power space vector inverter circuit comprises a direct current power source DC1, a direct current power source DC2 and eight switch tubes, wherein the S1, the S2, the S5 and the S6 are NMOS transistors, the S3, the S4, the S7 and the S8 are PMOS transistors, the positive electrode of the DC1 is connected with the source electrode of the S1 and the source electrode of the S2 at the same time, the negative electrode of the DC1 is connected with the source electrode of the S3 and the source electrode of the S4 at the same time, the positive electrode of the DC2 is connected with the source electrode of the S5 and the source electrode of the S6 at the same time, the negative electrode of the DC2 is connected with the source electrode of the S7 and the source electrode of the S8 at the same time, the common node of the drain electrode of the S1 and the drain electrode of the S3 is connected to one end of a main coil LQ, the common node of the drain electrode of the S6 and the drain electrode of the S8 is connected to one end of an auxiliary coil LD, and the common node of the drain electrode of the S2, the drain electrode of the S4, the drain electrode of the S5 and the drain electrode of the S7 is connected to the common connecting point of the main coil LQ and the auxiliary coil LD.

Description

technical field [0001] The invention relates to a reversible dual power supply space vector inverter circuit for a single-phase asynchronous motor, belonging to the technical field of power electronics applications. Background technique [0002] Two sets of stator coils of a single-phase asynchronous motor (main coil L Q and auxiliary coil L D ) are usually placed in an orthogonal manner, and the stator power supplied to the two coils should have a phase difference of 90 degrees to ensure the formation of a stator rotating magnetic field to make the rotor rotate. figure 1 is a schematic diagram of the model of a single-phase asynchronous motor, where the rotor windings are represented by α and β. ω is the angular velocity of the rotor. θ is the spatial displacement variable. [0003] There are two ways to generate the quadrature control voltage of the two coils: the first method is the auxiliary coil L D Some electrical components are connected in series with the main c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00H02P27/08H02P25/04
Inventor 王丁
Owner HEILONGJIANG UNIV