CN205545048U - Three -phase AC permanent magnetism reluctance synchronizing high speed motor switching circuit - Google Patents
Three -phase AC permanent magnetism reluctance synchronizing high speed motor switching circuit Download PDFInfo
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- CN205545048U CN205545048U CN201620299681.0U CN201620299681U CN205545048U CN 205545048 U CN205545048 U CN 205545048U CN 201620299681 U CN201620299681 U CN 201620299681U CN 205545048 U CN205545048 U CN 205545048U
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Abstract
The utility model discloses a three -phase AC permanent magnetism reluctance synchronizing high speed motor switching circuit, including three -phase converter circuit, AC motor, winding switching circuit, the input and the DC power supply of three -phase converter circuit are connected, AC motor includes a three -phase winding and the 2nd three -phase winding, and a three -phase winding is connected with the 2nd three -phase winding through middle terminal, AC motor's input terminal and three -phase converter circuit connection, the winding switching circuit includes first three -phase diode bridge and second three -phase diode bridge, and first three -phase diode bridge and second three -phase diode bridge control by the transistor, and first three -phase diode bridge and second three -phase diode bridge's input is connected with AC motor's middle terminal and output terminal respectively, first three -phase diode bridge and second three -phase diode bridge's output is connected to DC power supply through the voltage stabilization module. The utility model discloses the slow -speed of revolution, big moment of torsion can be realized, the regional and speed governing scope of motor high efficiency is improved greatly.
Description
Technical field
This utility model belongs to circuit for controlling motor field, particularly relates to a kind of Thee-phase alternating current permanent-magnetic Reluctance synchronous high-speed electric expreess locomotive control switching circuit.
Background technology
Motor is a kind of calutron converting electrical energy into mechanical energy, its main effect is to produce driving torque, for providing power source for various machinerys, being generally divided into direct current generator, alternating current generator, wherein alternating current generator is also divided into load motor and three phase alternating current motor.In existing motor, general can be designed a kind of rotating speed, high speed or low speed, but in the mechanical processing process of reality, generally require use to various rotating speeds, in this case, then need to combine multiple the motors with a kind of rotating speed, make the bulky of whole system, cost is high, and need to increase extra switching circuit and realize switching, switching precision is low, and efficiency is low, thus be accomplished by one and be capable of high-speed electric expreess locomotive control switching circuit, so that whole motor has a relatively wide speed adjustable range.
Utility model content
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of Thee-phase alternating current permanent-magnetic Reluctance synchronous high-speed electric expreess locomotive control switching circuit, its simple in construction, low cost, make simple, switching efficiency is high, it is possible to realizes the slow-speed of revolution, high pulling torque, is greatly improved motor high efficiency region and speed adjustable range.
This utility model adopts the following technical scheme that
A kind of Thee-phase alternating current permanent-magnetic Reluctance synchronous high-speed electric expreess locomotive control switching circuit, including three phase converter circuit, alternating current generator, winding switching circuit；The input of described three phase converter circuit is connected with DC source；Described alternating current generator includes the first three-phase windings and the second three-phase windings, first three-phase windings is connected by intermediate terminal and the second three-phase windings, alternating current generator also includes input terminal and lead-out terminal, and input terminal is connected with three outfans of three phase converter circuit respectively；Described winding switching circuit includes the first three-phase diode bridge and second three-phase diode bridge of parallel connection, first three-phase diode bridge and the second three-phase diode bridge are controlled switch by the first transistor and transistor seconds respectively, and three inputs of the first three-phase diode bridge are connected with the intermediate terminal of alternating current generator respectively；Three inputs of the second three-phase diode bridge are connected with the lead-out terminal of alternating current generator respectively, and the DC output end of the first three-phase diode bridge and the second three-phase diode bridge is all connected to DC source by voltage stabilization module.
As further improvement of the utility model, the threephase switch bridge that described three phase converter circuit is made up of 6 audions is constituted, and the equal reverse parallel connection in two ends of each audion has damper diode.
As further improvement of the utility model, described voltage stabilization module includes the first resistance, the second resistance and the first electric capacity, described one end of first resistance is connected with the positive pole of DC source, one end of the other end and the first electric capacity connects, the other end of the first electric capacity and one end of the second resistance connect, and the other end of the second resistance is connected with the negative pole of DC source；The DC output end of the first electric capacity and the first three-phase diode bridge and the second three-phase diode bridge is in parallel.
The beneficial effects of the utility model:
Thee-phase alternating current permanent-magnetic Reluctance synchronous high-speed electric expreess locomotive control switching circuit of the present utility model, its simple in construction, low cost, make simple, switching efficiency is high, it is possible to realizes the slow-speed of revolution, high pulling torque, is greatly improved motor high efficiency region and speed adjustable range.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of embodiment of this utility model.
Fig. 2 is the motor height rotating speed operation characteristic figure of a kind of embodiment of this utility model.
Fig. 3 is the motor low speed high torque operation characteristic of a kind of embodiment of this utility model.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
As it is shown in figure 1, a kind of Thee-phase alternating current permanent-magnetic Reluctance synchronous high-speed electric expreess locomotive control switching circuit, including three phase converter circuit 1, alternating current generator 2, winding switching circuit 3；The input of described three phase converter circuit 1 is connected with DC source；Described alternating current generator 2 includes the first three-phase windings 201 and the second three-phase windings 202, first three-phase windings 201 is connected by intermediate terminal and the second three-phase windings 202, alternating current generator 2 also includes input terminal and lead-out terminal, and input terminal is connected with three outfans of three phase converter circuit 1 respectively；Described winding switching circuit 3 includes the first three-phase diode bridge 301(D1 ~ D6 of parallel connection) and the second three-phase diode bridge 302(D7 ~ D12), first three-phase diode bridge 301 and the second three-phase diode bridge 302 are controlled switch by the first transistor SW1 and transistor seconds SW2 respectively, and three inputs of the first three-phase diode bridge 301 intermediate terminal with alternating current generator 2 respectively is connected；Three inputs of the second three-phase diode bridge 302 lead-out terminal with alternating current generator 2 respectively is connected, and the DC output end of the first three-phase diode bridge 301 and the second three-phase diode bridge 302 is all connected to DC source by voltage stabilization module 4.
In this utility model, in order to avoid audion is breakdown, improving safety in utilization of the present utility model and stability, the threephase switch bridge that described three phase converter circuit 1 is made up of 6 audions (IGBT1 ~ IGBT6) is constituted, and the equal reverse parallel connection in two ends of each audion has damper diode.
Described voltage stabilization module 4 includes the first resistance R1, the second resistance R2 and the first electric capacity C1, one end of described first resistance R1 is connected with the positive pole of DC source, one end of the other end and the first electric capacity C1 connects, the other end of the first electric capacity C1 and one end of the second resistance R2 connect, and the other end of the second resistance R2 is connected with the negative pole of DC source；The DC output end of the first electric capacity C1 and the first three-phase diode bridge 301 and the second three-phase diode bridge 302 is in parallel；Electrically connect with voltage stabilization module owing to the outfan of the first three-phase diode bridge 301 and the second three-phase diode bridge 302 is unified, thus effectively simplify circuit, save components and parts cost.
In sum, operation principle of the present utility model is: when transistor SW1 be closed, transistor SW2 be in opening time, the first three-phase windings 201 and the second three-phase windings 202 in alternating current generator all start, the impedance of the most whole circuit is big, thus in low frequency region, it also is able to obtain bigger torque, is specifically shown in Fig. 2；When transistor SW1 be in opening, transistor SW2 be closed time, in alternating current generator, only the first three-phase windings 201 is activated, thus the impedance of whole circuit is little, also has enough electric currents in high-frequency region, is suitable for running up, and is specifically shown in Fig. 3；Thee-phase alternating current permanent-magnetic Reluctance synchronous high-speed electric expreess locomotive control switching circuit the most of the present utility model can selectively switch on SW1 or SW2 according to practical situation, it is achieved thereby that expand speed control range.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description, principle of the present utility model is simply described; on the premise of without departing from this utility model spirit and scope; this utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (3)
1. a Thee-phase alternating current permanent-magnetic Reluctance synchronous high-speed electric expreess locomotive control switching circuit, it is characterised in that: include three phase converter circuit (1), alternating current generator (2), winding switching circuit (3)；The input of described three phase converter circuit (1) is connected with DC source；Described alternating current generator (2) includes the first three-phase windings (201) and the second three-phase windings (202), first three-phase windings (201) is connected by intermediate terminal and the second three-phase windings (202), alternating current generator (2) also includes input terminal and lead-out terminal, and input terminal is connected with three outfans of three phase converter circuit (1) respectively；Described winding switching circuit (3) includes the first three-phase diode bridge (301) and second three-phase diode bridge (302) of parallel connection, first three-phase diode bridge (301) and the second three-phase diode bridge (302) are controlled switch by the first transistor (SW1) and transistor seconds (SW2) respectively, and three inputs of the first three-phase diode bridge (301) intermediate terminal with alternating current generator (2) respectively is connected；Three inputs of the second three-phase diode bridge (302) lead-out terminal with alternating current generator (2) respectively is connected, and the DC output end of the first three-phase diode bridge (301) and the second three-phase diode bridge (302) is all connected to DC source by voltage stabilization module (4).
Thee-phase alternating current permanent-magnetic Reluctance synchronous high-speed electric expreess locomotive control switching circuit the most according to claim 1, it is characterized in that: the threephase switch bridge that described three phase converter circuit (1) is made up of 6 audions is constituted, the equal reverse parallel connection in two ends of each audion has damper diode.
Thee-phase alternating current permanent-magnetic Reluctance synchronous high-speed electric expreess locomotive control switching circuit the most according to claim 1, it is characterized in that: described voltage stabilization module (4) includes the first resistance, the second resistance and the first electric capacity, described one end of first resistance is connected with the positive pole of DC source, one end of the other end and the first electric capacity connects, the other end of the first electric capacity and one end of the second resistance connect, and the other end of the second resistance is connected with the negative pole of DC source；The DC output end of the first electric capacity and the first three-phase diode bridge (301) and the second three-phase diode bridge (302) is in parallel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620299681.0U CN205545048U (en) | 2016-04-12 | 2016-04-12 | Three -phase AC permanent magnetism reluctance synchronizing high speed motor switching circuit |
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| CN201620299681.0U CN205545048U (en) | 2016-04-12 | 2016-04-12 | Three -phase AC permanent magnetism reluctance synchronizing high speed motor switching circuit |
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| CN205545048U true CN205545048U (en) | 2016-08-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411218A (en) * | 2016-04-12 | 2017-02-15 | 江苏东航空机械有限公司 | Three-phase AC permanent magnet reluctance synchronous high-speed motor switching circuit |
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2016
- 2016-04-12 CN CN201620299681.0U patent/CN205545048U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411218A (en) * | 2016-04-12 | 2017-02-15 | 江苏东航空机械有限公司 | Three-phase AC permanent magnet reluctance synchronous high-speed motor switching circuit |
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