CN209088737U - A kind of over-pressure safety device of permanent magnet synchronous motor control failure - Google Patents
A kind of over-pressure safety device of permanent magnet synchronous motor control failure Download PDFInfo
- Publication number
- CN209088737U CN209088737U CN201821767763.9U CN201821767763U CN209088737U CN 209088737 U CN209088737 U CN 209088737U CN 201821767763 U CN201821767763 U CN 201821767763U CN 209088737 U CN209088737 U CN 209088737U
- Authority
- CN
- China
- Prior art keywords
- protective cover
- fixedly installed
- circuit board
- controller
- permanent magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of over-pressure safety devices of permanent magnet synchronous motor control failure, and it to further include circuit protection device that the utility model relates to over-pressure safety device fields, including motor and power supply line；Circuit protection device includes protective cover, and protective cover is fixedly mounted on the outer surface of motor, and power supply line is fixedly connected with protective cover, and the outer surface of protective cover is fixedly installed with regulating switch；The utility model passes through setting circuit protection device; setting varistor and fuse inside protective cover in circuit protection device, when external voltage is excessively high, varistor resistance value becomes rapidly very little; it is blown with the concatenated fuse of varistor, so that other circuits be protected not to be burned.
Description
Technical field
The utility model relates to over-pressure safety devices to set field, control more specifically to a kind of permanent magnet synchronous motor
The over-pressure safety device of failure.
Background technique
Since current permanent magnet synchronous motor more application three-phase pulse width modulated mode realizes sine-wave current control.Permanent magnetism is same
There is counter electromotive force generation when walking motor operation, and counter electromotive force is also higher at high speeds.When system breaks down, motor
Controller can close driving electric bridge, and permanent magnet synchronous motor is in generating state at this time, and permanent magnet synchronous motor will be to the mother of controller
Line feedback is to raise busbar voltage, after voltage reaches a certain level, if protection is not in time, will result in the serious of controller
Damage.Therefore the protective device for needing a kind of magneto circuit prevents overtension from damaging magneto.
Utility model content
The purpose of the utility model is to provide a kind of over-pressure safety devices of permanent magnet synchronous motor control failure, for protecting
The circuit of permanent magnet synchronous motor.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of over-pressure safety device of permanent magnet synchronous motor control failure, including motor and power supply line further include that circuit is protected
Protection unit；The circuit protection device includes protective cover, and the protective cover is fixedly mounted on the outer surface of motor, described
Power supply line be fixedly connected with protective cover, the outer surface of the protective cover is fixedly installed with regulating switch.
Preferably, the outer surface of the protective cover is provided with mounting groove, and the regulating switch is movably arranged on installation
In slot, it is fixedly installed with multistage gear in the mounting groove, indicator is fixedly installed in the regulating switch, it is described
Multistage indicator light is fixedly installed in the middle part of regulating switch, the multistage gear and multistage indicator light correspond, user
It can need to select different gears according to different.
Preferably, the inner right side of the protective cover is fixedly installed with controller, the inside left of the protective cover
It is fixedly installed with circuit board, is from left to right successively fixedly installed with filter capacitor and rectifier bridge on the upside of the circuit board, it is described
Circuit board on the downside of be from left to right successively fixedly installed with secondary commutation pipe and secondary filter capacitor, the controller and circuit
Being fixedly connected sequentially between plate has varistor and fuse, successively fixes from top to bottom between the controller and circuit board
Temp probe, choke coil and switch transformer are installed, the controller, varistor and fuse are successively electric with circuit board
Connection, respectively with circuit board electrical connection, the switch transformer is electrically connected with regulating switch for the temp probe and choke coil
It connects, each electronic component cooperative cooperating achievees the effect that protect circuit in protective cover.
Preferably, upper and lower surface is fixedly installed with shielded layer, the controller and circuit inside the protective cover
Plate is respectively positioned on the inside of shielded layer, and shielded layer can effectively shield extraneous electromagnetic interference.
Compared with prior art, the utility model provides a kind of overvoltage protection dress of permanent magnet synchronous motor control failure
Set, have it is following the utility model has the advantages that
(1) in the utility model, by the way that multistage gear is arranged, multistage gear is divided into three gears in the utility model；
Out of stock, high pressure shelves and low pressure shelves will light when indicator goes to different stalls to the multistage indicator light of gear,
When regulating switch is gone to it is out of stock when, directly disconnection power supply line and motor between connection, when regulating switch goes to high pressure shelves
When, controller passes sequentially through varistor and fuse and circuit board electrical connection, and circuit board passes sequentially through rectifier bridge and filter
Wave capacitor is electrically connected with motor, and the effect of rectifier bridge is 220V alternating current to be become direct current, then filter out direct current by filter capacitor
AC ripple in electricity keeps circuit work more reliable, and the temp probe being fixedly mounted in protective cover is for detecting protective cover
Internal temperature, when temperature is higher than a certain setting value, the voltage output of circuit board meeting tripping protection cover, to protect permanent-magnet synchronous
Motor is not damaged.
(2) in the utility model, by setting varistor and fuse, when external voltage is excessively high, varistor resistance
Value becomes very little rapidly, is blown with the concatenated fuse of varistor, to protect other circuits not to be burned, when multistage shelves
When position switches to low pressure shelves, switch transformer control enters the voltage on circuit board, the received voltage of permanent magnet synchronous motor
Smaller, the power of operation will also become smaller, and circuit board will convert into secondary commutation pipe at this time and secondary filter capacitor is electrically connected with motor
It connects, secondary commutation pipe can become low-voltage AC low-voltage DC, and secondary filter capacitor can filter out in low-voltage DC
Ripple；Interference in order to avoid circuit by electromagnetism, therefore add choke coil and shielded layer, shielded layer can first reduce it is extraneous into
Enter the electromagnetic quantities in protective cover, the major function of choke coil is to reduce electromagnetic interference, with the above arrangement, can be to permanent-magnet synchronous
Motor circuit plays a certain protective role.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the outside drawing of the utility model protective cover；
Fig. 3 is the enlarged drawing of the utility model regulating switch；
Fig. 4 is the structural schematic diagram inside the utility model protective cover；
Fig. 5 is the cross-sectional view of the utility model protective cover.
Figure label explanation:
1, motor；2, protective cover；3, regulating switch；4, power supply line；5, mounting groove；6, multistage gear；7, multistage indicator light；
8, indicator；9, controller；10, varistor；11, fuse；12, circuit board；13, rectifier bridge；14, filter capacitor；15, secondary
Grade rectifying tube；16, secondary filter capacitor；17, temp probe；18, choke coil；19, switch transformer；20, shielded layer.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model；The technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe；Obviously；Described embodiment is only the utility model a part of the embodiment；Rather than whole reality
Apply example.Based on the embodiments of the present invention；Those of ordinary skill in the art institute without making creative work
The every other embodiment obtained；It fall within the protection scope of the utility model.
Embodiment 1: Fig. 1-3, a kind of over-pressure safety device of permanent magnet synchronous motor control failure, including motor 1 are please referred to
It further include circuit protection device with power supply line 4；Circuit protection device includes protective cover 2, and protective cover 2 is fixedly mounted on motor 1
Outer surface, power supply line 4 is fixedly connected with protective cover 2, and the outer surface of protective cover 2 is fixedly installed with regulating switch 3.
The outer surface of protective cover 2 is provided with mounting groove 5, and regulating switch 3 is movably arranged in mounting groove 5, solid in mounting groove 5
Dingan County is equipped with multistage gear 6, is fixedly installed with indicator 8 in regulating switch 3, the middle part of regulating switch 3 is fixedly installed with multistage
Indicator light 7, multistage gear 6 are corresponded with multistage indicator light 7.
In the utility model, by the way that multistage gear 6 is arranged, multistage gear 6 is divided into three gears in the utility model；It is disconnected
Shelves, high pressure shelves and low pressure shelves will light when indicator 8 goes to different stalls to the multistage indicator light 7 of gear,
By operating above, the circuit in the utility model can be made to do multistage control processing.
Embodiment 2: please referring to Fig. 4-5, and the 1 different place in basis is that the inside of protective cover 2 is right in conjunction with the embodiments
Side is fixedly installed with controller 9, and the inside left of protective cover 2 is fixedly installed with circuit board 12, and 12 upside of circuit board is from left to right
It is successively fixedly installed with filter capacitor 14 and rectifier bridge 13,12 downside of circuit board is from left to right successively fixedly installed with secondary commutation
Pipe 15 and secondary filter capacitor 16, being fixedly connected sequentially between controller 9 and circuit board 12 has varistor 10 and fuse 11,
Temp probe 17, choke coil 18 and switch transformer 19 are successively fixedly installed between controller 9 and circuit board 12 from top to bottom,
Controller 9, varistor 10 and fuse 11 are successively electrically connected with circuit board 12, temp probe 17 and choke coil 18 respectively with electricity
Road plate 12 is electrically connected, and switch transformer 19 is electrically connected with regulating switch 3.
2 inside upper and lower surface of protective cover is fixedly installed with shielded layer 20, and controller 9 and circuit board 12 are respectively positioned on shielded layer
20 inside.
Company in the utility model, when regulating switch 3 goes to out of stock, directly between disconnection power supply line 4 and motor 1
It connects, when regulating switch 3 goes to high pressure shelves, controller 9 passes sequentially through varistor 10 and fuse 11 and circuit board 12
Electrical connection, circuit board 12 passes sequentially through rectifier bridge 13 and filter capacitor 14 is electrically connected with motor 1, and the effect of rectifier bridge 13 is friendship
Galvanic electricity becomes direct current, then filters out the AC ripple in direct current by filter capacitor 14, keeps circuit work more reliable, and protective cover
The temp probe 17 being fixedly mounted in 2 is used to detect the internal temperature of protective cover 2, when temperature is higher than a certain setting value, circuit
The voltage output of the meeting tripping protection cover 2 of plate 12, to protect motor 1 not damaged.In the utility model, by the way that pressure-sensitive electricity is arranged
Resistance 10 and fuse 11, when external voltage is excessively high, 10 resistance value of varistor becomes rapidly very little, concatenated with varistor 10
Fuse 11 is blown, so that other circuits be protected not to be burned, when multistage gear 6 switches to low pressure shelves, switch becomes
The control of depressor 19 enters the voltage on circuit board 12, and the received voltage of motor 1 is smaller, and the power of operation will also become smaller, electric at this time
Road plate 12 will convert into secondary commutation pipe 15 and secondary filter capacitor 16 is electrically connected with motor 1, and secondary commutation pipe 15 can be low
Pressure alternating current becomes low-voltage DC, and secondary filter capacitor 16 can filter out the ripple in low-voltage DC；In order to avoid circuit
By the interference of electromagnetism, therefore choke coil 18 and shielded layer 20 are added, shielded layer 20 can first reduce extraneous enter in protective cover 2
Electromagnetic quantities, the major function of choke coil 18 is to reduce electromagnetic interference, with the above arrangement, can play centainly to 1 circuit of motor
Protective effect.
It is described above；The only preferable specific embodiment of the utility model；But the protection scope of the utility model is not
It is confined to this；Anyone skilled in the art is within the technical scope disclosed by the utility model；It is practical according to this
Novel technical solution and its improvement design is subject to equivalent substitution or change；It should all cover in the protection scope of the utility model
It is interior.In addition, one word of " comprising " is not excluded for other elements or step, "one" word before the component is not excluded for including " multiple " be somebody's turn to do
Element.The multiple element stated in claim to a product can also be implemented through software or hardware by an element.First,
Second equal words are used to indicate names, and are not indicated any particular order.
Claims (3)
1. a kind of over-pressure safety device of permanent magnet synchronous motor control failure, including motor (1) and power supply line (4), feature exists
In: it further include circuit protection device；The circuit protection device includes protective cover (2), the fixed peace of the protective cover (2)
Mounted in the outer surface of motor (1), the power supply line (4) is fixedly connected with protective cover (2), the appearance of the protective cover (2)
Face is fixedly installed with regulating switch (3)；
The outer surface of the protective cover (2) is provided with mounting groove (5), and the regulating switch (3) is movably arranged on mounting groove
(5) it in, is fixedly installed with multistage gear (6) in the mounting groove (5), the regulating switch is fixedly installed with finger on (3)
Show needle (8), is fixedly installed in the middle part of the regulating switch (3) multistage indicator light (7), the multistage gear (6) and more
Grade indicator light (7) corresponds.
2. a kind of over-pressure safety device of permanent magnet synchronous motor control failure according to claim 1, it is characterised in that: institute
The inner right side for the protective cover (2) stated is fixedly installed with controller (9), and the inside left of the protective cover (2) is fixedly mounted
Have circuit board (12), is from left to right successively fixedly installed with filter capacitor (14) and rectifier bridge on the upside of the circuit board (12)
(13), secondary commutation pipe (15) and secondary filter capacitor are from left to right successively fixedly installed on the downside of the circuit board (12)
(16), being fixedly connected sequentially between the controller (9) and circuit board (12) has varistor (10) and fuse (11), institute
Successively be fixedly installed with from top to bottom between the controller (9) stated and circuit board (12) temp probe (17), choke coil (18) and
Switch transformer (19), the controller (9), varistor (10) and fuse (11) are successively electrically connected with circuit board (12)
It connects, the temp probe (17) and choke coil (18) are electrically connected with circuit board (12) respectively, the switch transformer (19)
It is electrically connected with regulating switch (3).
3. a kind of over-pressure safety device of permanent magnet synchronous motor control failure according to claim 2, it is characterised in that: institute
The internal upper and lower surface of the protective cover (2) stated is fixedly installed with shielded layer (20), and the controller (9) and circuit board (12) are equal
Positioned at the inside of shielded layer (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821767763.9U CN209088737U (en) | 2018-10-30 | 2018-10-30 | A kind of over-pressure safety device of permanent magnet synchronous motor control failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821767763.9U CN209088737U (en) | 2018-10-30 | 2018-10-30 | A kind of over-pressure safety device of permanent magnet synchronous motor control failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209088737U true CN209088737U (en) | 2019-07-09 |
Family
ID=67121509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821767763.9U Expired - Fee Related CN209088737U (en) | 2018-10-30 | 2018-10-30 | A kind of over-pressure safety device of permanent magnet synchronous motor control failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209088737U (en) |
-
2018
- 2018-10-30 CN CN201821767763.9U patent/CN209088737U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190709 Termination date: 20191030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |