CN206226266U - One kind enhancing protection module - Google Patents
One kind enhancing protection module Download PDFInfo
- Publication number
- CN206226266U CN206226266U CN201621305692.1U CN201621305692U CN206226266U CN 206226266 U CN206226266 U CN 206226266U CN 201621305692 U CN201621305692 U CN 201621305692U CN 206226266 U CN206226266 U CN 206226266U
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- Prior art keywords
- electric capacity
- frequency converter
- protection module
- resistance
- enhancing protection
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- Power Conversion In General (AREA)
Abstract
The utility model discloses one kind enhancing protection module; it is arranged in frequency converter box body; including three road electric capacity and resistance series circuit; capacitance terminal per series circuit all the way corresponds to three output ends connection of frequency converter output reactance device respectively; the resistance terminal of No. three series circuits is connected with each other; Y-connection is constituted, all of electric capacity may be contained within housing, and electric capacity two ends lead to hull outside by lead.The application scenario long for circuit, effectively enhances driving force of the frequency converter to motor.Effectively reduce inverter output terminal pulse spike voltage.Prevent the premature aging of transmission cable and motor coil and puncture, significantly extend electrical machinery life, improve motor reliability and uptime.
Description
Technical field
The utility model belongs to electric automatization field, and in particular to one kind enhancing protection module.
Background technology
In the prior art because frequency converter output voltage waveform is through the PWM waveform after ovennodulation, wherein containing abundant
Radio-frequency component, by behind the high-stage concussion loop that the parasitic parameter that output cord and motor are constituted is constituted, it may appear that very
Due to voltage spikes high, when this due to voltage spikes it is high to a certain extent after, a certain degree of damage will be caused to the insulation of motor.
In many scene applications, the distance between frequency converter and motor can be different, and some distance meetings are far, so,
Connecting line between frequency converter and motor can be very long, and line is too big, frequency converter can be caused low to the driving force of motor, it is impossible to band
Dynamic motor rotation.
The content of the invention
Technical problem to be solved in the utility model is：A kind of enhancing protection module is provided, is solved in the prior art
Due to the problem that the oversize frequency converter of circuit is inadequate to the driving force of motor and harmonic wave is impacted to motor.
The utility model uses following technical scheme to solve above-mentioned technical problem：
One kind enhancing protection module, is arranged in frequency converter box body, including three road electric capacity and resistance series circuit, per all the way
The capacitance terminal of series circuit corresponds to three output ends connection of frequency converter output reactance device, the resistance terminal of No. three series circuits respectively
It is connected with each other, constitutes Y-connection, all of electric capacity is may be contained within housing, and electric capacity two ends are led to outside housing by lead
Portion.
Three resistance are arranged on radiator.
Three resistance are arranged on the aluminium section bar of frequency converter box house.
Also include a fan in frequency converter box body, for resistive dissipation.
The specification of the electric capacity is 0.68 μ F/1200V ± 10 or 0.1 μ F/2000V ± 10, and the specification of resistance is 300W/70
Ω。
Compared with prior art, the utility model has the advantages that：
1st, the application scenario long for circuit, effectively enhances driving force of the frequency converter to motor.
2nd, inverter output terminal pulse spike voltage is effectively reduced.
3rd, prevent the premature aging of transmission cable and motor coil and puncture, significantly extend electrical machinery life, improving motor can
By property and uptime.
4th, motor electric leakage stream is effectively reduced.
5th, effectively reduce to nearby device or the interferencing propagation of circuit.
6th, low-frequency transduction anti-interference is improved, it is to avoid because power line interference trips.
Brief description of the drawings
Fig. 1 is that the utility model strengthens protection module application electrical schematic diagram.
Fig. 2 is the structure chart that the utility model strengthens protection module.
Wherein, being designated in figure：1- shells；2- inlet wires；3- outlets；4- mounting-positioning holes.
Specific embodiment
Structure of the present utility model and the course of work are described further below in conjunction with the accompanying drawings.
One kind enhancing protection module, is arranged in frequency converter box body, including three road electric capacity and resistance series circuit, per all the way
The capacitance terminal of series circuit corresponds to three output ends connection of frequency converter output reactance device, the resistance terminal of No. three series circuits respectively
It is connected with each other, constitutes Y-connection, all of electric capacity is may be contained within housing, and electric capacity two ends are led to outside housing by lead
Portion.
Specific embodiment,
As shown in figure 1, a kind of enhancing protection module, is arranged in frequency converter box body, the input of frequency converter has input
Reactor, output end has an output reactance device, the output end and motor connection of output reactance device, the output end of output reactance device with
Link enhancement protection module between motor, enhancing protection module includes three road electric capacity and resistance series circuit, per series electrical all the way
The capacitance terminal on road corresponds to three output ends connection of frequency converter output reactance device respectively, the capacitance terminal of No. three series circuits respectively with
2 pin of output reactance device output end, 4 pin, the connection of 6 pin, the resistance terminal of No. three series circuits are connected with each other, and constitute Y-connection,
All of electric capacity may be contained within housing, and electric capacity two ends lead to hull outside by lead.
As shown in Fig. 2 all of electric capacity may be contained within housing 1, electric capacity two ends lead to hull outside, three by lead
Individual electric capacity draws three inlet wires 2, three outlets 3 altogether.The mounting portion that housing 1 extends out with both sides, sets on mounting portion
Mounting-positioning holes 4 are put, after the mounting-positioning holes 4 are used for the housing fixation that will be assembled, wiring work is then completed, so can be square
Wiring, while the very little that takes up room, it is adaptable to the application in small space.
Because three caloric values of resistance are than larger, therefore, three resistance are arranged at hull outside, convenient radiating will
Resistance is arranged on radiator.
Three resistance of the embodiment are attached on the aluminium section bar of frequency converter box house, and are affixed on casing and are radiated.
For the effect further up to radiating, a fan of power 35W is also set up in frequency converter box body, more strengthened
To resistive dissipation and the radiating to component around.
The specification of the electric capacity is 0.68 μ F/1200V ± 10 or 0.1 μ F/2000V ± 10, and the specification of resistance is 300W/70
Ω。
The operation principle of the thyristor protector is as follows：
Enhancing protection module is primarily used to constitute a filter circuit of du/dt together with output reactance device, effectively disappears
Except the radio-frequency component in output voltage waveforms, the basic reason for producing due to voltage spikes, the effectively insulation of protection motor are eliminated.
The radio-frequency component in output voltage waveforms is solved, the basic reason for producing due to voltage spikes, effectively protection electricity is eliminated
Machine insulate.
The specific assembling process of this programme is as follows：
One kind enhancing protection module, part covers electric capacity, resistance and lead-out wire.Electric capacity and resistance string on one loop
Loop of allying the communists as three groups is in parallel, and a wire is respectively drawn in capacitance terminal.The electric capacity in this loop is placed on installation and interior use
Epoxy resin pours fixation, and make a call to three fairleads side by side in the one side of mounting box passes line from fairlead.Enhancing protection mould
Block is primarily used to constitute a filter circuit of du/dt together with output reactance device, effectively in elimination output voltage waveforms
Radio-frequency component, eliminates the basic reason for producing due to voltage spikes, the effectively insulation of protection motor.
According to example from the element structure of utility model product, rigging position, electrical principle be to illustrate this reality
Technical characterstic and design with novel product, main purpose are for the effective spy for understanding the utility model product more directly perceived
Property.
Claims (5)
1. a kind of enhancing protection module, is arranged in frequency converter box body, it is characterised in that：Including three road electric capacity and resistant series electricity
Road, the capacitance terminal per series circuit all the way corresponds to three output ends connection of frequency converter output reactance device, three tunnel series electricals respectively
The resistance terminal on road is connected with each other, and constitutes Y-connection, and all of electric capacity may be contained within housing, and electric capacity two ends are drawn by lead
To hull outside.
2. enhancing protection module according to claim 1, it is characterised in that：Three resistance are arranged on radiator.
3. enhancing protection module according to claim 2, it is characterised in that：Three resistance are arranged at frequency converter box house
Aluminium section bar on.
4. enhancing protection module according to claim 1, it is characterised in that：Also include a fan in frequency converter box body,
For to resistive dissipation.
5. enhancing protection module according to claim 1, it is characterised in that：The specification of the electric capacity is 0.68 μ F/1200V
± 10 or 0.1 μ F/2000V ± 10, the specification of resistance is 300W/70 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621305692.1U CN206226266U (en) | 2016-11-30 | 2016-11-30 | One kind enhancing protection module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621305692.1U CN206226266U (en) | 2016-11-30 | 2016-11-30 | One kind enhancing protection module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206226266U true CN206226266U (en) | 2017-06-06 |
Family
ID=58783779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621305692.1U Active CN206226266U (en) | 2016-11-30 | 2016-11-30 | One kind enhancing protection module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206226266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400952A (en) * | 2021-12-31 | 2022-04-26 | 青岛海尔空调电子有限公司 | Drive circuit and drive equipment for direct-current variable-frequency motor |
-
2016
- 2016-11-30 CN CN201621305692.1U patent/CN206226266U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400952A (en) * | 2021-12-31 | 2022-04-26 | 青岛海尔空调电子有限公司 | Drive circuit and drive equipment for direct-current variable-frequency motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Le Bin Inventor after: Feng Zhan Inventor after: Song Wenming Inventor before: Le Bin Inventor before: Feng Zhan Inventor before: Song Wenming Inventor before: Xu Lulu |