CN102315636A - Lightning protection circuit for direct current motor and main power supply circuit - Google Patents
Lightning protection circuit for direct current motor and main power supply circuit Download PDFInfo
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- CN102315636A CN102315636A CN201110246743A CN201110246743A CN102315636A CN 102315636 A CN102315636 A CN 102315636A CN 201110246743 A CN201110246743 A CN 201110246743A CN 201110246743 A CN201110246743 A CN 201110246743A CN 102315636 A CN102315636 A CN 102315636A
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- surge absorber
- circuit
- surge
- series arm
- electric capacity
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Abstract
The invention discloses a lightning protection circuit for a direct current motor, which comprises a first surge absorber, a second surge absorber and a third surge absorber, wherein the second surge absorber is connected with the third surge absorber in series and then is connected with the first surge absorber in parallel; the input end of a parallel circuit is connected with an alternating current power supply; and the output end of the parallel circuit is connected with the input end of the power supply circuit of a motor. The lightning protection circuit has a lightning protection function and strong anti-jamming capability. The invention also discloses a main power supply circuit based on the lightning protection circuit.
Description
Technical field
The invention belongs to machine field, particularly a kind of lightning prevention circuit that is used for dc brushless motor is applicable in the various supply air systems.
Background technology
In actual life; The interference of thunder and lightning is very big to the mankind's life harm, and it not only damages trees, forest, house and building, also electronic and electrical equipment is caused very big infringement and destruction; And the interference of irresistible thunderbolt at all of existing direct current machine and control loop; Be easy to damaged, not only influence is produced and life, and equipment maintenance cost is high.
In order to overcome aforesaid drawbacks, method in common is to rely on some external connection electrical apparatus equipment at present, but can increase the equipment use cost like this, haves much room for improvement.
Summary of the invention
Main purpose of the present invention is to provide a kind of lightning prevention circuit and main power circuit that is used for direct current machine, and it can resist thunderbolt, and antijamming capability is strong.
The present invention is for solving above technical problem, and the technical scheme that is adopted is:
A kind of lightning prevention circuit that is used for direct current machine; Comprise first, second and third surge absorber, wherein, parallelly connected with first surge absorber again after second and third surge absorber is in series; The input of said parallel circuits connects AC power, and output connects the input in motor power loop.
A kind of main power circuit based on aforementioned lightning prevention circuit; Comprise first, second and third grade reduction voltage circuit and the rectification circuit that connect successively; Wherein, first order reduction voltage circuit comprises first, second and third surge absorber and first, second and third electric capacity, and first and second surge absorber is connected each other and constituted first series arm; First and second electric capacity is connected each other and is constituted second series arm, and aforementioned first and second series arm, the 3rd electric capacity, the 3rd surge absorber are parallel with one another; Second level reduction voltage circuit comprises the first transformation coil and fourth, fifth, six surge absorbers; Wherein, Fourth, fifth surge absorber is connected each other and is constituted the 3rd series arm, and the described first transformation coil, the 3rd series arm and the 6th surge absorber be parallel connection successively; Third level reduction voltage circuit comprises the second transformation coil, the 7th, eight, nine surge absorbers and the 4th electric capacity; Wherein, Seven, eight surge absorbers are connected each other and are constituted the 4th series arm, and the second transformation coil, the 4th series arm, the 4th electric capacity and the 9th surge absorber be parallel connection successively; The output of said third level reduction voltage circuit connects the input of rectification circuit.
After adopting such scheme, the present invention not only can resist the thunderbolt of 6KV, can also pass through electrostatic discharge testing, electromagnetic compatibility test and dielectric voltage withstand test etc.
Description of drawings
Fig. 1 is a basic circuit diagram of the present invention;
Fig. 2 is a kind of particular circuit configurations figure of the present invention.
Embodiment
Below will combine accompanying drawing, technical scheme of the present invention will be elaborated.
As shown in Figure 1, the present invention provides a kind of lightning prevention circuit that is used for direct current machine, comprises first, second and third surge absorber; Wherein, second and third surge absorber is connected each other, forms series arm; First surge absorber is parallelly connected with aforementioned series arm; Form parallel circuits, the input of said parallel circuits connects AC power, and output connects the input in motor power loop; Like this; When ac power input end got into, first, second and third surge absorber utilized its good non-line characteristic, through-current capacity is big, the residual voltage level is low, action is fast and do not have characteristics such as afterflow as the thunder and lightning interference signal, and protection rear end electronic product is avoided being struck by lightning and brought out the influence of the surging that is produced.
Please refer to shown in Figure 2ly again,, also on the circuit structure basis of aforementioned surge absorber, increase other electronic device in order further to improve the voltage that bears of the present invention; Be configured for the main power circuit of direct current machine; Specifically, described main power circuit comprises first, second and third grade reduction voltage circuit and the rectification circuit that connects successively, wherein; First order reduction voltage circuit comprises first, second and third surge absorber and first, second and third electric capacity; First and second surge absorber is connected each other, and first and second electric capacity is connected each other, and aforementioned two series arms, the 3rd electric capacity, the 3rd surge absorber are parallel with one another; Second level reduction voltage circuit comprises the first transformation coil and fourth, fifth, six surge absorbers; Wherein, Fourth, fifth surge absorber is connected each other, the parallel connection successively of series arm that the described first transformation coil, fourth, fifth surge absorber constitute and the 6th surge absorber; Third level reduction voltage circuit comprises the second transformation coil, the 7th, eight, nine surge absorbers and the 4th electric capacity; Wherein, Seven, eight surge absorbers are connected each other, series arm, the 4th electric capacity and the 9th surge absorber that the second transformation coil, the 7th, eight surge absorbers constitute parallel connection successively; The output of said third level reduction voltage circuit connects the input of rectification circuit.
During work; When the thunder and lightning interference signal of 6KV when ac power input end inserts; Three grades of reduction voltage circuits in the main power circuit of the present invention cooperatively interact; Suppress the thunderbolt interference signal gradually, make the interference signal that is added to rectification circuit input end in safe range, do not influence the operate as normal of direct current machine.
When the electrostatic interference signal when ac power input end inserts; Surge absorber in the main power circuit of the present invention utilizes avalanche theory; Play the effect of shunting pressure limiting with the reaction speed of P level second, thereby protect load not to be destroyed, do not influence the operate as normal of direct current machine.
When the electromagnetic interference signal of the electromagnetic interference signal of outside or direct current machine itself when ac power input end inserts; Electric capacity in the main power circuit and loop construction are used to suppress interference signal; Make the outside unlikely operate as normal that influences direct current machine of interference signal, and the interference signal that direct current machine itself produces can not have influence on load.
In addition, surge absorber in the main power circuit of the present invention and capacitor element can be played the effect of insulation again, satisfy the dielectric strength of direct current machine, guarantee personal safety.
Above embodiment is merely explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought that proposes according to the present invention, and any change of on the technical scheme basis, being done all falls within the protection range of the present invention.
Claims (2)
1. lightning prevention circuit that is used for direct current machine; It is characterized in that: comprise first, second and third surge absorber; Wherein, Parallelly connected with first surge absorber again after second and third surge absorber is in series, the input of said parallel circuits connects AC power, and output connects the input in motor power loop.
2. main power circuit based on aforementioned lightning prevention circuit; It is characterized in that: comprise first, second and third grade reduction voltage circuit and the rectification circuit that connect successively; Wherein, first order reduction voltage circuit comprises first, second and third surge absorber and first, second and third electric capacity, and first and second surge absorber is connected each other and constituted first series arm; First and second electric capacity is connected each other and is constituted second series arm, and aforementioned first and second series arm, the 3rd electric capacity, the 3rd surge absorber are parallel with one another; Second level reduction voltage circuit comprises the first transformation coil and fourth, fifth, six surge absorbers; Wherein, Fourth, fifth surge absorber is connected each other and is constituted the 3rd series arm, and the described first transformation coil, the 3rd series arm and the 6th surge absorber be parallel connection successively; Third level reduction voltage circuit comprises the second transformation coil, the 7th, eight, nine surge absorbers and the 4th electric capacity; Wherein, Seven, eight surge absorbers are connected each other and are constituted the 4th series arm, and the second transformation coil, the 4th series arm, the 4th electric capacity and the 9th surge absorber be parallel connection successively; The output of said third level reduction voltage circuit connects the input of rectification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110246743A CN102315636A (en) | 2011-08-26 | 2011-08-26 | Lightning protection circuit for direct current motor and main power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110246743A CN102315636A (en) | 2011-08-26 | 2011-08-26 | Lightning protection circuit for direct current motor and main power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102315636A true CN102315636A (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110246743A Pending CN102315636A (en) | 2011-08-26 | 2011-08-26 | Lightning protection circuit for direct current motor and main power supply circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN102315636A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701109A (en) * | 2013-12-31 | 2014-04-02 | 上海欣丰电子有限公司 | Direct-current power supply lightning protection box circuit |
| CN104518711A (en) * | 2013-09-30 | 2015-04-15 | 贵州航天电子科技有限公司 | Coding technology based stepless speed regulating circuit of motor |
| CN105391042A (en) * | 2015-11-03 | 2016-03-09 | 丹阳奇烨科技有限公司 | Novel anti-lightning surge power adapter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001197679A (en) * | 2000-01-07 | 2001-07-19 | Nippon Telegraph & Telephone East Corp | Uninterruptible power supply with lighting protecting function |
| CN201523230U (en) * | 2009-11-20 | 2010-07-07 | 浪潮电子信息产业股份有限公司 | Two-phase electric power supply lightning protection device |
| CN201636674U (en) * | 2009-06-10 | 2010-11-17 | 黄爱国 | Lightning protection led street lamp |
| CN201700047U (en) * | 2010-04-02 | 2011-01-05 | 上海古森实业有限公司 | Led lamp driving circuit |
| CN202221890U (en) * | 2011-08-26 | 2012-05-16 | 江苏上骐集团有限公司 | Lightening proof circuit used for DC motor and main power source return circuit |
-
2011
- 2011-08-26 CN CN201110246743A patent/CN102315636A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001197679A (en) * | 2000-01-07 | 2001-07-19 | Nippon Telegraph & Telephone East Corp | Uninterruptible power supply with lighting protecting function |
| CN201636674U (en) * | 2009-06-10 | 2010-11-17 | 黄爱国 | Lightning protection led street lamp |
| CN201523230U (en) * | 2009-11-20 | 2010-07-07 | 浪潮电子信息产业股份有限公司 | Two-phase electric power supply lightning protection device |
| CN201700047U (en) * | 2010-04-02 | 2011-01-05 | 上海古森实业有限公司 | Led lamp driving circuit |
| CN202221890U (en) * | 2011-08-26 | 2012-05-16 | 江苏上骐集团有限公司 | Lightening proof circuit used for DC motor and main power source return circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518711A (en) * | 2013-09-30 | 2015-04-15 | 贵州航天电子科技有限公司 | Coding technology based stepless speed regulating circuit of motor |
| CN103701109A (en) * | 2013-12-31 | 2014-04-02 | 上海欣丰电子有限公司 | Direct-current power supply lightning protection box circuit |
| CN103701109B (en) * | 2013-12-31 | 2016-06-29 | 上海欣丰电子有限公司 | A kind of DC source lightning protection box circuit |
| CN105391042A (en) * | 2015-11-03 | 2016-03-09 | 丹阳奇烨科技有限公司 | Novel anti-lightning surge power adapter |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120111 |