CN204707048U - A kind of fan driver without high-voltage electrolytic capacitor - Google Patents
A kind of fan driver without high-voltage electrolytic capacitor Download PDFInfo
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- CN204707048U CN204707048U CN201520432326.1U CN201520432326U CN204707048U CN 204707048 U CN204707048 U CN 204707048U CN 201520432326 U CN201520432326 U CN 201520432326U CN 204707048 U CN204707048 U CN 204707048U
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Abstract
The utility model provides a kind of fan driver without high-voltage electrolytic capacitor, comprises the filtering protected location be electrically connected successively, filter unit, rectification unit, smoothing reactor, filter capacitor and inversion unit; Described filtering protected location connects three-phase electricity input, and described inversion unit connects the brshless DC motor of output; Described filter capacitor is high-voltage large-capacity thin-film capacitor, and described filter capacitor one end connects the output of described smoothing reactor, other end ground connection.Fan driver without high-voltage electrolytic capacitor of the present utility model, has volume little, lightweight, high temperature resistant, and the long-life, the features such as high reliability, are applicable to work under bad environment, the occasion high to reliability requirement.
Description
Technical field
The utility model relates to blower fan technical field, relates to a kind of long-life fan driver without high-voltage electrolytic capacitor particularly.
Background technology
Traditional fan driver circuit board often uses electrochemical capacitor, use electrochemical capacitor, there is following shortcoming: 1. because of the technical reason of material, withstand voltage lower (the highest about the 500V) of high-voltage electrolytic capacitor so must use the mode of series connection electrolysis electric capacity to promote resistance to pressure in three-phase 380V, 440V or 480 ac rectifiers.2. high-voltage electrolytic capacitor is because of the electrochemical reaction of itself, there is equivalent conducting resistance and the large defect of equivalent inductance, so resistance to ripple voltage and ripple current ability little, in jumbo circuit, need many parallel connections, there is electrolyte because of electrochemical capacitor in the volume 3. of the driver increased further, easily dries up, so it is short to there is the life-span in high temperature environments, the not defect such as shelf-stable, General Life is at 2000-3000 hour, and the high life is 5000-6000 hour.
Summary of the invention
The utility model, for above-mentioned shortcoming of the prior art, provides a kind of small size, high resistance to pressure, long-life fan driver without high-voltage electrolytic capacitor.
In order to solve the problems of the technologies described above, the utility model have employed following technical scheme:
Without a fan driver for high-voltage electrolytic capacitor, comprise the filtering protected location be electrically connected successively, filter unit, rectification unit, smoothing reactor, filter capacitor and inversion unit; Described filtering protected location connects three-phase electricity input, and described inversion unit connects the brshless DC motor of output; Described filter capacitor is high-voltage large-capacity thin-film capacitor, and described filter capacitor one end connects the output of described smoothing reactor, other end ground connection.
Preferably; described filtering protected location comprises piezo-resistance RV1, RV2, RV3 and electric capacity C1, C2, C3; the two ends of described RV1 with C1 are connected first input end and second input of three-phase electricity input respectively; the two ends of described RV2 with C2 are connected the second input and the 3rd input of three-phase input respectively, and the two ends of described RV3 with C3 are connected first input end and the 3rd input of three-phase input respectively.
Preferably, described filter unit comprises inductance L 1, L2, L3, and described L1 connects the first input end of three-phase input, and L2 connects the second input of three-phase input, and L3 connects the 3rd input of three-phase input.
Preferably, described rectification unit is the three-phase bridge rectifier circuit be made up of diode D1, D2, D3, D4, D5, D6.
Preferably, described smoothing reactor is passive PFC smoothing reactor.
Preferably, described inversion unit is the three-phase inverter bridge circuit that six IGBT pipes T1, T2, T3, T4, T5, T6 are formed.
Preferably, also comprise current sampling resistor, one end ground connection of described sampling resistor, the other end connects the emitter of half-bridge IGBT pipe under described three-phase inverter bridge circuit.Further, described sampling resistor is current sampling resistor structure, gets two-phase simultaneously or gets three-phase current simultaneously.
Fan driver without high-voltage electrolytic capacitor of the present utility model, employs novel Large Copacity thin-film capacitor.Traditional electrochemical capacitor needs multiple series connection to improve resistance to pressure, and use a Large Copacity thin-film capacitor just can replace, and thin-film capacitor has better resistance to pressure, performance is more stable.Meanwhile, use thin-film capacitor without the need to the multiple ability promoting resistance to ripple voltage and ripple current of parallel connection, and then reduce the volume of driver, aesthetic appeal.In addition, thin-film capacitor, without electrolyte, easily stores, high temperature resistant, improves the useful life of driver, and there is not the phenomenon of electrolyte dry-out.
Fan driver without high-voltage electrolytic capacitor of the present utility model, comprises EMC filter unit, without the need to external filter, can cost-savingly install with simplifying; Meanwhile, have employed passive PFC smoothing reactor, improve power factor.
Fan driver without high-voltage electrolytic capacitor of the present utility model, has volume little, lightweight, high temperature resistant, and the long-life, the features such as high reliability, are applicable to work under bad environment, the occasion high to reliability requirement.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the fan driver embodiment without high-voltage electrolytic capacitor of the present utility model;
Fig. 2 is the circuit diagram of another embodiment of fan driver without high-voltage electrolytic capacitor of the present utility model; Description of reference numerals: 1-three-phase electricity input, 2-filtering protected location, 3-filter unit, 4-rectification unit, 5-smoothing reactor, 6-filter capacitor, 7-inversion unit, 8-brshless DC motor, 9-sampling resistor.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further details.
As shown in Figure 1, the fan driver without high-voltage electrolytic capacitor in the present embodiment, comprises the filtering protected location 2 be electrically connected successively, filter unit 3, rectification unit 4, smoothing reactor 5, filter capacitor 6 and inversion unit 7; Wherein, filtering protected location 2 connects three-phase electricity input 1, and inversion unit 7 connects the brshless DC motor 8 of output.
In order to improve the performance of driver, in the present embodiment, filter capacitor 6 is high-voltage large-capacity thin-film capacitor, and its one end connects the output of smoothing reactor 5, other end ground connection.The advantage of employing high-voltage large-capacity thin-film capacitor is: traditional electrochemical capacitor needs multiple series connection to improve resistance to pressure, and uses a Large Copacity thin-film capacitor just can replace, and thin-film capacitor has better resistance to pressure, and performance is more stable.Meanwhile, use thin-film capacitor without the need to the multiple ability promoting resistance to ripple voltage and ripple current of parallel connection, and then reduce the volume of driver, aesthetic appeal.In addition, thin-film capacitor, without electrolyte, easily stores, high temperature resistant, improves the useful life of driver, and there is not the phenomenon of electrolyte dry-out.
Preferably, in the present embodiment, filtering protected location 2 is made up of piezo-resistance RV1, RV2, RV3 and electric capacity C1, C2, C3.Wherein, the two ends of RV1 with C1 are connected first input end and second input of three-phase electricity input respectively, the two ends of RV2 with C2 are connected the second input and the 3rd input of three-phase input respectively, and the two ends of RV3 with C3 are connected first input end and the 3rd input of three-phase input respectively.
Preferably, in the present embodiment, filter unit 3 comprises inductance L 1, L2, L3, and wherein L1 connects the first input end of three-phase input, and L2 connects the second input of three-phase input, and L3 connects the 3rd input of three-phase input.
Preferably, in the present embodiment, rectification unit 4 is the three-phase bridge rectifier circuit be made up of diode D1, D2, D3, D4, D5, D6.
The EMC filtering that foregoing circuit is formed and rectification unit, without the need to external filter, saved cost and mounting process.
Preferably, in the present embodiment, smoothing reactor 5 is passive PFC smoothing reactor, improves the power factor of circuit.
Preferably, inversion unit 7 is the three-phase inverter bridge circuit be made up of six IGBT pipes T1, T2, T3, T4, T5, T6.Wherein, upper half-bridge circuit is formed by T1, T3, T5, lower half-bridge circuit is formed by T2, T4, T6, the tie point of the emitter of T1 and the collector electrode of T2 forms the first output, the tie point of the emitter of T3 and the collector electrode of T4 forms the second output, the tie point of the emitter of T5 and the collector electrode of T6 forms the 3rd output, connects the input of brshless DC motor 8 respectively.
As further improvement, the circuit in the present embodiment also comprises sampling resistor 9, and this sampling resistor is current sampling resistor Rcs, one end ground connection, the emitter of half-bridge IGBT pipe under other end connection three-phase inverter bridge circuit.Or as shown in Figure 2, sampling resistor is set to 3, connect the emitter of T2, T4, T6 and ground respectively.
The fan driver without high-voltage electrolytic capacitor in the present embodiment, has volume little, lightweight, high temperature resistant, and the long-life, the features such as high reliability, are applicable to work under bad environment, the occasion high to reliability requirement.
The explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection range of the utility model claim.
Claims (7)
1. without a fan driver for high-voltage electrolytic capacitor, it is characterized in that: comprise the filtering protected location (2) be electrically connected successively, filter unit (3), rectification unit (4), smoothing reactor (5), filter capacitor (6) and inversion unit (7); Described filtering protected location (2) connects three-phase electricity input (1), and described inversion unit (7) connects the brshless DC motor (8) of output; Described filter capacitor (6) is high-voltage large-capacity thin-film capacitor, and described filter capacitor (6) one end connects the output of described smoothing reactor (5), other end ground connection.
2. as claimed in claim 1 without the fan driver of high-voltage electrolytic capacitor; it is characterized in that: described filtering protected location (2) comprises piezo-resistance RV1, RV2, RV3 and electric capacity C1, C2, C3; the two ends of described RV1 with C1 are connected first input end and second input of three-phase electricity input (1) respectively; the two ends of described RV2 with C2 are connected the second input and the 3rd input of three-phase input respectively, and the two ends of described RV3 with C3 are connected first input end and the 3rd input of three-phase input respectively.
3. as claimed in claim 2 without the fan driver of high-voltage electrolytic capacitor, it is characterized in that: described filter unit (3) comprises inductance L 1, L2, L3, described L1 connects the first input end of three-phase input, L2 connects the second input of three-phase input, and L3 connects the 3rd input of three-phase input.
4., as claimed in claim 3 without the fan driver of high-voltage electrolytic capacitor, it is characterized in that: described rectification unit (4) is the three-phase bridge rectifier circuit be made up of diode D1, D2, D3, D4, D5, D6.
5., as claimed in claim 4 without the fan driver of high-voltage electrolytic capacitor, it is characterized in that: described smoothing reactor (5) is passive PFC smoothing reactor.
6. as claimed in claim 5 without the fan driver of high-voltage electrolytic capacitor, it is characterized in that: described inversion unit (7) is the three-phase inverter bridge circuit that six IGBT pipes T1, T2, T3, T4, T5, T6 are formed.
7. as claimed in claim 6 without the fan driver of high-voltage electrolytic capacitor, it is characterized in that: also comprise sampling resistor (9), one end ground connection of described sampling resistor, the other end connects the emitter of half-bridge IGBT pipe under described three-phase inverter bridge circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520432326.1U CN204707048U (en) | 2015-06-23 | 2015-06-23 | A kind of fan driver without high-voltage electrolytic capacitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520432326.1U CN204707048U (en) | 2015-06-23 | 2015-06-23 | A kind of fan driver without high-voltage electrolytic capacitor |
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| CN204707048U true CN204707048U (en) | 2015-10-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733294A (en) * | 2017-09-29 | 2018-02-23 | 温岭市三木机电有限公司 | A kind of integrated heat dissipation formula DC brushless motor controller and its processing method |
-
2015
- 2015-06-23 CN CN201520432326.1U patent/CN204707048U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733294A (en) * | 2017-09-29 | 2018-02-23 | 温岭市三木机电有限公司 | A kind of integrated heat dissipation formula DC brushless motor controller and its processing method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 317515 Central Industrial District, Chengnan Town, Wenling City, Taizhou, Zhejiang Patentee after: ZHEJIANG MINGZHEN ELECTRONICS CO.,LTD. Address before: 317515 Central Industrial District, Chengnan Town, Wenling City, Taizhou, Zhejiang Patentee before: WENLING SANMU MACHINE ELECTRICITY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230111 Address after: 317515 Central Industrial Site, Chengnan Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: Wenling Senda Electric Appliance Factory Address before: 317515 Central Industrial Zone of Chengnan Town, Wenling City, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG MINGZHEN ELECTRONICS CO.,LTD. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230719 Address after: 317515 Central Industrial Zone of Chengnan Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: ZHEJIANG MINGZHEN ELECTRONICS CO.,LTD. Address before: 317515 Central Industrial Site, Chengnan Town, Wenling City, Taizhou City, Zhejiang Province Patentee before: Wenling Senda Electric Appliance Factory |
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| TR01 | Transfer of patent right |