CN201956968U - Variable frequency speed regulator and variable frequency air conditioner - Google Patents
Variable frequency speed regulator and variable frequency air conditioner Download PDFInfo
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- CN201956968U CN201956968U CN2011200272648U CN201120027264U CN201956968U CN 201956968 U CN201956968 U CN 201956968U CN 2011200272648 U CN2011200272648 U CN 2011200272648U CN 201120027264 U CN201120027264 U CN 201120027264U CN 201956968 U CN201956968 U CN 201956968U
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- 238000012937 correction Methods 0.000 claims abstract description 37
- 230000001681 protective effect Effects 0.000 claims description 13
- 238000004378 air conditioning Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000003071 parasitic effect Effects 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 4
- 239000003990 capacitor Substances 0.000 description 7
- 238000011084 recovery Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000007600 charging Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 102100027206 CD2 antigen cytoplasmic tail-binding protein 2 Human genes 0.000 description 1
- 101100181929 Caenorhabditis elegans lin-3 gene Proteins 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 101000914505 Homo sapiens CD2 antigen cytoplasmic tail-binding protein 2 Proteins 0.000 description 1
- 101000922137 Homo sapiens Peripheral plasma membrane protein CASK Proteins 0.000 description 1
- 101000739160 Homo sapiens Secretoglobin family 3A member 1 Proteins 0.000 description 1
- 102100031166 Peripheral plasma membrane protein CASK Human genes 0.000 description 1
- 102100037268 Secretoglobin family 3A member 1 Human genes 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model provides a variable frequency speed regulator and variable frequency air conditioner. The variable-frequency speed regulator comprises a power factor correction circuit and an inverter circuit with an inverter, wherein the power factor correction circuit and the inverter circuit are integrated. The utility model discloses a variable frequency air conditioner is including foretell variable frequency speed regulator. Compared with the traditional discrete device scheme, the utility model has the advantages that the power device is highly integrated, the parasitic parameters on the wire are reduced, and the noise voltage is greatly reduced; all power devices are integrated on the same substrate in the module, so that the production efficiency is improved, and the reliability of the module is enhanced.
Description
Technical field
The utility model relates to field of air conditioning, particularly, relates to a kind of variable-frequency governor and transducer air conditioning.
Background technology
At present, extensively adopted the ac-dc-ac inverter drive scheme in the domestic variable frequency air-conditioning, owing to adopted traditional uncontrollable rectification, it is big that air conditioner exchanges the input side harmonic content, causes the electrical network serious pollution; Product certification has strict technical requirement to harmonic current; The performance of dc voltage de-stabilising effect air-conditioning product.
For solving this type of problem, increasing power factor correction in the DC side prime is current industry way widely.Mostly be to adopt discrete insulated gate bipolar transistor IGBT+fast recovery diode+Intelligent Power Module to realize the prime power factor correction in the present air-conditioning product, back level inversion constitutes whole frequency conversion speed-adjusting system.Fig. 1 and Fig. 2 illustrate the frequency control scheme that has power factor emendation function that comparatively ripe at present employing discrete device is realized, referring to Fig. 1 and Fig. 2, there is certain problem in the more power device of this scheme in production and assembling process: the unified and device orientation problem as the power device setting height(from bottom), in order to guarantee that setting height(from bottom) need adopt special fixed high frock, has a strong impact on production efficiency in the operating process; Secondly can not mate fully as if setting height(from bottom), each power device radiating surface will be or not same plane, the device pin stress deformation is caused in the mounting screw location, and module heat dissipating can be had a strong impact on simultaneously, and the bad possibility of device failure that causes of the pin of distortion and heat radiation increases; In addition because the influence of the restriction of device outline packages and electrical equipment case structure causes cabling lengthening between the power device pin, long cabling increases stray inductance, the electric capacity on the circuit, the current signal that changes makes the bigger noise voltage of generation on the circuit at a high speed, the spike of noise voltage is had higher requirement to the withstand voltage of device, this noise voltage also is bigger interference source simultaneously, be diffused in the entire controller circuit, the antijamming capability of control system needs further to strengthen.
In the prior art, big for above-mentioned noise voltage, the assembling complicated problems does not propose effective solution at present as yet.
The utility model content
The purpose of this utility model is to propose a kind of variable-frequency governor and transducer air conditioning, is used for solving big, the assembling complicated problems of noise voltage that prior art exists.
According to an aspect of the present utility model, a kind of variable-frequency governor is provided, by the following technical solutions:
Variable-frequency governor comprises circuit of power factor correction and has the inverter circuit of inverter that described circuit of power factor correction is mutually integrated with described inverter circuit.
Further, described variable-frequency governor also comprises: drive and protective circuit, comprise drive circuit, wherein, described drive circuit comprises power factor correction driver circuit and inverter driving circuit; Wherein, described power factor correction driver circuit is connected in the driving resistor in the described circuit of power factor correction, and described inverter driving circuit is connected in the driving resistor in the described inverter circuit.
Further, described driving and protective circuit also comprise: circuit overcurrent protection connects and described circuit of power factor correction and described inverter circuit; And the temperature overload protecting circuit, comprising the temperature protection output, described temperature overload protecting circuit connects described temperature protection output by thermistor.
Further, described protective circuit comprises following any one or a plurality of port: fault-signal output and enable port; Power factor correction overcurrent protection input port; And inverter overcurrent protection input port.
Further, described drive circuit has inverter driving signal input part and power factor correction driving signal input.
Further, described inverter driving signal input part comprises: go up brachium pontis drive signal end and following brachium pontis drive signal end.
According to another aspect of the present utility model, a kind of transducer air conditioning is provided, this transducer air conditioning comprises described variable-frequency governor.
Compared with prior art, the beneficial effects of the utility model are: compare with traditional discrete device scheme, the power device height is integrated, has reduced the parasitic parameter on the lead, and noise voltage also reduces greatly; Each power device is integrated on the interior same substrate of module, has improved production efficiency, and has strengthened the reliability of module.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the frequency conversion speed-adjusting system structural representation according to the described discrete device of the utility model background technology;
Fig. 2 is the structure chart that the part with variable-frequency governor among Fig. 1 specifically illustrates;
Fig. 3 is according to the inner main circuit figure of the variable-frequency governor of the utility model embodiment;
Fig. 4 is the concrete internal circuit diagram according to the variable-frequency governor of the utility model embodiment;
Fig. 5 is the module map according to the variable-frequency governor of the utility model Fig. 4 embodiment; And
Fig. 6 is the concrete internal module figure according to the driving of the utility model embodiment and protective circuit.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 3 is the primary structure figure according to the variable-frequency governor of the utility model embodiment, referring to shown in Figure 3, variable-frequency governor 201 comprises circuit of power factor correction 2011 and has the inverter circuit 2012 of inverter (not shown) that circuit of power factor correction 2011 and inverter circuit 2012 are integrated on the module.This circuit of power factor correction 2011 and inverter circuit 2012 are integrated on the module compared with traditional discrete device scheme, and the power device height is integrated, and the area of the shared printed circuit board of device reduces greatly, has reduced the cost of printed board; Distance is shorter between the power device, has reduced the conductor length between the device pin, has reduced the parasitic parameter on the lead, and noise voltage also reduces greatly; Each power device is integrated on the interior same substrate of module, through after the epoxy encapsulation, directly module is fixed on the radiator in the production process, greatly reduce module installing and locating difficulty, improved production efficiency, and module and radiator are fitted closely, help module heat dissipating, have strengthened the reliability of module.
Preferably; propose a kind of integrated circuit (IC) design scheme at such scheme, power factor correction (PFC) part and inversion module part highly are integrated into a new power model and design the inversion part and partly driving of power factor correction, overcurrent protection and fault-signal output.Fig. 4 is the concrete internal circuit diagram according to the variable-frequency governor of the utility model embodiment, is made up of circuit of power factor correction 2011, inverter circuit 2012, driving and protective circuit 2013.Power factor correction (PFC) drive signal and inversion drive signal by main control chip through over-sampling, calculate, various guard signals by the simulation protective circuit finish.
Preferably, power factor correction (PFC) circuit 2011 is made up of insulated gate bipolar transistor, two fast recovery diodes and driving resistor.
Preferably, inverter circuit is made up of six insulated gate bipolar transistors, six fast recovery diodes and driving resistor.
Preferably, drive circuit is made up of PFC driving, inverter driving circuit
Preferably, protective circuit is made up of PFC overcurrent, inverter overcurrent and temperature overload protecting circuit.
Specifically referring to shown in Fig. 4-5, variable-frequency governor is made up of three parts:
Circuit of power factor correction part (S1) comprising: insulated gate bipolar transistor Q7, fast recovery diode D7 and D8, gate driving resistance R 7;
Inverter circuit (S2) comprising: insulated gate bipolar transistor Q1, Q2, Q3, Q4, Q5, Q6, fast recovery diode D1, D2, D3, D4, D5, D6, gate driving resistance R 1, R2, R3, R4, R5, R6, inverter output end U (13), V (9), W (5), low side emitter output VRU (22), VRV (21), VRW (20);
Drive part (S3) comprising: inverter six tunnel drive signals: HIN1 (23), HIN2 (24), HIN3 (25), LIN1 (26), LIN2 (27), LIN3 (28), power factor correction drive signal PFC-in (29), high-end floating power supply end VB1 (12), VB2 (8), VB3 (9), bootstrap capacitor C4, C5, C6; Protective circuit partly comprises inverter overcurrent protection input ITRIP (32), power factor correction (PFC) overcurrent protection input PFCTRIP (31), fault output and Enable Pin
(30); Low side power supply and ground VCC (34), VSS (35); Temperature protection output TH.
Among Fig. 4, each pin definitions is as follows:
Above-mentionedly circuit of power factor correction 2011 and inverter circuit 2012 be integrated in an advantage on the module be:
Low-voltage is blocked output; The brownout of driving power device is very disadvantageous to the work of module, low-voltage is blocked and is guaranteed that by a voltage hysteresis loop comparator is set module low side power supply and high-end floating power supply are operated under the desired voltage, normally export greater than the higher limit Va module drive signal of voltage hysteresis loop comparator as VCC or VBS voltage, if VCC or VBS voltage block all drive signals less than the lower limit Vb module of voltage hysteresis loop comparator.
Anti-straight-through logical circuit; Straight-through for two power devices about preventing the same brachium pontis of inverter, cause module short circuit, the built-in anti-straight-through logical circuit of module, when the upper and lower bridge arm input signal is effective simultaneously, the drive signal of lockout module inside.
Inner integrated bootstrap diode; The novel intelligent power model is integrated in inside modules with the bootstrap diode of inverter high-side driver, has reduced the module peripheral wiring, makes hardware designs simpler, reliable.
Inverter and power factor correction overcurrent protection; Module-external can be built current detection circuit and be detected inverter and power factor correction electric current, testing circuit is converted into voltage signal Vx1 and Vx2 with current signal, and with these two signals the ITRIP pin and the PFCTRIP pin of access module respectively, in case in service electric current to occur excessive, Vx1 is greater than the threshold voltage of ITRIP pin or the Vx2 threshold voltage greater than the PFCITRIP pin, and inside modules is blocked each road drive signal and passed through
Pin sends fault-signal to main control chip.
Fault-signal output; The fault-signal output pin is an open-drain, the controlled MOSFET of grid, and when module breaks down when main control chip is reported to the police, inside modules driven MOS FET grid, drain pin voltage drag down the purpose that reaches fault-signal output with this.Referring to Fig. 4, driving and protective circuit module are provided with VS1, VS2 and VS3 three-phase bootstrapping signal.
Electrification reset and built-in persistent fault are removed time-delay; Electrify restoration circuit is made up of R9, C3, and power supply VCC is by 3 chargings of 9 pairs of capacitor C of resistance R when powering on, and module is blocked each road drive signal when voltage is lower than threshold value Vc on the capacitor C 3, and module is lifted a blockade when voltage is higher than threshold value Vc on the capacitor C 3.When inside modules breaks down, module is blocked each road drive signal and is passed through
When main control chip is reported to the police, voltage on the capacitor C 3 is forced to bleed off, after the fault clearance, C3 continues charging by R9, module is lifted a blockade when voltage is higher than threshold value Vc on the capacitor C 3, the charging interval of capacitor C 3 is fault clearance time-delay, can set the effective width of fault-signal and is convenient to main control chip identification by designing this time-delay.
Built-in temperature detects resistance, carries out excess temperature, overload protection; Inside modules is built-in NTC thermistor; by inserting the temperature that pull-up circuit comes the inner wafer of detection module in the module outside; voltage on the high more thermistor of module temperature is low more, can effectively carry out excess temperature and overload protection by temperature detection, improves the reliability of module.
The design of arranging of inside modules power device and control circuit has directly influenced the temperature characterisitic of module and the reliability of module, circuit of power factor correction is operated in higher switching frequency because of it, bigger du/dt that produces in the power device work and di/dt are the major sources of noise always, and the length of cabling directly influences the degree of noise between the power device pin.
Specifically referring to shown in Figure 6, Fig. 6 is the concrete internal module figure according to the driving of the utility model embodiment and protective circuit, driving and protective circuit specifically comprise drive circuit, circuit overcurrent protection and temperature overload protecting circuit, wherein, the external-connected port of circuit overcurrent protection, fault-signal output and enable port; Power factor correction overcurrent protection input port; And inverter overcurrent protection input port difference joint detection device, be used for circuit of power factor correction and inverter circuit are detected; The temperature overload protecting circuit detects foregoing circuit by thermistor.
Therefore as can be seen, compare with traditional discrete device scheme, the power device height is integrated, has reduced the parasitic parameter on the lead, and noise voltage also reduces greatly; Each power device is integrated on the interior same substrate of module, has improved production efficiency, and has strengthened the reliability of module.
According to another aspect of the present utility model, a kind of transducer air conditioning is provided, comprise above-mentioned variable-frequency governor 201.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (7)
1. a variable-frequency governor comprises circuit of power factor correction and the inverter circuit that has inverter, it is characterized in that described circuit of power factor correction is mutually integrated with described inverter circuit.
2. variable-frequency governor according to claim 1 is characterized in that, also comprises:
Drive and protective circuit, comprise drive circuit, wherein, described drive circuit comprises power factor correction driver circuit and inverter driving circuit;
Wherein, described power factor correction driver circuit is connected in the driving resistor in the described circuit of power factor correction, and described inverter driving circuit is connected in the driving resistor in the described inverter circuit.
3. variable-frequency governor according to claim 2 is characterized in that, described driving and protective circuit also comprise:
Circuit overcurrent protection connects and described circuit of power factor correction and described inverter circuit; And
The temperature overload protecting circuit comprises the temperature protection output, and described temperature overload protecting circuit connects described temperature protection output by thermistor.
4. variable-frequency governor according to claim 3 is characterized in that, described circuit overcurrent protection comprises following any one or a plurality of port:
Fault-signal output and enable port;
Power factor correction overcurrent protection input port; And
Inverter overcurrent protection input port.
5. variable-frequency governor according to claim 2 is characterized in that, described drive circuit has inverter and drives signal input part and power factor correction driving signal input.
6. variable-frequency governor according to claim 5 is characterized in that, described inverter drives signal input part and comprises: go up brachium pontis drive signal end and following brachium pontis drive signal end.
7. a transducer air conditioning is characterized in that, comprising: aforesaid right requires each described variable-frequency governor in 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200272648U CN201956968U (en) | 2011-01-26 | 2011-01-26 | Variable frequency speed regulator and variable frequency air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200272648U CN201956968U (en) | 2011-01-26 | 2011-01-26 | Variable frequency speed regulator and variable frequency air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201956968U true CN201956968U (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200272648U Ceased CN201956968U (en) | 2011-01-26 | 2011-01-26 | Variable frequency speed regulator and variable frequency air conditioner |
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| Country | Link |
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| CN (1) | CN201956968U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624203A (en) * | 2011-01-26 | 2012-08-01 | 珠海格力电器股份有限公司 | Variable frequency speed regulator and variable frequency air conditioner |
| CN102801352A (en) * | 2012-09-07 | 2012-11-28 | 珠海格力电器股份有限公司 | Power conversion module and variable frequency air conditioner |
| CN103516228A (en) * | 2012-06-18 | 2014-01-15 | 珠海格力电器股份有限公司 | Power conversion module of frequency conversion air conditioner |
| CN103532368A (en) * | 2012-07-05 | 2014-01-22 | 珠海格力电器股份有限公司 | Intelligent power module |
| CN109888982A (en) * | 2019-03-18 | 2019-06-14 | 中国重汽集团大同齿轮有限公司 | Slide variable speed electric motors, particularly |
| CN111726052A (en) * | 2019-03-20 | 2020-09-29 | 广东美的制冷设备有限公司 | Drive control circuit and air conditioner |
-
2011
- 2011-01-26 CN CN2011200272648U patent/CN201956968U/en not_active Ceased
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624203A (en) * | 2011-01-26 | 2012-08-01 | 珠海格力电器股份有限公司 | Variable frequency speed regulator and variable frequency air conditioner |
| CN103516228A (en) * | 2012-06-18 | 2014-01-15 | 珠海格力电器股份有限公司 | Power conversion module of frequency conversion air conditioner |
| CN103516228B (en) * | 2012-06-18 | 2016-10-05 | 珠海格力电器股份有限公司 | Power conversion module of frequency conversion air conditioner |
| CN103532368A (en) * | 2012-07-05 | 2014-01-22 | 珠海格力电器股份有限公司 | Intelligent power module |
| CN102801352A (en) * | 2012-09-07 | 2012-11-28 | 珠海格力电器股份有限公司 | Power conversion module and variable frequency air conditioner |
| CN109888982A (en) * | 2019-03-18 | 2019-06-14 | 中国重汽集团大同齿轮有限公司 | Slide variable speed electric motors, particularly |
| CN111726052A (en) * | 2019-03-20 | 2020-09-29 | 广东美的制冷设备有限公司 | Drive control circuit and air conditioner |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20130308 Decision number of declaring invalidation: 20157 Granted publication date: 20110831 |