CN205304616U - Take electric current source converter of current compensation - Google Patents
Take electric current source converter of current compensation Download PDFInfo
- Publication number
- CN205304616U CN205304616U CN201521092328.7U CN201521092328U CN205304616U CN 205304616 U CN205304616 U CN 205304616U CN 201521092328 U CN201521092328 U CN 201521092328U CN 205304616 U CN205304616 U CN 205304616U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model provides a take electric current source converter of current compensation, the three -phase AC power supply of first branch road is through three -phase thyristor rectifier circuit, smoothing reactor connects first dc -to -ac converter, the first output branch road of first dc -to -ac converter connects the A looks of motor, second output branch road connects the B looks of motor, third output branch road connects the C looks of motor, wherein, at first output branch road, first commutation electric capacity is connected respectively to second output branch road and third output branch road, second commutation electric capacity and third commutation electric capacity to same common point, the three -phase AC power supply of second branch road connects the second dc -to -ac converter through three -phase diode rectifier circuit, filter capacitance, and a first output branch road warp filter inductor of second dc -to -ac converter connects the A looks of motor, and the 2nd filter inductor on the second output branch road warp connects the B looks of motor, and third output branch road connects the C looks of motor through the 3rd filter inductor. The utility model discloses can carry out the current compensation to electric current source converter, improve the response speed of motor, it influences the motor to reduce harmonic current simultaneously.
Description
Technical field
This utility model belongs to electric and electronic technical field, specifically, relate to the current source converter that a kind of belt current compensates, be that current source converter output electric current is compensated by one, the response speed of motor can be improved, suppress the converter that motor is affected by harmonic current simultaneously.
Background technology
Along with country to energy-conservation attention and encouragement, converter is used widely in the industrial production, and especially in high performance occasion, such as electrical equipments such as SERVO CONTROL, crane, lathes, converter obtains with its energy-conservation advantage and promotes rapidly and application. converter is divided into voltage source (VSI) converter and current source (CSI) converter. in high-power occasion, switching frequency raising can cause very big switch power loss, causes that converter efficiency declines, works in low frequency in hgher efficiency based on the current source converter of Thyristor Controlled rectification. in addition, it is higher that current source converter has safety, easily realize overcurrent protection, reliable, facilitate the features such as four quadrant running, and from production cost, the thyristor device of high-power is less costly, but there is structure complexity, response is relatively slow and output current wave harmonic wave is too high, voltage source frequency converter circuit structure based on diode rectifier circuit and IGBT inverter circuit is simple, response is quickly, switching frequency is high, it is easily achieved various pulse width modulation (PWM) control program, the output electric current of current source converter can be compensated.
Summary of the invention
The purpose of this utility model is to provide the current source converter that a kind of belt current compensates, and it can realize output current of frequency converter and compensate, it is possible to quick response produces to compensate electric current and injects motor, thus suppressing to flow the harmonic current impact on motor.
The current source converter that a kind of belt current that this utility model provides compensates, the three-phase alternating-current supply of the first branch road connects the first inverter through three-phase thyristor rectification circuit, smoothing reactor, first output branch road of the first inverter connects the A phase of motor, second output branch road connects the B phase of motor, 3rd output branch road connects the C phase of motor, wherein, export branch road, the second output branch road and the 3rd output branch road first and connect the first commutation capacitor, the second commutation capacitor and the 3rd commutation capacitor extremely same common point respectively;The three-phase alternating-current supply of the second branch road connects the second inverter through three-phase diode rectification circuit, filter capacitor, first output branch road of the second inverter connects the A phase of motor through the first filter inductance, second output branch road connects the B phase of motor through the second filter inductance, and the 3rd output branch road connects the C phase of motor through the 3rd filter inductance.
In above-mentioned, three-phase thyristor rectification circuit is the three-phase bridge scr rectification circuit being made up of 6 IGCTs.
In above-mentioned, the first inverter is the three-phase bridge type converter being made up of 6 switching tubes, and on each switching tube, reverse parallel connection has a diode.
In above-mentioned, three-phase diode rectification circuit is the three-phase bridge diode rectifier circuit being made up of 6 diodes.
In above-mentioned, the second inverter is the three-phase bridge type converter being made up of 6 switching tubes, and on each switching tube, reverse parallel connection has a diode.
This utility model structure is simple and clear, and functions is obvious, and current source converter can be carried out current compensation by new structure, improves the response speed of motor, and reduce harmonic current affects motor simultaneously.
Accompanying drawing explanation
Fig. 1 is circuit structure diagram of the present utility model.
Detailed description of the invention
With reference to Fig. 1, the current source converter that a kind of belt current that this utility model provides compensates, the three-phase alternating-current supply of the first branch road is through three-phase thyristor rectification circuit, smoothing reactor L connects the first inverter, first output branch road of the first inverter connects the A phase of motor M, second output branch road connects the B phase of motor M, 3rd output branch road connects the C phase of motor M, branch road is exported first, second output branch road and the 3rd output branch road connect the first commutation capacitor C1 respectively, second commutation capacitor C2 and the three commutation capacitor C3 is same common point extremely, wherein, three-phase thyristor rectification circuit is the three-phase bridge scr rectification circuit being made up of 6 IGCT V1��V6, first inverter is the three-phase bridge type converter being made up of 6 switching tube Sc1��Sc6, on each switching tube, reverse parallel connection has a diode, the three-phase alternating-current supply of the second branch road is through three-phase diode rectification circuit, filter capacitor C4 connects the second inverter, first output branch road of the second inverter connects the A phase of motor M through the first filter inductance La, second output branch road connects the B phase of motor M through the second filter inductance Lb, 3rd output branch road connects the C phase of motor M through the 3rd filter inductance Lc, three-phase diode rectification circuit is the three-phase bridge diode rectifier circuit being made up of 6 diode D1��D6, second inverter is the three-phase bridge type converter being made up of 6 switching tube Sv1��Sv6, on each switching tube, reverse parallel connection has a diode. wherein, the model of switching tube Sc1��Sc6 and switching tube Sv1��Sv6 is K50T60.
During use, the first alternating current power supply is input power, through three-phase thyristor rectification circuit, then through smoothing reactor, produces constant bus current, enters the first inverter, commutation capacitor, finally enter motor. Meanwhile, the second alternating current power supply, through three-phase diode rectification circuit and capacitor filtering, produce constant voltage source, can quickly produce to compensate electric current, after filtering inductance by the second inverter, enter motor.
So, the alternating current produced by the first inverter, the second inverter respectively converges at motor, it is possible to obtain complete sine wave, response speed is faster simultaneously, current source converter is exported electric current and carries out frequency analysis by this mode, then produces to compensate electric current, reaches to compensate the purpose of electric current.
Claims (5)
1. the current source converter that a belt current compensates, it is characterized in that, the three-phase alternating-current supply of the first branch road connects the first inverter through three-phase thyristor rectification circuit, smoothing reactor, first output branch road of the first inverter connects the A phase of motor, second output branch road connects the B phase of motor, 3rd output branch road connects the C phase of motor, wherein, export branch road, the second output branch road and the 3rd output branch road first and connect the first commutation capacitor, the second commutation capacitor and the 3rd commutation capacitor extremely same common point respectively;The three-phase alternating-current supply of the second branch road connects the second inverter through three-phase diode rectification circuit, filter capacitor, first output branch road of the second inverter connects the A phase of motor through the first filter inductance, second output branch road connects the B phase of motor through the second filter inductance, and the 3rd output branch road connects the C phase of motor through the 3rd filter inductance.
2. the current source converter that a kind of belt current according to claim 1 compensates, it is characterised in that three-phase thyristor rectification circuit is the three-phase bridge scr rectification circuit being made up of 6 IGCTs.
3. the current source converter that a kind of belt current according to claim 1 compensates, it is characterised in that the first inverter is the three-phase bridge type converter being made up of 6 switching tubes, and reverse parallel connection has a diode on each switching tube.
4. the current source converter that a kind of belt current according to claim 1 compensates, it is characterised in that three-phase diode rectification circuit is the three-phase bridge diode rectifier circuit being made up of 6 diodes.
5. the current source converter that a kind of belt current according to claim 1 compensates, it is characterised in that the second inverter is the three-phase bridge type converter being made up of 6 switching tubes, and reverse parallel connection has a diode on each switching tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521092328.7U CN205304616U (en) | 2015-12-25 | 2015-12-25 | Take electric current source converter of current compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521092328.7U CN205304616U (en) | 2015-12-25 | 2015-12-25 | Take electric current source converter of current compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205304616U true CN205304616U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521092328.7U Expired - Fee Related CN205304616U (en) | 2015-12-25 | 2015-12-25 | Take electric current source converter of current compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205304616U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936321A (en) * | 2017-05-19 | 2017-07-07 | 四川都睿感控科技有限公司 | Constant-current source |
-
2015
- 2015-12-25 CN CN201521092328.7U patent/CN205304616U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936321A (en) * | 2017-05-19 | 2017-07-07 | 四川都睿感控科技有限公司 | Constant-current source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20161225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |