CN107154639A - High efficiency commutation inversion integration energy feedback frequency converter - Google Patents
High efficiency commutation inversion integration energy feedback frequency converter Download PDFInfo
- Publication number
- CN107154639A CN107154639A CN201610114360.3A CN201610114360A CN107154639A CN 107154639 A CN107154639 A CN 107154639A CN 201610114360 A CN201610114360 A CN 201610114360A CN 107154639 A CN107154639 A CN 107154639A
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- CN
- China
- Prior art keywords
- circuit
- frequency converter
- way switch
- high efficiency
- energy feedback
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The present invention relates to a kind of integrated energy feedback frequency converter of high efficiency commutation inversion, it includes front stage circuits and late-class circuit, described front stage circuits include wave filter, three-phase controlled rectifier, dc-link capacitance in parallel again of connecting two-by-two, power grid voltage detection circuit, direct current bus voltage detecting circuit, input current sensor, control circuit and three two-way switch, three described two-way switch one end are connected respectively to the midpoint of three bridge arms of controlled rectifier, and the other end is connected to the series connection point of dc-link capacitance；Described late-class circuit includes three-phase inverter and motor；Circuit of power factor correction, feedback inversion transformation generating function are integrated in a circuit by frequency converter of the present invention, realize commutation inversion integration, improve power factor, reduce hardware complexity, reduce system cost, reliability is improved, and efficiency of the circuit in rectification mode is enhanced.
Description
Technical field
The present invention relates to the energy feedback frequency converter of a kind of frequency converter, more particularly to reduction energy consumption.
Background technology
Variable-frequency control technique is important channel that is energy-saving, improving control performance, raising product yield and quality,
Proud application effect and significant economic benefit is achieved in the application.But, universal frequency converter cannot be directly used to needs
The governing system of quick starting and braking and frequent forward and backward, limits the application of universal frequency converter.And pass through energy feedback
Circuit is allowed to feed back in AC network, is a kind of the most frequently used solution, can improve the utilization rate of the energy, especially right
Braking or the long-term system transferred with potential energy loading high are frequently played, significant power savings can be produced.
Realize that the integrated energy that energy feedback technology is generally constituted using three-phase controlled rectifier is returned in the world at present
Current feed circuit, there is also rectification efficiency is not high or the shortcomings of device is complicated, cost is high, application is limited for this technology.
The content of the invention
In view of the deficienciess of the prior art, braked it is an object of the present invention to provide a kind of precision that can realize motor,
Improve motor dynamic property and energy-saving energy feedback frequency converter.
To achieve these goals, the present invention is to realize by the following technical solutions：A kind of high efficiency commutation inversion
Integrated energy feedback frequency converter, it includes front stage circuits and late-class circuit, and described front stage circuits include wave filter, three-phase can
Control rectifier, dc-link capacitance again in parallel of connecting two-by-two, power grid voltage detection circuit, direct current bus voltage detecting circuit,
Input current sensor, control circuit and three two-way switch, three described two-way switch one end are connected respectively to controllable whole
The midpoint of three bridge arms of device is flowed, the other end is connected to the series connection point of dc-link capacitance；Described late-class circuit includes three contraries
Become device and motor；When busbar voltage is less than setting value, the switching tube of three-phase controlled rectifier is turned off, its backward dioded and institute
State three two-way switch and constitute boost rectifier, carry out PFC, powered to late-class circuit；Set when busbar voltage is higher than
During definite value, three two-way switch are not turned on, and controlled rectifier is generated electricity with three-phase inverter pattern to power network feedback, carry out work(
Rate factor correcting.
Its alignment circuit of described motor is based on rotor field-oriented double-closed-loop control pattern.
Motor speed control circuit is included by speed regulator, current regulator, space vector pulse width adjuster SWPWM, inversion
Device and position sensing and detection circuit constitute speed ring, constitute electric current loop by current regulator, current sense and detection circuit, institute
The speed ring stated is master controller, and controlled motor rotating speed is consistent with given rotating speed；Electric current loop is submaster controller, controlled motor stator
Electric current.
Circuit of power factor correction, feedback inversion transformation generating function are integrated in a circuit by frequency converter of the present invention, are realized
Commutation inversion integration, improves power factor, reduces hardware complexity, reduce system cost, improve reliability,
And efficiency of the circuit in rectification mode is enhanced.
Brief description of the drawings
Fig. 1 is the integrated energy feedback device schematic diagram of high efficiency commutation inversion of the present invention；
Fig. 2 is motor speed control circuit vector controlled block diagram of the present invention.
Embodiment
The invention will be further described for shown embodiment below in conjunction with the accompanying drawings.
Such as Fig. 1, in the energy feedback system in the present invention, front stage circuits include wave filter, three-phase controlled rectifier, two-by-two
Series connection and then dc-link capacitance in parallel again, power grid voltage detection circuit, direct current bus voltage detecting circuit, input current are passed
Sensor, control circuit, in addition to three two-way switch.One end of three two-way switch is connected respectively to three bridges of controlled rectifier
The midpoint of arm, the other end is all connected to the series connection point of dc-link capacitance；Late-class circuit includes three-phase inverter and motor.Bus electricity
Force down when setting value, the switching tube of three-phase controlled rectifier is turned off, its anti-and diode and three two-way switch are constituted and risen
Rectifier is pressed, PFC is carried out, is powered to late-class circuit；When busbar voltage is higher than setting value, three two-way switch are not
Conducting, controlled rectifier is generated electricity with three-phase inverter pattern to power network feedback, carries out PFC, it is ensured that system is whole
Stream mode has high power factor and low harmonic wave, reaches the purpose of environmental protection.It is two-way when system is operated in rectification state
Switch is solely subjected to the bus voltage value of half, and the conduction loss of the two-way switch of low load voltage value is substantially reduced；In system compared with
Many diode participation work, switching loss, drive loss and the conduction loss of diode and the switching tube of equal-wattage grade
Compared to having obtained larger reduction.Therefore, the rectification efficiency of system is improved.
The present invention is integrated in circuit of power factor correction, feedback inversion transformation generating function in one circuit, realizes rectification
Inversion integration, improves power factor, reduces hardware complexity, reduce system cost, improve reliability, and make
Efficiency of the circuit in rectification mode is enhanced.
Fig. 2 is the motor speed control circuit based on vector controlled, and it has, and output torque is steady, startability is good, speed governing model
The advantages of enclosing width, it is adaptable to which control performance requires higher system.It is a kind of in figure based on rotor field-oriented two close cycles control
Scheme processed, by speed regulator, current regulator, space vector pulse width adjuster SWPWM, inverter and position sensing and detection
Circuit constitutes speed ring, constitutes electric current loop by current regulator, current sense and detection circuit, speed ring is master controller, control
Motor speed processed is consistent with given rotating speed；Electric current loop is submaster controller, controlled motor stator current.
The energy feedback frequency converter of the present invention realized using above-mentioned technical proposal, its particular technique parameter can reach as follows：
The energy feedback converter technology parameter of table one
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.
Claims (3)
1. the integrated energy feedback frequency converter of a kind of high efficiency commutation inversion, it is characterised in that it includes front stage circuits and rear class
Circuit, described front stage circuits include wave filter, three-phase controlled rectifier, connect two-by-two dc-link capacitance in parallel again, electricity
Net voltage detecting circuit, direct current bus voltage detecting circuit, input current sensor, control circuit and three two-way switch, institute
The three two-way switch one end stated are connected respectively to the midpoint of three bridge arms of controlled rectifier, and the other end is connected to dc bus electricity
The series connection point of appearance；Described late-class circuit includes three-phase inverter and motor；When busbar voltage is less than setting value, three-phase is controllable
The switching tube shut-off of rectifier, its backward dioded constitutes boost rectifier with three two-way switch, carries out power factor
Correction, powers to late-class circuit；When busbar voltage is higher than setting value, three two-way switch are not turned on, controlled rectifier
Generated electricity with three-phase inverter pattern to power network feedback, carry out PFC.
2. the integrated energy feedback frequency converter of high efficiency commutation inversion according to claim 1, it is characterised in that：Described
Its alignment circuit of motor is based on rotor field-oriented double-closed-loop control pattern.
3. the integrated energy feedback frequency converter of high efficiency commutation inversion according to claim 2, it is characterised in that：Motor is adjusted
Fast circuit include by speed regulator, current regulator, space vector pulse width adjuster SWPWM, inverter and position sensing and
Detect that circuit constitutes speed ring, electric current loop is constituted by current regulator, current sense and detection circuit, based on described speed ring
Controller, controlled motor rotating speed is consistent with given rotating speed；Electric current loop is submaster controller, controlled motor stator current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610114360.3A CN107154639A (en) | 2016-03-02 | 2016-03-02 | High efficiency commutation inversion integration energy feedback frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610114360.3A CN107154639A (en) | 2016-03-02 | 2016-03-02 | High efficiency commutation inversion integration energy feedback frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107154639A true CN107154639A (en) | 2017-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610114360.3A Pending CN107154639A (en) | 2016-03-02 | 2016-03-02 | High efficiency commutation inversion integration energy feedback frequency converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114362637A (en) * | 2021-12-27 | 2022-04-15 | 西华大学 | Electric drive frequency conversion system for mining rubber wheel shuttle car |
| CN115065230A (en) * | 2022-07-19 | 2022-09-16 | 哈尔滨工业大学 | Three-phase bridgeless SEPIC type PFC converter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024396A (en) * | 2014-04-29 | 2015-11-04 | 西工大常熟研究院有限公司 | Energy feedback frequency converter |
| CN205407284U (en) * | 2016-03-02 | 2016-07-27 | 西工大常熟研究院有限公司 | High efficiency rectifier and inverter integration energy repayment converter |
-
2016
- 2016-03-02 CN CN201610114360.3A patent/CN107154639A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024396A (en) * | 2014-04-29 | 2015-11-04 | 西工大常熟研究院有限公司 | Energy feedback frequency converter |
| CN205407284U (en) * | 2016-03-02 | 2016-07-27 | 西工大常熟研究院有限公司 | High efficiency rectifier and inverter integration energy repayment converter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114362637A (en) * | 2021-12-27 | 2022-04-15 | 西华大学 | Electric drive frequency conversion system for mining rubber wheel shuttle car |
| CN115065230A (en) * | 2022-07-19 | 2022-09-16 | 哈尔滨工业大学 | Three-phase bridgeless SEPIC type PFC converter |
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Application publication date: 20170912 |
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