CN205407284U - High efficiency rectifier and inverter integration energy repayment converter - Google Patents
High efficiency rectifier and inverter integration energy repayment converter Download PDFInfo
- Publication number
- CN205407284U CN205407284U CN201620155053.5U CN201620155053U CN205407284U CN 205407284 U CN205407284 U CN 205407284U CN 201620155053 U CN201620155053 U CN 201620155053U CN 205407284 U CN205407284 U CN 205407284U
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- circuit
- controlled rectifier
- high efficiency
- rectifier
- inverter
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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
Abstract
The utility model relates to a high efficiency rectifier and inverter integration energy repayment converter, it includes preceding stage circuit and back level circuit, the preceding stage circuit include wave filter, three -phase controlled rectifier, two liang of series connection parallelly connected direct current BUS capacitors, grid voltage detection circuitry, direct current busbar voltage detection circuitry, arrival current sensor, control circuit and three two direction switch again, three two direction switch one end be connected to the mid point of the three bridge arm of controlled rectifier respectively, the other end is connected to direct current BUS capacitors's series connection point, back level circuit include three -phase inverter and motor, the utility model relates to a converter is integrated in a circuit with power factor correction circuit, repayment contravariant generating function, has realized the rectifier and inverter integration, has improved power factor, has reduced the hardware complexity, has reduced system's cost, has improved the reliability, makes the efficiency of circuit when the rectification mode have great improvement moreover.
Description
Technical field
This utility model relates to a kind of converter, particularly relates to the energy feedback converter reducing energy consumption.
Background technology
Variable-frequency control technique is to save energy and reduce the cost, improve control performance, improve the important channel of product yield and quality, has achieved proud application effect and significant economic benefit in the application.But, universal frequency converter cannot be directly used to the governing system needing quick starting and braking and frequent forward and backward, limits the range of application of universal frequency converter.And by energy feedback circuit so as to feed back in AC network, be a kind of the most frequently used solution, it is possible to improve the utilization rate of the energy, especially to frequently playing braking or the system transferred with potential energy loading high for a long time, significant power savings can be produced.
Realizing the energy feedback circuit of the integration that the commonly used three-phase controlled rectifier of energy feedback technology is constituted at present in the world, this technology there is also the shortcomings such as rectification efficiency is not high or device is complicated, cost is high, range of application is limited.
Summary of the invention
For the deficiency that prior art exists, this utility model purpose is to provide a kind of precision that can realize motor and brakes, improves motor dynamic property energy-saving and cost-reducing energy feedback converter.
To achieve these goals, this utility model is to realize by the following technical solutions: a kind of high efficiency commutation inversion integration energy feedback converter, it includes front stage circuits and late-class circuit, described front stage circuits includes wave filter, three-phase controlled rectifier, connect between two dc-link capacitance more in parallel, 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 brachium pontis of controlled rectifier, the other end is connected to the series connection point of dc-link capacitance；Described late-class circuit includes three-phase inverter and motor；When busbar voltage is lower than setting value, the switching tube of three-phase controlled rectifier turns off, and its backward diode constitutes boost rectifier with described three two-way switch, carries out PFC, powers to late-class circuit；When busbar voltage is higher than setting value, described three two-way switch are not turned on, and controlled rectifier generates electricity to electrical network feedback with three-phase inverter pattern, carries out PFC.
Its alignment circuit of described motor is based on rotor field-oriented double-closed-loop control pattern.
Motor speed control circuit includes being constituted speed ring by speed regulator, rheonome, space vector pulse width actuator SWPWM, inverter and position sensing and testing circuit, electric current loop is constituted by rheonome, current sense and testing circuit, described speed ring is master controller, controls motor speed consistent with given rotating speed；Electric current loop is submaster controller, controls motor stator electric current.
Circuit of power factor correction, feedback inversion transformation generating function are integrated in a circuit by this utility model converter, achieve commutation inversion integration, improve power factor, reduce hardware complexity, reduce system cost, improve reliability, and make the circuit efficiency when rectification mode be enhanced.
Accompanying drawing explanation
Fig. 1 is this utility model high efficiency commutation inversion integration energy feedback device schematic diagram；
Fig. 2 is this utility model motor speed control circuit vector controlled block diagram.
Detailed description of the invention
Below in conjunction with embodiment shown in the drawings, this utility model is further described.
Such as Fig. 1, in energy feedback system in this utility model, front stage circuits includes wave filter, three-phase controlled rectifier, the dc-link capacitance connecting then in parallel more between two, power grid voltage detection circuit, direct current bus voltage detecting circuit, input current sensor, control circuit, also includes three two-way switch.One end of three two-way switch is connected respectively to the midpoint of three brachium pontis of controlled rectifier, and the other end is all connected to the series connection point of dc-link capacitance；Late-class circuit includes three-phase inverter and motor.When busbar voltage is lower than setting value, the switching tube of three-phase controlled rectifier is both off, and its anti-and diode and three two-way switch constitute boost rectifier, carry out PFC, power to late-class circuit；When busbar voltage is higher than setting value, three two-way switch are not turned on, and controlled rectifier generates electricity to electrical network feedback with three-phase inverter pattern, carries out PFC, the system that ensure that has high power factor and low harmonic wave at rectification state, reaches the purpose of environmental protection.When system is operated in rectification state, two-way 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；Diode participation work more in system, the switching loss of diode, driving loss obtain bigger reduction with conduction loss compared with the switching tube of equal-wattage grade.Therefore, the rectification efficiency of system is improved.
This utility model is integrated in circuit of power factor correction, feedback inversion transformation generating function in a circuit, achieve commutation inversion integration, improve power factor, reduce hardware complexity, reduce system cost, improve reliability, and make the circuit efficiency when rectification mode be enhanced.
Fig. 2 is based on the motor speed control circuit of vector controlled, and it has the advantages such as output torque is steady, startability good, speed-regulating range width, it is adaptable to control performance requires higher system.Figure is a kind of based on rotor field-oriented double-closed-loop control scheme, speed ring is constituted by speed regulator, rheonome, space vector pulse width actuator SWPWM, inverter and position sensing and testing circuit, electric current loop is constituted by rheonome, current sense and testing circuit, speed ring is master controller, controls motor speed consistent with given rotating speed；Electric current loop is submaster controller, controls motor stator electric current.
Adopting this utility model energy feedback converter that technique scheme realizes, its concrete technical parameter can reach as follows:
Table one energy feedback converter technology parameter
Above-described embodiment is only for illustrating technology of the present utility model design and feature; its object is to allow person skilled in the art will appreciate that content of the present utility model and to implement according to this; protection domain of the present utility model can not be limited with this; all equivalences made according to this utility model spirit change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (3)
1. a high efficiency commutation inversion integration energy feedback converter, it is characterized in that, it includes front stage circuits and late-class circuit, described front stage circuits includes wave filter, three-phase controlled rectifier, the dc-link capacitance connecting in parallel more between 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 brachium pontis 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；When busbar voltage is lower than setting value, the switching tube of three-phase controlled rectifier turns off, and its backward diode constitutes boost rectifier with described three two-way switch, carries out PFC, powers to late-class circuit；When busbar voltage is higher than setting value, described three two-way switch are not turned on, and controlled rectifier generates electricity to electrical network feedback with three-phase inverter pattern, carries out PFC.
2. high efficiency commutation inversion integration energy feedback converter according to claim 1, it is characterised in that: its alignment circuit of described motor is based on rotor field-oriented double-closed-loop control pattern.
3. high efficiency commutation inversion integration energy feedback converter according to claim 2, it is characterized in that: motor speed control circuit includes being constituted speed ring by speed regulator, rheonome, space vector pulse width actuator SWPWM, inverter and position sensing and testing circuit, electric current loop is constituted by rheonome, current sense and testing circuit, described speed ring is master controller, controls motor speed consistent with given rotating speed；Electric current loop is submaster controller, controls motor stator electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620155053.5U CN205407284U (en) | 2016-03-02 | 2016-03-02 | High efficiency rectifier and inverter integration energy repayment converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620155053.5U CN205407284U (en) | 2016-03-02 | 2016-03-02 | High efficiency rectifier and inverter integration energy repayment converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205407284U true CN205407284U (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620155053.5U Expired - Fee Related CN205407284U (en) | 2016-03-02 | 2016-03-02 | High efficiency rectifier and inverter integration energy repayment converter |
Country Status (1)
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| CN (1) | CN205407284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154639A (en) * | 2016-03-02 | 2017-09-12 | 西工大常熟研究院有限公司 | High efficiency commutation inversion integration energy feedback frequency converter |
-
2016
- 2016-03-02 CN CN201620155053.5U patent/CN205407284U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154639A (en) * | 2016-03-02 | 2017-09-12 | 西工大常熟研究院有限公司 | High efficiency commutation inversion integration energy feedback frequency converter |
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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: 20160727 Termination date: 20200302 |
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| CF01 | Termination of patent right due to non-payment of annual fee |