CN201797450U - Dual-Boost inversion pre-stage high-frequency link matrix three-phase four-leg converter - Google Patents
Dual-Boost inversion pre-stage high-frequency link matrix three-phase four-leg converter Download PDFInfo
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- CN201797450U CN201797450U CN2009202544086U CN200920254408U CN201797450U CN 201797450 U CN201797450 U CN 201797450U CN 2009202544086 U CN2009202544086 U CN 2009202544086U CN 200920254408 U CN200920254408 U CN 200920254408U CN 201797450 U CN201797450 U CN 201797450U
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Abstract
A dual-Boost inversion pre-stage high-frequency linked matrix three-phase four-leg converter belongs to the field of isolation high-frequency power conversion, and comprises a dual-Boost high-frequency inverter circuit (1), a high-frequency link transformer (2), a matrix three-phase four-leg converter (3) and a system output link (4). The dual-Boost circuit realizes amplitude-modulation boost high-frequency inversion; the high-frequency transformer is used for electrical isolation and energy transfer; the matrix three-phase four-leg converter realizes symmetric and balanced alternating-current output when load is unbalanced; and the system output link is connected with an electric device. The dual-Boost inversion pre-stage high-frequency link matrix three-phase four-leg converter has the outstanding advantage of the function of solving the problem of unbalanced load simultaneously by the aid of high-frequency isolation conversion, boost inversion, three-phase four-leg power conversion. Besides, the number of boost inverter circuit devices is only half of bridge inverter devices with the same capacity, the number of turns of a transformer winding and the influence of parasitic parameters of the transformer can be reduced by boost regulation, and post-stage legs are uniform in structures, and are suitable for modularization and easy for integration.
Description
Technical field
The utility model relates to two Boost inversion preceding stage high frequency link matrix type three-phase four-arms to converter, belongs to isolated form HF power conversion field.
Background technology
Inverter circuit is a kind of topology apparatus that the direct current energy dress is changed into AC energy.
Conventional inverter often is divided into square wave output type and sinewave output type, adds Industrial Frequency Transformer when relating to isolating and need exporting at inverter between (or public electric wire net) during buck, has that volume is big, shortcomings such as heavy, industrial frequency noise and dynamic corresponding difference.
High-frequency chain inverter adopts high frequency transformer to substitute the shortcoming that Industrial Frequency Transformer has overcome the isolation applications of traditional transformer.The power features of high-frequency chain inverter is DC/HFAC/LFAC three a steps power conversion process, wherein, HFAC: high-frequency ac, LFAC: low-frequency ac, as seen having occurred AC/AC in this type of inverter is the AC/AC transform part, and this link also often is called frequency converter or matrix converter link.Matrix converter is compared with conventional transducers, does not have the intermediate energy storage link, adopts bidirectional switch, can realize the two-way flow of energy, and compact conformation, volume is little, efficient is high, and output voltage amplitude and frequency can independently be controlled.
Imbalance problem is serious problems in the application of three-phase alternating current, and the three-phase imbalance problem comprises two aspects, i.e. uneven the and three phase mains imbalance of threephase load.The threephase load imbalance is meant that the load impedance in the three-phase system is not exclusively equal, and the three phase mains imbalance is meant the three-phase electromotive force imbalance in the three-phase electrical power system.In equipment such as three-phase inverter, refer to mainly because the three-phase output voltage imbalance that laod unbalance causes, and that in the power-supply system of general occasion load is also uneven often and change, this will ask inverter to form three-phase and four-line output system.
The utility model adopts the high frequency chain transformaiton to solve the shortcoming of Industrial Frequency Transformer heaviness, the amplitude modulation inversion makes that the design of transformer is more succinct and can reduce its parasitic parameter influence but employing is boosted, to the influence that three-phase output type matrix converter solves laod unbalance, is a kind of power conversion topologies of novel practical with four arms with AC/AC ability to transform.
Summary of the invention
The purpose of this utility model is to provide a kind of can save switching device and switching loss, can solve the three-phase equilibrium problem again, has the high power density energy conversion topology of high frequency chain and matrix converter advantage simultaneously concurrently.Designed main circuit topology is applied to three-phase four-arm in the matrix inverter topology to technology, and used as the back level of high-frequency chain inverter, not only can solve the unbalanced problem of threephase load, also has the advantage of matrix converter and high frequency chain transformaiton concurrently.
Two Boost inversion preceding stage high frequency link matrix type three-phase four-arms comprise two Boost high-frequency inverter circuits to the transformation topology power conversion architecture, high-frequency isolation transformer, and matrix type three-phase four-arm is to converter.Two Boost high-frequency inverter circuits realize that direct current is to the transformation of high-frequency ac and with the former limit input of its output as high-frequency isolation transformer, high-frequency isolation transformer plays its secondary output of effect of isolation and power transfer as the input of matrix type three-phase four-arm to converter, and matrix type three-phase four-arm plays the high frequency single phase alternating current (A.C.) has ability from the load of band three-phase imbalance to the effect of low frequency three-phase alternating current conversion to converter.
The beneficial effects of the utility model are: high frequency chain prime adopts two Boost drives, behind the high frequency chain level combine three-phase four-arm to the advantage of matrix converter, effectively reduce switch number and switching loss, solved the problem of three-phase imbalance load simultaneously.
Description of drawings
Fig. 1 is the two Boost high-frequency inverter circuit topologys of prime of the present utility model.
Fig. 2 adopts common collector differential concatenation IGBT combined bidirectional switch for the utility model
Fig. 3 the utlity model has the high frequency link matrix type three-phase four-arm of two Boost front stage circuits to transformation topology.
Embodiment
Fig. 1 is designed two Boost high-frequency inverter circuit topologys.It is made up of two full control switches and two energy storage inductors, and the trigger impulse G1 of two full control switch M1 and M2 and G2 are double two-phase, and phase phasic difference 180 square wave of spending.Two Boost DC/DC translation circuits of the crisscross parallel type that the similar of this pair Boost high-frequency inverter circuit is common.Diode has wherein been saved in the output of different is two Boost high-frequency inverter circuits, and directly articulates load in the position of diode, is output as high-frequency ac and exports thereby become direct current.By controlling the alternation of two Boost converters, can realize the energy conversion of DC/HFAC.Specifically be formed by connecting among the design by power field effect pipe switch M1, M2 and inductance L 1, L2, the source electrode of two field effect transistor and drain electrode are connected on respectively between the cold end of direct-current input power supplying DC and inductance L 1, the L2, inductance L 1, L2 are connected between the drain electrode of the hot end of direct-current input power supplying DC and field effect transistor M1, M2, and the interface of the interface of field effect transistor M1 and inductance L 1 and field effect transistor M2 and inductance L 2 is as the output of this step-up transformer.
Fig. 2 is for the common collector differential concatenation IGBT combined bidirectional switch AC energy that can flow, for the energy two-way flow provides path.Constitute the basic device of matrix type three-phase four-arm during this switch to converter.
Fig. 3 is that two Boost inversion preceding stage high frequency link matrix type three-phase four-arms are to transformation topology assembly figure.As seen from the figure the design's high-frequency chain inverter main circuit topology with high frequency transformer as electrical isolation and power transfer link, substitute the power conversion that the low frequency power conversion realizes small size and high power density with HF power conversion, converter 3 and system's output element 4 are formed by two Boost high-frequency inversion front stage circuits 1, high frequency chain transformer 2, matrix type three-phase four-arm.Wherein, prime is the abbreviation of the former limit of high frequency transformer part, and the back level is the abbreviation of high frequency transformer secondary part.The output of two Boost high-frequency inversion front stage circuits 1 connects the former limit of high frequency chain transformer 2, the secondary output of high frequency chain transformer 2 is as the interchange input of matrix type three-phase four-arm to converter 3, matrix type three-phase four-arm to being responsible for the balance adjustment to unbalanced load, connects the neutral line of output element 4 loads to the N arm of converter 3.Wherein matrix type three-phase four-arm is formed bridge architecture to converter by the power bi-directional switch shown in 8 picture groups 2,8 groups of bidirectional switchs adhere to separately 4 arms to comprise 1 N arm to 3 ABC arms to together, wherein the series connection node of right two the bidirectional switch pipes of N arm is connected in the star-like common point of three loads, and the series connection node of two bidirectional switchs that three ABC arms are right is connected in the other end of threephase load respectively.When towards unbalanced load, adopting SPWM, SVPWM control to this its, the exportable low frequency three phase sine alternating current wave of topology with anti-balance load capacity.
Claims (3)
1. two Boost inversion preceding stage high frequency link matrix type three-phase four-arms are to converter, this converter comprises two Boost high-frequency inversion front stage circuits (1), high frequency chain transformer (2), matrix type three-phase four-arm is to converter (3) and system's output element (4), wherein, prime and back level define with the former secondary of transformer, prime is the abbreviation of the former limit of high frequency transformer previous section, the back level is the abbreviation of high frequency transformer secondary aft section, this converter is characterised in that, the output of two Boost high-frequency inversion front stage circuits (1) connects the former limit of high frequency chain transformer (2), the secondary output of high frequency chain transformer (2) is as the interchange input of matrix type three-phase four-arm to converter (3), matrix type three-phase four-arm connects output element (4) threephase load to ABC three arms of converter (3) to being responsible for three-phase alternating current, matrix type three-phase four-arm to the N arm of converter (3) to being responsible for the balance adjustment of unbalanced load is connected the neutral line of output element (4) load.
According to claim 1 pair Boost inversion preceding stage high frequency link matrix type three-phase four-arm to converter, it is characterized in that: two BOOST high-frequency inverter circuits are formed by connecting by power switch and inductance, among the design specifically by power field effect pipe switch M1, M2 and inductance L 1, L2 is formed by connecting, the source electrode of two field effect transistor and drain electrode are connected on cold end and the inductance L 1 of direct-current input power supplying DC respectively, between the L2, inductance L 1, L2 is connected to hot end and the field effect transistor M1 of direct-current input power supplying DC, between the drain electrode of M2, the interface of the interface of field effect transistor M1 and inductance L 1 and field effect transistor M2 and inductance L 2 is as the output of this step-up transformer.
According to claim 1 pair Boost inversion preceding stage high frequency link matrix type three-phase four-arm to converter, it is characterized in that: matrix type three-phase four-arm to 4 arms of converter to being composed in series by 8 two-way gate-controlled switches, each bidirectional switch adopts controlled power device IGBT differential concatenation formation in twos, i.e. the inner public connection drain electrode of emitter-base bandgap grading externally connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202544086U CN201797450U (en) | 2009-11-06 | 2009-11-06 | Dual-Boost inversion pre-stage high-frequency link matrix three-phase four-leg converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202544086U CN201797450U (en) | 2009-11-06 | 2009-11-06 | Dual-Boost inversion pre-stage high-frequency link matrix three-phase four-leg converter |
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| Publication Number | Publication Date |
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| CN201797450U true CN201797450U (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202544086U Expired - Lifetime CN201797450U (en) | 2009-11-06 | 2009-11-06 | Dual-Boost inversion pre-stage high-frequency link matrix three-phase four-leg converter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103501122A (en) * | 2013-10-06 | 2014-01-08 | 徐宏 | Isolating-type matrix converter and sector handoff soft switching method |
| CN103688456A (en) * | 2011-09-06 | 2014-03-26 | 日产自动车株式会社 | Power conversion device |
| CN110943641A (en) * | 2019-11-22 | 2020-03-31 | 燕山大学 | Pulse width modulation method of current type three-phase high-frequency link matrix inverter |
-
2009
- 2009-11-06 CN CN2009202544086U patent/CN201797450U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103688456A (en) * | 2011-09-06 | 2014-03-26 | 日产自动车株式会社 | Power conversion device |
| CN103688456B (en) * | 2011-09-06 | 2016-04-27 | 日产自动车株式会社 | Power-converting device |
| CN103501122A (en) * | 2013-10-06 | 2014-01-08 | 徐宏 | Isolating-type matrix converter and sector handoff soft switching method |
| CN110943641A (en) * | 2019-11-22 | 2020-03-31 | 燕山大学 | Pulse width modulation method of current type three-phase high-frequency link matrix inverter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110413 Effective date of abandoning: 20091106 |