CN114094858A - Reflux power control method for isolated AC-DC matrix converter - Google Patents
Reflux power control method for isolated AC-DC matrix converter Download PDFInfo
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- 239000011159 matrix material Substances 0.000 title claims abstract description 70
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- 230000009977 dual effect Effects 0.000 claims abstract description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 17
- 230000010363 phase shift Effects 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 101100043644 Mus musculus Stag2 gene Proteins 0.000 claims description 2
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/3353—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Abstract
The invention discloses a reflux power control method of an isolated AC-DC matrix converter. The method comprises the following steps: firstly, the generation mechanism of the backflow power of the isolated AC-DC matrix converter under the traditional single phase-shifting control is explained. Secondly, the working principle of the isolated AC-DC matrix converter under the dual phase-shifting control is analyzed, expressions of inductive currents at different moments and expressions of transmission power and backflow power of the isolated AC-DC matrix converter under the traditional single phase-shifting control and dual phase-shifting control are obtained through deduction, and finally a relational expression which meets the condition that the backflow power is zero is obtained. The control method provided by the invention can not only ensure that the basic input and output performance of the converter is not damaged, but also effectively reduce the backflow power and current of the isolated AC-DC matrix converter, reduce the selection requirement on the power switch tube, increase the power capacity of the system and improve the transmission efficiency of the converter.
Description
Technical Field
The invention relates to the field of matrix converters, in particular to an isolated AC-DC matrix converter and a method for inhibiting backflow power of the isolated AC-DC matrix converter.
Background
The isolated AC-DC matrix converter is a novel AC-DC converter developed on the basis of the AC-DC matrix converter, and has the advantages of high power density, controllable input power factor, bidirectional energy flow, no need of an intermediate direct-current energy storage link and the like. The method has good application value in the fields of battery energy storage, wind power generation, electric vehicles V2G, new energy power generation and the like. The isolated AC-DC matrix converter realizes the bidirectional transmission of energy by a phase-shifting control technology, but the traditional phase-shifting control can cause a large amount of reflux power to be generated in the converter, the reflux power is caused by the reversal of the output voltage of the three-phase-single-phase matrix converter and the transmission inductive current, and the existence of the reflux power can reduce the overall efficiency of the converter, so that certain measures need to be taken to control the isolated AC-DC matrix converter to improve the energy transmission efficiency of the converter. At present, the research on the backflow power is mainly concentrated in a bidirectional full-bridge DC-DC converter, and the research on the backflow power problem in a matrix converter is blank.
Disclosure of Invention
The invention aims to provide a control method for backflow power of an isolated AC-DC matrix converter. Compared with the traditional single phase-shifting control method, the double phase-shifting control method based on the isolated AC-DC matrix converter can completely eliminate the backflow power generated when the isolated AC-DC matrix converter transmits energy. In addition, the method can be realized as follows: different direct-current voltages U are given to the isolated AC-DC matrix converter, the optimal combination of the internal phase-shifting ratio and the external phase-shifting ratio when the reflux power is zero can be obtained by using the method for controlling the reflux power of the isolated AC-DC matrix converter, and the reflux power of the IAMC can be basically eliminated when the optimal internal phase-shifting ratio and the external phase-shifting ratio are met.
In order to achieve the above purpose, the specific technical scheme is as follows:
the topological structure of the isolated AC-DC matrix converter consists of an input filter, an output filter, a three-phase-single-phase matrix converter, a transmission inductor, a high-frequency transformer and an H-bridge converter.
The three-phase-single-phase matrix converter is a bidirectional switch formed by 6 pairs of IGBTs and anti-parallel diodes, wherein the bidirectional switch of each pair is formed by connecting two IGBTs with common emitters, the diodes are used as follow current channels of the two IGBTs, so that a bridge arm is formed, each two bridge arms are connected in series to form a conversion branch, and the three-phase-single-phase matrix converter has 6 bridge arms in total. The two-way switches Sap1 and Sap2 form an upper bridge arm of the phase A, and the two-way switches San1 and San2 form a lower bridge arm of the phase A; the two-way switch Sbp1 and Sbp2 form an upper bridge arm of a B phase, and the two-way switch Sbn1 and Sbn2 form a lower bridge arm of the B phase; the bidirectional switches Scp1 and Scp2 form an upper arm of the C phase, and the bidirectional switches Scn1 and Scn2 form a lower arm of the C phase. The middle point of the upper bridge arm and the lower bridge arm of each branch is connected with the input filter, and the common connecting end of the lower bridge arm in each branch and the common connecting end of the upper bridge arm in each branch are respectively connected with two ends of the high-frequency transformer.
The H-bridge converter is a bidirectional switch consisting of 4 groups of IGBTs and anti-parallel diodes, and the anti-parallel diodes play a role of follow current; each bidirectional switch forms a bridge arm, two bridge arms are connected in series to form a conversion branch, the upper bridge arm S1 and the lower bridge arm S2 form a conversion branch, and similarly, the upper bridge arm S3 and the lower bridge arm S4 form a conversion branch. The middle point of the upper bridge arm and the lower bridge arm of each branch is connected with the secondary side of the transformer, and in addition, the common end of the bridge arms on each branch and the common end of the lower bridge arm are respectively connected with the two sides of the output filter and then connected with the direct current active load.
The method for controlling the backflow power of the isolated AC-DC matrix converter comprises the following specific steps:
step 1) the working modes of the isolated AC-DC matrix converter under the double phase-shifting control are divided into 11, and because the waveform of the inductive current has certain symmetry, only the inductive current expressions of the first 6 working modes are given during analysis.
The inductor current of mode 1 is as follows:
the inductor current of mode 2 is as follows:
since the inductor current of mode 3 is the same as that of mode 2, the inductor current expression is shown in (2).
The inductor current of mode 4 is as follows:
the inductor current of mode 5 is as follows:
the inductor current of mode 6 is as follows:
step 2) because the working modes of the isolated AC-DC matrix converter can be divided into 11, and have certain symmetry according to the waveform of the inductive current, in one PWM period, the magnitudes of the inductive current values at each time have a certain quantitative relationship that is equal or opposite, and the specific magnitude relationship is as follows:
and 3) if the transmission loss of the isolated AC-DC matrix converter is not considered, the transmission power of the isolated AC-DC matrix converter under the dual phase-shifting control is as follows:
if the transmission loss of the converter is not considered, the transmission power of the isolated AC-DC matrix under the traditional single phase-shifting control is as follows:
step 4) in one PWM period, the expression of the reflux power of the isolated AC-DC matrix converter under the control of double phase shifting is as follows:
step 5) is also that in one PWM period, the reflux power expression of the isolated AC-DC matrix converter under the traditional single phase-shift control is as follows:
step 6) according to the relevant knowledge of the matrix converter, in any one PWM period, the two-stage line voltage output by the three-phase-single-phase matrix converter and the duty ratio thereof can be regarded as constants and satisfy the following conditions:
step 7) according to the step 4, if the backflow power of the isolated AC-DC matrix converter is to be completely eliminated, the following relation is only required to be satisfied:
2nU0(D1-D2)+(Uabdab+Uacdac-nU0)＝0 (16)
the control method adopted by the invention has the following advantages: the invention provides a double phase-shifting control method based on an isolated AC-DC matrix converter aiming at the problem that the isolated AC-DC matrix converter can generate a large amount of reflux power during the traditional single phase-shifting control, and the method can still ensure that the network side operates with a unit power factor, the overshoot of the output voltage of the DC side is small, the response speed is high, and the basic performance of the converter can be ensured not to be damaged.
The control method adopted by the invention can determine the optimal internal and external phase-shifting ratio combination when the isolated AC-DC matrix converter reflux power is zero under the condition of giving different direct-current voltages and external phase-shifting ratios of the converter, and can eliminate the reflux power of the converter when the phase-shifting ratio combination is met. In addition, the control method can effectively reduce the current stress and improve the overall efficiency of the converter while reducing the reflux power of the converter.
Drawings
Fig. 1 is a topology structure diagram of an isolated AC-DC matrix converter according to the present invention.
Fig. 2 is a schematic diagram of the operation of the isolated AC-DC matrix converter according to the embodiment of the present invention under single phase shift control.
Fig. 3 is a schematic diagram of the operation of the isolated AC-DC matrix converter under the dual phase shift control according to the embodiment of the present invention.
FIG. 4 is a waveform diagram of a system under single phase shift control according to an embodiment of the present invention
FIG. 5 is a waveform diagram of a system under dual phase shift control according to an embodiment of the present invention
Detailed Description
As shown in fig. 1, the present embodiment employs an isolated AC-DC matrix converter, which is composed of a three-phase AC power, an input filter, a three-phase-single-phase matrix converter, a transmission inductor, a high-frequency transformer T, H bridge converter, an output filter, and a DC active load. The three-phase-single-phase matrix converter is composed of 6 groups of bidirectional power switches, can convert three-phase sinusoidal electricity on a network side into single-phase high-frequency positive and negative staggered alternating current, then realizes electrical isolation and flexible voltage transformation between an input side and an output side through a high-frequency transformer, and finally converts the alternating current into direct current through an H bridge, and the converter can realize bidirectional flow of electric energy.
As shown in FIG. 2, the isolated AC-DC matrix converter adopts the traditional phase shift control, t is in one PWM periodc-t01，t3-t4Primary voltage V of transformer in time period1The input power of the converter is negative, which indicates that the power flows back to the alternating current power supply on the primary side from the direct current active load side through the high-frequency transformer in the time period, the power of the converter is defined as the converted back flow power, the back flow power is increased, and the overall efficiency of the converter is naturally reduced, so that the invention is embodied and has certain research significance.
As shown in fig. 3, after analyzing a generation mechanism of a backflow power in the isolated AC-DC matrix converter shown in fig. 2, the present invention adopts a dual phase shift control method suitable for the isolated AC-DC matrix converter, which includes the specific steps of:
1) t shown in FIG. 2 by introducing phase shift control in a three-phase to single-phase matrix converterc-t01，t3-t4Time periods are split into t shown in fig. 30-ta、ta-tbAnd tp-te、te-tfAt t0-taAnd tp-teDuring the time period, the output voltage of the three-phase-single-phase matrix converter is zero, namely the reflux power is zero, if at taAnd teThe time before is reduced to zero, the backflow power of the converter can be completely eliminated.
2) According to the proposed principle of dual phase-shift control, the operation condition of the isolated AC-DC matrix converter is divided into 11 working modes, the conduction condition of a switching tube and the expression of the transmission inductive current in each mode are determined, and the specific expression of the inductive current at each moment in one PWM period is obtained by combining the symmetry of the transmission inductive current in each PWM period.
3) And (3) determining an expression of transmission power and return power of the isolated AC-DC matrix converter under the traditional single-phase-shift control and double-phase-shift control according to the conditions in the step (2), and reasonably simplifying the expression by combining the knowledge about the matrix converter.
4) According to the deduced expression of the reflux power of the converter under the dual phase-shifting control, the optimal combination of the internal phase-shifting ratio and the external phase-shifting ratio when the reflux power is zero can be obtained, and when the isolated AC-DC matrix converter meets the optimal internal phase-shifting ratio and the external phase-shifting ratio under different working conditions, the reflux power of the converter can be eliminated.
The above examples are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and any other changes, substitutions, modifications, simplifications, combinations and alterations made without departing from the spirit and principles of the present invention should be construed as being equivalent substitutions and protection within the scope of the present invention as defined by the claims.
Claims (5)
1. A topological structure of an isolated AC-DC matrix converter is characterized in that: the converter is composed of a three-phase alternating current power supply, an input filter, a three-phase-single-phase matrix converter, a transmission inductor, a high-frequency transformer, an H-bridge converter, an output filter and a direct current active load.
2. The isolated AC-DC matrix converter of claim 1, wherein: the three-phase-single-phase matrix converter is a bidirectional switch formed by 6 pairs of IGBTs and anti-parallel diodes, wherein each pair of bidirectional switches is formed by connecting two IGBTs with common emitters, the diodes are used as follow current channels of the two IGBTs, a bridge arm is further formed, every two bridge arms are connected in series to form a conversion branch, and the three-phase-single-phase matrix converter has 6 bridge arms in total. The two-way switches Sap1 and Sap2 form an upper bridge arm of the phase A, and the two-way switches San1 and San2 form a lower bridge arm of the phase A; the two-way switch Sbp1 and Sbp2 form an upper bridge arm of a B phase, and the two-way switch Sbn1 and Sbn2 form a lower bridge arm of the B phase; the bidirectional switches Scp1 and Scp2 form an upper arm of the C phase, and the bidirectional switches Scn1 and Scn2 form a lower arm of the C phase. The middle point of the upper bridge arm and the lower bridge arm of each branch is connected with the input filter, and the common connecting end of the lower bridge arm in each branch and the common connecting end of the upper bridge arm in each branch are respectively connected with two ends of the high-frequency transformer.
3. The isolated AC-DC matrix converter of claim 2, wherein: the H-bridge converter is composed of a bidirectional switch consisting of 4 groups of IGBTs and anti-parallel diodes, and the anti-parallel diodes play a role in follow current; each bidirectional switch forms a bridge arm, two bridge arms are connected in series to form a conversion branch, the upper bridge arm S1 and the lower bridge arm S2 form a conversion branch, and similarly, the upper bridge arm S3 and the lower bridge arm S4 form a conversion branch. The middle point of the upper bridge arm and the lower bridge arm of each branch is connected with the secondary side of the transformer, and in addition, the common end of the bridge arms on each branch and the common end of the lower bridge arm are respectively connected with the two sides of the output filter and then connected with the direct current active load.
4. The isolated AC-DC matrix converter backflow power control method according to claims 1-3, comprising the following steps:
1) the working modes of the isolated AC-DC matrix converter under the dual phase-shifting control are divided into 11, and because the waveform of the inductive current has certain symmetry, the inductive current expressions of the first 6 working modes are only needed to be solved during analysis.
2) Because the working modes of the isolated AC-DC matrix converter are 11, a certain symmetry rule is provided in a PWM period in combination with the magnitude of the inductance current value, and the magnitude of the current value at each moment has a certain equal or opposite quantitative relation, a specific expression of the inductance current value at a key moment in the PWM period can be obtained.
3) If the transmission power loss of the converter is not considered, an expression of the transmission power of the isolated AC-DC matrix converter under the traditional single phase-shifting control and the proposed double phase-shifting control can be obtained.
4) The expression of the reflux power of the isolated AC-DC matrix converter under the single-phase-shift control and the double-phase-shift control can be obtained without considering the transmission power loss of the converter.
5) According to the relevant knowledge of the matrix converter, in any one PWM period, the two-stage line voltage output by the three-phase-single-phase matrix converter and the corresponding duty ratio thereof can be regarded as constants, and the following expression is satisfied:
5. according to claim 4 there is obtained: if the backflow power of the isolated AC-DC matrix converter during power transmission is required to be eliminated, the following relational expression is only required to be satisfied:
2nU0(D1-D2)+(Uabdab+Uacdac-nU0)＝0 (2)
when the isolated AC-DC matrix converter satisfies the formula (2), the optimal internal and external phase-shift ratio combination when the isolated AC-DC matrix converter reflux power is zero can be determined under the condition that different direct-current voltages and external phase-shift ratios of the converter are given, and when the phase-shift ratio combination is satisfied, the reflux power of the converter can be eliminated. In addition, the control method can effectively reduce the current stress while reducing the backflow power of the converter.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170229972A1 (en) * | 2014-08-13 | 2017-08-10 | Inesc Tec - Instituto de Engenharia de Sistema e Computadores, Tecnologia e Ciência | Ac/dc converter with three to single phase matrix converter, full-bridge ac/dc converter and hf transformer |
| CN109980761A (en) * | 2019-04-03 | 2019-07-05 | 湘潭大学 | Two-way High Frequency Link AC-DC matrix converter and its control method |
| CN110719030A (en) * | 2019-08-27 | 2020-01-21 | 河北工业大学 | Dual phase-shift modulation method for isolated bidirectional full-bridge DC-DC converter |
| CN111490684A (en) * | 2020-05-19 | 2020-08-04 | 湘潭大学 | Network side power factor and harmonic suppression strategy of isolated AC-DC matrix converter |
| CN112436731A (en) * | 2020-11-11 | 2021-03-02 | 西北工业大学 | DAB-IBDC non-circulation control method based on multiple phase shifting |
| CN113114043A (en) * | 2021-04-30 | 2021-07-13 | 福州大学 | Three-phase-shift zero-reflux power optimization method for double-active full-bridge bidirectional direct-current converter |
-
2021
- 2021-12-03 CN CN202111479901.XA patent/CN114094858A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170229972A1 (en) * | 2014-08-13 | 2017-08-10 | Inesc Tec - Instituto de Engenharia de Sistema e Computadores, Tecnologia e Ciência | Ac/dc converter with three to single phase matrix converter, full-bridge ac/dc converter and hf transformer |
| CN109980761A (en) * | 2019-04-03 | 2019-07-05 | 湘潭大学 | Two-way High Frequency Link AC-DC matrix converter and its control method |
| CN110719030A (en) * | 2019-08-27 | 2020-01-21 | 河北工业大学 | Dual phase-shift modulation method for isolated bidirectional full-bridge DC-DC converter |
| CN111490684A (en) * | 2020-05-19 | 2020-08-04 | 湘潭大学 | Network side power factor and harmonic suppression strategy of isolated AC-DC matrix converter |
| CN112436731A (en) * | 2020-11-11 | 2021-03-02 | 西北工业大学 | DAB-IBDC non-circulation control method based on multiple phase shifting |
| CN113114043A (en) * | 2021-04-30 | 2021-07-13 | 福州大学 | Three-phase-shift zero-reflux power optimization method for double-active full-bridge bidirectional direct-current converter |
Non-Patent Citations (2)
| Title |
|---|
| SHENGWEI GAO; XIN LU; XIAOMING LIU: "Minimum reflux power control of bidirectional DC-DC converter based on dual phase shifting", 2018 IEEE 2ND INTERNATIONAL ELECTRICAL AND ENERGY CONFERENCE (CIEEC), pages 440 - 445 * |
| 魏腾飞;王晓兰;李晓晓;: "双向直流隔离变换器功率回流的分析及消除", 电机与控制学报, no. 11, pages 104 - 112 * |
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Application publication date: 20220225 |