CN106655842A - Novel unipolar frequency multiplication SPWM method for single-phase high frequency link matrix rectifier - Google Patents

Novel unipolar frequency multiplication SPWM method for single-phase high frequency link matrix rectifier Download PDF

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CN106655842A
CN106655842A CN201710125120.8A CN201710125120A CN106655842A CN 106655842 A CN106655842 A CN 106655842A CN 201710125120 A CN201710125120 A CN 201710125120A CN 106655842 A CN106655842 A CN 106655842A
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tube
controlled
diode
high frequency
share
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CN106655842B (en
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闫朝阳
李春蕾
刘爽
赵丁选
梁晨阳
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Yanshan University
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Yanshan University
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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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load

Abstract

The invention discloses a novel unipolar frequency multiplication SPWM method for a single-phase high frequency link matrix rectifier. A topology of the single-phase high frequency link matrix rectifier is composed of an alternating-current input voltage U<s>, an LC input filter, a matrix converter, a high-frequency transformer, a backward uncontrolled diode, an L-shaped filter and a load R<dc>, all of which are connected in sequence. According to the modulation method, two positive sinusoidal modulation waves and two negative sinusoidal modulation waves are compared with the same triangular carrier signal, and modulation is performed to generate four SPWM waves; then coupling is performed, that is, eight driving waves are obtained after "and" logic synthesis is performed with high-frequency square signals Vp and Vn; and then "or" logic synthesis is performed to obtain four driving waves S<ah>, S<al>, S<bh> and S<bl>, that is, S<nal> and S<pah> share a driving signal S<ah>, S<nah> and S<pal> share a driving signal S<al>, S<nbl> and S<pbh> share a driving signal S<bh>, and S<nbh> and S<pbl> share a driving signal S<bl>. Through the method, the problem that a primary-side current ip does not have a circulation path due to transformer inductance leakage, and consequently a primary-side voltage peak is generated can be solved; moreover, the method has less switching loss and good output voltage waveform quality.

Description

The novel unipolar alternate frequency multiplication SPWM modulator approach of single-phase high frequency chain matrix commutator
Technical field
The present invention relates to the modulation of power electronics matrix converter and control field, especially in single-phase electricity flow pattern high frequency The modulator approach of chain matrix commutator.
Background technology
Matrix rectifier is developed by AC-AC matrix converters, the conventional rectifier that compares and two-way rectifier, It is standard sine that it has input current, and input side is capable of achieving unity power factor, it is not necessary to Large Copacity energy-storage travelling wave tube, it is only necessary to In input and output side plus the low capacity wave filter for filtering higher hamonic wave, small volume, the advantages of lightweight.High Frequency Link rectification Device using high frequency transformer substitute Industrial Frequency Transformer overcome that traditional transformer volume is big, noise big, high cost the shortcomings of.High frequency Chain matrix changer has drawn High Frequency Link and matrix converter is had the advantage that, is both fusants.Matrix rectification Device does not have an intermediate energy storage link compared with conventional rectifier, compact conformation, small volume, efficiency high, using two-way switch, can be with The two-way flow of energy is realized, and output voltage amplitude and frequency can be with independent controls.
Due to the presence of high frequency transformer leakage inductance, during the high frequency chain matrix changer change of current, become in transformer secondary matrix Larger voltage overshoot, therefore the Safe commutation of matrix converter can be caused on the switching tube of parallel operation always to restrict High Frequency Link and become Parallel operation realizes the technological difficulties promoted on a large scale.Common commutation strategy has four_step commutation strategy, is input into side line based on changer The two-step commutation strategy of polarity of voltage, and the step change of current based on changer input side line voltage polarity and load current direction Strategy.
Although however, above-mentioned strategy can realize Safe commutation, causing the modulation of matrix converter and controlling more multiple It is miscellaneous, and the change of current is unnatural, switching loss is big, output voltage waveforms are second-rate.
The content of the invention
Present invention aim at providing a kind of simple control, nature commutation, switching loss is little, have preferable output voltage ripple The one pole frequency multiplication SPWM current mode of form quality amount is unhitched coupling modulator approach.
For achieving the above object, technical scheme below is employed：The single-phase high frequency chain matrix conversion being related in the present invention Device is by AC-input voltage Us, LC input filters, matrix converter, high frequency transformer T, rear class do not control diode rectification Bridge, L-type wave filter, resistance RdcIt is sequentially connected composition；Wherein, LC input filters are by inductance Lf, resistance RsWith electric capacity CfComposition； Matrix converter is by controlled tr tube Spah, controlled tr tube Spal, controlled tr tube Spbh, controlled tr tube Spbl, controllable open Close pipe Snah, controlled tr tube Snal, controlled tr tube Snbh, controlled tr tube SnblComposition；Rear class do not control diode rectifier bridge by Diode D1, diode D2, diode D3, diode D4Composition；L-type wave filter is inductance Ldc；
AC-input voltage UsOne end and inductance LfOne end connection, inductance LfThe other end and resistance RsOne end connect Connect, resistance RsThe other end respectively with electric capacity CfOne end, controlled tr tube SpahColelctor electrode, controlled tr tube SnahColelctor electrode connects；
AC-input voltage UsThe other end respectively with electric capacity CfThe other end, controlled tr tube SnbhColelctor electrode, gate-controlled switch Pipe SpbhColelctor electrode connects；
Controlled tr tube SpahEmitter stage and controlled tr tube SnalEmitter stage connects, controlled tr tube SnalColelctor electrode point Not with controlled tr tube SnblColelctor electrode, the winding top connection of high frequency transformer T left sides, controlled tr tube SnblEmitter stage with it is controllable Switching tube SpbhEmitter stage connects；
Controlled tr tube SnahEmitter stage and controlled tr tube SpalEmitter stage connects, controlled tr tube SpalColelctor electrode is distinguished With controlled tr tube SpblColelctor electrode, the winding bottom connection of high frequency transformer T left sides, controlled tr tube SpblEmitter stage is opened with controllable Close pipe SnbhEmitter stage connects；
High frequency transformer T right side winding tops and diode D1Anode, diode D2Negative electrode connects；High frequency transformer T right sides Winding bottom and diode D3Anode, diode D4Negative electrode connects；Diode D1Negative electrode respectively with diode D3Negative electrode, inductance Ldc One end connects；Diode D2Anode respectively with diode D4Anode, resistance RdcOne end connects；Resistance RdcThe other end and inductance LdcSeparately One end connects；
The modulator approach is to be compared two positive and negative 50HZ sinusoidal modulation waves with same triangle carrier signal, Modulation generates four SPWM ripples, then carries out knot coupling, i.e., carry out obtaining eight after "AND" logic synthesis with high-frequency square-wave signal Vp and Vn Road drive ripple, then carry out "or" logic synthesis obtain four road Sah、Sal、Sbh、SblDrive ripple, i.e. SnalAnd SpahShare a driving Signal Sah, SnahAnd SpalShare a drive signal Sal, SnblAnd SpbhShare a drive signal Sbh, SnbhAnd SpblShare one Individual drive signal Sbl.AC-input voltage UsOne end and inductance LfOne end connection, inductance LfThe other end and resistance RsOne End connection, resistance RsThe other end respectively with electric capacity CfOne end, controlled tr tube SpahColelctor electrode, controlled tr tube SnahColelctor electrode Connection；
AC-input voltage UsThe other end respectively with electric capacity CfThe other end, controlled tr tube SnbhColelctor electrode, gate-controlled switch Pipe SpbhColelctor electrode connects；
Controlled tr tube SpahEmitter stage and controlled tr tube SnalEmitter stage connects, controlled tr tube SnalColelctor electrode point Not with controlled tr tube SnblColelctor electrode, the winding top connection of high frequency transformer T left sides, controlled tr tube SnblEmitter stage with it is controllable Switching tube SpbhEmitter stage connects；
Controlled tr tube SnahEmitter stage and controlled tr tube SpalEmitter stage connects, controlled tr tube SpalColelctor electrode is distinguished With controlled tr tube SpblColelctor electrode, the winding bottom connection of high frequency transformer T left sides, controlled tr tube SpblEmitter stage is opened with controllable Close pipe SnbhEmitter stage connects；
High frequency transformer T right side winding tops and diode D1Anode, diode D2Negative electrode connects；High frequency transformer T right sides Winding bottom and diode D3Anode, diode D4Negative electrode connects；Diode D1Negative electrode respectively with diode D3Negative electrode, inductance Ldc One end connects；Diode D2Anode respectively with diode D4Anode, resistance RdcOne end connects；Resistance RdcThe other end and inductance LdcSeparately One end connects；
The modulator approach is to be compared two positive and negative 50HZ sinusoidal modulation waves with same triangle carrier signal, Modulation generates four SPWM ripples, then carries out knot coupling, i.e., carry out obtaining eight after "AND" logic synthesis with high-frequency square-wave signal Vp and Vn Road drive ripple, then carry out "or" logic synthesis obtain four road Sah、Sal、Sbh、SblDrive ripple, i.e. SnalAnd SpahShare a driving Signal Sah, SnahAnd SpalShare a drive signal Sal, SnblAnd SpbhShare a drive signal Sbh, SnbhAnd SpblShare one Individual drive signal Sbl。
Modulator approach of the present invention is to enter two positive and negative 50HZ sinusoidal modulation waves with same triangle carrier signal Row compares, and modulation generates four SPWM ripples, then carries out knot coupling, i.e., carry out after "AND" logic synthesis with high-frequency square-wave signal Vp and Vn Obtain eight roads drive ripple, then carry out "or" logic synthesis obtain four road Sah、Sal、Sbh、SblDrive ripple, i.e. SnalAnd SpahShare one Individual drive signal Sah, SnahAnd SpalShare a drive signal Sal, SnblAnd SpbhShare a drive signal Sbh, SnbhAnd Spbl Share a drive signal Sbl。
Further, single-phase high frequency chain matrix converter can be decoupled into the contrary common current type rectification of both direction Device, i.e., just organizing and counter group of commutator；Just organizing controlled tr tube S when commutator workspah、Spal、Spbh、SpblAction, equivalent to anti- Group rectifier switch pipe is off state；Controlled tr tube S when anti-group commutator worksnah、Snal、Snbh、SnblAction, quite State is off in rectifier switch pipe is just organized.
Compared with prior art, the inventive method has the advantage that：
1st, can realize that single-phase high frequency chain commutator current on line side sineization, unity power factor and output are large-scale DC voltage.
2nd, the Safe commutation of single-phase high frequency chain matrix rectifier prime matrix converter switching tube is realized, the leakage of transformator is made Inductance energy is released, and eliminates the due to voltage spikes produced because of the presence transformator of leakage inductance electric current, reduces switching loss.
3rd, modulator approach harmonic inhibition capability is strong, and the voltage ripple frequency of output is that one pole resistant frequency is not added with a times modulation system 2 times of lower voltage ripple frequency, but the frequency of switching tube is not doubled, therefore the loss of switching tube does not increase, effectively Improve output voltage waveforms quality.
4th, simple " with or " logic synthesis is carried out by the modulation of one pole frequency multiplication SPWM and goes driving switch pipe, control mode letter Singly it is easily achieved, improves systematic function, improves overall efficiency.
Description of the drawings
Fig. 1 is present invention single-phase electricity flow pattern high frequency chain matrix rectifier figure used.
Fig. 2 is single-phase electricity flow pattern high frequency chain matrix commutator decoupling figure.
Fig. 3 is the system principle diagram of the inventive method.
Fig. 4 is that the unhitch drive signal of coupling SPWM " with or " logic of single-phase electricity flow pattern one pole frequency multiplication generates figure.
Fig. 5 is that single-phase single-pole frequency multiplication SPWM " with or " Logic current type unhitches the modulation principle figure of coupling.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention will be further described：
As shown in figure 1, for the topology diagram of the inventive method, single-phase high frequency chain matrix converter is by exchanging input electricity Pressure Us, LC input filters, matrix converter, high frequency transformer T, rear class do not control diode rectifier bridge, L-type wave filter, resistance RdcIt is sequentially connected composition；Wherein, LC input filters are by inductance Lf, resistance RsWith electric capacity CfComposition；Matrix converter is by controllable Switching tube Spah, controlled tr tube Spal, controlled tr tube Spbh, controlled tr tube Spbl, controlled tr tube Snah, controlled tr tube Snal, controlled tr tube Snbh, controlled tr tube SnblComposition；Rear class does not control diode rectifier bridge by diode D1, diode D2, two Pole pipe D3, diode D4Composition；L-type wave filter is inductance Ldc；
AC-input voltage UsOne end and inductance LfOne end connection, inductance LfThe other end and resistance RsOne end connect Connect, resistance RsThe other end respectively with electric capacity CfOne end, controlled tr tube SpahColelctor electrode, controlled tr tube SnahColelctor electrode connects；
AC-input voltage UsThe other end respectively with electric capacity CfThe other end, controlled tr tube SnbhColelctor electrode, gate-controlled switch Pipe SpbhColelctor electrode connects；
Controlled tr tube SpahEmitter stage and controlled tr tube SnalEmitter stage connects, controlled tr tube SnalColelctor electrode point Not with controlled tr tube SnblColelctor electrode, the winding top connection of high frequency transformer T left sides, controlled tr tube SnblEmitter stage with it is controllable Switching tube SpbhEmitter stage connects；
Controlled tr tube SnahEmitter stage and controlled tr tube SpalEmitter stage connects, controlled tr tube SpalColelctor electrode is distinguished With controlled tr tube SpblColelctor electrode, the winding bottom connection of high frequency transformer T left sides, controlled tr tube SpblEmitter stage is opened with controllable Close pipe SnbhEmitter stage connects；
High frequency transformer T right side winding tops and diode D1Anode, diode D2Negative electrode connects；High frequency transformer T right sides Winding bottom and diode D3Anode, diode D4Negative electrode connects；Diode D1Negative electrode respectively with diode D3Negative electrode, inductance Ldc One end connects；Diode D2Anode respectively with diode D4Anode, resistance RdcOne end connects；Resistance RdcThe other end and inductance LdcSeparately One end connects.
As shown in Fig. 2 the single-phase electricity flow pattern High Frequency Link matrix rectifier for the present invention decouples schematic diagram, according to one pole frequency multiplication The current mode of SPWM " with or " logic is unhitched coupling modulation principle, and single-phase high frequency chain matrix converter is decoupled into into both direction phase Anti- common current type commutator, i.e., just organizing and counter group of commutator；Just organizing controlled tr tube S when commutator workspah、Spal、 Spbh、SpblAction, equivalent to anti-group rectifier switch pipe state is off；Controlled tr tube S when anti-group commutator worksnah、 Snal、Snbh、SnblAction, equivalent to rectifier switch pipe is just organized state is off
As shown in figure 3, the system principle diagram of the coupling that unhitches for one pole frequency multiplication SPWM " with or " Logic current type, such as figure includes Three parts, Part I for one pole frequency multiplication SPWM signal generation part, two frequencies for 50HZ sinusoidal modulation signal with Triangle carrier signal compares generation；Part II for driving switch pipe signal generation part, four road SPWM signals of generation and High-frequency square-wave signal Vp、VnCarry out generating four drive signals after " with or " logic knot is coupled into；Part III is the change of prime matrix Parallel operation, four road drive signals of generation remove eight switching tubes for driving two bridge arms of matrix converter.
The generation figure of coupling SPWM " with or " logic as shown in figure 4, single-phase electricity flow pattern one pole frequency multiplication is unhitched.Carrier wave is triangle Ripple, modulating wave is 50HZ sine waves, through as depicted relatively after generate four SPWM and drive ripples, then with high frequency square wave Vp、Vn Carry out the synthesis of "AND" logic and obtain eight driving ripple Spah、Spal、Spbh、Spbl、Snah、Snal、Snbh、SnblPatrol followed by "or" Collect synthesis, i.e. SnalAnd SpahShare a drive signal Sah, SnahAnd SpalShare a drive signal Sal, SnblAnd SpbhShare One drive signal Sbh, SnbhAnd SpblShare a drive signal Sbl.When so carrying out the switching tube change of current again, drive without switching Dynamic signal, while also eliminating the transformer voltage spike produced because transformer leakage inductance electric current exists.
As shown in figure 5, the modulation principle figure of the coupling that unhitches for single-phase electricity flow pattern one pole frequency multiplication SPWM " with or " logic.According to list Pole frequency multiplication SPWM is unhitched the driving logic of coupling, can obtain schematic diagram as shown in the figure, wherein UcFor the triangular carrier of high frequency, Ue1For Positive sinusoidal modulation wave, Ue2For bear sinusoidal modulation wave, by Ue1With UcRelatively obtain SPWM1, SPWM2, Ue2With UcRatio Relatively obtain SPWM3, SPWM4；Four road SPWM ripples again with complementary high frequency square wave Vp、VnFirst carry out "AND" logic and carry out "or" again to patrol Collect and finally obtain four tunnels driving ripple Sah、Sal、Sbh、Sbl, the wherein frequency of high frequency square wave is the half of carrier frequency；High frequency transformation Device original edge voltage waveform up is changed into the PWM ripples of bipolarity tri-state by matrix converter.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention Enclose and be defined, on the premise of without departing from design spirit of the present invention, technical side of the those of ordinary skill in the art to the present invention Various modifications and improvement that case is made, all should fall in the protection domain of claims of the present invention determination.

Claims (2)

1. the novel unipolar alternate frequency multiplication SPWM modulator approach of a kind of single-phase high frequency chain matrix commutator, it is characterised in that：It is single-phase High frequency chain matrix changer is by AC-input voltage Us, LC input filters, matrix converter, high frequency transformer T, rear class not Control diode rectifier bridge, L-type wave filter, resistance RdcIt is sequentially connected composition；Wherein, LC input filters are by inductance Lf, resistance Rs With electric capacity CfComposition；Matrix converter is by controlled tr tube Spah, controlled tr tube Spal, controlled tr tube Spbh, gate-controlled switch Pipe Spbl, controlled tr tube Snah, controlled tr tube Snal, controlled tr tube Snbh, controlled tr tube SnblComposition；Rear class does not control two Pole pipe rectifier bridge is by diode D1, diode D2, diode D3, diode D4Composition；L-type wave filter is inductance Ldc；
AC-input voltage UsOne end and inductance LfOne end connection, inductance LfThe other end and resistance RsOne end connection, electricity Resistance RsThe other end respectively with electric capacity CfOne end, controlled tr tube SpahColelctor electrode, controlled tr tube SnahColelctor electrode connects；
AC-input voltage UsThe other end respectively with electric capacity CfThe other end, controlled tr tube SnbhColelctor electrode, controlled tr tube Spbh Colelctor electrode connects；
Controlled tr tube SpahEmitter stage and controlled tr tube SnalEmitter stage connects, controlled tr tube SnalColelctor electrode respectively with Controlled tr tube SnblColelctor electrode, the winding top connection of high frequency transformer T left sides, controlled tr tube SnblEmitter stage and gate-controlled switch Pipe SpbhEmitter stage connects；
Controlled tr tube SnahEmitter stage and controlled tr tube SpalEmitter stage connects, controlled tr tube SpalColelctor electrode respectively with can Control switching tube SpblColelctor electrode, the winding bottom connection of high frequency transformer T left sides, controlled tr tube SpblEmitter stage and controlled tr tube SnbhEmitter stage connects；
High frequency transformer T right side winding tops and diode D1Anode, diode D2Negative electrode connects；High frequency transformer T right sides winding Bottom and diode D3Anode, diode D4Negative electrode connects；Diode D1Negative electrode respectively with diode D3Negative electrode, inductance LdcOne end Connection；Diode D2Anode respectively with diode D4Anode, resistance RdcOne end connects；Resistance RdcThe other end and inductance LdcThe other end Connection；
The modulator approach is to be compared two positive and negative 50HZ sinusoidal modulation waves with same triangle carrier signal, modulation Four SPWM ripples are generated, then carries out knot coupling, i.e., carry out obtaining the drive of eight tunnels after "AND" logic synthesis with high-frequency square-wave signal Vp and Vn Dynamic ripple, then carry out "or" logic synthesis obtain four road Sah、Sal、Sbh、SblDrive ripple, i.e. SnalAnd SpahShare a drive signal Sah, SnahAnd SpalShare a drive signal Sal, SnblAnd SpbhShare a drive signal Sbh, SnbhAnd SpblShare a drive Dynamic signal Sbl。
2. the novel unipolar alternate frequency multiplication SPWM modulator approach of single-phase high frequency chain matrix commutator according to claim 1, It is characterized in that：Single-phase high frequency chain matrix converter can be decoupled into the contrary common current type commutator of both direction, i.e., Just organizing and counter group of commutator；Just organizing controlled tr tube S when commutator workspah、Spal、Spbh、SpblAction, equivalent to the rectification of anti-group Device switching tube is off state；Controlled tr tube S when anti-group commutator worksnah、Snal、Snbh、SnblAction, equivalent to just group Rectifier switch pipe is off state.
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CN112398352A (en) * 2020-11-10 2021-02-23 燕山大学 Three-module combined AC-AC matrix converter and modulation method thereof

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Publication number Priority date Publication date Assignee Title
CN107707143A (en) * 2017-09-12 2018-02-16 燕山大学 A kind of three-phase four-arm high frequency chain matrix rectifier topology and modulator approach
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CN109951088A (en) * 2019-03-26 2019-06-28 哈工大（张家口）工业技术研究院 The control method of single stage type AC-DC converter for electric vehicle battery charger
CN110212781A (en) * 2019-06-14 2019-09-06 燕山大学 Single-phase electricity flow pattern high frequency chain matrix electric power electric transformer topology and modulator approach
CN110212781B (en) * 2019-06-14 2021-01-29 燕山大学 Single-phase current type high-frequency chain matrix type power electronic transformer topology and modulation method
CN112398352A (en) * 2020-11-10 2021-02-23 燕山大学 Three-module combined AC-AC matrix converter and modulation method thereof

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