NL2030729B1 - Transformer voltage regulating device based on power electronic technology - Google Patents

Transformer voltage regulating device based on power electronic technology Download PDF

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Publication number
NL2030729B1
NL2030729B1 NL2030729A NL2030729A NL2030729B1 NL 2030729 B1 NL2030729 B1 NL 2030729B1 NL 2030729 A NL2030729 A NL 2030729A NL 2030729 A NL2030729 A NL 2030729A NL 2030729 B1 NL2030729 B1 NL 2030729B1
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NL
Netherlands
Prior art keywords
transformer
input end
voltage
power module
circuit
Prior art date
Application number
NL2030729A
Other languages
Dutch (nl)
Inventor
Song Nana
Wang Shaoju
Wang Shuchao
Zhang Qishun
Tang Hong
Zhang Xinhong
Sun Zhiyin
Zhang Longbiao
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Tang Hong
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Priority to NL2030729A priority Critical patent/NL2030729B1/en
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Publication of NL2030729B1 publication Critical patent/NL2030729B1/en

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Classifications

    • 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • 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
    • H02M1/007—Plural converter units in cascade
    • 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
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

A transformer voltage regulating device based on power electronic technology, wherein a live wire input end L_IN of a pressure regulating coil in the voltage regulating transformer is connected to an input end of a power transformer, an input end of a 5 rectifier circuit and, an input end, of a synchronous detection circuit respectively; the rectifier circuit is connected to two ends of a secondary coil in the voltage regulating transformer Tl through a driving circuit respectively, and a live wire output end L_OUT of the voltage regulating coil in the voltage regulating lO transformer is connected to an input end of a feedback circuit; an output end of the synchronous detection circuit and an output end of the feedback circuit are respectively connected to an input end of a single chip microcomputer, pulse signals output by the single chip microcomputer is connected to a control end of the driving 15 circuit.

Description

P1091 /NLpd
TRANSFORMER VOLTAGE REGULATING DEVICE BASED ON POWER ELECTRONIC
TECHNOLOGY
TECHNICAL FIELD
The present disclosure belongs to a technical field of volt- age regulating device, in particular to a transformer voltage reg- ulating device based on power electronic technology.
BACKGROUND ART
In the existing transformer voltage regulating technology, voltage regulation is mainly realized by changing the tap position of transformer tap winding, that is, changing the voltage ratio to realize voltage regulation. Tap changer connection is usually used to switch the tap of transformer. The main disadvantages of the technology are: 1. short service life and high failure rate; 2. complex circuit and transformer process; 3. low voltage regulation accuracy, and stepless adjustment cannot be achieved; 4. voltage unbalance rate cannot be adjusted.
SUMMARY
In order to overcome the shortcomings of the prior art, the present disclosure provides a transformer voltage regulating de- vice based on power electronic technology, which can simplify the manufacturing process of the voltage regulator and prolong the service life of the voltage regulator.
The present disclosure adopts the following technical scheme to solve the above technical problems, a transformer voltage regu- lating device based on power electronic technology, including a voltage regulating transformer Tl, wherein a live wire input end
L IN of a pressure regulating coil in the voltage regulating transformer is connected to an input end of a power transformer, an input end of a rectifier circuit and an input end of a synchro- nous detection circuit respectively; the rectifier circuit is con- nected to two ends of a secondary coil in the voltage regulating transformer Tl through a driving circuit respectively, and a live wire output end L OUT of the voltage regulating coil in the volt- age regulating transformer is connected to an input end of a feed- back circuit; an output end of the synchronous detection circuit and an output end of the feedback circuit are respectively con- nected to an input end of a single chip microcomputer, and pulse signals output by the single chip microcomputer is connected to a control end of the driving circuit.
Further limitation, an AC input end of a bridge rectifier D1 in the rectifier circuit is respectively connected to the live wire input end L IN and a neutral line input end N; a DC positive end of the rectifier Dl is respectively connected to a positive electrode of a capacitor Cl, a collector of an IGBT power module
Ql and a collector of an IGBT power module Q3 in the driving cir- cuit; a DC negative end of the rectifier Dl is respectively con- nected to a negative electrode of the capacitor Cl, an emitter of the IGBT power module Q2 and an emitter of the IGBT power module
Q4 in the driving circuit; an emitter of the IGBT power module Q1 and a collector of the IGBT power module Q2 in the driving circuit are respectively connected to one end of the secondary coil in the voltage regulating transformer Tl; and an emitter of the IGBT pow- er module 93 and a collector of IGBT power module Q4 in the driv- ing circuit are respectively connected to the other end of the secondary coil in voltage regulating transformer T1.
Further limitation, the synchronous detection circuit in- cludes a voltage transformer T2 and a comparator UlB, wherein one end of a primary coil in the voltage transformer T2 is connected to the neutral line input end N through a resistance Rl, and the other end of the primary coil in the voltage transformer T2 is connected to the live line input end L IN through a resistance R2, one end of a secondary coil in the voltage transformer T2 is con- nected to an inverting input end of the comparator UlB through a resistance R3, and the other end of the secondary coil in the voltage transformer T2 is connected to an in-phase input end of the comparator UlB through a resistance R4.
Further limitation, the feedback circuit includes a voltage transformer T3 and a comparator U2B, wherein one end of a primary coil in the voltage transformer T3 is connected to the live line output end L OUT through a resistance R5, the other end of the primary coil in the voltage transformer T3 is connected to the neutral line input end N through a resistance R6; one end of the secondary coil in voltage transformer T3 is connected to an in- verse input end of the comparator U2B through a resistance R7, and the other end of the secondary coil in the voltage transformer T3 is connected to an in-phase input end of the comparator U2B through a resistance RS.
Further limitation, an output end of the comparator ULB in the synchronous detection circuit and an output end of the compar- ator U2B in the feedback circuit are respectively connected to an input end of a single chip microcomputer MPU, a timer is arranged on the single chip microcomputer MPU, and an output end of the single chip microcomputer MPU is respectively connected to gates of the IGBT power module Ql, the IGBT power module QZ, the IGBT power module Q3 and the IGBT power module Q4 in the driving cir- cuit.
Compared with the prior art, the present disclosure has the following beneficial effects: the present disclosure has simple structure and reasonable design, effectively increases the service life of the voltage regulating device, and the voltage regulating device can realize stepless voltage regulation and voltage stabi- lizing regulation.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a circuit module diagram of the present disclosure;
Fig. 2 is a circuit schematic diagram of the present disclo- sure.
DETAILED DESCRIPTION OF THE EMBODIMENTS
The technical scheme of the present disclosure is described in detail in combination with the accompanying drawings, as shown in Fig. 1-2, a transformer voltage regulating device based on pow- er electronic technology includes a voltage regulating transform- er Tl, wherein a live wire input end L IN of a pressure regulating coil in the voltage regulating transformer is connected to an in- put end of a power transformer, an input end of a rectifier cir-
cuit and an input end of a synchronous detection circuit respec- tively; the rectifier circuit is connected to two ends of a sec- ondary coil in the voltage regulating transformer Tl through a driving circuit respectively, and a live wire output end L OUT of the voltage regulating coil in the voltage regulating transformer is connected to an input end of a feedback circuit; an output end of the synchronous detection circuit and an output end of the feedback circuit are respectively connected to an input end of a single chip microcomputer, and pulse signals output by the single chip microcomputer is connected to a control end of the driving circuit.
In the present disclosure, an AC input end of a bridge recti- fier D1 in the rectifier circuit is respectively connected to the live wire input end L IN and a neutral line input end N; a DC positive end of the rectifier D1 is respectively connected to a positive electrode of a capacitor Cl, a collector of an IGBT power module Q1 and a collector of an IGBT power module Q3 in the driv- ing circuit; a DC negative end of the rectifier D1 is respectively connected to a negative electrode of the capacitor Cl, an emitter of the IGBT power module Q2 and an emitter of the IGBT power mod- ule Q4 in the driving circuit; an emitter of the IGBT power module
Q1 and a collector of the IGBT power module Q2 in the driving cir- cuit are respectively connected to one end of the secondary coil in the voltage regulating transformer Tl; and an emitter of the
IGBT power module Q3 and a collector of IGBT power module Q4 in the driving circuit are respectively connected to the other end of the secondary coil in voltage regulating transformer T1.
In the present disclosure, the synchronous detection circuit includes a voltage transformer T2 and a comparator UlB, wherein one end of a primary coil in the voltage transformer T2 is con- nected to the neutral line input end N through a resistance RI, and the other end of the primary coil in the voltage transformer
T2 is connected to the live line input end L IN through a re- sistance R2, one end of a secondary coil in the voltage transform- er T2 is connected to an inverting input end of the comparator U1B through a resistance R3, and the other end of the secondary coil in the voltage transformer T2 is connected to an in-phase input end of the comparator UlB through a resistance R4.
In the present disclosure, the feedback circuit includes a voltage transformer T3 and a comparator U2B, wherein one end of a primary ceil in the voltage transformer T3 is connected to the 5 live line output end L OUT through a resistance R5, the other end of the primary coil in the voltage transformer T3 is connected to the neutral line input end N through a resistance R6; one end of the secondary coil in voltage transformer T3 is connected to an inverse input end of the comparator U2B through a resistance R7, and the other end of the secondary coil in the voltage transformer
T3 is connected to an in-phase input end of the comparator U2B through a resistance RS.
In the present disclosure, an output end of the comparator
UlB in the synchronous detection circuit and an output end of the comparator U2B in the feedback circuit are respectively connected to an input end of a single chip microcomputer MPU, a timer is ar- ranged on the single chip microcomputer MPU, and an output end of the single chip microcomputer MPU is respectively connected to gates of the IGBT power module Ql, the IGBT power module Q2, the
IGBT power module Q3 and the IGBT power module Q4 in the driving circuit.
The present disclosure sends cut a series of narrow pulses according to the sine wave law through the single chip microcom- puter, so that the area of the sent narrow pulse is equal to the area of each corresponding sine wave, that is, it sends out an equivalent impulse. According to the "impulse equivalence" theory, the width of each narrow pulse is controlled according to the sine wave law, that is the amplitude of the generated sine wave can be adjusted. Then induction to the output end of the voltage regulat- ing transformer is equivalent to adjusting the output voltage of the power transformer. The purpose of step-up or step-down is achieved by changing the phase, and the purpose of adjusting the amplitude of step-up and step-down is achieved by changing the output voltage.
The present disclosure is provided with the single chip mi- crocomputer. The single chip microcomputer is provided with a tim- er. The output voltage is adjusted by using the timer to control the pulse width. However, the single chip microcomputer timer usu- ally has high resolution. Therefore, stepless voltage regulation can be achieved by using this technology.
The present disclosure is provided with the synchronous de- tection circuit. By using the synchronous detection circuit to sample signals and strictly control the sine wave sent in the same direction or reverse direction with the waveform of the power transformer, so that the device can only play the role of step-up or step-down without generating harmonics.
The present disclosure is used in the three-phase four wire power system. The voltage of each phase can be adjusted separately rather than three phases at the same time. Therefore, the three- phase voltage can be controlled within a certain range to achieve the purpose of controlling three-phase balance.
The present disclosure changes the output voltage of the voltage regulating transformer by changing the size of the output signal rather than the connection mode of the transformer winding.
Since there is no mechanical contact and no arc will be generated, the service life is increased. Because only one group of excita- tion winding is required, the manufacturing process of the trans- former can be greatly simplified.
The above shows and describes the basic principle, main fea- tures and advantages of the present disclosure. Without departing from the spirit and scope of the present disclosure, the present disclosure also has various changes and improvements, which fall within the scope of the claimed present disclosure.

Claims (5)

CONCLUSIESCONCLUSIONS 1. Spanning regulerend apparaat voor een transformator op basis van vermogenselektronica technologie, omvattende een spanning re- gulerende transformator Tl, waarbij een spanningvoerend in- gangseinde L IN van een drukregelspoel in de spanning regulerende transformator is verbonden met een ingangseinde van een vermogens- transformator, een ingangseinde van een gelijkrichtschakeling en, respectievelijk, een ingangseinde van een synchrone detectiescha- keling; waarbij de gelijkrichtschakeling is verbonden met twee uiteinden van een secundaire spoel in de spanning regulerende transformator Tl via een respectievelijke stuurschakeling, en waarbij een stroomvoerende draaduitgang L OUT van de spanning re- gulerende spoel in de spanning regulerende transformator is ver- bonden met een ingangseinde van een feedback schakeling; waarbij een uitgangseinde van de synchrone detectieschakeling en een uit- gangseinde van de feedbackschakeling respectievelijk zijn verbon- den met een ingangseinde van een microcomputer met een enkele chip, en waarbij pulssignalen die worden uitgevoerd door de micro- computer met een enkele chip zijn verbonden met een besturingsein- de van de aandrijfschakeling.A voltage regulating device for a transformer based on power electronics technology, comprising a voltage regulating transformer T1, a voltage carrying input end L IN of a pressure regulating coil in the voltage regulating transformer being connected to an input end of a power transformer, an input end of a rectifier circuit and an input end of a synchronous detection circuit, respectively; wherein the rectifier circuit is connected to two ends of a secondary coil in the voltage regulating transformer T1 through a respective control circuit, and wherein a current-carrying wire output L OUT of the voltage regulating coil in the voltage regulating transformer is connected to an input end of a feedback circuit; wherein an output end of the synchronous detection circuit and an output end of the feedback circuit are respectively connected to an input end of a single-chip microcomputer, and pulse signals output from the single-chip microcomputer are connected to a control end of the drive circuit. 2. Spanning regulerend apparaat voor een transformator op basis van vermogenselektronica technologie, waarbij een AC- ingangsuiteinde van een bruggelijkrichter Dl in het gelijkricht- circuit respectievelijk is verbonden met het spanningvoerende in- gangseinde L IN en een neutrale lijningangseinde N; waarbij een positief gelijkstroomuiteinde van de gelijkrichter Dl respectieve- lijk is verbonden met een positieve elektrode van een condensator Cl, een collector van een IGBT-vermogensmodule Ql en een collector van een IGBT-vermogensmodule Q3 in de stuurschakeling; waarbij een negatief gelijkstroomuiteinde van de gelijkrichter D1 respectieve- lijk is verbonden met een negatieve elektrode van de condensator Cl, een emitter van de IGBT-vermogensmodule Q2 en een emitter van de IGBT-vermogensmodule Q4 in de stuurschakeling; waarbij een emitter van de IGBT-vermogensmodule Ql en een collector van deA voltage regulating device for a transformer based on power electronics technology, wherein an AC input end of a bridge rectifier D1 in the rectifier circuit is respectively connected to the live input end L IN and a neutral line input end N; wherein a positive DC end of the rectifier D1 is respectively connected to a positive electrode of a capacitor C1, a collector of an IGBT power module Q1 and a collector of an IGBT power module Q3 in the control circuit; a negative DC end of the rectifier D1 is respectively connected to a negative electrode of the capacitor C1, an emitter of the IGBT power module Q2 and an emitter of the IGBT power module Q4 in the driving circuit; where an emitter of the IGBT power module Q1 and a collector of the IGBT-vermogensmodule 92 in de stuurschakeling respectievelijk zijn verbonden met één uiteinde van de secundaire spoel in de spanning regulerende transformator Tl; en waarbij een emitter van de IGBT- vermogensmodule Q3 en een collector van IGBT-vermogensmodule Q4 in de stuurschakeling respectievelijk zijn verbonden met het andere uiteinde van de secundaire spoel in spanning regulerende transfor- mator Tl.IGBT power module 92 in the control circuit are respectively connected to one end of the secondary coil in the voltage regulating transformer T1; and wherein an emitter of the IGBT power module Q3 and a collector of IGBT power module Q4 in the driving circuit are respectively connected to the other end of the secondary coil in voltage regulating transformer T1. 3. Spanning regulerend apparaat voor een transformator op basis van vermogenselektronica technologie, waarbij de synchrone detec- tieschakeling een spanningstransformator T2 en een comparator U1B omvat, waarbij een uiteinde van een primaire spoel in de span- ningstransformator T2 is verbonden met het neutrale lijnin- gangseinde N via een weerstand Rl, en waarbij het andere uiteinde van de primaire spoel in de spanningstransformator T2 is verbonden met het stroomvoerende lijningangseinde L IN via een weerstand R2, waarbij het ene uiteinde van een secundaire spoel in de spannings- transformator T2 is verbonden met een inverterend ingangseinde van de comparator U1B via een weerstand R3, en waarbij het andere uit- einde van de secundaire spoel in de spanningstransformator T2 is verbonden met een in-fase ingangseinde van de comparator ULB via een weerstand R4.3. Voltage regulating device for a transformer based on power electronics technology, the synchronous detection circuit comprising a voltage transformer T2 and a comparator U1B, one end of a primary coil in the voltage transformer T2 being connected to the neutral line input end N through a resistor R1, and with the other end of the primary coil in the voltage transformer T2 connected to the current-carrying line input end L IN through a resistor R2, with one end of a secondary coil in the voltage transformer T2 connected to a inverting input end of the comparator U1B through a resistor R3, and the other end of the secondary coil in the voltage transformer T2 is connected to an in-phase input end of the comparator ULB through a resistor R4. 4. Spanning regulerend apparaat voor een transformator op basis van vermogenselektronica technologie, waarbij de feedbackschake- ling een spanningstransformator T3 en een comparator U2B omvat, waarbij één uiteinde van een primaire spoel in de spanningstrans- formator T3 is verbonden met het stroomvoerende lijnuitgangsui- teinde L OUT via een weerstand R5, waarbij het andere uiteinde van de primaire spoel in de spanningstransformator T3 is verbonden met het neutrale lijningangseinde N via een weerstand R6; waarbij het ene uiteinde van de secundaire spoel in spanningstransformator T3 is verbonden met een inverterend ingangseinde van de comparator U2B via een weerstand R7, en waarbij het andere uiteinde van de secundaire spoel in de spanningstransformator T3 is verbonden met een in-fase ingangseinde van de comparator U2B via een weerstand4. Voltage regulating device for a transformer based on power electronics technology, the feedback circuit comprising a voltage transformer T3 and a comparator U2B, one end of a primary coil in the voltage transformer T3 being connected to the current-carrying line output end L OUT through a resistor R5, the other end of the primary coil in the voltage transformer T3 being connected to the neutral line input end N through a resistor R6; one end of the secondary coil in voltage transformer T3 is connected to an inverting input end of the comparator U2B through a resistor R7, and the other end of the secondary coil in the voltage transformer T3 is connected to an in-phase input end of the comparator U2B through a resistor R8.R8. 5. Spanning regulerend apparaat voor een transformator op basis van vermogenselektronica technologie, waarbij een uitgangseinde van de comparator UlB in de synchrone detectieschakeling en een uitgangseinde van de comparator U2B in de feedbackschakeling res- pectievelijk zijn verbonden met een ingangseinde van een microcom- puter met één chip MPU, waarbij een timer is aangebracht op de mi- crocomputer met één chip MPU, en waarbij een uitvoeruiteinde van de microcomputer met één chip MPU respectievelijk is verbonden met poorten van de IGBT-vermogensmodule Ql, de IGBT-vermogensmodule Q2, de IGBT-vermogensmodule Q3 en de IGBT-vermogensmodule Q4 in de stuurschakeling.A voltage regulating device for a transformer based on power electronics technology, wherein an output end of the comparator U1B in the synchronous detection circuit and an output end of the comparator U2B in the feedback circuit are respectively connected to an input end of a microcomputer with one chip MPU, wherein a timer is provided on the microcomputer with one chip MPU, and an output end of the microcomputer with one chip MPU is respectively connected to ports of the IGBT power module Q1, the IGBT power module Q2, the IGBT power module power module Q3 and the IGBT power module Q4 in the control circuit.
NL2030729A 2022-01-26 2022-01-26 Transformer voltage regulating device based on power electronic technology NL2030729B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2030729A NL2030729B1 (en) 2022-01-26 2022-01-26 Transformer voltage regulating device based on power electronic technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2030729A NL2030729B1 (en) 2022-01-26 2022-01-26 Transformer voltage regulating device based on power electronic technology

Publications (1)

Publication Number Publication Date
NL2030729B1 true NL2030729B1 (en) 2023-08-07

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