CN203339962U - Switched-capacitor type AC voltage regulator - Google Patents

Switched-capacitor type AC voltage regulator Download PDF

Info

Publication number
CN203339962U
CN203339962U CN201320403196XU CN201320403196U CN203339962U CN 203339962 U CN203339962 U CN 203339962U CN 201320403196X U CN201320403196X U CN 201320403196XU CN 201320403196 U CN201320403196 U CN 201320403196U CN 203339962 U CN203339962 U CN 203339962U
Authority
CN
China
Prior art keywords
diode
bidirectional switch
switch pipe
anode
negative electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320403196XU
Other languages
Chinese (zh)
Inventor
王忠阁
蔡慧
汪伟
郭育
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Jiliang University
Original Assignee
China Jiliang University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Jiliang University filed Critical China Jiliang University
Priority to CN201320403196XU priority Critical patent/CN203339962U/en
Application granted granted Critical
Publication of CN203339962U publication Critical patent/CN203339962U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model provides a switched-capacitor type AC voltage regulator and belongs to the technical field of power electronic conversion. The switched-capacitor type AC voltage regulator is composed of an AC voltage source, a first bidirectional switch tube, a second bidirectional switch tube, a third bidirectional switch tube, a fourth bidirectional switch tube (5), a first capacitor, a second capacitor, a third capacitor and an output terminal; and the switched-capacitor type AC voltage regulator is a typical nonmagnetic element voltage regulator. The capacitors are mainly energy storage elements, duty ratios of driving signals are adjusted to control charge and discharge time of the capacitors, so electrical energy conversion is achieved. No magnetic element is contained, so the switched-capacitor type AC voltage regulator has the advantages of small size, light weight, high power density and the like; and the switched-capacitor type AC voltage regulator also has the advantages of small equivalent internal resistance, high power supply efficiency and high practicality.

Description

A kind of switching capacity type AC voltage regulator
Technical field
The utility model relates to a kind of switching capacity type AC voltage regulator, belongs to the technical field of Technics of Power Electronic Conversion.
Background technology
AC voltage regulator is the converting means that a kind of alternating current changes into another kind of alternating current, by changing the amplitude of alternating current, realizes to Alternating Current Power Supply load supplying or grid-connected with AC network.It,, as very important part of field of power electronics, gets more and more people's extensive concerning always.By adopting two-way power switch, can realize the alternating-current bidirectional power conversion.
Switching capacity type AC voltage regulator is a kind of typical noninductive converter, it is that the power switch of electric capacity and some is combined, discharging and recharging by the control to power switch of electric capacity realizes, realized the circuit of different no-load voltage ratios by the combination of electric capacity and power switch.Therefore owing to not containing magnetic element, have that volume is little, lightweight, the power density advantages of higher.
Summary of the invention
The purpose of this utility model is to provide a kind of switching capacity type AC voltage regulator.
The technical solution adopted in the utility model is:
A kind of switching capacity type AC voltage regulator, its input is connected with alternating-current voltage source, and output is connected with load circuit, and main circuit is by capacitor C 1, C 2, C 3with bidirectional switch pipe M 1, M 2, M 3, M 4form input voltage source u ipositive pole and the first bidirectional switch pipe M 1input connect, the first bidirectional switch pipe M 1output and the second bidirectional switch pipe M 2input connect, the second bidirectional switch pipe M 2output and the 3rd bidirectional switch pipe M 3input connect, the 3rd bidirectional switch pipe M 3output and the 4th bidirectional switch pipe M 4input connect, the 4th bidirectional switch pipe M 4output and input power u inegative pole connect, the first capacitor C 1be connected in parallel on the second bidirectional switch pipe M 2input and the 3rd bidirectional switch pipe M 3output, the second Capacitance parallel connection is at the first bidirectional switch pipe M 1input and the second bidirectional switch pipe M 2output, the 3rd capacitor C 3be connected in parallel on the 3rd bidirectional switch pipe M 3input and the 4th bidirectional switch pipe M 4output, load resistance R 0be connected in parallel on the 3rd capacitor C 3two ends, the first bidirectional switch pipe M 1by diode D 11negative electrode meet diode D 12negative electrode, diode D 12anode meet diode D 14negative electrode, diode D 14anode meet diode D 13anode, diode D 13negative electrode meet diode D 11anode, power tube S 1drain electrode meet diode D 11negative electrode, power tube S 1source electrode meet diode D 13anode form, the second bidirectional switch pipe M 2by diode D 21negative electrode meet diode D 22negative electrode, diode D 22anode meet diode D 24negative electrode, diode D 24anode meet diode D 23anode, diode D 23negative electrode meet diode D 21anode, power tube S 2drain electrode meet diode D 21negative electrode, power tube S 2source electrode meet diode D 23anode form, the 3rd bidirectional switch pipe M 3by diode D 31negative electrode meet diode D 32negative electrode, diode D 32anode meet diode D 34negative electrode, diode D 34anode meet diode D 33anode, diode D 33negative electrode meet diode D 31anode, power tube S 3drain electrode meet diode D 31negative electrode, power tube S 3source electrode meet diode D 33anode form, the 4th bidirectional switch pipe M 4by diode D 41negative electrode meet diode D 42negative electrode, diode D 42anode meet diode D 44negative electrode, diode D 44anode meet diode D 43anode, diode D 43negative electrode meet diode D 41anode, power tube S 4drain electrode meet diode D 41negative electrode, power tube S 4source electrode meet diode D 43anode form.Drive circuit provides power tube S 1, S 2, S 3, S 4needed driving signal, circuit topological structure is buck converter, in main circuit, the voltage at each electric capacity and bidirectional switch pipe two ends equals 1/2 of input voltage, and does not contain DC component, can realize fixed voltage no-load voltage ratio 1/2.
The present invention adopts technique scheme, has following beneficial effect:
(1) the fixed voltage no-load voltage ratio of voltage regulator is 1/2.
(2) electric capacity, as energy-storage travelling wave tube, does not contain magnetic element, has reduced electromagnetic interference, has improved the useful life of voltage regulator.
(3) volume and weight of voltage regulator reduces greatly, has improved the efficiency of power density and voltage regulator.
The accompanying drawing explanation
Fig. 1 is a kind of switching capacity type of the utility model AC voltage regulator main circuit topology figure
Fig. 2 is the utility model single tube bidirectional electronic switch
Fig. 3 is the utility model drive signal waveform figure
Number in the figure explanation: u ifor alternating-current voltage source; C 1, C 2, C 3be respectively first, second, third electric capacity; M 1, M 2, M 3, M 4be respectively first, second, third, fourth bidirectional switch pipe; R 0for load resistance; u ofor output voltage; The first bidirectional switch pipe M 1by diode D 11, D 12, D 13, D 14with power tube S 1combine; The second bidirectional switch pipe M 2by diode D 21, D 22, D 23, D 24with power tube S 2combine; The 3rd bidirectional switch pipe M 3by diode D 31, D 32, D 33, D 34with power tube S 3combine; The 4th bidirectional switch pipe M 4by diode D 41, D 42, D 43, D 44with power tube S 4combine; The duty ratio that D is the PWM ripple; T sswitch periods for power tube.
Embodiment
Technical scheme below in conjunction with accompanying drawing to utility model is elaborated:
As shown in Figure 1, a kind of switching capacity type AC voltage regulator, can realize u o=1/2u i.Containing 4 bidirectional switch pipes in main circuit is respectively M 1, M 2, M 3, M 4, 3 electric capacity are respectively C 1, C 2, C 3.Output resistance R othe voltage u at two ends ofor the output voltage of this switching capacity type AC voltage regulator, capacitor C 1maintain capacitor C 2and capacitor C 3the balance of voltage at two ends.In whole voltage cycle, the voltage at each electric capacity and bidirectional switch pipe two ends all equals 1/2 of input voltage.
In a switch periods, voltage regulator has two kinds of operating states, take the input voltage positive half period as example, and operating state is described below:
First state: bidirectional switch pipe M 1, M 3closure, bidirectional switch pipe M 2, M 4disconnect.In this state, capacitor C 1charging.At first, capacitor C 2electric discharge, capacitor C 3charging, until the electric current in circuit is reduced to zero.Capacitor C 2start charging, capacitor C 3start electric discharge until this state finishes.In this whole state procedure, capacitor C 1charging always, electric energy is by input power u ibe transferred to circuit.When this state finishes, bidirectional switch pipe M 1, M 3disconnect bidirectional switch pipe M 2, M 4closed.
Second state: bidirectional switch pipe M 1, M 3disconnect bidirectional switch pipe M 2, M 4closed.At first, circuit by delivery of electrical energy to input power u i.Under this state, capacitor C 1electric discharge.Capacitor C 2charging, capacitor C 3electric discharge, until the electric current in circuit is reduced to zero, now electric energy is by input power u ibe transferred to circuit.Capacitor C 2start electric discharge, capacitor C 3start charging, until this state finishes.In this whole state procedure, capacitor C 1electric discharge always.When this state finishes, bidirectional switch pipe M 1, M 3closure, bidirectional switch pipe M 2, M 4disconnect.
After second state finishes, new switch periods is from the first state.
At the negative half-cycle of input voltage source, voltage regulator has similar operating state, and just sense of current is contrary.
In sum, a kind of switching capacity type AC voltage regulator described in the utility model, only using electric capacity as energy-storage travelling wave tube, drive conducting and the shutoff of signal controlling power switch pipe, thereby the time that discharges and recharges of control capacitance, the fixedly no-load voltage ratio that has realized input and output voltage is 1/2, has reduced the volume of voltage regulator, has improved the power density of voltage regulator.

Claims (4)

1. a switching capacity type AC voltage regulator, its input is connected with alternating-current voltage source, and output is connected with load circuit, and main circuit is by capacitor C 1, C 2, C 3with bidirectional switch pipe M 1, M 2, M 3, M 4form input voltage source u ipositive pole and the first bidirectional switch pipe M 1input connect, the first bidirectional switch pipe M 1output and the second bidirectional switch pipe M 2input connect, the second bidirectional switch pipe M 2output and the 3rd bidirectional switch pipe M 3input connect, the 3rd bidirectional switch pipe M 3output and the 4th bidirectional switch pipe M 4input connect, the 4th bidirectional switch pipe M 4output and input voltage source u inegative pole connect, the first capacitor C 1be connected in parallel on the second bidirectional switch pipe M 2input and the 3rd bidirectional switch pipe M 3output, the second Capacitance parallel connection is at the first bidirectional switch pipe M 1input and the second bidirectional switch pipe M 2output, the 3rd capacitor C 3be connected in parallel on the 3rd bidirectional switch pipe M 3input and the 4th bidirectional switch pipe M 4output, load resistance R 0be connected in parallel on the 3rd capacitor C 3two ends, the first bidirectional switch pipe M 1by diode D 11negative electrode meet diode D 12negative electrode, diode D 12anode meet diode D 14negative electrode, diode D 14anode meet diode D 13anode, diode D 13negative electrode meet diode D 11anode, power tube S 1drain electrode meet diode D 11negative electrode, power tube S 1source electrode meet diode D 13anode form, the second bidirectional switch pipe M 2by diode D 21negative electrode meet diode D 22negative electrode, diode D 22anode meet diode D 24negative electrode, diode D 24anode meet diode D 23anode, diode D 23negative electrode meet diode D 21anode, power tube S 2drain electrode meet diode D 21negative electrode, power tube S 2source electrode meet diode D 23anode form, the 3rd bidirectional switch pipe M 3by diode D 31negative electrode meet diode D 32negative electrode, diode D 32anode meet diode D 34negative electrode, diode D 34anode meet diode D 33anode, diode D 33negative electrode meet diode D 31anode, power tube S 3drain electrode meet diode D 31negative electrode, power tube S 3source electrode meet diode D 33anode form, the 4th bidirectional switch pipe M 4by diode D 41negative electrode meet diode D 42negative electrode, diode D 42anode meet diode D 44negative electrode, diode D 44anode meet diode D 43anode, diode D 43negative electrode meet diode D 41anode, power tube S 4drain electrode meet diode D 41negative electrode, power tube S 4source electrode meet diode D 43anode form.
2. a kind of switching capacity type AC voltage regulator according to claim 1, it is characterized in that: main circuit topological structure is simple, can realize the AC voltage adjusting function, in main circuit, the voltage at each electric capacity and bidirectional switch pipe two ends equals 1/2 of input voltage, and do not contain DC component, the voltage at output resistance two ends equals 1/2 of input voltage.
3. a kind of switching capacity type AC voltage regulator according to claim 1, it is characterized in that: drive circuit provides driving power switching tube S 1, S 2, S 3, S 4pwm signal, switching frequency is 100kHz, duty ratio D=0.5.
4. a kind of switching capacity type AC voltage regulator according to claim 1 is characterized in that: described power switch pipe is the NMOS pipe.
CN201320403196XU 2013-07-02 2013-07-02 Switched-capacitor type AC voltage regulator Expired - Fee Related CN203339962U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320403196XU CN203339962U (en) 2013-07-02 2013-07-02 Switched-capacitor type AC voltage regulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320403196XU CN203339962U (en) 2013-07-02 2013-07-02 Switched-capacitor type AC voltage regulator

Publications (1)

Publication Number Publication Date
CN203339962U true CN203339962U (en) 2013-12-11

Family

ID=49708615

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320403196XU Expired - Fee Related CN203339962U (en) 2013-07-02 2013-07-02 Switched-capacitor type AC voltage regulator

Country Status (1)

Country Link
CN (1) CN203339962U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104052307A (en) * 2014-06-17 2014-09-17 厦门大学 Bridge type modular multi-level two-way switched capacitor alternating current-alternating current converter
CN104852595A (en) * 2015-05-31 2015-08-19 厦门大学 Bridge modular multilevel switched capacitor AC-AC converter commutation method
CN105305838A (en) * 2015-12-02 2016-02-03 梁正 Capacitor voltage division type alternating current voltage regulator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104052307A (en) * 2014-06-17 2014-09-17 厦门大学 Bridge type modular multi-level two-way switched capacitor alternating current-alternating current converter
CN104052307B (en) * 2014-06-17 2017-06-30 厦门大学 A kind of bridge type modular multi-level two-way switch electric capacity AC-AC Conversion device
CN104852595A (en) * 2015-05-31 2015-08-19 厦门大学 Bridge modular multilevel switched capacitor AC-AC converter commutation method
CN105305838A (en) * 2015-12-02 2016-02-03 梁正 Capacitor voltage division type alternating current voltage regulator
CN105305838B (en) * 2015-12-02 2017-11-28 浙江金冠特种变压器有限公司 A kind of capacitance-voltage-distributing type AC voltage regulator

Similar Documents

Publication Publication Date Title
Wu et al. A new hybrid boosting converter for renewable energy applications
CN105958816B (en) A kind of multiple-unit diode capacitance network and coupling inductance high-gain DC converter
CN103580501B (en) The diverter switch capacitor type AC-AC converter of fixing no-load voltage ratio 1/4 or 4
CN104052307B (en) A kind of bridge type modular multi-level two-way switch electric capacity AC-AC Conversion device
CN207269198U (en) A kind of high-gain Double-input direct-current converter based on capacitance series parallel structure
CN103762873B (en) Based on the high frequency isolation type three-level inverter of Boost
CN107919797B (en) Wide input range interleaving parallel connection type high-efficiency boost direct-current converter for fuel cell
CN102594134A (en) Single-switch and high-gain BOOST converter
CN105939107A (en) Hybrid type quasi-switch voltage-boosting DC-DC converter
CN106160464B (en) Reduce the power-supply system of output ripple
CN105939108A (en) Switch inductor type quasi-switch voltage-boosting DC-DC converter
CN203339962U (en) Switched-capacitor type AC voltage regulator
CN104270085A (en) DC/DC conversion circuit in solar photovoltaic power generation system
CN109672332A (en) A kind of zero ripple DC-DC converter of single tube high-gain
CN205847090U (en) A kind of mixed type quasi-boost switching DC DC changer
Shen et al. Charge equalization using multiple winding magnetic model for lithium-ion battery string
CN203339952U (en) Switched-capacitor AC-AC converter
CN102647083B (en) Boost two-way voltage balance converter
CN202121514U (en) Single-phase inverter capable of eliminating direct current input terminal ripple and solar photovoltaic power generation system
CN204681289U (en) Solar power supply apparatus
CN204179950U (en) A kind of 2-3 type multiple no-load voltage ratio switching capacity type AC-AC converter
CN204538975U (en) Realize the switching capacity type AC-AC converter of 1/N and derivative no-load voltage ratio thereof
CN203859551U (en) Z-source energy-storage AC controller
Tang et al. A bidirectional contactless power transfer system with dual-side power flow control
CN103208925B (en) Isolated direct current-direct current (DC-DC) converter topological circuit

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131211

Termination date: 20160702

CF01 Termination of patent right due to non-payment of annual fee