CN108233750A - A kind of single-phase electricity die mould Z-source inverter - Google Patents

A kind of single-phase electricity die mould Z-source inverter Download PDF

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Publication number
CN108233750A
CN108233750A CN201810293259.8A CN201810293259A CN108233750A CN 108233750 A CN108233750 A CN 108233750A CN 201810293259 A CN201810293259 A CN 201810293259A CN 108233750 A CN108233750 A CN 108233750A
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CN
China
Prior art keywords
die mould
switch
diode
phase
source
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CN201810293259.8A
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Chinese (zh)
Inventor
张阳
程谆
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Hunan University of Technology
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Hunan University of Technology
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Priority to CN201810293259.8A priority Critical patent/CN108233750A/en
Publication of CN108233750A publication Critical patent/CN108233750A/en
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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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac 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
    • H02M7/537—Conversion of dc power input into ac 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, e.g. single switched pulse inverters
    • 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
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

The invention discloses a kind of single-phase electricity die mould Z-source inverter, including：Direct current input, impedance source network and single phase four switch inverter bridge leg；The direct current input is DC power supply or the DC terminal after AC/DC rectifications；The impedance source network includes inductance L1, inductance L2, inductance L3, capacitance C1, capacitance C2, diode D1, diode D2, diode D3 and diode D4；The single phase four switch inverter bridge leg includes active switch S1, active switch S2, active switch S3 and active switch S4.The present invention has the characteristics that voltage gain high, source of resistance network capacitance and single phase four switch inverter bridge leg voltage stress are small, in addition, when direct current input be can not control rectifier DC terminal when can also improve its input power factor.

Description

A kind of single-phase electricity die mould Z-source inverter
Technical field
The invention belongs to inversion transformation technique fields, and in particular to a kind of single-phase electricity die mould Z-source inverter.
Background technology
Compared with conventional voltage type PWM inverter, there is voltage-type Z-source inverter permission inverter bridge leg to lead directly to, single-stage The advantages such as control.Z-source inverter is just widely used in the fields such as generation of electricity by new energy, electric vehicle at the beginning of it is suggested, A kind of new thinking is provided to further improve system reliability and reducing system cost.However Conventional impedance source inventer is still There are many defects：1. boost capability is insufficient, it is difficult to the larger occasion of change range of input voltage be adapted to, in addition, relatively low liter Pressure energy power causes system to use compared with large modulation, so as to improve the voltage stress of inverter leg and source of resistance network capacitance； 2. when Z-source inverter front end using can not control rectifier when, the input power factor of converter plant is relatively low.Therefore, it is necessary to Design a kind of high voltage gain, high performance single-phase electricity die mould Z-source inverter.
Invention content
The defects of for described in background technology or deficiency, the present invention provides a kind of single-phase electricity die mould Z-source inverter, The inverter boost capability is strong, and reliability is high.
A kind of single-phase electricity die mould Z-source inverter, which is characterized in that including direct current input, impedance source network and single-phase four Switch inversion bridge arm.
The direct current input is DC power supply or the DC terminal after AC/DC rectifications.
The impedance source network includes inductance L1, inductance L2, inductance L3, capacitance C1, capacitance C2, diode D1, diode D2、 Diode D3With diode D4；
Diode D1Anode, diode D2Anode and inductance L1Current output terminal be mutually connected in A points, diode D1Cathode, Capacitance C1Anode and inductance L2Current input terminal be mutually connected in B points, diode D2Cathode, diode D3Anode, diode D4Anode and inductance L2Current output terminal be mutually connected in E points, diode D3Cathode, capacitance C2Anode and inductance L3Electric current Input terminal is mutually connected in F points, diode D4Cathode, inductance L3Current output terminal and single phase four switch inverter bridge leg public sun Pole is mutually connected in G points, capacitance C1Cathode, capacitance C2Cathode be mutually connected in M points with the common cathode of single phase four switch inverter bridge leg.
The single phase four switch inverter bridge leg includes active switch S1, active switch S2, active switch S3And active switch S4；
Active switch S1With active switch S3The bridge arm and active switch S being composed in series2With active switch S4The bridge arm being composed in series Parallel connection, the public anode of single phase four switch inverter bridge leg is G points, common cathode is M points, and ac output end is active switch S1With Active switch S3Midpoint H and active switch S2With active switch S4Midpoint K.
The anode of the direct current input is connected with the current input terminal of inductance L1, and the cathode of direct current input is connected with M points.
The working condition of Z-source inverter includes straight-through and non-straight-through two states；Wherein, single-phase electricity die mould source of resistance When inverter is in pass-through state, diode D1、D3Shutdown, diode D2、D4Conducting, single phase four switch inverter bridge leg are equivalent to Short circuit, at this point, inductance L1、L2、L3Charging, capacitance C1、C2Electric discharge；Single-phase electricity die mould Z-source inverter is in non-pass-through state When, diode D2、D4Shutdown, diode D1、D3Conducting, single phase four switch inverter bridge leg is equivalent to current source, at this point, inductance L1、 L2、L3Electric discharge, capacitance C1、C2Charging.
When Z-source inverter is in pass-through state, loop-voltage equation is
When Z-source inverter is in non-pass-through state, loop-voltage equation is
Wherein, viInput voltage for single phase four switch inverter bridge leg.
Association type (1), formula (2) are that zero can obtain by inductance both end voltage in a switch periods
Wherein, T be a switch periods, T0Pass-through state is in for single-phase electricity die mould Z-source inverter in a switch periods Time, T1The time of non-pass-through state, T are in for single-phase electricity die mould Z-source inverter in a switch periods0/ T is single-phase The straight-through duty ratio d of voltage-type Z-source inverter0。
The VC1、VC2、viIt can be calculated and obtained according to formula (3)
The viWhen being in non-pass-through state for single-phase electricity die mould Z-source inverter, single phase four switch inverter bridge leg it is defeated Enter instantaneous voltage, average value ViavIt can be calculated as
As it can be seen that the input voltage average value of single phase four switch inverter bridge leg is actually single-phase electricity die mould Z-source inverter electricity Hold C2The steady-state value of both end voltage.
The output voltage peak value of single-phase electricity die mould Z-source inverter is represented by
The present invention is had an advantage that compared with prior art：
(1) inverter is compared with Conventional impedance source inventer with higher sensitizing factor, suitable for input voltage variation more Big occasion；
(2) inverter is compared with Conventional impedance source inventer with lower source of resistance network capacitance voltage stress and inverter bridge Arm voltage stress has higher reliability；
(3) when the inverter is in pass-through state, input voltage is applied directly on source of resistance net inductive, when using uncontrollable whole The output voltage of stream device is as inverter when inputting, can not control rectifier with higher input power factor.
Description of the drawings
Fig. 1 is the single-phase electricity die mould Z-source inverter topology diagram that present example provides.
Fig. 2 is the equivalent circuit when single-phase electricity die mould Z-source inverter that present example provides is in pass-through state.
Fig. 3 is the equivalent electricity when single-phase electricity die mould Z-source inverter that present example provides is in non-pass-through state Road.
Specific embodiment
In order to more specifically describe the present invention, the present invention will be further described with reference to the accompanying drawings and examples.It should Work as understanding, specific embodiment described herein is only used for explaining the present invention, be not intended to limit the present invention.
As shown in Figure 1, a kind of single-phase electricity die mould Z-source inverter, including direct current input, impedance source network and single-phase four Switch inversion bridge arm.
Direct current input is DC power supply or the DC terminal after AC/DC rectifications.
Impedance source network includes inductance L1, inductance L2, inductance L3, capacitance C1, capacitance C2, diode D1, diode D2, two poles Pipe D3With diode D4；
Diode D1Anode, diode D2Anode and inductance L1Current output terminal be mutually connected in A points, diode D1Cathode, Capacitance C1Anode and inductance L2Current input terminal be mutually connected in B points, diode D2Cathode, diode D3Anode, diode D4Anode and inductance L2Current output terminal be mutually connected in E points, diode D3Cathode, capacitance C2Anode and inductance L3Electric current Input terminal is mutually connected in F points, diode D4Cathode, inductance L3Current output terminal and single phase four switch inverter bridge leg public sun Pole is mutually connected in G points, capacitance C1Cathode, capacitance C2Cathode be mutually connected in M points with the common cathode of single phase four switch inverter bridge leg.
Single phase four switch inverter bridge leg includes active switch S1, active switch S2, active switch S3With active switch S4；
Active switch S1With active switch S3The bridge arm and active switch S being composed in series2With active switch S4The bridge arm being composed in series Parallel connection, the public anode of single phase four switch inverter bridge leg is G points, common cathode is M points, and ac output end is active switch S1With Active switch S3Midpoint H and active switch S2With active switch S4Midpoint K.
The anode of direct current input is connected with the current input terminal of inductance L1, and the cathode of direct current input is connected with M points.
The working condition of Z-source inverter includes straight-through and non-straight-through two states；Wherein, single-phase electricity die mould source of resistance When inverter is in pass-through state, diode D1、D3Shutdown, diode D2、D4Conducting, single phase four switch inverter bridge leg are equivalent to Short circuit, at this point, inductance L1、L2、L3Charging, capacitance C1、C2When electric discharge, single-phase electricity die mould Z-source inverter are in pass-through state Equivalent circuit is as shown in Figure 2；When single-phase electricity die mould Z-source inverter is in non-pass-through state, diode D2、D4Shutdown, two poles Pipe D1、D3Conducting, single phase four switch inverter bridge leg is equivalent to current source, at this point, inductance L1、L2、L3Electric discharge, capacitance C1、C2Charging, Equivalent circuit when single-phase electricity die mould Z-source inverter is in non-pass-through state is as shown in Figure 3.
When Z-source inverter is in pass-through state, loop-voltage equation is
When Z-source inverter is in non-pass-through state, loop-voltage equation is
Wherein, viInput voltage for single phase four switch inverter bridge leg.
Association type (1), formula (2) are that zero can obtain by inductance both end voltage in a switch periods
Wherein, T be a switch periods, T0Pass-through state is in for single-phase electricity die mould Z-source inverter in a switch periods Time, T1The time of non-pass-through state, T are in for single-phase electricity die mould Z-source inverter in a switch periods0/ T is single-phase The straight-through duty ratio d of voltage-type Z-source inverter0。
The VC1、VC2、viIt can be calculated and obtained according to formula (3)
viWhen being in non-pass-through state for single-phase electricity die mould Z-source inverter, the input electricity of single phase four switch inverter bridge leg Press instantaneous value, average value ViavIt can be calculated as
As it can be seen that the input voltage average value of single phase four switch inverter bridge leg is actually single-phase electricity die mould Z-source inverter electricity Hold C2The steady-state value of both end voltage.
The output voltage peak value of single-phase electricity die mould Z-source inverter is represented by

Claims (12)

1. a kind of single-phase electricity die mould Z-source inverter, which is characterized in that including direct current input, impedance source network and single phase four Close inverter bridge leg.
2. a kind of single-phase electricity die mould Z-source inverter according to claim 1, which is characterized in that the direct current, which inputs, is DC power supply or the DC terminal after AC/DC rectifications.
A kind of 3. single-phase electricity die mould Z-source inverter according to claim 1, which is characterized in that the impedance source network Including inductance L1, inductance L2, inductance L3, capacitance C1, capacitance C2, diode D1, diode D2, diode D3With diode D4；
Diode D1Anode, diode D2Anode and inductance L1Current output terminal be mutually connected in A points, diode D1Cathode, Capacitance C1Anode and inductance L2Current input terminal be mutually connected in B points, diode D2Cathode, diode D3Anode, diode D4Anode and inductance L2Current output terminal be mutually connected in E points, diode D3Cathode, capacitance C2Anode and inductance L3Electric current Input terminal is mutually connected in F points, diode D4Cathode, inductance L3Current output terminal and single phase four switch inverter bridge leg public sun Pole is mutually connected in G points, capacitance C1Cathode, capacitance C2Cathode be mutually connected in M points with the common cathode of single phase four switch inverter bridge leg.
A kind of 4. single-phase electricity die mould Z-source inverter according to claim 1, which is characterized in that the single phase four switch Inverter bridge leg includes active switch S1, active switch S2, active switch S3With active switch S4；
Active switch S1With active switch S3The bridge arm and active switch S being composed in series2With active switch S4The bridge arm being composed in series Parallel connection, the public anode of single phase four switch inverter bridge leg is G points, common cathode is M points, and ac output end is active switch S1With Active switch S3Midpoint H and active switch S2With active switch S4Midpoint K.
5. a kind of single-phase electricity die mould Z-source inverter according to claim 1, which is characterized in that the direct current input Anode is connected with the current input terminal of inductance L1, and the cathode of direct current input is connected with M points.
A kind of 6. single-phase electricity die mould Z-source inverter according to claim 1, which is characterized in that the source of resistance inversion The working condition of device includes straight-through and non-straight-through two states；Wherein, single-phase electricity die mould Z-source inverter is in pass-through state When, diode D1、D3Shutdown, diode D2、D4Conducting, single phase four switch inverter bridge leg is equivalent to short circuit, at this point, inductance L1、L2、 L3Charging, capacitance C1、C2Electric discharge；When single-phase electricity die mould Z-source inverter is in non-pass-through state, diode D2、D4Shutdown, two Pole pipe D1、D3Conducting, single phase four switch inverter bridge leg is equivalent to current source, at this point, inductance L1、L2、L3Electric discharge, capacitance C1、C2It fills Electricity.
7. the working condition of single-phase electricity die mould Z-source inverter according to claim 6, which is characterized in that the impedance When source inventer is in pass-through state, loop-voltage equation is
(1)。
8. the working condition of single-phase electricity die mould Z-source inverter according to claim 6, which is characterized in that the impedance When source inventer is in non-pass-through state, loop-voltage equation is
(2)
Wherein, viInput voltage for single phase four switch inverter bridge leg.
9. the working condition of single-phase electricity die mould Z-source inverter according to claim 6, which is characterized in that association type (1), formula (2) are that zero can obtain by inductance both end voltage in a switch periods
(3)
Wherein, T be a switch periods, T0Pass-through state is in for single-phase electricity die mould Z-source inverter in a switch periods Time, T1The time of non-pass-through state, T are in for single-phase electricity die mould Z-source inverter in a switch periods0/ T is single-phase The straight-through duty ratio d of voltage-type Z-source inverter0。
10. according to claim 6, the working condition of single-phase electricity die mould Z-source inverter according to any one of claims 8, feature exists In the VC1、VC2、viIt can be calculated and obtained according to formula (3)
(4)。
11. the working condition of single-phase electricity die mould Z-source inverter according to claim 8, which is characterized in that the viFor When single-phase electricity die mould Z-source inverter is in non-pass-through state, the input voltage instantaneous value of single phase four switch inverter bridge leg, Average value ViavIt can be calculated as
(5)
As it can be seen that the input voltage average value of single phase four switch inverter bridge leg is actually single-phase electricity die mould Z-source inverter electricity Hold C2The steady-state value of both end voltage.
12. the working condition of single-phase electricity die mould Z-source inverter according to claim 6, which is characterized in that single-phase electricity The output voltage peak value of die mould Z-source inverter is represented by
(6)
Wherein,MFor the modulation ratio of single-phase electricity die mould Z-source inverter,For single-phase electricity die mould source of resistance inversion The sensitizing factor of device.
CN201810293259.8A 2018-04-04 2018-04-04 A kind of single-phase electricity die mould Z-source inverter Pending CN108233750A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI812530B (en) * 2022-05-27 2023-08-11 瑞鼎科技股份有限公司 Single inductor bipolar outputs (sibo) power converter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101267168A (en) * 2008-01-18 2008-09-17 南京航空航天大学 Z source reverser and soft start method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101267168A (en) * 2008-01-18 2008-09-17 南京航空航天大学 Z source reverser and soft start method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
S. LAALI ET AL.: "New hybrid quasi Z-source inverter based on diode-capacitor basic unit", 《INTERNATIONAL CONFERENCE ON ELECTRICAL AND ELECTRONICS ENGINEERING》 *
张阳 等: "一种新型半准Z源逆变器在风力发电变流系统中的应用", 《中国电机工程学报》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI812530B (en) * 2022-05-27 2023-08-11 瑞鼎科技股份有限公司 Single inductor bipolar outputs (sibo) power converter

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Application publication date: 20180629