CN1411132A - Lay loop current control type double dropping half bridge convertor - Google Patents
Lay loop current control type double dropping half bridge convertor Download PDFInfo
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- CN1411132A CN1411132A CN02138464A CN02138464A CN1411132A CN 1411132 A CN1411132 A CN 1411132A CN 02138464 A CN02138464 A CN 02138464A CN 02138464 A CN02138464 A CN 02138464A CN 1411132 A CN1411132 A CN 1411132A
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- 239000003990 capacitor Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 16
- 230000001939 inductive effect Effects 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 8
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 230000002459 sustained effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
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Abstract
A double dropping voltage half-bridge inverter relates to lag loop current control in which the main circuit is composed of two dropping voltage circuits, namely, power Vd1, power switch tube S1, filter inductor L1, filter capacitor C1 and continuous diode D1 to form a dropping voltage inversion circuit and the other inversion circuit is made up of power Vd2, power switch tube S2, filter inductor L2, filter capacitor C and continuous diode D2 which does not need any biased operation circuit to and reduce conductive loss of main circuit apparatus. Since this circuit applies nonlinear lag loop control and automatically adjust increasing switch frequency to limit high frequency ripple of inductance current in a definite loop width, this invention eliminates output voltage distortion resulted from continuous or discontinuous inductance current.
Description
Technical field:
Hysteresis current control type dual buck half bridge inverter of the present invention belongs to electronic power inverter.
Background technology:
Along with the development of high frequency power device, the switching frequency of inverter increases substantially, and has reduced the volume weight of filter, has improved dynamic response performance.The development of AC power such as airplane power source, ups system and high-performance motor-driven is all to the demands for higher performance of inverter.How further improving power density of transform, how to guarantee higher efficient when realizing high frequencyization, is the key issue of current research.Under higher switching frequency, switching loss is one of main loss, and soft switch technique can effectively reduce the switching loss of converter.The nearly more than ten years, around the soft switch problem of inverter, Chinese scholars has been done a large amount of research, has obtained many valuable achievements in research.Mainly contain utmost point resonance inverter, resonance DC high-frequency chain inverter (Resonant Dcink Inverter), resonance buffer network inverter (Resonant Snubber Lnverter) or the like.These soft switch techniques have obtained successful application in some specific occasion, but do not obtain all the time a kind of not only succinctly but also high-efficiency method.N。R。Zargari has proposed a kind of inverter circuit of high reliability, be called dual-buck Bi-Buck inverter circuit at this, it is made up of two Buck circuit, has overcome the straight-through problem of conventional bridge inverter bridge, be particularly useful for Aero-Space, the application that ups system etc. are high to reliability requirement.GerldR.Sesnley successfully is applied to power amplifier with it, under the HF switch frequency (ZookHz), has eliminated Dead Time to the output voltage waveforms quality influence.But the control method that is adopted based on slope SPWM relatively, is to guarantee the circuit operate as normal all, and output voltage can distortion just must not have bias current owing to inductive current is interrupted when underloading, so influences system effectiveness.
Summary of the invention:
The objective of the invention is at the deficiencies in the prior art, from the frequency of raising inverter and the angle of efficient, develop that a kind of to eliminate when operate as normal necessary bias current and inductive current interrupted and the voltage distortion that causes is realized the dual-buck inverter (BBI) that inverter moves under greater efficiency and frequency.For achieving the above object, the composition of hysteresis current control type dual-buck of the present invention (BUCK) converter main circuit is made up of two bucks (BUCK) circuit, when inverter filter inductance output forward current, by two mutually the power positive ends of one of series connection power supplys be connected in successively power switch pipe, filter inductance, filter capacitor with and negative electrode be connected in power switch pipe (S
1) and filter inductance (L
1) tie point, and anode is connected in the fly-wheel diode of another power supply negative terminal and forms the output of BUCK circuit modulated filter; During filter inductance output negative current, be connected in another power switch pipe successively by another power supply negative terminal, another filter inductance and same filter capacitor with and anode be connected in another power switch pipe (S
2) and another filter capacitor (L
2) tie point, and negative electrode is connected in the fly-wheel diode of power positive end and forms BUCK circuit modulation output.The composition of this main circuit, realized that this pair falls the formula inverter in one-period, a buck converter modulated filter output, the idle working method by turns of another buck converter, reached without any need for the offset operation electric current just can operate as normal purpose, thereby reduced the conduction loss of main circuit devices such as power tube and inductance.
This main circuit is also owing to two filter inductances of connecting between two power switch pipes, the straight-through problem that does not have traditional inverter bridge, improved reliability greatly, in addition, freewheel current flows through independently fly-wheel diode, power switch pipe and fly-wheel diode can be optimized design respectively, and diode very big reverse recovery current can not occur, have avoided causing very big switching loss.
The control method of this main circuit adopts the very strong nonlinear control method of adaptivity---hysteresis current control, promptly at the interrupted section of inductive current, automatically adjust and improve switching frequency, the high frequency ripple of inductive current is limited in the ring width of appointment, substantially eliminated the output voltage distortion phenomenon that intermittently causes because of inductive current, this is that linear control method can't be accomplished under identical main circuit parameter and switching frequency, and has overcome on control method and introduce the output voltage that direct current biasing causes and have the DC component problem.Dual-buck inverter circuit under the high frequency operation has the system frequency bandwidth of broad, Fast Dynamic response performance, high stable, series of advantages such as high voltage regulation.
Description of drawings
Fig. 1 is the main circuit schematic diagram of hysteresis current control type dual buck half bridge inverter.
Designation among the figure: Vd
1, Vd
2---power supply, S
1, S
2---power switch pipe, L
1, L
2---filter inductance, D
1, D
2---fly-wheel diode, C---filter capacitor.
Fig. 2 is a hysteresis current control type dual buck half bridge inverter current loop control schematic diagram.
Figure center figure title: 1, inductance L
1Current detecting, 2, voltage error signal, 3, inductance L
2Current detecting, 4,5---hysteresis comparator, 6,7---drive circuit, 8, power switch tube S
1, 9, power switch tube S
2
Fig. 3 is the enforcement circuit theory diagrams of band current-control type dual buck half bridge inverter.
Label among Fig. 3 and designation are consistent with Fig. 1 and Fig. 2, and wherein label 10 is voltage given benchmark, and 11, output voltage control signal, 12 and 13 is current transformers.
Embodiment
Narrate the specific embodiment of the present invention with reference to the accompanying drawings.As shown in Figure 1, hysteresis current control type dual-buck of the present invention (BUCK) half-bridge inverter main circuit is made up of two bucks (BUCK) circuit, when inverter output forward current, by power supply Vd
1Output plus terminal is connected in power switch tube S successively
1, filter inductance L
1, filter capacitor C with and anode and power supply Vd
2Negative terminal links to each other, and negative electrode is connected in power switch tube S
1With filter inductance L
1The sustained diode of tie point
1The modulated filter output circuit of forming the BUCK circuit; During the output negative current, by power supply Vd
2The output negative terminal is connected in power switch tube S
2, filter inductance L
2, filter capacitor C with and anode be connected in power switch tube S
2With filter inductance L
2Tie point, negative electrode is connected in power supply Vd
1The sustained diode of anode
2The modification output circuit of forming the BUCK circuit.As shown in Figure 1, because two power switch tube S
1, S
2Between two the filter inductance L that connecting
1, L
2, therefore there is not the straight-through problem of traditional inverter bridge, improved reliability greatly.In addition, freewheel current flows through independently sustained diode
1, D
2, so power switch pipe and fly-wheel diode can obtain optimal design respectively, and fly-wheel diode can adopt fast recovery diode, and the loss that is caused by reverse recovery current just significantly reduces like this.
Fig. 2 is a hysteresis current control type dual buck half bridge inverter current loop control schematic diagram.Hysteresis current control is a kind of superior nonlinear control method, realizes that circuit is simple, and stability is high, has inherent electric current limitation capability, and dynamic response is fast.Its basic principle is to adopt voltage and current double closed-loop, and outer voltage realizes stable control, the control mechanism of current inner loop as shown in Figure 2, i.e. filter inductance L
1The signal of current detecting 1 passes through drive circuit 6 power controlling switching tube (S behind hysteresis comparator 4
1) 8; Equally, filter inductance L
2The signal of current detecting 3 is controlled another power switch pipe (S by another drive circuit 7 behind another hysteresis comparator 5
2) 9.Wherein voltage error signal is sent into hysteresis comparator 4 and hysteresis comparator 5 respectively.The course of work of this control method is that two filter inductance electric currents of FEEDBACK CONTROL make power switch tube S when inverter output forward current respectively
1, sustained diode
1, filter inductance L
1Form modulated filter output with filter capacitor C, by hysteresis current control, make inductance L simultaneously
1Electric current in the ring width of setting, power switch tube S
2, sustained diode
2Do not work filter inductance L
2Electric current be zero; Otherwise power switch tube S
1, sustained diode
1, filter inductance L
1Do not work power switch tube S
2, sustained diode
2, filter inductance L
2Work.
Fig. 3 is the embodiments of the invention circuit theory diagrams.As shown in Figure 3, by current transformer 12 with inductance L
1Current detection signal 1 is connected in hysteresis comparator 4 and is connected in power switch tube S through drive circuit 6
18; The same current transformer 13 that passes through is with inductance L
2Current detection signal 3 is connected in hysteresis comparator 5 and is connected in power switch tube S through drive circuit 7
19; Voltage sense signal 11 is connected in voltage error amplifier 2 negative terminals, voltage given reference signal 10 input voltage error amplifiers 2 anodes.Operation principle is to adopt voltage and current double closed-loop.Outer voltage plays pressure stabilization function, and voltage sense signal 11 through voltage error amplifier 2, obtains voltage error signal after comparing with reference voltage sinusoidal wave 10.Voltage error signal is as the benchmark of electric current loop, respectively with the control inductance L
1With L
2Sensed current signal relatively, than controller 4 and 5, generation PWM modulation signal is delivered to power switch tube S through drive circuit 6 and 7 through two stagnant chain rates
1And S
2, the control inductance L
1And L
2Electric current respectively output the cycle half cycle work.Control circuit electric current high frequency ripple guarantees less output harmonic wave content in the ring width scope of appointment simultaneously.Therefore hysteresis current control has very strong adaptive ability, at the less section of inductive current, adjusts automatically and improves the switching tube frequency, eliminates the output voltage distortion that the inductive current intermittent current causes, this point is that linear control method can't realize.
Claims (2)
1, a kind of hysteresis current control type dual buck half bridge inverter main circuit is made up of two buck circuits, it is characterized in that, when inverter bridge output forward current, is connected in power switch pipe (S successively by two mutual positive sources of connecting one of power supplys
1), filter inductance (L
1), filter capacitor (C) with and negative electrode be connected in power switch pipe (S
1) and filter inductance (L
1) tie point, and anode is connected in the fly-wheel diode (D of another power cathode
1) the modulated filter output of the buck circuit formed; During the output negative current, be connected in another power switch pipe (S successively by another power cathode
2), another filter inductance (L
2) and same filter capacitor (C) and anode be connected in another power switch pipe (S
2) and another filter inductance (L
2) tie point, and negative electrode is connected in the fly-wheel diode (D of positive source
2) another buck circuit modulated filter output of forming, be formed on a loaded work piece in the cycle, a buck converter modulated filter output, the idle working method by turns of another buck converter, the control method of this main circuit adopts self adaptive very strong non-linear method for controlling hysteresis loop current, promptly, adjust automatically and improve switching frequency, the high frequency ripple restriction of inductive current is gone up in the ring width of appointment at the interrupted section of inductive current.
2,, it is characterized in that method for controlling hysteresis loop current is with filter inductance (L according to the described hysteresis current control type of claim 1 dual buck half bridge inverter
1) signal of current detecting (1) behind hysteresis comparator (4) by drive circuit (6) power controlling switching tube (S
1); Equally with another filter inductance (L
2) signal of current detecting (3) controls another power switch pipe (S by another drive circuit (7) behind another hysteresis comparator (5)
2), wherein voltage error signal (2) is sent into hysteresis comparator (4) and hysteresis comparator (5) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021384649A CN1195349C (en) | 2002-10-21 | 2002-10-21 | Lay loop current control type double dropping half bridge convertor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021384649A CN1195349C (en) | 2002-10-21 | 2002-10-21 | Lay loop current control type double dropping half bridge convertor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1411132A true CN1411132A (en) | 2003-04-16 |
| CN1195349C CN1195349C (en) | 2005-03-30 |
Family
ID=4749499
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021384649A Expired - Fee Related CN1195349C (en) | 2002-10-21 | 2002-10-21 | Lay loop current control type double dropping half bridge convertor |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384072C (en) * | 2004-07-01 | 2008-04-23 | 南京航空航天大学 | Double output double step-down type half bridge inverter, and control and modulation method |
| CN100413200C (en) * | 2005-03-10 | 2008-08-20 | 上海交通大学 | Counter control current tracking control method based on average current compensation |
| CN100431255C (en) * | 2003-05-12 | 2008-11-05 | 南京航空航天大学 | Main circuit topology of tri-electrical-level double-dropping type semi-bridge inverter and control method thereof |
| CN100438303C (en) * | 2006-10-20 | 2008-11-26 | 南京航空航天大学 | Five-level double step-down full bridge inverter |
| CN100456615C (en) * | 2004-11-17 | 2009-01-28 | 力博特公司 | Inverting circuit and method |
| CN100596011C (en) * | 2007-10-29 | 2010-03-24 | 南京航空航天大学 | Coupling inductance dual-buck full bridge inverter |
| CN1929278B (en) * | 2006-08-16 | 2010-05-12 | 南京航空航天大学 | Cascading multiple electrical level double decompression semi-bridge converter |
| CN101578561B (en) * | 2007-06-08 | 2012-06-27 | 松下电器产业株式会社 | High-speed reset circuit |
| CN102647085A (en) * | 2011-02-18 | 2012-08-22 | 英特赛尔美国股份有限公司 | System and method for improving regulation accuracy of switch mode regulator during dcm |
| CN103138615A (en) * | 2013-02-20 | 2013-06-05 | 丁晓东 | Direct current (DC)/alternating current (AC) converter based on buck circuit |
| CN104201918A (en) * | 2014-08-13 | 2014-12-10 | 南京航空航天大学 | Dual-buck bridge arm full-bridge inverter |
| CN104539187A (en) * | 2014-12-01 | 2015-04-22 | 东北电力大学 | Novel active front-end controller topological structure |
| CN104201918B (en) * | 2014-08-13 | 2017-01-04 | 南京航空航天大学 | A kind of double buck brachium pontis full-bridge inverter |
| CN108418452A (en) * | 2018-03-20 | 2018-08-17 | 盐城工学院 | A kind of leakage current photovoltaic combining inverter and its control method |
| CN108418453A (en) * | 2018-03-20 | 2018-08-17 | 盐城工学院 | A kind of photovoltaic combining inverter and its control method |
| CN109088542A (en) * | 2018-11-05 | 2018-12-25 | 江苏工程职业技术学院 | A kind of combined bidirectional DC transfer circuit |
| CN109085784A (en) * | 2018-08-21 | 2018-12-25 | 中车株洲电力机车有限公司 | A kind of capacitor control circuit and a kind of electromagnetic type vacuum circuit breaker control system |
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| CN100405733C (en) * | 2006-05-22 | 2008-07-23 | 南京航空航天大学 | Method and circuit for controlling changing cyclic width lag cyclic current of inventer |
| CN100459402C (en) * | 2007-01-15 | 2009-02-04 | 南京航空航天大学 | Three level double voltage reducing type semi-bridge converter |
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2002
- 2002-10-21 CN CNB021384649A patent/CN1195349C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100431255C (en) * | 2003-05-12 | 2008-11-05 | 南京航空航天大学 | Main circuit topology of tri-electrical-level double-dropping type semi-bridge inverter and control method thereof |
| CN100384072C (en) * | 2004-07-01 | 2008-04-23 | 南京航空航天大学 | Double output double step-down type half bridge inverter, and control and modulation method |
| CN100456615C (en) * | 2004-11-17 | 2009-01-28 | 力博特公司 | Inverting circuit and method |
| CN100413200C (en) * | 2005-03-10 | 2008-08-20 | 上海交通大学 | Counter control current tracking control method based on average current compensation |
| CN1929278B (en) * | 2006-08-16 | 2010-05-12 | 南京航空航天大学 | Cascading multiple electrical level double decompression semi-bridge converter |
| CN100438303C (en) * | 2006-10-20 | 2008-11-26 | 南京航空航天大学 | Five-level double step-down full bridge inverter |
| CN101578561B (en) * | 2007-06-08 | 2012-06-27 | 松下电器产业株式会社 | High-speed reset circuit |
| CN100596011C (en) * | 2007-10-29 | 2010-03-24 | 南京航空航天大学 | Coupling inductance dual-buck full bridge inverter |
| CN102647085A (en) * | 2011-02-18 | 2012-08-22 | 英特赛尔美国股份有限公司 | System and method for improving regulation accuracy of switch mode regulator during dcm |
| CN103138615A (en) * | 2013-02-20 | 2013-06-05 | 丁晓东 | Direct current (DC)/alternating current (AC) converter based on buck circuit |
| CN104201918A (en) * | 2014-08-13 | 2014-12-10 | 南京航空航天大学 | Dual-buck bridge arm full-bridge inverter |
| CN104201918B (en) * | 2014-08-13 | 2017-01-04 | 南京航空航天大学 | A kind of double buck brachium pontis full-bridge inverter |
| CN104539187A (en) * | 2014-12-01 | 2015-04-22 | 东北电力大学 | Novel active front-end controller topological structure |
| CN108418452A (en) * | 2018-03-20 | 2018-08-17 | 盐城工学院 | A kind of leakage current photovoltaic combining inverter and its control method |
| CN108418453A (en) * | 2018-03-20 | 2018-08-17 | 盐城工学院 | A kind of photovoltaic combining inverter and its control method |
| CN109085784A (en) * | 2018-08-21 | 2018-12-25 | 中车株洲电力机车有限公司 | A kind of capacitor control circuit and a kind of electromagnetic type vacuum circuit breaker control system |
| CN109088542A (en) * | 2018-11-05 | 2018-12-25 | 江苏工程职业技术学院 | A kind of combined bidirectional DC transfer circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1195349C (en) | 2005-03-30 |
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