CN103312154B - A kind of tandem multi input coupling inductance buck-boost converter - Google Patents

A kind of tandem multi input coupling inductance buck-boost converter Download PDF

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Publication number
CN103312154B
CN103312154B CN201210063261.9A CN201210063261A CN103312154B CN 103312154 B CN103312154 B CN 103312154B CN 201210063261 A CN201210063261 A CN 201210063261A CN 103312154 B CN103312154 B CN 103312154B
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China
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booster circuit
filter inductance
filter
circuit
reduction voltage
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CN201210063261.9A
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CN103312154A (en
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吴红飞
张君君
夏天
邢岩
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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Abstract

The invention discloses a kind of tandem multi input coupling inductance buck-boost converter, belong to converters technical field.This converter is made up of N number of booster circuit, 1 reduction voltage circuit (20) and load, N be greater than 1 natural number, each booster circuit is all be made up of input source, filter inductance, switching tube, diode and filter capacitor, reduction voltage circuit is made up of switching tube, diode, filter inductance and filter capacitor, the output of N number of booster circuit is connected in series, then be connected with the input of reduction voltage circuit (20), the output of reduction voltage circuit (20) is connected with load, and the filter inductance of N number of booster circuit is coupled with the filter inductance of reduction voltage circuit respectively.Converter of the present invention can realize multiple input source and power to the load simultaneously, and can realize the buck conversion between input and output, and filter inductance is coupled to each other, and converter volume is little, and different input source and load-side can independently control separately, controls simple.

Description

A kind of tandem multi input coupling inductance buck-boost converter
Technical field
The present invention relates to a kind of tandem multi input coupling inductance buck-boost converter, belong to converters technical field.
Background technology
Energy crisis and problem of environmental pollution are day by day serious, and the development and utilization of novel energy is subject to the attention of countries in the world.The output voltage of the generation of electricity by new energy equipment such as heat energy thermoelectric cell, photovoltaic cell, fuel cell with the change of environmental condition in wide range inner conversion, and the energy storage device such as storage battery, super capacitor is along with the difference of charging and discharging state, its terminal voltage is also in very wide scope inner conversion, and the output voltage of single generation of electricity by new energy equipment is very low, therefore need to adapt to the DC converter that wide-voltage range realizes high boosting simultaneously.On the other hand, solar energy, wind energy, etc. novel energy larger with its power output of change of environment, change in voltage, supply of electric power is unstable, discontinuous, and fuel cell output voltage changes with the change of load, therefore, in order to ensure continuous powering load reliably, need multiple new forms of energy to be bonded to each other, form the associating electric power system of having complementary advantages.
In buck-boost converter, the investigation and application that the buck-boost converter be made up of Buck converter and Boost cascade is more because plurality of advantages obtains.Document " Ren little Yong; Tang Zhao; Ruan Xinbo; etc. a kind of four switch Buck-Boost converters [J] of novelty. Proceedings of the CSEE; 2008,28 (21): 15-19. " buck-boost converter be made up of Buck converter and Boost cascade studied only comprises an inductance, and topological structure is simple, but input and output side discontinuous current, is not suitable for the application scenario to ripple sensitivity such as heat energy thermo-electric generation, fuel cell; The buck-boost converter input and output current continuity that document " Rae-YoungKimandJih-ShengLai.Aseamlessmodetransfermaximum powerpointtrackingcontrollerforthermoelectricgeneratorap plications [J] .IEEETransactionsonpowerelectronics; 2008; 24 (5): 2310-2318. " is studied, but comprise two independently inductance, converter volume weight is large.Meanwhile, above-mentioned buck-boost converter can only realize the power conversion of single input source to load, can not realize the power conversion between multiple input source and load simultaneously.On the other hand, adopt traditional Boost in buck-boost converter, its step-up ratio is subject to the restriction of converter breaker in middle pipe maximum duty cycle, voltage and current stress, is not suitable for being used in the occasion requiring high step-up ratio.And requiring the occasion of high boosting, usually realize boosting by transformer, transformer configuration is complicated and conversion efficiency is low.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of tandem multi input coupling inductance buck-boost converter is provided.
This converter is by N number of booster circuit, 1 reduction voltage circuit (20) and load (R o) composition, N be greater than 1 natural number, wherein:
Each booster circuit in described N number of booster circuit is all made up of input source, filter inductance, switching tube, diode and electric capacity, the positive pole of input source connects the 1. end of filter inductance, 2. the end of filter inductance connects the anode of diode and the drain electrode of switching tube, the negative electrode of diode connects one end of filter capacitor, the source electrode of other end connecting valve pipe of filter capacitor and the negative pole of input source, one end that the negative electrode of described diode is connected with filter capacitor forms the positive output end of booster circuit, and the negative pole of described input source forms the negative output terminal of booster circuit;
The output of described N number of booster circuit is sequentially connected in series each other;
Described reduction voltage circuit (20) is by the first switching tube (Q o), the first diode (D o), N number of filter inductance (L o-1, L o-2l o-N) and the first filter capacitor (C o) composition, K filter inductance (L in described N number of filter inductance o-K) 1. end and (K+1) individual filter inductance (L o-(K+1)) 2. end be connected, wherein K is the natural number being less than N, the first switching tube (Q o) drain electrode be connected with the positive output end of the 1st booster circuit, the first switching tube (Q o) source electrode and the first diode (D o) negative electrode and the first filter inductance (L o-1) 2. end be connected, N filter inductance (L o-N) 1. end respectively with the first filter capacitor (C o) one end and load (R o) one end be connected, load (R o) the other end respectively with the first filter capacitor (C o) the other end, the first diode (D o) anode and N number of booster circuit negative output terminal be connected;
In described N number of booster circuit, the filter inductance (L in J booster circuit i-J) with reduction voltage circuit (20) in J filter inductance (L o-J) be coupled by a magnetic core, J is the natural number being less than or equal to N, and filter inductance (L in J booster circuit i-J) 1. end and reduction voltage circuit (20) in J filter inductance (L o-J) 1. end be Same Name of Ends, filter inductance (L in J booster circuit i-J) 2. end and reduction voltage circuit (20) in J filter inductance (L o-J) 2. end be Same Name of Ends.
The present invention has following technique effect:
(1) the buck conversion between multiple input source and load voltage can be realized, be applicable to the application scenario of voltage wide range change;
(2) multiple input source shares reduction voltage circuit and forms load outputs, decreases the quantity of converter switches pipe, simplifies circuit structure;
(3) filter inductance in booster circuit and reduction voltage circuit shares inductance core, decreases the quantity of converter magnetic core used, and can be improved the dynamic property of converter by inductance coupling high;
(4) voltage of multiple input source and load voltage can independently control separately, control simple.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit structure schematic diagram of converter of the present invention.
The circuit structure schematic diagram of converter of the present invention when accompanying drawing 2 is dual input.
Accompanying drawing 3 ~ accompanying drawing 9 is the equivalent circuit theory figure of each switch mode of converter of the present invention.
1,2 designation in above accompanying drawing:, N is the numbering of booster circuit; 20 is reduction voltage circuit; V in1, V in2, V inNbe respectively the 1st, 2, the input source of N number of booster circuit; L i-1, L i-2, L i-Nbe respectively the 1st, 2, the filter inductance of N number of booster circuit; Q 1, Q 2, Q nbe respectively the 1st, 2, the switching tube of N number of booster circuit; D 1, D 2, D nbe respectively the 1st, 2, the diode of N number of booster circuit; C 1, C 2, C nbe respectively the 1st, 2, the filter capacitor of N number of booster circuit; Q ofor the first switching tube of reduction voltage circuit; D ofor the first diode of reduction voltage circuit; L o-1, L o-2, L o-Nfor the filter inductance of reduction voltage circuit; C ofor the filter capacitor of reduction voltage circuit; R ofor load; V ofor output voltage.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
The buck that the present invention adopts the mode of booster circuit and reduction voltage circuit cascade to realize between input source and load voltage converts, and adapts to the needs of input source voltage wide range change with this; The mode of booster circuit series connection is adopted to realize high boosting, namely each booster circuit only needs lower step-up ratio just can realize the higher step-up ratio of whole converter, that reduces each booster circuit realizes difficulty, reduces the stress of device, and improves the efficiency of converter; By by mode coupled to each other for filter inductance in booster circuit and reduction voltage circuit, reduce the number of magnetic elements in converter, reduce volume, the weight of converter, the high frequency ripple that can also cancel each other out in inductance coupled to each other between filter inductance, improve the dynamic property of converter.
As shown in Figure 1, this converter is by N number of booster circuit, 1 reduction voltage circuit (20) and load (R o) composition, N be greater than 1 natural number, wherein: each booster circuit in described N number of booster circuit is all by input source, filter inductance, switching tube, diode and electric capacity composition, the positive pole of input source connects the 1. end of filter inductance, 2. the end of filter inductance connects the anode of diode and the drain electrode of switching tube, the negative electrode of diode connects one end of filter capacitor, the source electrode of other end connecting valve pipe of filter capacitor and the negative pole of input source, one end that the negative electrode of described diode is connected with filter capacitor forms the positive output end of booster circuit, the negative pole of described input source forms the negative output terminal of booster circuit, the output of described N number of booster circuit is sequentially connected in series each other, described reduction voltage circuit (20) is by the first switching tube (Q o), the first diode (D o), N number of filter inductance (L o-1, L o-2l o-N) and the first filter capacitor (C o) composition, K filter inductance (L in described N number of filter inductance o-K) 1. end and (K+1) individual filter inductance (L o-(K+1)) 2. end be connected, wherein K is the natural number being less than N, the first switching tube (Q o) drain electrode be connected with the positive output end of the 1st booster circuit, the first switching tube (Q o) source electrode and the first diode (D o) negative electrode and the first filter inductance (L o-1) 2. end be connected, N filter inductance (L o-N) 1. end respectively with the first filter capacitor (C o) one end and load (R o) one end be connected, load (R o) the other end respectively with the first filter capacitor (C o) the other end, the first diode (D o) anode and N number of booster circuit negative output terminal be connected, in described N number of booster circuit, the filter inductance (L in J booster circuit i-J) with reduction voltage circuit (20) in J filter inductance (L o-J) be coupled by a magnetic core, J is the natural number being less than or equal to N, and filter inductance (L in J booster circuit i-J) 1. end and reduction voltage circuit (20) in J filter inductance (L o-J) 1. end be Same Name of Ends, filter inductance (L in J booster circuit i-J) 2. end and reduction voltage circuit (20) in J filter inductance (L o-J) 2. end be Same Name of Ends.
Below for dual input, and the operation principle of 2 ~ accompanying drawing, 9 pairs of converters of the present invention is made a concrete analysis of by reference to the accompanying drawings.
When converter works: two booster circuits can work in boosting or non-boosting operating state, when booster circuit work and pressure-increasning state, switching tube in corresponding booster circuit is on off state, when booster circuit works in non-pressure-increasning state, the switching tube in corresponding booster circuit keeps off state; Reduction voltage circuit can work in step-down or non-step-down operating state, and when reduction voltage circuit works in step-down state, corresponding switching tube is on off state, and when reduction voltage circuit works in non-step-down state, corresponding switching tube is in conducting state always.
According to the operating state of booster circuit and reduction voltage circuit, converter has 8 kinds of operating states.
Operating state 1: booster circuit 1 works in pressure-increasning state, booster circuit 2 works in pressure-increasning state, and reduction voltage circuit works in step-down state, the switching tube Q now in accompanying drawing 2 1, Q 2and Q oall work on off state.
Operating state 2: booster circuit 1 works in pressure-increasning state, booster circuit 2 works in pressure-increasning state, and reduction voltage circuit works in non-step-down state, the switching tube Q now in accompanying drawing 2 1, Q 2work on off state, switching tube Q oconducting always, equivalent electric circuit as shown in Figure 3.
Operating state 3: booster circuit 1 works in pressure-increasning state, booster circuit 2 works in non-pressure-increasning state, and reduction voltage circuit works in step-down state, the switching tube Q now in accompanying drawing 2 1, Q owork on off state, switching tube Q 2turn off, equivalent electric circuit as shown in Figure 4 always.
Operating state 4: booster circuit 1 works in pressure-increasning state, booster circuit 2 works in non-pressure-increasning state, and reduction voltage circuit works in non-step-down state, the switching tube Q now in accompanying drawing 2 1work on off state, switching tube Q 2turn off, switching tube Q always oconducting always, equivalent electric circuit as shown in Figure 5.
Operating state 5: booster circuit 1 works in non-pressure-increasning state, booster circuit 2 works in pressure-increasning state, and reduction voltage circuit works in step-down state, the switching tube Q now in accompanying drawing 2 2and Q owork on off state, switching tube Q 1turn off, equivalent electric circuit as shown in Figure 6 always.
Operating state 6: booster circuit 1 works in non-pressure-increasning state, booster circuit 2 works in pressure-increasning state, and reduction voltage circuit works in non-step-down state, the switching tube Q now in accompanying drawing 2 2work on off state, switching tube Q 1turn off, switching tube Q always oconducting always, equivalent electric circuit as shown in Figure 7.
Operating state 7: booster circuit 1 works in non-pressure-increasning state, booster circuit 2 works in non-pressure-increasning state, and reduction voltage circuit works in step-down state, the switching tube Q now in accompanying drawing 2 owork on off state, switching tube Q 1, Q 2turn off, equivalent electric circuit as shown in Figure 8 always.
Operating state 8: booster circuit 1 works in non-pressure-increasning state, booster circuit 2 works in non-pressure-increasning state, and reduction voltage circuit works in non-step-down state, the switching tube Q now in accompanying drawing 2 1and Q 2turn off, switching tube Q always oconducting always, equivalent electric circuit as shown in Figure 9.
From analyzing above, the input of converter and output can independently control separately, and the control strategy of converter can have multiple choices, and input source can be powered to the load by boosting inverter, can be powered to the load by decompression transformation, also can be powered to the load by buck conversion.

Claims (1)

1. a tandem multi input coupling inductance buck-boost converter, is characterized in that: this converter is by N number of booster circuit, 1 reduction voltage circuit (20) and load (R o) composition, N be greater than 1 natural number, wherein:
Each booster circuit in described N number of booster circuit is all made up of input source, filter inductance, switching tube, diode and electric capacity, the positive pole of input source connects the 1. end of filter inductance, 2. the end of filter inductance connects the anode of diode and the drain electrode of switching tube, the negative electrode of diode connects one end of filter capacitor, the source electrode of other end connecting valve pipe of filter capacitor and the negative pole of input source, one end that the negative electrode of described diode is connected with filter capacitor forms the positive output end of booster circuit, and the negative pole of described input source forms the negative output terminal of booster circuit;
The output of described N number of booster circuit is sequentially connected in series each other;
Described reduction voltage circuit (20) is by the first switching tube (Q o), the first diode (D o), N number of filter inductance (L o-1, L o-2l o-N) and the first filter capacitor (C o) composition, K filter inductance (L in described N number of filter inductance o-K) 1. end and (K+1) individual filter inductance (L o-(K+1)) 2. end be connected, wherein K is the natural number being less than N, the first switching tube (Q o) drain electrode be connected with the positive output end of the 1st booster circuit, the first switching tube (Q o) source electrode and the first diode (D o) negative electrode and the first filter inductance (L o-1) 2. end be connected, N filter inductance (L o-N) 1. end respectively with the first filter capacitor (C o) one end and load (R o) one end be connected, load (R o) the other end respectively with the first filter capacitor (C o) the other end, the first diode (D o) anode and N number of booster circuit negative output terminal be connected;
In described N number of booster circuit, the filter inductance (L in J booster circuit i-J) with reduction voltage circuit (20) in J filter inductance (L o-J) be coupled by a magnetic core, J is the natural number being less than or equal to N, and filter inductance (L in J booster circuit i-J) 1. end and reduction voltage circuit (20) in J filter inductance (L o-J) 1. end be Same Name of Ends, filter inductance (L in J booster circuit i-J) 2. end and reduction voltage circuit (20) in J filter inductance (L o-J) 2. end be Same Name of Ends.
CN201210063261.9A 2012-03-12 2012-03-12 A kind of tandem multi input coupling inductance buck-boost converter Expired - Fee Related CN103312154B (en)

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CN105245101A (en) * 2015-10-30 2016-01-13 高海凌 High-efficiency photovoltaic power optimizer serial topology circuit and control method thereof
CN105785295B (en) * 2016-04-19 2019-05-03 鑫高益医疗设备股份有限公司 A kind of gradient power amplifier based on multistage coupling inductance optimization design
US10333314B2 (en) * 2017-04-17 2019-06-25 Futurewei Technologies, Inc. Multiple buck stage single boost stage optimizer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6798177B1 (en) * 2002-10-15 2004-09-28 Arques Technology, Inc. Boost-buck cascade converter for pulsating loads

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6798177B1 (en) * 2002-10-15 2004-09-28 Arques Technology, Inc. Boost-buck cascade converter for pulsating loads

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Buck-Boost PWM Converters Having Two Independently Controlled Switches;Jingquan Chen et al.;《Power Electronics Specialists Conference, 2001》;20010621;第736-741页 *
Cascaded DC–DC Converter Connection of Photovoltaic Modules;Geoffrey R.Walker et al.;《IEEE TRANSACTIONS ON POWER ELECTRONICS》;20040731;第19卷(第4期);第1130-1139 *
基于双输入/双输出变换器的三端口变换器拓扑;吴红飞等;《中国电机工程学报》;20110925;第31卷(第27期);第45-51页 *
开关电源中磁集成技术及其应用;陈乾宏等;《电工技术学报》;20040331;第19卷(第3期);第1-8页 *

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