CN109149933A - A kind of high-gain DC/DC converter with coupling inductance - Google Patents
A kind of high-gain DC/DC converter with coupling inductance Download PDFInfo
- Publication number
- CN109149933A CN109149933A CN201811180587.3A CN201811180587A CN109149933A CN 109149933 A CN109149933 A CN 109149933A CN 201811180587 A CN201811180587 A CN 201811180587A CN 109149933 A CN109149933 A CN 109149933A
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- capacitor
- converter
- inductance
- diode
- gain
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- 230000008878 coupling Effects 0.000 title claims abstract description 27
- 238000010168 coupling process Methods 0.000 title claims abstract description 27
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 27
- 239000003990 capacitor Substances 0.000 claims abstract description 41
- 238000004804 winding Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 3
- 230000018199 S phase Effects 0.000 claims description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
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
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC 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
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC 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
- H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC 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 with automatic control of output voltage or current, e.g. switching regulators
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
本发明提供一种非隔离高增益DC/DC升压变换器，这种变换器是基于二次型变换器，包括一个耦合电感、一个电感、一个单功率开关管、三个电容器、四个二极管组成，通过无源电压钳位电路回收耦合电感的漏电感存储的能量使功率开关的脉冲减小，从而降低损耗，提高效率。由于电感是与输入源串联使用的，所以该转换器的输入电流是连续的，因此可以实现低电流纹波，同时还需输入的电流可被用于可再生能源，如光伏电池板的最大功率点追踪。另一方面，高电压增益有利于该转换器增加电池板电压。The invention provides a non-isolated high-gain DC/DC boost converter, which is based on a quadratic converter and includes a coupled inductor, an inductor, a single power switch tube, three capacitors, and four diodes The energy stored in the leakage inductance of the coupling inductance is recovered through the passive voltage clamping circuit to reduce the pulse of the power switch, thereby reducing the loss and improving the efficiency. Since the inductor is used in series with the input source, the input current of the converter is continuous, so low current ripple can be achieved, and the input current can be used for renewable energy sources such as maximum power of photovoltaic panels point tracking. On the other hand, the high voltage gain favors the converter to increase the panel voltage.
Description
Technical field
The present invention relates to a kind of high-gain DC/DC converter with coupling inductance, belongs to electricity field.
Background technique
In recent years, the promotion of environmental consciousness and falling sharply for fossil fuel reserves make renewable energy become new lover.Fuel
Battery (F.C.), photovoltaic (PV) and wind energy all belong to renewable energy mentioned above, but their output voltage is very low.In order to
Higher voltage is obtained, photovoltaic cell plate module can use concatenated mode, but there is also some disadvantages for this method, such as
When in part under conditions of sunshade.Therefore, in order to which the input voltage for keeping its extremely low increases to high voltage appropriate, selection is suitable
High-gain DC-DC converter is extremely important.Many high-gain topological structures are suggested, such as: quadratic B oost-Zeta converter, grade
Join high-order converter, more lever boosting converters, transless booster converter, inverse excitation type converter etc..However, these are converted
Device there are low efficiency, element is more, at high cost the disadvantages of.It is one of the technology of raising output voltage using coupling inductance, however this
Kind of converter is there are some disadvantages, such as due to the leakage inductance of coupling inductance and the due to voltage spikes on the main switch that generates, are at this moment deposited
The energy stored up in coupling inductor charges to the parasitic capacitance of switch, therefore voltage clamp circuit can be made to solve
This problem, and the energy being stored in leakage inductor can be recycled.
Summary of the invention
Technical problem: in order to solve the defects of prior art, the present invention provides a kind of high-gains with coupling inductance
DC/DC converter.
Technical solution: the present invention provides a kind of high-gain DC/DC converter with coupling inductance, it is characterised in that: packet
Include switching tube S, capacitor C1, capacitor C2, capacitor C3, diode D1, diode D2, diode D3, diode D4, excitation
Inductance L1, leakage inductance Lk, coupling inductance T1；The coupling inductance T1 is made of winding N1 and winding N2 coupling；The change
The one end magnetizing inductance L1 is connected with the anode of input power in parallel operation, and the other end is connected with the anode of D1, D2；The cathode of D1 and leakage
Inductance is connected with one end of capacitor C1, and the other end of leakage inductance Lk is connected with winding N1, the other end and diode D3 of winding
Anode and switching tube S be connected, the cathode of D3 is connected with one end of capacitor C2 and winding N2, the other end of N2 and the anode of D4
It is connected, the cathode of D4 is connected with one end of capacitor and load, and capacitor C1, switching tube S, capacitor C2, the other end of capacitor C3 are common
It is connected with the other end of the cathode of input power and load.In order to simplify the circuit analysis of proposed converter, consider following
Assuming that.
1) other than the leakage inductance of coupling inductance T1, all elements are all ideal.
2) capacitor of capacitor C1~C3 is large enough to make the voltage between them to be assumed in each switch periods
Constant.
3) N_2/N_1 such as turn ratio N of coupling inductance T_1.
The utility model has the advantages that a kind of non-isolated high-gain DC-DC converter of double winding coupling inductance provided by the invention.It is this
Structure is based on quadratic form Boost.Since inductor is directly connected to input voltage source, make the input electricity of the converter
Stream is continuous, and is conducive to renewable energy source device.It is recycled using the clamp circuit in the converter in leakage inductance device
Storage energy, therefore the voltage stress on main switch is reduced, improve the efficiency of converter.
Detailed description of the invention
Fig. 1 is the circuit topology figure of converter
Specific embodiment
A kind of high-gain DC/DC converter circuit with coupling inductance of the present invention is further illustrated below.Band
There is the high-gain DC/DC converter circuit of coupling inductance, it is characterised in that: including including switching tube S, capacitor C1, capacitor
C2, capacitor C3, diode D1, diode D2, diode D3, diode D4, magnetizing inductance L1, leakage inductance Lk, coupling inductance
T1；
The coupling inductance T1 is made of winding N1 and winding N2 coupling；One end magnetizing inductance L1 in the converter
It is connected with the anode of input power, the other end is connected with the anode of D1, D2；One end phase of the cathode of D1 and leakage inductance and capacitor C1
Even, the other end of leakage inductance Lk is connected with winding N1, the other end of winding and the anode of diode D3 and switching tube S phase
Even, the cathode of D3 is connected with one end of capacitor C2 and winding N2, and the other end of N2 is connected with the anode of D4, the cathode and capacitor of D4
One end and load be connected, capacitor C1, switching tube S, capacitor C2, capacitor C3 the other end jointly with the cathode of input power and negative
The other end of load is connected.
Following hypothesis is done to the circuit when in use simultaneously:
1) other than the leakage inductance of coupling inductance T1, all elements are all ideal.
2) capacitor of capacitor C1~C3 is large enough to make the voltage between them to be assumed in each switch periods
Constant.
3) N2/N1 such as turn ratio N of coupling inductance T1.
The steady-state analysis of the converter proposed under the conditions of CCM is described as follows.
Mode 1: in this mode, switch S closure, diode D2 and D4 conducting.The electric current of magnetizing inductance Lm reduces, electric leakage
The electric current for feeling Lk is linearly increasing.Capacitor C1 and C2 are discharged, and output capacitor C3 discharges into load.As inductive current ILkWith
ILmWhen becoming equal, which terminates.
Mode 2: in this time interval, switch S is still closed, and diode D2 is still connected, diode D3 and D4 cut-off.Capacitor
Device C1 is discharged to leakage inductance LK and magnetizing inductance Lm.Input inductance is charged by input power, while capacitor C3 discharges into load.
When opening and closing is run jointly, this mode terminates.
Mode 3: in this time interval, switch S shutdown, diode D1, D3 and D4 conducting.Capacitor C1 is by input power
Diode D3 to capacitor C2 is passed through in charging, leakage inductance electric discharge.The energy of Lm is transmitted to C3 by the secondary side and D4 of T, works as leakage
When inducing current becomes zero, which terminates.
Mode 4: in this time interval, switch S shutdown, diode D1 and D4 conducting, diode D2 and D3 cut-off.Capacitor
Device C1 is charged by input source, and leakage inductance electric current is zero.Capacitor C2 discharges at this time, and the energy of magnetizing inductance is passed to load.When
When switch S is disconnected when next switch periods start, this mode terminates.
In order to simplify the steady-state analysis of CCM work, mode 2 and mode 3 are only considered, and have ignored the leakage inductance of primary side.
Claims (3)
1. a kind of high-gain DC/DC converter with coupling inductance, it is characterised in that: including switching tube S, capacitor C1, electricity
Container C2, capacitor C3, diode D1, diode D2, diode D3, diode D4, magnetizing inductance L1, leakage inductance Lk, coupling
Inductance T1；The coupling inductance T1 is made of winding N1 and winding N2 coupling；One end magnetizing inductance L1 in the converter
It is connected with the anode of input power, the other end is connected with the anode of D1, D2；One end phase of the cathode of D1 and leakage inductance and capacitor C1
Even, the other end of leakage inductance Lk is connected with winding N1, the other end of winding and the anode of diode D3 and switching tube S phase
Even, the cathode of D3 is connected with one end of capacitor C2 and winding N2, and the other end of N2 is connected with the anode of D4, the cathode and capacitor of D4
One end and load be connected, capacitor C1, switching tube S, capacitor C2, capacitor C3 the other end jointly with the cathode of input power and negative
The other end of load is connected.
2. converter as described in claim 1, it is characterised in that other than the leakage inductance of coupling inductance T1, all elements are all reasons
Think.
3. converter as claimed in claim 2, it is characterised in that the capacitor of capacitor C1, C2, C3 are large enough to make them it
Between voltage each switch periods in be assumed to constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811180587.3A CN109149933A (en) | 2018-10-09 | 2018-10-09 | A kind of high-gain DC/DC converter with coupling inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811180587.3A CN109149933A (en) | 2018-10-09 | 2018-10-09 | A kind of high-gain DC/DC converter with coupling inductance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109149933A true CN109149933A (en) | 2019-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811180587.3A Pending CN109149933A (en) | 2018-10-09 | 2018-10-09 | A kind of high-gain DC/DC converter with coupling inductance |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111245223A (en) * | 2020-01-15 | 2020-06-05 | 广东工业大学 | Low-voltage stress boost converter and expanded low-voltage stress boost converter |
| CN111510009A (en) * | 2020-05-20 | 2020-08-07 | 上海海事大学 | Photovoltaic inverter without leakage current and control method thereof |
-
2018
- 2018-10-09 CN CN201811180587.3A patent/CN109149933A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111245223A (en) * | 2020-01-15 | 2020-06-05 | 广东工业大学 | Low-voltage stress boost converter and expanded low-voltage stress boost converter |
| CN111510009A (en) * | 2020-05-20 | 2020-08-07 | 上海海事大学 | Photovoltaic inverter without leakage current and control method thereof |
| CN111510009B (en) * | 2020-05-20 | 2021-07-30 | 上海海事大学 | A leakage-free photovoltaic inverter and its control method |
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Application publication date: 20190104 |