CN206712678U - A kind of multi input parallel power converter - Google Patents

A kind of multi input parallel power converter Download PDF

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Publication number
CN206712678U
CN206712678U CN201720466748.XU CN201720466748U CN206712678U CN 206712678 U CN206712678 U CN 206712678U CN 201720466748 U CN201720466748 U CN 201720466748U CN 206712678 U CN206712678 U CN 206712678U
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CN
China
Prior art keywords
buck
filter capacitor
diode
boost
inductance
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Expired - Fee Related
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CN201720466748.XU
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Chinese (zh)
Inventor
刘凯
邓永华
邓长春
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Sichuan Injet Electric Co Ltd
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Sichuan Injet Electric Co Ltd
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Priority to CN201720466748.XU priority Critical patent/CN206712678U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10Technologies 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

Abstract

The utility model discloses a kind of multi input parallel power converter, wherein, multi input parallel power converter of the present utility model is on the basis of more BUCK parallel-connection structures, not only a BOOST circuit is added in outlet side, can be in the case where input voltage be high, output voltage is boosted into the required burning voltage of user, also increase a reactive power compensation circuit between each input source and BUCK circuits simultaneously, because the reactive power compensation circuit includes an inductance and an electric capacity, the BUCK circuits of rear class and the power factor of BOOST circuits can be corrected, therefore, the utility model is when the output of input source is alternating current, the power factor (PF) of AC can be improved, make the delivery efficiency of input source higher.

Description

A kind of multi input parallel power converter
Technical field
The utility model belongs to converters technical field, more particularly to a kind of multi input parallel power conversion Device.
Background technology
Traditional energy is increasingly exhausted, problem of environmental pollution deteriorates, and new energy development is extremely urgent.Clean reproducible energy is such as Solar energy, wind energy and wave energy, it is increasingly subject to all circles' extensive concern.These regenerative resources are widely distributed and reserves are huge, Do not produce pollution during use to environment, be advantageous to the harmonious coexistence of the mankind and environment.
For the electric power system of new energy, often containing multiple input sources, and the output voltage of input source is unstable.In order to Load is given to be required to DC/DC power inverters with stable output voltage, each group of input source, for by unstable output voltage It is converted into stable voltage output.If using traditional single-input single-output DC/DC power inverters, substantial amounts of power is needed Converter.
In current DC/DC converters, BUCK Bian Huan Qi ﹑ BOOST converters and by the above two liftings for forming of cascade Buckling parallel operation is most widely used.But conventional converter can be only done the power conversion in single input source, it is impossible to realize multiple defeated Enter the power parallel conversion in source.Although it has been suggested that transformer configuration in parallel more BUCK, due to its output voltage only Can be lower than input voltage, can not meet the needs of user is to high output voltage, and what is more important is when the output of its input source During alternating current (such as Feng Neng ﹑ wave energies), the transformer configuration of either BOOST parallel connections or BUCK parallel connections, exchange be present The extremely low situation of side power factor (PF), make input source output efficiency not high.
Utility model content
The purpose of this utility model is:Solve converter in the prior art, when input source output is alternating current, to exist The extremely low situation of AC power factor (PF), make the not high technical problem of input source output efficiency.
In order to realize above-mentioned purpose of utility model, the utility model provides following technical scheme:
A kind of multi input parallel power converter, it includes N number of reactive power compensation circuit, N number of BUCK circuits and one BOOST circuits, N are the natural number more than 1, wherein;
Each input source is connected by a reactive power compensation circuit with a BUCK circuit respectively, each input The input of the output end of BUCK circuits corresponding to source and the BOOST circuits is connected in the two of a filter capacitor in parallel End, output end and the load of the BOOST circuits connect;Also, the reactive power compensation circuit includes an inductance and an electricity Hold, wherein the both ends of the inductance connect the positive pole of input source and the positive pole of the electric capacity, the negative pole connection of the electric capacity respectively The negative pole of input source.
According to a kind of specific embodiment, in multi input parallel power converter of the present utility model, the BUCK Circuit includes mono- diode of Kai Guan Guan ﹑ and a BUCK inductance;Wherein,
The drain electrode of the switching tube is connected with the capacitance cathode of the reactive power compensation circuit, the source electrode difference of the switching tube It is connected with the negative electrode of the diode and one end of the BUCK inductance, the anode of the diode and the reactive power compensation circuit Electric capacity negative pole connection;
Also, the positive pole of the filter capacitor is connected with the other end of the BUCK inductance, the negative pole of the filter capacitor It is connected with the anode of the diode.
According to a kind of specific embodiment, in multi input parallel power converter of the present utility model, the BOOST Circuit includes mono- mono- diode of Kai Guan Guan ﹑ of a BOOST electricity Gan ﹑ and an output filter capacitor;Wherein,
One end of the BOOST inductance connects the positive pole of the filter capacitor, and its other end connects the leakage of the switching tube Pole and the anode of the diode, the source electrode of the switching tube connect the negative pole of the filter capacitor and the output filtering respectively The negative pole of electric capacity, the negative electrode of the diode are connected with the positive pole of the output filter capacitor.
Compared with prior art, the beneficial effects of the utility model:
1st, the utility model increases by one on the basis of more BUCK parallel-connection structures between each input source and BUCK circuits Individual reactive power compensation circuit, because the reactive power compensation circuit includes an inductance and an electric capacity, the BUCK electricity of rear class can be corrected Road and the power factor of BOOST circuits, therefore, the utility model is when the output of input source is alternating current, it is possible to increase exchange The power factor (PF) of side, make the delivery efficiency of input source higher.
2nd, the utility model also adds a BOOST circuit on the basis of more BUCK parallel-connection structures in rear class, can be In the case that input voltage is not high, output voltage is boosted into the required stable high voltage of user.
3rd, due to controlling independent, energy in multi input parallel power converter of the present utility model, between each input source Enough to provide different power to load respectively according to the actual requirements, therefore, effectively input voltage range of the present utility model is wide, energy Enough meets the needs of user is to stablizing high output voltage.
Brief description of the drawings:
Fig. 1 is the electrical block diagram of the utility model multi input parallel power converter.
1- reactive power compensation circuits, 2-BUCK circuits, 3-BOOST circuits, 4- filter capacitors
Embodiment
The utility model is described in further detail with reference to test example and embodiment.But should not be by this The scope for being interpreted as the above-mentioned theme of the utility model is only limitted to following embodiment, all to be realized based on the utility model content Technology belongs to the scope of the utility model.
The electrical block diagram of the utility model multi input parallel power converter with reference to shown in Fig. 1;Wherein, originally The multi input parallel power converter of utility model, it includes N number of reactive power compensation circuit, N number of BUCK circuits and a BOOST Circuit, N are the natural number more than 1.
Wherein, each input source is connected by a reactive power compensation circuit with a BUCK circuit respectively, each input source The output end of corresponding BUCK circuits and the input of BOOST circuits 3 are connected in the both ends of filter capacitor 4, BOOST electricity in parallel The output end on road 3 connects with load.
Also, reactive power compensation circuit 1 includes an inductance and an electric capacity, and in reactive power compensation circuit 1, its inductance Both ends connect the positive pole of input source and the positive pole of its electric capacity respectively, the negative pole of the negative pole connection input source of its electric capacity.
Due to the difference of inverter power grade, inductance value and capacitance parameter in itself BUCK and BOOST circuit will Difference, so the power factor of whole converter also will be different.When converter power factor is bears, i.e., whole power conversion Device shows as capacitive, and the inductance in reactive power compensation circuit can make converter power factor with the capacitive speciality in neutralizing converter Tend to 1, and when converter power factor is more than 0 and is less than 1, i.e., whole power inverter shows as perception, reactive power compensation circuit In electric capacity with the perceptual speciality in neutralizing converter converter power factor can be made to tend to 1, so as to realize to rear class BUCK electricity Road and the PFC of BOOST circuits.
Therefore, multi input parallel power converter of the present utility model, on the basis of more BUCK parallel-connection structures, every Increase a reactive power compensation circuit between individual input source and BUCK circuit, because the reactive power compensation circuit includes an inductance and one Individual electric capacity, the BUCK circuits of rear class and the power factor of BOOST circuits can be corrected, therefore, the utility model is in input source Export for alternating current when, it is possible to increase the power factor (PF) of AC, make the delivery efficiency of input source higher.Meanwhile rear class is set There are BOOST circuits, output voltage can be boosted into the required stable high voltage of user in the case where input voltage is not high.
Specifically, BUCK circuits 2 include mono- diode of Kai Guan Guan ﹑ and a BUCK inductance.Moreover, in BUCK electricity In road 2, the drain electrode of its switching tube is connected with the capacitance cathode of reactive power compensation circuit 1, the source electrode of its switching tube respectively with secondly pole The negative electrode of pipe is connected with one end of BUCK inductance, and the anode of its diode is connected with the electric capacity negative pole of reactive power compensation circuit 1.And And the positive pole of filter capacitor 4 is connected with the other end of BUCK inductance, the negative pole of filter capacitor 4 and diode in BUCK circuits 2 Anode connects.
Further, in multi input parallel power converter of the present utility model, BOOST circuits 3 include a BOOST Mono- mono- diode of Kai Guan Guan ﹑ of electricity Gan ﹑ and an output filter capacitor.Moreover, in BOOST circuits 3, BOOST inductance One end connects the positive pole of filter capacitor 4, and its other end connects drain electrode and the anode of its diode of its switching tube, its switching tube Source electrode connects the negative pole of filter capacitor 4 and the negative pole of its output filter capacitor respectively, and the negative electrode of its diode exports filtering with it The positive pole connection of electric capacity.
Multi input parallel power converter of the present utility model at work, makes to control independently between each input source, And different power is provided to load respectively according to the actual requirements, and it is wide so as to increase effective input voltage range, it disclosure satisfy that use Family is to stablizing the demand of high output voltage.

Claims (3)

  1. A kind of 1. multi input parallel power converter, it is characterised in that including N number of reactive power compensation circuit, N number of BUCK circuits and One BOOST circuit, N are the natural number more than 1, wherein;
    Each input source is connected by a reactive power compensation circuit with a BUCK circuit respectively, each input source pair The input of the output end for the BUCK circuits answered and the BOOST circuits is connected in the both ends of a filter capacitor, institute in parallel The output end and load for stating BOOST circuits connect;Also, the reactive power compensation circuit includes an inductance and an electric capacity, its Described in the both ends of inductance connect the positive pole of input source and the positive pole of the electric capacity respectively, the negative pole connection input source of the electric capacity Negative pole.
  2. 2. multi input parallel power converter as claimed in claim 1, it is characterised in that the BUCK circuits include one Mono- diode of Kai Guan Guan ﹑ and a BUCK inductance;Wherein,
    The drain electrode of the switching tube is connected with the capacitance cathode of the reactive power compensation circuit, the source electrode of the switching tube respectively with institute The negative electrode for stating diode connects with one end of the BUCK inductance, the electricity of the anode of the diode and the reactive power compensation circuit Hold negative pole connection;
    Also, the positive pole of the filter capacitor is connected with the other end of the BUCK inductance, the negative pole of the filter capacitor and institute State the anode connection of diode.
  3. 3. multi input parallel power converter as claimed in claim 1, it is characterised in that the BOOST circuits include one Individual mono- mono- diode of Kai Guan Guan ﹑ of BOOST electricity Gan ﹑ and an output filter capacitor;Wherein,
    One end of the BOOST inductance connects the positive pole of the filter capacitor, its other end connect the switching tube drain electrode and The anode of the diode, the source electrode of the switching tube connect the negative pole of the filter capacitor and the output filter capacitor respectively Negative pole, the negative electrode of the diode is connected with the positive pole of the output filter capacitor.
CN201720466748.XU 2017-04-28 2017-04-28 A kind of multi input parallel power converter Expired - Fee Related CN206712678U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720466748.XU CN206712678U (en) 2017-04-28 2017-04-28 A kind of multi input parallel power converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720466748.XU CN206712678U (en) 2017-04-28 2017-04-28 A kind of multi input parallel power converter

Publications (1)

Publication Number Publication Date
CN206712678U true CN206712678U (en) 2017-12-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110209086A (en) * 2019-06-06 2019-09-06 深圳市英可瑞科技股份有限公司 A kind of digital power/enabled control method of equipment multi signal input

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110209086A (en) * 2019-06-06 2019-09-06 深圳市英可瑞科技股份有限公司 A kind of digital power/enabled control method of equipment multi signal input

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Granted publication date: 20171205