CN107565876A

CN107565876A - A kind of drive system that can make full use of solar energy

Info

Publication number: CN107565876A
Application number: CN201710748960.XA
Authority: CN
Inventors: 彭俊标; 陈旭东
Original assignee: Ningbo De Ye Converter Technique Inc Co
Current assignee: Ningbo De Ye Converter Technique Inc Co
Priority date: 2017-08-28
Filing date: 2017-08-28
Publication date: 2018-01-09

Abstract

The present invention discloses a kind of drive system that can make full use of solar energy, using three-phase bridge principle, improves the service efficiency of solar panel, it is necessary to when drawing water, and tracking solar panels are a frequency converter, its maximum power point automatic pumping；During without needing to draw water, being used as other electrical equipment are supplied after grid-connected inverters, the utilization rate of solar panels is greatly improved, reduce civil power usage amount, power cost saving.

Description

A kind of drive system that can make full use of solar energy

Technical field

The present invention relates to field of solar energy, and in particular to a kind of drive system that can make full use of solar energy.

Background technology

The background of related of the present invention is illustrated below, but these explanations might not form the existing of the present invention Technology.

With expanding economy, the consumption of the energy increases increasingly, and non-renewable resources are less, renewable resource Using limited；And with the development of science and technology, the scope utilized of solar energy also gradually increases, such as combining inverter, off-network inversion Device.

Nowadays for the solar energy water pump controller of in the market when that need not supply water, the utilization rate to solar energy is zero, to night When needing to supply water, because not having the sun, water pump can not but work；If water pump night needs work, also need be equipped with battery and Charging manager, expensive, part is more, in-convenience in use.

The content of the invention

It is an object of the invention to propose a kind of drive system that can make full use of solar energy；When needing to draw water, tracking is too The maximum power point automatic pumping of positive energy plate；During without needing to draw water, used as other electrical equipment are supplied after grid-connected inverters.

According to a kind of drive system that can make full use of solar energy of the present invention, including the first FET, second effect Ying Guan, the 3rd FET, the 4th FET, the 5th FET, the 6th FET, first switch, second switch, Three switches, the 4th switch, the 5th switch, the first inductance, the second inductance, the 3rd inductance, the 4th inductance, transformer, first resistor, Second resistance and 3rd resistor；Input voltage is connected to the drain electrode of the first FET, and the source electrode of first FET connects It is connected to one end of first switch, the source electrode of first FET is additionally coupled to the drain electrode of the second FET, and described second One end of the source electrode connection first resistor of FET, the other end ground connection of the first resistor, first FET Drain electrode is also connected with the drain electrode of the 3rd FET, and the source electrode of the 3rd FET is connected to one end of second switch, described The source electrode of 3rd FET is also connected with the drain electrode of the 4th FET, the source electrode connection second resistance of four FET One end, the other end ground connection of the second resistance, the drain electrode of the 3rd FET are also connected with the drain electrode of the 5th FET, The source electrode of 5th FET is connected to one end of the 3rd switch, and the source electrode of the 5th FET is also connected with the 6th The drain electrode of effect pipe, one end of the source electrode connection 3rd resistor of the 6th FET, another termination of the 3rd resistor Ground；One end of the second switch is additionally coupled to one end of the 4th switch, and one end of the 3rd switch is additionally coupled to the 5th and opened One end of pass, the other end of the first switch connect one end of the first inductance, the other end connection second of the second switch One end of inductance, the other end of the 3rd switch connect one end of the 3rd inductance, the other end connection the of first inductance The other end of two inductance, the other end of second inductance connect the other end of the 3rd inductance；The other end of 4th switch Connect one end of the 4th inductance, the first end of the other end connection transformer of the 4th inductance, the 5th switch it is another Second end of end connection transformer, the 3rd end of the transformer and the 4th end are connected to single-phase 220V power networks.

Preferably, the transformer is isolating transformer.

Preferably, it is parallel with the first diode between the drain electrode of first FET and source electrode.

Preferably, it is parallel with the second diode between the drain electrode of second FET and source electrode.

Preferably, it is parallel with the 3rd diode between the drain electrode of the 3rd FET and source electrode.

Preferably, it is parallel with the 4th diode between the drain electrode of the 4th FET and source electrode.

Preferably, it is parallel with the 5th diode between the drain electrode of the 5th FET and source electrode.

Preferably, it is parallel with the 6th diode between the drain electrode of the 6th FET and source electrode.

Preferably, first FET, the second FET, the 3rd FET, the 4th FET, the 5th The grid of FET and the 6th FET is connected to MUC.

Preferably, first FET, the second FET, the 3rd FET, the 4th FET, The substrate of 5th FET and the 6th FET is all hanging.

The present invention utilizes three-phase bridge principle, improves the service efficiency of solar panel, it is necessary to when drawing water, tracks solar energy Plate is a frequency converter, its maximum power point automatic pumping；During without needing to draw water, as supplying other electrical equipment after grid-connected inverters Use, the utilization rate of solar panels is greatly improved, reduce civil power usage amount, power cost saving.

Compared with prior art, the present invention is advantageous in that：1）When needing to draw water, the maximum work of solar panels is tracked Rate point automatic pumping；2）During without needing to draw water, used as other electrical equipment are supplied after grid-connected inverters；3）It is greatly improved too The utilization rate of positive energy plate, reduces civil power usage amount, power cost saving；4）The service efficiency of solar panel is improved, function is more It is abundant.

Brief description of the drawings

By that will become more and the specific embodiment part provided, the features and advantages of the present invention referring to the drawings It is readily appreciated that, in the accompanying drawings.

Fig. 1 is a kind of circuit theory diagrams of drive system that can make full use of solar energy of the present invention.

Fig. 2 is the circuit theory diagrams of the normal mode of operation of the drive system of the present invention.

Fig. 3 is the circuit theory diagrams of the inversion mode of operation of the drive system of the present invention.

Embodiment

The illustrative embodiments of the present invention are described in detail with reference to the accompanying drawings；Illustrative embodiments are retouched State merely for the sake of demonstration purpose, and be definitely not to the present invention and its application or the limitation of usage.

In present embodiment, drive system is divided into two kinds of mode of operations, and the first is normal mode of operation, and it is in solar energy Used when power supply and energy abundance；It is inversion mode of operation in second, it is used when solar powered insufficient.

In present embodiment, MPPT algorithm includes open-circuit voltage ratio method, short circuit current ratio method, limit Tracing Control method With observation regulation method；MPPT controller can also detecting real-time solar panels generating voltage, and follow the trail of ceiling voltage current value, System is set to be charged with maximum power output to battery；Its use maximum power point tracking system be one kind by adjusting electric mould The working condition of block, photovoltaic panel is set to export the direct current that the electrical system of more electric energy can send solar panel Effectively be stored in battery, can efficiently solve remote districts and tourist area that normal grid can not cover life and Commercial power, not generation environment pollution.

See Fig. 2, the normal mode of operation of drive system：On daytime, when solar powered and energy is sufficient, drive system is adopted With normal mode of operation, it uses MPPT algorithm to realize pumping for water pump control, and first switch S1, second switch S2 and the 3rd are opened S3 closures are closed, the 4th switch S4 and the 5th switch S5 are disconnected so that water pump energy normal work.

By Fig. 3, the inversion mode of operation of drive system：When solar powered insufficient, can not meet water pump startup or Normal work, or water pump is without supplying water, during in stopped status；To avoid the waste of energy, drive system will automatically switch For inversion mode of operation, first switch S1, second switch S2 and the 3rd switch S3 are disconnected, by the 4th switch S4 and the 5th switch S5 is closed, and directly by solar energy inversion grid connection, improves the service efficiency of solar panels.

Although with reference to illustrative embodiments, invention has been described, but it is to be understood that the present invention does not limit to The embodiment that Yu Wenzhong is described in detail and shown, in the case of without departing from claims limited range, this Art personnel can make various changes to the illustrative embodiments.

Claims

A kind of 1. drive system that can make full use of solar energy, it is characterised in that：Including the first FET（T1）, second effect Ying Guan（T2）, the 3rd FET（T3）, the 4th FET（T4）, the 5th FET（T5）, the 6th FET（T6）、 First switch（S1）, second switch（S2）, the 3rd switch（S3）, the 4th switch（S4）, the 5th switch（S5）, the first inductance （L1）, the second inductance（L2）, the 3rd inductance（L3）, the 4th inductance（L4）, transformer（U1）, first resistor（Rsu）, second resistance （Rsv）And 3rd resistor（Rsw）；Input voltage（VBUS）It is connected to the first FET（T1）Drain electrode, it is described first effect Ying Guan（T1）Source electrode be connected to first switch（S1）One end, first FET（T1）Source electrode be additionally coupled to second FET（T2）Drain electrode, second FET（T2）Source electrode connection first resistor（Rsu）One end, described first Resistance（Rsu）The other end ground connection, first FET（T1）Drain electrode be also connected with the 3rd FET（T3）Drain electrode, 3rd FET（T3）Source electrode be connected to second switch（S2）One end, the 3rd FET（T3）Source electrode It is also connected with the 4th FET（T4）Drain electrode, four FET（T4）Source electrode connection second resistance（Rsv）One end, The second resistance（Rsv）The other end ground connection, the 3rd FET（T3）Drain electrode be also connected with the 5th FET （T5）Drain electrode, the 5th FET（T5）Source electrode be connected to the 3rd switch（S3）One end, the 5th field-effect Pipe（T5）Source electrode be also connected with the 6th FET（T6）Drain electrode, the 6th FET（T6）Source electrode connection the 3rd electricity Resistance（Rsw）One end, the 3rd resistor（Rsw）The other end ground connection；The second switch（S2）One end be additionally coupled to Four switches（S4）One end, it is described 3rd switch（S3）One end be additionally coupled to the 5th switch（S5）One end, described first opens Close（S1）The other end connect the first inductance（L1）One end, the second switch（S2）The other end connect the second inductance（L2） One end, it is described 3rd switch（S3）The other end connect the 3rd inductance（L3）One end, first inductance（L1）It is another The second inductance of end connection（L2）The other end, second inductance（L2）The other end connect the 3rd inductance（L3）The other end； 4th switch（L4）The other end connect the 4th inductance（L4）One end, the 4th inductance（L4）The other end connection become Depressor（U1）First end, it is described 5th switch（S5）The other end connection transformer（U1）The second end, the transformer （U1）The 3rd end and the 4th end be connected to single-phase 220V power networks.
A kind of 2. drive system that can make full use of solar energy according to claim 1, it is characterised in that：The transformer （U1）For isolating transformer.
A kind of 3. drive system that can make full use of solar energy according to claim 2, it is characterised in that：Described first Effect pipe（T1）Drain electrode and source electrode between be parallel with the first diode（D1）.
A kind of 4. drive system that can make full use of solar energy according to claim 3, it is characterised in that：Described second Effect pipe（T2）Drain electrode and source electrode between be parallel with the second diode（D2）.
A kind of 5. drive system that can make full use of solar energy according to claim 4, it is characterised in that：Described 3rd Effect pipe（T3）Drain electrode and source electrode between be parallel with the 3rd diode（D3）.
A kind of 6. drive system that can make full use of solar energy according to claim 5, it is characterised in that：Described 4th Effect pipe（T4）Drain electrode and source electrode between be parallel with the 4th diode（D4）.
A kind of 7. drive system that can make full use of solar energy according to claim 6, it is characterised in that：Described 5th Effect pipe（T5）Drain electrode and source electrode between be parallel with the 5th diode（D5）.
A kind of 8. drive system that can make full use of solar energy according to claim 7, it is characterised in that：Described 6th Effect pipe（T6）Drain electrode and source electrode between be parallel with the 6th diode（D6）.
A kind of 9. drive system that can make full use of solar energy according to claim 8, it is characterised in that：Described first Effect pipe（T1）, the second FET（T2）, the 3rd FET（T3）, the 4th FET（T4）, the 5th FET （T5）With the 6th FET（T6）Grid be connected to MUC.
A kind of 10. drive system that can make full use of solar energy according to claim 9, it is characterised in that：It is described First FET（T1）, the second FET（T2）, the 3rd FET（T3）, the 4th FET（T4）, the 5th effect Ying Guan（T5）With the 6th FET（T6）Substrate it is all hanging.