CN202872632U - Restart prevention circuit for photovoltaic grid-connected inverter - Google Patents

Restart prevention circuit for photovoltaic grid-connected inverter Download PDF

Info

Publication number
CN202872632U
CN202872632U CN 201220603960 CN201220603960U CN202872632U CN 202872632 U CN202872632 U CN 202872632U CN 201220603960 CN201220603960 CN 201220603960 CN 201220603960 U CN201220603960 U CN 201220603960U CN 202872632 U CN202872632 U CN 202872632U
Authority
CN
China
Prior art keywords
auxiliary source
switching tube
photocell
energy consumption
resistance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220603960
Other languages
Chinese (zh)
Inventor
裴乐
鞠文耀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GLARUN POWER CO Ltd
Original Assignee
GLARUN POWER CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GLARUN POWER CO Ltd filed Critical GLARUN POWER CO Ltd
Priority to CN 201220603960 priority Critical patent/CN202872632U/en
Application granted granted Critical
Publication of CN202872632U publication Critical patent/CN202872632U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers

Abstract

The utility model relates to a restart prevention circuit for a photovoltaic grid-connected inverter. When energy of a photocell is sufficient, the system normally works, an auxiliary source outputs a stable voltage, a switching tube Q1 is driven to be conducted, the voltage of gate pole of the switching tube Q1 is configured to a zero level, and the Q1 is shut off; an energy consumption resistor R3 direct circuit is disconnected, and the system operates without additional power consumption; when the energy of the photocell is insufficient, the power of the auxiliary source is cut off, a driving signal of a switching tube Q2 is driven to disappear, and the residual electric quantity on support capacitors C2 and C3 is subjected to voltage division through resistors R1 and R2, so that the switching tube Q1 is conducted, the energy consumption resistor R3 direct circuit is connected to the circuit, the voltage of the photocell is configured to the starting voltage of the auxiliary source or below, and the auxiliary source is reliably shut off; and when illumination recovers until the power of the auxiliary source and the energy consumption resistor can be simultaneously provided, the system is restarted and restores to be normal, and the resistor R4 is used for limiting the driving current. The problem that the photovoltaic inverter is repeatedly restarted is solved, the on-off frequency of the equipment is reduced, and the service life of equipment is prolonged; and meanwhile, the usability of the equipment is improved.

Description

A kind of photovoltaic combining inverter prevents restarting circuit
Technical field
The utility model relates to a kind ofly anti-restarts circuit, relates in particular to that a kind of photovoltaic combining inverter is anti-restarts circuit, belongs to the utilization of new energy resources field.
Background technology
Generally speaking, the energy source of small-power solar grid-connected inverter is solar module, because the parameters such as output voltage, power and the illumination of assembly, temperature are closely bound up, thereby every day early, always have constantly power output and the inverter startup power critical of solar components an evening, traditional scheme does not consider this, the state of repeatedly restarting appears in inverter in early party every day, cause that life of product reduces, usability is poor.
The utility model content
Technical problem to be solved: the problem the utility model of repeatedly restarting during for the sooner or later switching on and shutting down of conventional photovoltaic combining inverter provides a kind of photovoltaic combining inverter to prevent restarting circuit, to reduce the on-off times of equipment, in the extension device life-span, increase simultaneously the usability of equipment.
Technical scheme: provide a kind of photovoltaic combining inverter to prevent restarting circuit for above not enough the utility model, it is characterized in that: comprise photocell, auxiliary source, light-coupled isolation drives, driving switch pipe Q2, switching tube Q1, energy consumption resistor R3, capacitor C 1, Support Capacitor C2, C3, resistance R 1, R2, R4.
Form the Q1 drive level after resistance R 1, the R2 series connection dividing potential drop, energy consumption resistor R3 is with after switching tube Q1 connects, and is in parallel with Support Capacitor C2, C3, photocell; Capacitor C 1, driving switch pipe Q2, resistance R 2 are connected in parallel.Be provided with resistance R 4 between driving switch pipe Q2 and switching tube Q1, auxiliary source is controlled the break-make of Q2 by optical couple isolation drive circuit, thereby reaches the purpose of control Q1.
When the photocell energy was sufficient, system normally moved, auxiliary source stable output voltage, and driving switch pipe Q2 conducting, then switching tube Q1 gate pole is pulled to zero level, and Q1 turn-offs; Energy consumption resistor R3 forthright is disconnected, and system moves without additional power consumption; When the photocell energy shortage, so that auxiliary source outage, at this moment, driving switch pipe Q2 drives blackout, the upper dump energy of Support Capacitor C2, C3 passes through resistance R 1, R2 dividing potential drop so that switching tube Q1 conducting, energy consumption resistor R3 forthright access circuit, photocell voltage is pulled down to below the auxiliary source cut-in voltage, the auxiliary source reliable turn-off; When illumination restoration when auxiliary source and energy consumption resistor power can be provided simultaneously, system restart, and recover normal.Resistance R 4 is in order to limit drive current.
Beneficial effect: the of the present utility model solution problem that photovoltaic DC-to-AC converter is restarted repeatedly, the on-off times of reduction equipment, extension device life-span.Increase simultaneously the usability of equipment.
Description of drawings
Fig. 1 is the theory diagram of the utility model system.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in more detail.
As shown in Figure 1, a kind of photovoltaic combining inverter is anti-restarts circuit, comprises photocell, auxiliary source, and light-coupled isolation drives, driving switch pipe Q2, switching tube Q1, energy consumption resistor R3, capacitor C 1, Support Capacitor C2, C3, resistance R 1, R2, R4.
Form the Q1 drive level after resistance R 1, the R2 series connection dividing potential drop, energy consumption resistor R3 is with after switching tube Q1 connects, and is in parallel with Support Capacitor C2, C3, photocell; Capacitor C 1, driving switch pipe Q2, resistance R 2 are connected in parallel.Be provided with resistance R 4 between driving switch pipe Q2 and switching tube Q1, auxiliary source is controlled the break-make of Q2 by optical couple isolation drive circuit, thereby reaches the purpose of control Q1.
When the photocell energy was sufficient, system normally moved, auxiliary source stable output voltage, and driving switch pipe Q2 conducting, then switching tube Q1 gate pole is pulled to zero level, and Q1 turn-offs; Energy consumption resistor R3 forthright is disconnected, and system moves without additional power consumption; When the photocell energy shortage, so that auxiliary source outage, at this moment, driving switch pipe Q2 drives blackout, the upper dump energy of Support Capacitor C2, C3 passes through resistance R 1, R2 dividing potential drop so that switching tube Q1 conducting, energy consumption resistor R3 forthright access circuit, photocell voltage is pulled down to below the auxiliary source cut-in voltage, the auxiliary source reliable turn-off; When illumination restoration when auxiliary source and energy consumption resistor power can be provided simultaneously, system restart, and recover normal.Resistance R 4 is in order to limit drive current.
The above is preferred embodiment of the present utility model only, is not restricted to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the claim scope of the present utility model.

Claims (1)

1. a photovoltaic combining inverter is prevented restarting circuit, it is characterized in that: comprise photocell, and auxiliary source, light-coupled isolation drives, driving switch pipe Q2, switching tube Q1, energy consumption resistor R3, capacitor C 1, Support Capacitor C2, C3, resistance R 1, R2, R4;
Form the Q1 drive level after resistance R 1, the R2 series connection dividing potential drop, energy consumption resistor R3 is with after switching tube Q1 connects, and is in parallel with Support Capacitor C2, C3, photocell; Capacitor C 1, driving switch pipe Q2, resistance R 2 are connected in parallel, and are provided with resistance R 4 between driving switch pipe Q2 and switching tube Q1, and auxiliary source is by the break-make of optical couple isolation drive circuit control Q2, thus control Q1;
When the photocell energy was sufficient, system normally moved, auxiliary source stable output voltage, and driving switch pipe Q2 conducting, then switching tube Q1 gate pole is pulled to zero level, and Q1 turn-offs; Energy consumption resistor R3 forthright is disconnected, and system moves without additional power consumption; When the photocell energy shortage, so that auxiliary source outage, at this moment, driving switch pipe Q2 drives blackout, the upper dump energy of Support Capacitor C2, C3 passes through resistance R 1, R2 dividing potential drop so that switching tube Q1 conducting, energy consumption resistor R3 forthright access circuit, photocell voltage is pulled down to below the auxiliary source cut-in voltage, the auxiliary source reliable turn-off; When illumination restoration when auxiliary source and energy consumption resistor power can be provided simultaneously, system restart, and recover normal, resistance R 4 is in order to limit drive current.
CN 201220603960 2012-11-16 2012-11-16 Restart prevention circuit for photovoltaic grid-connected inverter Expired - Fee Related CN202872632U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220603960 CN202872632U (en) 2012-11-16 2012-11-16 Restart prevention circuit for photovoltaic grid-connected inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220603960 CN202872632U (en) 2012-11-16 2012-11-16 Restart prevention circuit for photovoltaic grid-connected inverter

Publications (1)

Publication Number Publication Date
CN202872632U true CN202872632U (en) 2013-04-10

Family

ID=48039318

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220603960 Expired - Fee Related CN202872632U (en) 2012-11-16 2012-11-16 Restart prevention circuit for photovoltaic grid-connected inverter

Country Status (1)

Country Link
CN (1) CN202872632U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103227561A (en) * 2013-04-12 2013-07-31 深圳市汇川技术股份有限公司 Starting device and starting method of photovoltaic inverter
EP3026804A4 (en) * 2013-08-09 2016-11-09 Huawei Tech Co Ltd Starting circuit of photovoltaic inverter auxiliary power supply
CN108155635A (en) * 2016-12-05 2018-06-12 日本电产伺服有限公司 Protect circuit and motor unit
CN110474530A (en) * 2019-08-05 2019-11-19 苏州浪潮智能科技有限公司 A kind of capacitor charging control circuit
CN110474530B (en) * 2019-08-05 2021-10-01 苏州浪潮智能科技有限公司 Capacitor charging control circuit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103227561A (en) * 2013-04-12 2013-07-31 深圳市汇川技术股份有限公司 Starting device and starting method of photovoltaic inverter
CN103227561B (en) * 2013-04-12 2016-05-25 深圳市汇川技术股份有限公司 Photovoltaic DC-to-AC converter starting drive and method
EP3026804A4 (en) * 2013-08-09 2016-11-09 Huawei Tech Co Ltd Starting circuit of photovoltaic inverter auxiliary power supply
CN108155635A (en) * 2016-12-05 2018-06-12 日本电产伺服有限公司 Protect circuit and motor unit
CN110474530A (en) * 2019-08-05 2019-11-19 苏州浪潮智能科技有限公司 A kind of capacitor charging control circuit
CN110474530B (en) * 2019-08-05 2021-10-01 苏州浪潮智能科技有限公司 Capacitor charging control circuit

Similar Documents

Publication Publication Date Title
CN203537047U (en) Uninterrupted power source system capable of conducting intelligent double-input power supply
CN103545911A (en) Uninterrupted power system capable of conducting double-input intelligent power supply
CN202872632U (en) Restart prevention circuit for photovoltaic grid-connected inverter
CN102982781A (en) Drive circuit and drive method for liquid crystal display device and liquid crystal display device
CN102306485A (en) Light emitting diode (LED) driving circuit, liquid crystal display device and LED driving method
CN102869173A (en) Light-emitting diode (LED) drive power supply device
CN202488350U (en) Fly-back switching power supply circuit suitable for photovoltaic system
CN203632634U (en) Automatic outage delay starting device
CN103236733A (en) Electric bicycle charging device with functions of delaying time and powering off
CN203690895U (en) DC-DC boost short circuit protection circuit
CN203645622U (en) Solar photovoltaic DC controller
CN201466379U (en) Energy-saving power socket
CN203456880U (en) Intelligent control apparatus for solving problem of frequent morning-evening starting of photovoltaic grid-connected inverter
CN202004452U (en) Controllable discharge circuit for photovoltaic inverter
CN203217292U (en) State machine-based multifunctional electronic appliance control circuit
CN204030943U (en) Photovoltaic DC-to-AC converter starts control circuit
CN2884414Y (en) Automatic starting circuit for power-supply of color plasma display
CN102281683B (en) LED anti-flash circuit
CN203312903U (en) Diesel generator self-starting system with three switchable starting modes
CN105207535A (en) Intelligent control device for electric window openers
CN203366709U (en) Liquid crystal display screen dormancy control device applied for solar inverter
WO2017148241A1 (en) Inverter control method, device, and power generation system
CN203690983U (en) Highly effective solar traffic light
CN205610463U (en) Converter with power -fail protection
CN203690982U (en) Networking centralized control system for solar traffic light with dual power supplies

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130410

Termination date: 20151116

EXPY Termination of patent right or utility model