CN105529742A - Environmental overload-resistant reverse isolation-type high-power power supply grid connection control method - Google Patents
Environmental overload-resistant reverse isolation-type high-power power supply grid connection control method Download PDFInfo
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- CN105529742A CN105529742A CN201610090478.7A CN201610090478A CN105529742A CN 105529742 A CN105529742 A CN 105529742A CN 201610090478 A CN201610090478 A CN 201610090478A CN 105529742 A CN105529742 A CN 105529742A
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- mechanical switch
- generator
- diode
- power supply
- control method
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides an environmental overload-resistant reverse isolation-type high-power power supply grid connection control method. According to the control method, a power supply positive line output by a generator is connected with an input end of a mechanical switch and an anode terminal of a diode; meanwhile, the mechanical switch is connected with the diode in parallel; an output end of the mechanical switch is connected with a cathode terminal of the diode in parallel and is connected to a bus bar; when the generator does not output a voltage, the mechanical switch is off, the diode is reversely isolated, the bus bar is separated from the generator and the voltage of the bus bar does not flow back to the generator; and after the generator normally builds the voltage, the mechanical switch is on, the diode is positively conducted and the generator begins to supply electric energy to the bus bar. The on-resistance of the mechanical switch is relatively low, so that most of current of the generator passes through the mechanical switch and is connected to the bus bar; a power supply grid connection control is formed by combining the mechanical switch with the diode; the control method has high environmental overload resistance on the basis of ensuring heavy-load power supply; and the diode lastingly connects a generating power supply and lastingly supplies electricity to a power supply line under the working conditions of high environmental overload and impact.
Description
Technical field
The present invention relates to large power supply cutting-in control technical field, particularly relate to the control method that a kind of resistance to environment overload reverse isolation type large power supply is grid-connected.
Background technology
In the design of electrical system of aeronautical product, power supply is needed to be connected to the grid according to sequential, common control method is that employing switch or multiple switch in parallel control power supply are incorporated to power supply busbar, switchtype is divided into again mechanical switch and solid switch, usually uses mechanical switch as on-off controller part in low-voltage high-current power source parallel network circuit.
And when the design of electrical system of aeronautical product, thermal cell and generator are incorporated to bus busbar simultaneously, operationally sequence there is certain overlapping power-on time, generator needs before building pressure to carry out reverse isolation, and because mechanical switch reliability is high, load capacity is strong, the heavy load job requirement needed for power-supplying circuit can be met, therefore have employed during system mechanical switch control generator connecting in parallel with system, generator build pressure complete after the mechanical switch connection of control, be product load supplying.But, mechanical switch anti-high environment overload and impact capacity poor, impact because being subject to high overload in process of the test, the inner reed of mechanical switch moves and causes product instant power-down, bad stability, undesirable; If use solid switch instead as cutting-in control device, then can not meeting spatial requirement because of heat dissipation design.
Summary of the invention
Technical problem solved by the invention is the control method providing a kind of resistance to environment overload reverse isolation type large power supply grid-connected, to solve the shortcoming in above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
The control method that a kind of resistance to environment overload reverse isolation type large power supply is grid-connected, first the power supply main track that generator exports is connected with mechanical switch input, diode anode end, simultaneously by mechanical switch and diodes in parallel, then access busbar by parallel with diode cathode end for mechanical switch output; When generator not output voltage time, mechanical switch disconnect, diode reverse isolate, busbar and generator disconnect, and Bus Voltage instead can not be poured into generator; After generator normally builds pressure, mechanical switch closes, diode forward conducting, generator starts as busbar provides electric energy, and because mechanical switch conducting resistance is less, generator major part electric current accesses busbar through mechanical switch, when running into high environment overload and impacting operating mode, even if contact chatter appears in mechanical switch, diode also can continue to connect generator power supply, to ensure that supply line is normal under bad working environments condition.
In the present invention, diode is provided with fin.
In the present invention, mechanical switch is provided with louvre.
In the present invention, the anti-high environment overload capacity of the band heavy load ability of mechanical switch, low on-resistance and diode, resistance to transient high-current ability are effectively combined, with the withstand large overload required by completing circuit, reverse isolation, powerful functional requirement;
Mechanical switch and diodes in parallel are to realize predetermined function, and when there is not high environment overload conditions, generator is powered to busbar mainly through the mechanical switch of low impedance path; When occurring high environment overload and impacting operating mode, if when mechanical switch occurs that inner contact jitterbug causes this road generator to access discontinuous, generator is that busbar is powered by diode; When pressure do not built by generator, during mechanical switch access failure, ensure that the voltage between busbar and generator is isolated by diode.
Beneficial effect: the present invention adopts mechanical switch to be combined with diode to form a kind of power grid and controls, ensureing the basis that heavy load is powered to possess anti-high environment overload capacity, simultaneously, when generator does not also build pressure, mechanical switch possesses reverse voltage isolation features when disconnecting, effectively solve and bearing high environment overload and impacting, during mechanical switch contact chatter, the continuity of low-voltage, high-current DC power supply.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of preferred embodiment of the present invention.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
See the control method that a kind of resistance to environment overload reverse isolation type large power supply of Fig. 1 is grid-connected, first the power supply main track that generator S exports is accessed mechanical switch K1 input and diode D1 anode tap respectively, mechanical switch K1 and diode D1 is in parallel simultaneously, then accesses busbar 4 by parallel with diode D1 cathode terminal for mechanical switch K1 output; When generator S does not export, mechanical switch K1 disconnects, diode D1 reverse isolation, and busbar 4 voltage instead can not be poured into generator S; After generator S normally builds pressure, mechanical switch K1 closes, diode D1 forward conduction, generator S starts as busbar 4 provides electric energy, and because mechanical switch K1 conducting resistance is less, generator S major part electric current accesses busbar 4 through mechanical switch K1, when running into high environment overload and impacting operating mode, even if contact chatter appears in mechanical switch K1, diode D1 also can continue to connect generator S power supply, to ensure that supply line is normal under bad working environments condition.
In the present embodiment, the anti-high environment overload capacity of the band heavy load ability of mechanical switch K1, low on-resistance and diode D1, resistance to transient high-current ability are effectively combined, with the withstand large overload required by completing circuit, reverse isolation, powerful functional requirement, thus ensure also not build pressure as generator S, possess reverse voltage isolation features when mechanical switch K1 disconnects; And mechanical switch K1 is in parallel with diode D1 to realize predetermined function, when not occurring high environment overload conditions, generator S powers to busbar 4 mainly through the mechanical switch K1 of low impedance path; When there is high environment overload and impacting operating mode, if when mechanical switch K1 occurs that inner contact jitterbug causes this road generator S to access discontinuous, generator S is that busbar 4 is powered by diode D1, utilize the high-power load capacity of diode D1 transient state and anti-high environment overload capacity characteristic, ensure the continuity that generator S powers.When generator S does not build pressure, during mechanical switch K1 access failure, ensure that the voltage between busbar 4 and generator S is isolated by diode D1.
In the present embodiment, when diode D1 and mechanical switch K1 type selecting, according to confession electric loading and the environment for use of reality, to ensure that its performance parameter meets electrical property and environmental performance demand, and diode D1 and mechanical switch K1 is installed and dispelled the heat, diode D1 is provided with fin, mechanical switch K1 is provided with louvre.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (3)
1. the control method that a resistance to environment overload reverse isolation type large power supply is grid-connected, it is characterized in that, first the power supply main track that generator exports is connected with mechanical switch input, diode anode end, simultaneously by mechanical switch and diodes in parallel, then access busbar by parallel with diode cathode end for mechanical switch output; When generator not output voltage time, mechanical switch disconnect, diode reverse isolate, busbar and generator disconnect, and Bus Voltage can not instead be filled with to generator; After generator normally builds pressure, mechanical switch closes, diode forward conducting, generator starts as busbar provides electric energy, because mechanical switch conducting resistance is less, generator major part electric current accesses busbar through mechanical switch, when running into high environment overload and impacting operating mode, diode continues to connect generator power supply, to ensure that supply line is normal.
2. the control method that a kind of resistance to environment overload reverse isolation type large power supply according to claim 1 is grid-connected, is characterized in that, diode is provided with fin.
3. the control method that a kind of resistance to environment overload reverse isolation type large power supply according to claim 1 is grid-connected, is characterized in that, mechanical switch is provided with louvre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090478.7A CN105529742A (en) | 2016-02-18 | 2016-02-18 | Environmental overload-resistant reverse isolation-type high-power power supply grid connection control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090478.7A CN105529742A (en) | 2016-02-18 | 2016-02-18 | Environmental overload-resistant reverse isolation-type high-power power supply grid connection control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105529742A true CN105529742A (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610090478.7A Pending CN105529742A (en) | 2016-02-18 | 2016-02-18 | Environmental overload-resistant reverse isolation-type high-power power supply grid connection control method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201717802U (en) * | 2010-07-05 | 2011-01-19 | 常熟开关制造有限公司(原常熟开关厂） | Reverse connection protection inverter circuit |
| CN102104274A (en) * | 2009-12-02 | 2011-06-22 | 技嘉科技股份有限公司 | Electronic device with battery parallel circuit |
| CN203278227U (en) * | 2013-05-22 | 2013-11-06 | 上海正泰电源系统有限公司 | Highly efficient anti-reverse combiner box circuit |
| CN203387164U (en) * | 2012-09-07 | 2014-01-08 | 欧姆龙株式会社 | Anti-reflux device and solar cell protection device |
| CN204045601U (en) * | 2011-10-28 | 2014-12-24 | 艾思玛太阳能技术股份公司 | Inverter |
-
2016
- 2016-02-18 CN CN201610090478.7A patent/CN105529742A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104274A (en) * | 2009-12-02 | 2011-06-22 | 技嘉科技股份有限公司 | Electronic device with battery parallel circuit |
| CN201717802U (en) * | 2010-07-05 | 2011-01-19 | 常熟开关制造有限公司(原常熟开关厂） | Reverse connection protection inverter circuit |
| CN204045601U (en) * | 2011-10-28 | 2014-12-24 | 艾思玛太阳能技术股份公司 | Inverter |
| CN203387164U (en) * | 2012-09-07 | 2014-01-08 | 欧姆龙株式会社 | Anti-reflux device and solar cell protection device |
| CN203278227U (en) * | 2013-05-22 | 2013-11-06 | 上海正泰电源系统有限公司 | Highly efficient anti-reverse combiner box circuit |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160427 |