CN105306030A - Main power circuit for alternating current solid state power controller - Google Patents
Main power circuit for alternating current solid state power controller Download PDFInfo
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- CN105306030A CN105306030A CN201510870538.2A CN201510870538A CN105306030A CN 105306030 A CN105306030 A CN 105306030A CN 201510870538 A CN201510870538 A CN 201510870538A CN 105306030 A CN105306030 A CN 105306030A
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Abstract
The invention relates to a main power circuit for an alternating current solid state power controller. The main power circuit is used in a power distribution unit of vehicle-mounted equipment. The main power circuit comprises a first metal oxide semiconductor (MOS) tube, a second MOS tube and a current sampling resistor. A drain electrode of the first MOS tube is connected with an alternating current input power supply. A source electrode of the first MOS tube is connected with a first end of the current sampling resistor. A second end of the current sampling resistor is connected with a source electrode of the second MOS tube. A drain electrode of the second MOS tube is connected with a load. A grid of the first MOS tube is connected with a grid of the second MOS tube. The main power circuit has the advantages of simple circuit structure, small volume, and low heat quantity. The main power circuit is a solution to minimum breakover voltage drop.
Description
Technical field
The present invention relates to solid-state power controller SSPC, particularly a kind of main power circuit for alternating current solid-state power controller.
Background technology
Solid-state power controller SSPC(Solid-StatePowerController) be a kind of Intellectualized Switchgear of control switch break-make in solid state distribution system; it is indispensable power distribution equipment in airborne equipment; its function comprises the opening of load, turns off; on off state is uploaded, current value is uploaded, overcurrent protection etc.; it have contactless, without electric arc, noiseless, response is fast, electromagnetic interference is little, the life-span is long, reliability is high and be convenient to the advantages such as computer long-distance control, extensive use in flight sequencing.Current SSPC is because metal-oxide-semiconductor switch fabrication process problem, and volume is bigger than normal, and total number of channels is on the low side, and single channel current is large not, and heating problem is comparatively outstanding, and following SSPC development is mainly carried out to high-power, high integration small size, intelligent direction.
Summary of the invention
The object of the invention is to solve prior art Problems existing, a kind of main power circuit for alternating current solid-state power controller provided.
To achieve these goals, technical scheme of the present invention is achieved in that a kind of main power circuit for alternating current solid-state power controller, for in the power distribution equipment of airborne equipment, it is characterized in that, include, first metal-oxide-semiconductor, second metal-oxide-semiconductor, current sampling resistor, wherein, the drain electrode of described first metal-oxide-semiconductor connects alternating current input power supplying, the source electrode of described first metal-oxide-semiconductor connects the first end of described current sampling resistor, the source electrode of the second metal-oxide-semiconductor described in second termination of described current sampling resistor, the drain electrode of described second metal-oxide-semiconductor connects load, the grid of described first metal-oxide-semiconductor connects the grid of described second metal-oxide-semiconductor.
As a kind of preferred version of the main power circuit for alternating current solid-state power controller, also include, 3rd metal-oxide-semiconductor, wherein, the drain electrode of described 3rd metal-oxide-semiconductor connects the drain electrode of described first metal-oxide-semiconductor, the source electrode of described 3rd metal-oxide-semiconductor connects the source electrode of described first metal-oxide-semiconductor, and the grid of described 3rd metal-oxide-semiconductor connects the grid of described first metal-oxide-semiconductor.
As a kind of preferred version of the main power circuit for alternating current solid-state power controller, also include, 4th metal-oxide-semiconductor, wherein, the drain electrode of described 4th metal-oxide-semiconductor connects the drain electrode of described second metal-oxide-semiconductor, the source electrode of described 4th metal-oxide-semiconductor connects the source electrode of described second metal-oxide-semiconductor, and the grid of described 4th metal-oxide-semiconductor connects the grid of described second metal-oxide-semiconductor.
Compared with prior art, the present invention at least has the following advantages: circuit structure is simple, and small volume, caloric value is low, provides the solution of minimum conduction voltage drop.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of one embodiment of the invention.
Fig. 2 is the electrical block diagram of another embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is elaborated.
Refer to Fig. 1, shown in figure is a kind of main power circuit for alternating current solid-state power controller, in the power distribution equipment for airborne equipment, includes, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor and current sampling resistor.Wherein, the drain electrode of described first metal-oxide-semiconductor connects alternating current input power supplying, the source electrode of described first metal-oxide-semiconductor connects the first end of described current sampling resistor, the source electrode of the second metal-oxide-semiconductor described in second termination of described current sampling resistor, the drain electrode of described second metal-oxide-semiconductor connects load, and the grid of described first metal-oxide-semiconductor connects the grid of described second metal-oxide-semiconductor.
When the first metal-oxide-semiconductor and the second metal-oxide-semiconductor conducting, due to current sampling resistor having pressure drop, the gate drive voltage Ugs1 of the first metal-oxide-semiconductor and some difference of gate drive voltage Ugs2 of the second metal-oxide-semiconductor can be made like this, when SSPC works under rated condition, effective pressure drop on current sampling resistor is 50mV, when being short-circuited, effective pressure drop of current sampling resistor is also only 400mV, and duration of short circuit is very short, detecting ohmically pressure drop during normal work compares negligible with the driving voltage 12V of metal-oxide-semiconductor, current sampling resistor can not affect the driving of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor between the first metal-oxide-semiconductor and the second metal-oxide-semiconductor.
Because metal-oxide-semiconductor is two-way admittance device, when normally working, alternating voltage is when positive half cycle, and electric current flows to B point from A point, when alternating voltage is at negative half period, electric current flows to A point from B point, when the first metal-oxide-semiconductor and the second metal-oxide-semiconductor are in cut-off state, because parasitic diode D1 and D2 of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor is differential concatenation, therefore between the first metal-oxide-semiconductor and the second metal-oxide-semiconductor off period, on current sampling resistor, no current flows through, thus the function that realization is opened and closed.
Refer to Fig. 2, shown in figure is the another kind of main power circuit for alternating current solid-state power controller, for in the power distribution equipment of airborne equipment, include, first metal-oxide-semiconductor, second metal-oxide-semiconductor, current sampling resistor, 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor, wherein, the drain electrode of described first metal-oxide-semiconductor connects alternating current input power supplying, the source electrode of described first metal-oxide-semiconductor connects the first end of described current sampling resistor, the source electrode of the second metal-oxide-semiconductor described in second termination of described current sampling resistor, the drain electrode of described second metal-oxide-semiconductor connects load, the grid of described first metal-oxide-semiconductor connects the grid of described second metal-oxide-semiconductor.
Below only have expressed embodiments of the present invention, it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (3)
1. the main power circuit for alternating current solid-state power controller, for in the power distribution equipment of airborne equipment, it is characterized in that, include, first metal-oxide-semiconductor, the second metal-oxide-semiconductor, current sampling resistor, wherein, the drain electrode of described first metal-oxide-semiconductor connects alternating current input power supplying, the source electrode of described first metal-oxide-semiconductor connects the first end of described current sampling resistor, the source electrode of the second metal-oxide-semiconductor described in second termination of described current sampling resistor, the drain electrode of described second metal-oxide-semiconductor connects load, and the grid of described first metal-oxide-semiconductor connects the grid of described second metal-oxide-semiconductor.
2. a kind of main power circuit for alternating current solid-state power controller according to claim 1, it is characterized in that, also include, 3rd metal-oxide-semiconductor, wherein, the drain electrode of described 3rd metal-oxide-semiconductor connects the drain electrode of described first metal-oxide-semiconductor, and the source electrode of described 3rd metal-oxide-semiconductor connects the source electrode of described first metal-oxide-semiconductor, and the grid of described 3rd metal-oxide-semiconductor connects the grid of described first metal-oxide-semiconductor.
3. a kind of main power circuit for alternating current solid-state power controller according to claim 1 and 2, it is characterized in that, also include, 4th metal-oxide-semiconductor, wherein, the drain electrode of described 4th metal-oxide-semiconductor connects the drain electrode of described second metal-oxide-semiconductor, and the source electrode of described 4th metal-oxide-semiconductor connects the source electrode of described second metal-oxide-semiconductor, and the grid of described 4th metal-oxide-semiconductor connects the grid of described second metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510870538.2A CN105306030A (en) | 2015-12-02 | 2015-12-02 | Main power circuit for alternating current solid state power controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510870538.2A CN105306030A (en) | 2015-12-02 | 2015-12-02 | Main power circuit for alternating current solid state power controller |
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| CN105306030A true CN105306030A (en) | 2016-02-03 |
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| CN201510870538.2A Pending CN105306030A (en) | 2015-12-02 | 2015-12-02 | Main power circuit for alternating current solid state power controller |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107124168A (en) * | 2017-04-19 | 2017-09-01 | 广州视源电子科技股份有限公司 | A kind of isolated form electronic switching circuit |
| CN108233902A (en) * | 2017-12-29 | 2018-06-29 | 河南北瑞电子科技有限公司 | A kind of solid-state power controller |
| CN110417388A (en) * | 2019-08-02 | 2019-11-05 | 海宁昱能电子有限公司 | A kind of photovoltaic module switching off device and photovoltaic power generation safety system |
| CN111488027A (en) * | 2020-03-25 | 2020-08-04 | 天津航空机电有限公司 | Control method for 230V alternating current heating load of aircraft anti-icing system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107124168A (en) * | 2017-04-19 | 2017-09-01 | 广州视源电子科技股份有限公司 | A kind of isolated form electronic switching circuit |
| CN107124168B (en) * | 2017-04-19 | 2020-07-31 | 广州视源电子科技股份有限公司 | Isolated electronic switch circuit |
| CN108233902A (en) * | 2017-12-29 | 2018-06-29 | 河南北瑞电子科技有限公司 | A kind of solid-state power controller |
| CN110417388A (en) * | 2019-08-02 | 2019-11-05 | 海宁昱能电子有限公司 | A kind of photovoltaic module switching off device and photovoltaic power generation safety system |
| CN111488027A (en) * | 2020-03-25 | 2020-08-04 | 天津航空机电有限公司 | Control method for 230V alternating current heating load of aircraft anti-icing system |
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Application publication date: 20160203 |