CN202522954U - Alternating-current solid-state power controller - Google Patents
Alternating-current solid-state power controller Download PDFInfo
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- CN202522954U CN202522954U CN2012201590178U CN201220159017U CN202522954U CN 202522954 U CN202522954 U CN 202522954U CN 2012201590178 U CN2012201590178 U CN 2012201590178U CN 201220159017 U CN201220159017 U CN 201220159017U CN 202522954 U CN202522954 U CN 202522954U
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Abstract
The utility model discloses a power distribution control device of an alternating-current power system used in the fields of airplanes, ships, vehicles, industrial automation and the like, and particularly discloses an alternating current solid state power controller. The alternating current solid state power controller comprises a power switch loop and a control module, wherein the control module comprises a micro controller, a polarity circuit and a driving circuit; the polarity circuit is connected with the micro controller; the micro controller is connected with the driving circuit; and the driving circuit is connected with the power switch loop. The alternating-current solid-state power controller receives a control instruction of an upper computer through a serial communication bus in a region where electric equipment is relatively concentrative, and locally distributes electric energy of a power supply bus bar to the electric equipment, so that the length and the weight of a feed cable are greatly reduced; moreover, a plurality of solid-state power controllers can share a same communication bus, so that a wire of a power supply coil of the conventional relay is eliminated, and the control power consumption is greatly reduced.
Description
Technical field
The utility model relates to a kind of distribution control device that is used for field AC power supply systems such as aircraft, naval vessel, vehicle, industrial automation, especially a kind of alternating current solid-state power controller.
Background technology
Present generation aircraft, boats and ships, vehicle have been tending towards many electric control or have been controlled by electricity fully, and consumer increases day by day, and be also increasingly high to the requirement of power supply-distribution system.The tradition distribution system adopts panel, fuse, mechanical relay, isolating switch and feed wire to form current supply circuit, belongs to the centralized power distribution mode.Under the more situation of load number, have following shortcoming: complex operation is complicated, takies more task time of crew; The power supply coil power dissipation is big; Turn on and off not zero passage of moment point, the contact arcing very easily produces electromagnetic interference (EMI), and age limit is arranged; Not intelligent, can't realize automatic control, redundant power supply and fault tolerant electrical power supply; Isolating switch overcurrent protection characteristic only is applicable to the load of specific current value; Whole distribution system maintainability is poor, and maintenance cost is high; Service cable quantity is many, runs through long, causes electric power system weight big, and maneuvering characteristics and load-carrying, the especially aircraft etc. that influence charging appliance require relatively stricter charging appliance to weight.
The utility model content
The utility model purpose is to provide a kind of alternating current solid-state power controller, and it realizes distribution control to above-mentioned defective with solid-state power switch and computer technology, forms the solid-state power controller with standalone feature.
The purpose of the utility model realizes through following circuit; It comprises: power switch loop and control module; Said control module comprises microcontroller, polar circuit and driving circuit; Polar circuit connects microcontroller, and microcontroller connects driving circuit, and driving circuit connects the power switch loop.
Said microcontroller connects the PERCOM peripheral communication isolating interface.
Said microcontroller connects logic array; Polar circuit comprises polarity of voltage circuit and current polarity circuit; Polarity of voltage circuit and current polarity circuit are connected 2 input ends of logic array respectively; Driving circuit comprises: first driving circuit and second driving circuit, and 2 output terminals of logic array connect first driving circuit and second driving circuit respectively, and the polarity of voltage circuit connects bus-bar input end and bus-bar center line respectively.
Said power switch loop comprises: wire pin in power flow concentration bar input pin, power switch, power output pin and the power power-supply; Power switch is that 2 MOSFET are respectively first FET and second FET; The source electrode of first FET and second FET links together; First FET connects first driving circuit, and second FET connects second driving circuit.
Be in series with sampling resistor between said first FET and second FET; Sampling resistor parallel-current sample circuit; Current sampling circuit connects the input end of short circuit comparator circuit and microcontroller; Voltage reference circuit connects relatively circuit input end of short-circuit current, and the short-circuit current relatively output terminal of circuit connects logic array.
Another input end of said logic array connects the power supply status circuit.
Another input end of said microcontroller connects voltage collection circuit.
Said logic array connects override switch isolation interface.
Said microcontroller connects the output isolating interface of reporting to the police.
The utility model is in the comparatively concentrated zone of consumer; Receive the host computer steering order through serial communication bus; The power distribution of bus-bar of will supplying power is nearby given consumer, reduces the length and the weight of feeder cable greatly, and a plurality of solid-state power controller can a shared communication bus; Save the lead of traditional relay power supply coil, greatly reduced the control power consumption.Simultaneously the utility model as power switch, has avoided traditional relay at the electric arc of opening or the mechanical contact action produces during disconnecting consumers with FET, has thoroughly eliminated electromagnetic interference (EMI).The microcontroller that the utility model is inner; It is able to programme to carry out overload protection characteristics; Satisfy the overcurrent protection requirement of 20%～100% rated current scope load; But also the controlling bus running status, normally open or off-state, overcurrent or short-circuit protection state, bus-bar open circuit or off state and output voltage, through bus feedback BIT result, be convenient to crew's monitoring in real time and recording unit state to adopt an effective measure; Also the quick fault location of convenient for maintaining personnel significantly reduces maintenance cost and promotes efficient.The utility model also has robustness, under the situation that externally communication bus or inner microcontroller lost efficacy, can surmount control to power switch through the override input pin, promptly opens by force or the switch-off power switch.
Description of drawings
Fig. 1 is the utility model theory diagram.
Fig. 2 is the utility model inverse time-lag protection curve.
Fig. 3 is the normal operational scheme of the utility model.
Embodiment
Elaborate below in conjunction with the implementation method of accompanying drawing to the utility model.
Comprise like Fig. 1 the utility model: power switch loop 1 and control module 9; Said control module comprises microcontroller 13, polar circuit and driving circuit; Polar circuit connects microcontroller; Microcontroller connects driving circuit, and driving circuit connects the power switch loop, and said microcontroller connects PERCOM peripheral communication isolating interface 16.Said microcontroller 13 connects logic array 14; Polar circuit comprises: polarity of voltage circuit 18 and current polarity circuit 23; Polarity of voltage circuit and current polarity circuit are connected 2 input ends of logic array respectively; Driving circuit comprises: first driving circuit 19 and second driving circuit 20, and 2 output terminals of logic array connect first driving circuit 19 and second driving circuit 20 respectively, and the polarity of voltage circuit connects bus-bar input end 4 and bus-bar center line 6 respectively.The power switch loop comprises: wire pin 6 in power flow concentration bar input pin 4, power switch, power output pin 5 and the power power-supply.Said power switch is that 2 MOSFET are respectively first FET 2 and second FET 3.The source electrode of first FET 2 and second FET 3 links together, and first FET 2 connects first driving circuit, 19, the second FETs 3 and connects second driving circuit 20.Be in series with sampling resistor 8 between said first FET 2 and second FET 3; Sampling resistor parallel-current sample circuit 21; Current sampling circuit 21 connects the input end of short circuit comparator circuit 22 and microcontroller; Voltage reference circuit 12 connects relatively circuit input end of short-circuit current, and the short-circuit current relatively output terminal of circuit connects logic array.An input end of said logic array connects power supply status circuit 24.An input end of said microcontroller connects voltage collection circuit 25.Another input end of said logic array connects power supply status circuit 24.Another input end of said microcontroller connects voltage collection circuit.Said logic array connects override switch isolation interface 15.Said microcontroller connects the output isolating interface 17 of reporting to the police.
The effect of power switch is the output signal of response first driving circuit 19 and second driving circuit 20, and the bus-bar input Power Distribution of will supplying power is given with electric loading 7, and power division is divided into the two kinds of forms that are switched on or switched off.The unilateal conduction characteristic of the parasitic diode of first FET 2 and second FET, 3 inside is opened first FET 2 and second FET 3 successively in conjunction with the voltage-phase of power flow concentration bar input 4, realizes that natural zero-crossing is open-minded.Polarity of voltage sample circuit 18 is gathered the phase place zero cross signal of 6 voltages of wire pin in power flow concentration bar input pin 4 and the power power-supply, exports logic array 14 to, and signal to the first driving circuit 19 and second driving circuit 20 are opened in output after logic determines.Bus-bar instantaneous voltage when solid-state power controller is opened like this is merely the pressure drop of a PN junction, much smaller than the 6V of standard code.And power switch is when turn-offing; Current polarity sample circuit 23 is gathered the phase place zero cross signal of loop of power circuit electric current; Export logic array 14 to, through with the cut-off signals logic determines after output cut-off signals to the first driving circuit 19 and second driving circuit 20, realize the shutoff of electric current natural zero-crossing.
After first driving circuit 19 and second driving circuit 20 receive that through the PERCOM peripheral communication isolating interface connection signal is opened first FET 2 and second FET 3; Loop of power circuit just produces electric current; And this electric current forms voltage on sampling resistor 8, and this voltage directly gets into short-circuit current comparison circuit 22 and is used to judge whether the power switch loop exists short circuit.If have short circuit in the power switch loop; Then short circuit comparator circuit 22 produces short-circuit signal and delivers to logic array 14 in the back with the voltage ratio of voltage reference circuit 12; Logic array 14 latchs short-circuit signal and trigger short-circuit protection mechanism, and output cut-off signals to the first driving circuit 19 and second driving circuit 20 are to cut off first FET 2 and second FET 3; If sampled voltage is less than reference voltage; Then current sampling circuit 21 is input to of microcontroller 13 after with this voltage signal acquisition and gathers port; The inner AD modular converter of microcontroller carries out obtaining after Analog-digital is changed the precise number value of electric current in the power switch loop; Calculating judges whether to launch the overcurrent protection program with respect to the multiple of rated current.The mathematical model of overcurrent protection program is inverse time-lag protection curve (I2t curve), and is as shown in Figure 2.When actual current be rated current more than 1.25 times the time; The utility model gets into delay procedure; If current sampling data is lasting constant in the time-delay process, then, send cut-off signals to driving circuit 19,20 with rupturing duty switch 2,3 in the moment that the time delays of pressing the I2t curve arrives; If in the time-delay process, actual current increases, and then delay time shortens; If in the time-delay process, actual current drops to below 1.25 times of rated current, then jumps out inverse time-lag protection.
Under normal operating condition, microcontroller 13 connects outside serial communication bus through the PERCOM peripheral communication isolating interface, receives the steering order of outside host computer.Serial communication bus is configured to three and selects a form, and alternative communication mode has SCI, SPI and I2C.The bus communication mode of the utility model acquiescence is SCI, and the baud rate of communication is 19200bps, adopts odd.The user then needs to import corresponding configuration order according to communication protocol if need other working methods of configuration, just can use after the configuration successful.Isolate with PERCOM peripheral communication isolating interface 16 between the communication of inside and outside.Relative normal operating condition; The utility model also is provided with the override state; Promptly under the situation that communication line lost efficacy or microcontroller 13 lost efficacy; The user can directly control first FET 2 and second FET 3 through override switch isolation interface 15, and the override signal is through override switch isolation interface 15 and external isolation.It is affected that the priority of override operation is higher than bus communication, and microcontroller 13 is resolved after receiving the PC control instruction, outputs to logic array 14 then and carries out logical process, and logical process result exports first driving circuit 19 and second driving circuit 20 to.
When first FET 2 and second FET 3 are had no progeny because of short circuit or overcurrent close; Microcontroller 13 is gathered short-circuit signal, over-current signal, drive signal and steering order; To the output isolating interface 17 of reporting to the police, the output isolating interface 17 of reporting to the police can connect the alarm indicator indication or use the discrete magnitude acquisition interface logic array according to pre-set programs output trip operation signal.After this as if connecting load once more, only need elder generation to send ON-and OFF-command to the microcontroller of the utility model, the once connection order of redispatching can be accomplished homing action to the utility model.
The utility model provides three kinds of products from detecting (BIT) mode: the BIT that powers on, BIT and safeguard BIT continuously provide in situ detection and off normal detection.Except above-mentioned short circuit, over current fault detected, the utility model can also provide bus communication state-detection, driving circuit to detect, the power flow concentration bar state detects and power output detects.The control signal level of microcontroller 13 real-time collection first driving circuits 19 and 20 outputs of second driving circuit in conjunction with the host computer order, feed back effective/invalid connection and reach effectively/invalid off-state.Power supply status circuit 24 monitoring power supply in real time bus-bar input voltage; Voltage is equal to or greater than the setting threshold values; Power supply status circuit 24 produces useful signal and outputs to microcontroller 13; Otherwise the bus-bar input voltage is less than threshold values, and power supply status circuit 24 produces has invalid signals to output to microcontroller 13.5 voltage on the power output pin that voltage sampling circuit 25 collection load in real time 7 connects, the result delivers to the AD port of microcontroller 13 and changes, and the result after the conversion reports through communication bus.When two or more the utility model can parallel connection use powering load, wherein one the tunnel lost efficacy and can launch other solid-state power controller and continue powering load.Under the situation of consumer enormous amount, the very big mission reliability of the raising equipment of degree.
The utility model as shown in Figure 3 in use, microcontroller at first receives the operational order that host computer sends; When detecting switch command, then open first FET and second FET successively, when detected order is not switch command, then carry out other operational orders; Judge that then the switch loop is short circuit, if reclosing operation is promptly carried out in short circuit then carry out short circuit and handle; Judge at last whether the switch loop transships, if overload then transship processings, the power switch loop is closed in the calculating of promptly transshipping.
Claims (9)
1. alternating current solid-state power controller; Comprise: power switch loop (1) and control module (9); It is characterized in that: said control module comprises microcontroller (13), polar circuit and driving circuit; Polar circuit connects microcontroller, and microcontroller connects driving circuit, and driving circuit connects the power switch loop.
2. a kind of alternating current solid-state power controller according to claim 1 is characterized in that: said microcontroller connects PERCOM peripheral communication isolating interface (16).
3. a kind of alternating current solid-state power controller according to claim 1 and 2; It is characterized in that: said microcontroller connects logic array (14); Polar circuit comprises polarity of voltage circuit (18) and current polarity circuit (23); Polarity of voltage circuit and current polarity circuit are connected 2 input ends of logic array respectively; Driving circuit comprises: first driving circuit (19) and second driving circuit (20), and 2 output terminals of logic array connect first driving circuit and second driving circuit respectively, and the polarity of voltage circuit connects bus-bar input end (4) and bus-bar center line (6) respectively.
4. a kind of alternating current solid-state power controller according to claim 3; It is characterized in that: said power switch loop comprises: wire pin (6) in power flow concentration bar input pin (4), power switch, power output pin (5) and the power power-supply; Power switch is that 2 MOSFET are respectively first FET (2) and second FET (3); The source electrode of first FET (2) and second FET (3) links together; First FET connects first driving circuit, and second FET connects second driving circuit.
5. a kind of alternating current solid-state power controller according to claim 4; It is characterized in that: be in series with sampling resistor (8) between said first FET (2) and second FET (3); Sampling resistor parallel-current sample circuit (21); Current sampling circuit connects the input end of short circuit comparator circuit (22) and microcontroller, and voltage reference circuit (12) connects relatively circuit input end of short-circuit current, and the short-circuit current relatively output terminal of circuit connects logic array.
6. a kind of alternating current solid-state power controller according to claim 5 is characterized in that: another input end of said logic array connects power supply status circuit (24).
7. a kind of alternating current solid-state power controller according to claim 5 is characterized in that: another input end of said microcontroller connects voltage collection circuit (25).
8. a kind of alternating current solid-state power controller according to claim 5 is characterized in that: said logic array connects override switch isolation interface (15).
9. a kind of alternating current solid-state power controller according to claim 5 is characterized in that: said microcontroller connects the output isolating interface (17) of reporting to the police.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201590178U CN202522954U (en) | 2012-04-16 | 2012-04-16 | Alternating-current solid-state power controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201590178U CN202522954U (en) | 2012-04-16 | 2012-04-16 | Alternating-current solid-state power controller |
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| CN202522954U true CN202522954U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012201590178U Expired - Fee Related CN202522954U (en) | 2012-04-16 | 2012-04-16 | Alternating-current solid-state power controller |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093146A (en) * | 2014-05-07 | 2015-11-25 | 哈尔滨飞机工业集团有限责任公司 | Low-voltage detector tester |
| CN105116759A (en) * | 2015-08-27 | 2015-12-02 | 南京航空航天大学 | Mixed signal state machine simulation model of AC solid state power controller |
| CN107681996A (en) * | 2017-10-26 | 2018-02-09 | 北京国科天宏自动化技术有限公司 | A kind of solid-state relay |
-
2012
- 2012-04-16 CN CN2012201590178U patent/CN202522954U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093146A (en) * | 2014-05-07 | 2015-11-25 | 哈尔滨飞机工业集团有限责任公司 | Low-voltage detector tester |
| CN105116759A (en) * | 2015-08-27 | 2015-12-02 | 南京航空航天大学 | Mixed signal state machine simulation model of AC solid state power controller |
| CN105116759B (en) * | 2015-08-27 | 2017-09-05 | 南京航空航天大学 | A kind of mixed signal state machine emulation mode of alternating current solid-state power controller |
| CN107681996A (en) * | 2017-10-26 | 2018-02-09 | 北京国科天宏自动化技术有限公司 | A kind of solid-state relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI HYJAS ELECTRONCIS CO., LTD. Free format text: FORMER OWNER: SHANGHAI ZUNRUI ELECTRONICS CO., LTD. Effective date: 20150211 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201110 MINHANG, SHANGHAI TO: 200000 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150211 Address after: 200000 N3067 building, 3 building, Xincheng Road, 2 mud town, Shanghai, Pudong New Area Patentee after: Shanghai hyjas Electron Co., Ltd. Address before: 201110, room 1, building 6, building 4299, 10 Jin Du Road, Shanghai, Minhang District Patentee before: Shanghai Zunrui Electronic Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20200416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |