CN103124066A - Short-circuit control for pulse power supply of high current - Google Patents
Short-circuit control for pulse power supply of high current Download PDFInfo
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- CN103124066A CN103124066A CN2011103727404A CN201110372740A CN103124066A CN 103124066 A CN103124066 A CN 103124066A CN 2011103727404 A CN2011103727404 A CN 2011103727404A CN 201110372740 A CN201110372740 A CN 201110372740A CN 103124066 A CN103124066 A CN 103124066A
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- current
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- power supply
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- threshold value
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention relates to a short-circuit control for pulse power supply of high currents, particularly to a power and circuit device and a control method. The power and circuit device includes a plurality of power supplies connected to a load through power channels and a controller. The controller is based on the detected load input currents to detect short-circuits in power supply.
Description
Technical field
The present invention relates to a kind of fault control for the high-current pulse power supply.
Background technology
In using battery or the application of other electrical storage devices as main power source, generally include to judge the short-circuit detecting that whether has short trouble in power supply.When short circuit being detected, short-circuit detecting circuit can also be with power supply and load isolation, thereby prevents the overload fault electric current that the load experience can the interference load operation.In addition, often comprise in order to continue to provide to load the stand-by power supply of power during with load isolation due to short trouble at main power source.The system of use stand-by power supply also comprises the testing circuit for detection of the short circuit in the stand-by power supply that connects.The structure to these systems that comprises of additional detection circuit has increased weight and cost.
When the output current that the current sensor of a kind of standard method for detecting short circuit use ﹠ Control device combination detects power supply surpasses current threshold.When output current surpassed current threshold, controller determined to exist short circuit and with isolated from power.This Threshold is the short circuit current of expection, and it is higher than the electric current that is used for standard operation.
Summary of the invention
A kind of method for controlling the high-current pulse power supply is disclosed.The method detects load current with current sensor; And when load current surpasses the current magnitude threshold value and reaches duration greater than overload current duration threshold value, with power supply and load isolation.
A kind of power circuit with the controller that is electrically coupled to switch driver is also disclosed.This power circuit also has a plurality of power channels, and each in described power channels is electrically coupled to this switch driver with one in a plurality of power supplys each that is connected in bearing power input and described power channels.Power circuit also has the current sensor of the bearing power of being connected to input and controller.This current sensor can detect the load input current and with this load input current controller of communicating by letter.
Can understand best these and other features of the present disclosure from hereinafter specification and accompanying drawing, be hereinafter concise and to the point description.
Description of drawings
Fig. 1 has schematically shown power circuit and the short-circuit detecting scheme for the electrical system with the stand-by power supply of advocating peace.
Fig. 2 is that diagram is for detection of the flow chart of the method for the short circuit in the high-current pulse power-supply system.
Embodiment
Some electrical systems are moved with the current impulse of high magnitude.In these systems, the short circuit current of expection can be lower than the value of high magnitude current impulse.When the electric current of expectation has magnitude of pulses over prospective short circuit current, the short-circuit detecting that known short-circuit detecting circuit can lead to errors.
Fig. 1 has schematically shown high-current pulse power circuit 100.Power circuit 100 comprises main power source 110 and pair (standby) power supply 120.Each in power supply 110,120 has the output power line 112,122 and can be the power supply of any known type of corresponding switch circuit of being connected to 130.In an example, each in power supply 110,120 is one or more batteries.With output power line 112,122 and the combination of switching circuit 130 be called power channels 116,126.Each in switching circuit 130 can be connected to the output power line 112,122 of correspondence the bearing power input 142 that power is provided to load 140.Switching circuit 130 is controlled by switch driver 150, and this switch driver 150 is then by microcontroller 160(alternately, is called controller 160) control.Electric current current sensor 170 monitoring flow into load 140 in bearing power input 142 in, and provide control signal 172 to microcontroller 160, thus provide to microcontroller 160 value that flows into the electric current in load 140.Each in power supply 110,120 also comprises the control connection 114,124 with microcontroller 160.Control connection 114,124 allows the power supply statistics of controller 160 detection such as dump powers.Controller 160 can also be controlled from power supply 110,120 power stage.
In standard operation, each power supply 110,120 is connected to load 140 via power channels 116,126.Switching device 130 in each power channels 116,126 is configured so that it can interrupt output power line 112,122.Each in power supply 110,120 is connected to bearing power input 142 by its corresponding power channels 116,126, thereby allows controller 160 with any power supply 110,120 isolation with short trouble.
When load 140 needs periodic high current loads spike (spike) to be used for normal running, standard short-circuit detecting technology will report an error to each current spike pulse mistakenly, and be therefore unsuitable.Instead, the controller shown in Fig. 1 160 utilizes current sensor 170 and a pair of current threshold to determine when and has short circuit.In the mode of example, current sensor 170 can be Hall effect transducer.
Whether value and definite this electric current that current sensor 170 detection bearing powers are inputted the electric current at 142 places surpass the current magnitude threshold value.This current magnitude Threshold is the short-circuit output current of expection, and as long as surpasses the short-circuit output current of this expection just report an error (trip).When surpassing the current magnitude threshold value, controller 160 determines how long surpass this current magnitude threshold value, and will be over duration and the overload current duration threshold of current magnitude threshold value.When current magnitude threshold value and duration threshold value all were exceeded, controller 160 determined to exist short trouble.Like this, controller 160 can with surpass power supply 110,120 prospective short circuit current expectation the high current loads spike with by power supply 110,120 or load 140 in the continuous fault electric current difference that causes of short circuit come.
By current sensor 170 being positioned at the load input, no matter current which power supply 110,120 is providing power to load 140, controller 160 all aligns the load current that is in operation and detects.In any system that comes with single power supply at the appointed time to power for load 140, this configuration all allows to control all power supplys 110,120 with single current sensor 170.Alternately, current sensor 170 can be positioned at each place in power supply output 112,122, and controller 160 has the nonshared control unit input for each current sensor 170.
In the example of Fig. 1, controller 160 is the microcontrollers able to programme with computer-readable medium, and this computer-readable medium can be stored for the instruction of carrying out hereinafter the method for describing about Fig. 2.This microcontroller 160 able to programme allows the user to revise electric current and duration threshold value based on the power demand of the load 140 that connects.If replace power supply 110,120 with substitute electric power (alternate power supply), if perhaps the bearing power of expectation distribution (profile) changes, Programmable Logic Controller allows to use identical control program.In the mode of example, if initial load needs the distribution of high electric current, extremely short pulse, controller 160 is programmed for and has high current magnitude threshold value and extremely low duration threshold value.Alternately, if load need to have the distribution of high electric current, moderate-length pulse, controller 160 is programmed for the duration threshold value with high current threshold and moderate-length.
Fig. 2 has schematically shown and has been used for the short-circuit detecting of application drawing 1 and the method 200 of protection scheme.At first method 200 140 provides power from main power source 110 to load in " providing power to load " step 210.In " detecting the input load electric current " step 220, the input load electric current measured by current sensor 170 and this measures electric current to controller 160 reports.Then in " input current surpasses threshold value? " in step 230, controller 160 determines whether this input load electric current surpasses scheduled current value threshold value.If do not surpass the current magnitude threshold value, the method restarts with " providing power to load " step 210.
If surpassed the current magnitude threshold value, in " startup duration counter " step 240, controller 160 starts duration counter.This duration counter can be to determine the input load electric current has surpassed current magnitude threshold value software counter how long.In " duration surpasses threshold value? " in step 250, controller 160 checks to judge whether the duration has surpassed overload current duration threshold value.If surpass this overload current duration threshold value, in " no longer surpassing the current magnitude threshold value? " in step 260, controller 160 determines whether still to surpass this current threshold.If no longer surpass the current magnitude threshold value, controller 160 restarts the method in " providing power to load " step 210.Temporary transient surpass the current magnitude threshold value, but the state that does not surpass overload current duration threshold value shows the high-current pulse with expectation, but not short trouble.
If still surpass the current magnitude threshold value, controller 160 continue to determine the duration of overload currents and turn back to " duration surpasses the current duration threshold value? " step 250." if the duration surpasses overload current duration threshold value? " step 250 determines that the duration of overload current has surpassed overload current duration threshold value, in " determining to exist short trouble " step 270, controller 160 is determined to have short trouble in power supply 110.
In case short trouble detected, in " power supply that isolation connects " step 280, controller 160 is just isolated main power source 110 and is used the process of above describing about Fig. 1 that stand-by power supply 120 is connected to input load power 142.Then in " connection stand-by power supply " step 290, controller 160 is connected to load 140 with stand-by power supply 120.Alternately, if when short trouble being detected, current connection be stand-by power supply 120, controller 160 can switch to main power source 110, perhaps with power supply 110,120 and load 140 isolate fully.
Be understood that those of skill in the art can reconfigure said method to adapt to the single load of a plurality of power supplys that have except main power source and stand-by power supply.
Although disclose example, what those skilled in the art will be familiar with is that specific modification will drop in the scope of the present disclosure.For this reason, reply claim hereinafter studies to determine true scope of the present disclosure and content.
Claims (17)
1. a method that is used for controlling the high-current pulse power supply, comprise the steps:
Detect load current with current sensor; And
When described load current surpasses the current magnitude threshold value and reaches duration greater than overload current duration threshold value, with power supply and load isolation.
2. method according to claim 1, wherein said step with described power supply and described load isolation further comprise the first switch block be set as off, thereby with the step of main power source and bearing power input isolation.
3. method according to claim 2, wherein said step with described power supply and described load isolation comprises that further with the second switch component settings be on, thereby stand-by power supply is connected to the step of described bearing power input.
4. method according to claim 3, the wherein said step that described stand-by power supply is connected to described bearing power input is carried out after described step with described main power source and described bearing power input isolation, thereby prevents that a plurality of power supplys are connected to described load simultaneously.
5. method according to claim 1, the step of the described load current of wherein said detection comprise with hall effect current sensors comes load current on sensing bearing power input line.
6. method according to claim 1, the wherein said controller that when described load current surpasses described current magnitude threshold value and reaches described duration greater than described overload current duration threshold value, the step of described power supply and described load isolation is further comprised when described current magnitude startup duration counter during over described current magnitude threshold value.
7. method according to claim 6, wherein said duration and the described overload current duration threshold that when described load current surpasses described current magnitude threshold value and reaches described duration greater than described overload current duration threshold value, the step of described power supply and described load isolation is further comprised described duration counter, thus when definite described load current reaches described duration greater than the described overload current duration over described current magnitude threshold value.
8. method according to claim 6, wherein said duration counter comprises the controller software module.
9. method according to claim 1, wherein said current magnitude threshold value are approximately equal to or greater than the short-circuit current of expection.
10. method according to claim 1, wherein said overload current duration threshold value is at least the current impulse duration of expectation.
11. a power circuit comprises:
Controller, it is electrically coupled to switch driver;
A plurality of power channels, each in described power channels is connected to described switch driver with one in a plurality of power supplys each that is connected in bearing power input and described power channels; And
Current sensor, it is connected to the input of described bearing power and described controller, makes described current sensor can detect the load input current and with the described load input current described controller of communicating by letter.
12. power circuit according to claim 11, each in wherein said power channels comprise the output power of power supply line and can interrupt the power switch of described output power of power supply line.
13. power circuit according to claim 12, each in wherein said power switch comprise mos field effect transistor (MOSFET)/double diode array.
14. power circuit according to claim 11, wherein said controller comprises microcontroller able to programme.
15. power circuit according to claim 14, wherein said microcontroller able to programme comprises that further storage is used for causing described controller to carry out the computer-readable medium of the instruction of following steps: detect load current and when load current reaches duration greater than overload current duration threshold value over the current magnitude threshold value, with power supply and load isolation with current sensor.
16. power circuit according to claim 14, wherein said microcontroller able to programme further comprises the software continuous time counter.
17. power circuit according to claim 11, each in wherein said power supply is electrically coupled to described controller via control connection, thereby allows each in the described power supply of described controller control.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103727404A CN103124066A (en) | 2011-11-21 | 2011-11-21 | Short-circuit control for pulse power supply of high current |
| CN201710348315.9A CN107181235A (en) | 2011-11-21 | 2011-11-21 | Fault control for high-current pulse power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103727404A CN103124066A (en) | 2011-11-21 | 2011-11-21 | Short-circuit control for pulse power supply of high current |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710348315.9A Division CN107181235A (en) | 2011-11-21 | 2011-11-21 | Fault control for high-current pulse power supply |
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| Publication Number | Publication Date |
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| CN103124066A true CN103124066A (en) | 2013-05-29 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103727404A Pending CN103124066A (en) | 2011-11-21 | 2011-11-21 | Short-circuit control for pulse power supply of high current |
| CN201710348315.9A Pending CN107181235A (en) | 2011-11-21 | 2011-11-21 | Fault control for high-current pulse power supply |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710348315.9A Pending CN107181235A (en) | 2011-11-21 | 2011-11-21 | Fault control for high-current pulse power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103634997A (en) * | 2013-12-13 | 2014-03-12 | 灿瑞半导体(上海)有限公司 | Detection protection circuit for output short circuit of light-emitting diode (LED) drive chip and method thereof |
| CN103634996A (en) * | 2013-12-13 | 2014-03-12 | 灿瑞半导体(上海)有限公司 | Detection and protection circuit for LED (light-emitting diode) short circuit of LED driving chip and method of detection and protection circuit |
| CN111194411A (en) * | 2017-10-30 | 2020-05-22 | 伊顿智能动力有限公司 | Method and apparatus for measuring expected short circuit current |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687567B (en) * | 2019-01-25 | 2022-08-16 | 中国船舶重工集团公司第七0九研究所 | Novel redundant power supply system |
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| US4024437A (en) * | 1974-11-14 | 1977-05-17 | Sony Corporation | D.C. power supply circuit |
| US6130813A (en) * | 1999-01-11 | 2000-10-10 | Dell U.S.A., L.P. | Protection circuit for electronic devices |
| CN1909315A (en) * | 2005-08-02 | 2007-02-07 | 艾默生网络能源系统有限公司 | Multi-output power supply and overcurrent detection and protection method thereof |
| US20100085674A1 (en) * | 2006-09-29 | 2010-04-08 | Martins Carlos E | Hardware Based Over-Current Protection Circuitry for Power Distribution Systems |
| US7893560B2 (en) * | 2008-09-12 | 2011-02-22 | Nellcor Puritan Bennett Llc | Low power isolation design for a multiple sourced power bus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101336399B (en) * | 2006-02-02 | 2011-07-06 | 汤姆逊许可公司 | Two level current limiting power supply system |
| US7848074B2 (en) * | 2007-08-28 | 2010-12-07 | Astec International Limited | Electronic circuit breaker and method |
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2011
- 2011-11-21 CN CN2011103727404A patent/CN103124066A/en active Pending
- 2011-11-21 CN CN201710348315.9A patent/CN107181235A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4024437A (en) * | 1974-11-14 | 1977-05-17 | Sony Corporation | D.C. power supply circuit |
| US6130813A (en) * | 1999-01-11 | 2000-10-10 | Dell U.S.A., L.P. | Protection circuit for electronic devices |
| CN1909315A (en) * | 2005-08-02 | 2007-02-07 | 艾默生网络能源系统有限公司 | Multi-output power supply and overcurrent detection and protection method thereof |
| US20100085674A1 (en) * | 2006-09-29 | 2010-04-08 | Martins Carlos E | Hardware Based Over-Current Protection Circuitry for Power Distribution Systems |
| US7893560B2 (en) * | 2008-09-12 | 2011-02-22 | Nellcor Puritan Bennett Llc | Low power isolation design for a multiple sourced power bus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103634997A (en) * | 2013-12-13 | 2014-03-12 | 灿瑞半导体(上海)有限公司 | Detection protection circuit for output short circuit of light-emitting diode (LED) drive chip and method thereof |
| CN103634996A (en) * | 2013-12-13 | 2014-03-12 | 灿瑞半导体(上海)有限公司 | Detection and protection circuit for LED (light-emitting diode) short circuit of LED driving chip and method of detection and protection circuit |
| CN103634997B (en) * | 2013-12-13 | 2015-11-11 | 灿瑞半导体(上海)有限公司 | The detection protective circuit of LED drive chip output short-circuit and method thereof |
| CN111194411A (en) * | 2017-10-30 | 2020-05-22 | 伊顿智能动力有限公司 | Method and apparatus for measuring expected short circuit current |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107181235A (en) | 2017-09-19 |
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