CN204465130U - A kind of emergency power system - Google Patents

A kind of emergency power system Download PDF

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Publication number
CN204465130U
CN204465130U CN201520130892.7U CN201520130892U CN204465130U CN 204465130 U CN204465130 U CN 204465130U CN 201520130892 U CN201520130892 U CN 201520130892U CN 204465130 U CN204465130 U CN 204465130U
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Prior art keywords
semiconductor
oxide
metal
electric capacity
inductance
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CN201520130892.7U
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Inventor
范小波
肖顿
肖学礼
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SHENZHEN SINEXCEL ELECTRIC CO., LTD.
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SHENZHEN CITY SHENGHONG ELECTRIC CO Ltd
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Abstract

The utility model discloses a kind of emergency power system, the method comprises: switching device shifter, is connected with civil power and ac output end; For export as voltage source when emergency service and at civil power normal power supply time the reversible transducer that exports as current source, be connected with switching device shifter; Battery, is connected with reversible transducer; For the controller controlled emergency power system, be connected with switching device shifter, reversible transducer and battery; Branch road checkout gear, is connected with controller and ac output end.Enforcement the beneficial effects of the utility model are, by adopting reversible transducer to realize the emergency service to load and the charging to battery, and reversible transducer can total power be battery charging, so, both save the cost of charger, power consumption and probability of malfunction, accelerate battery charge time again.

Description

A kind of emergency power system
Technical field
The utility model relates to mains-supplied technical field, particularly relates to a kind of emergency power system.
Background technology
EPS emergency power supply is mainly used in the work power supply of all kinds of building and fire-fighting is powered; Hospital safety is powered; The power supply of highway, tunnel, subway, light rail, civil airport; The power supply of electric power system; All kinds of can not the production of power-off, the power supply of experimental facilities.It is a kind of high-quality power supply that pure sine wave can be provided to load equipment.
EPS emergency power supply integrates inverter, charger and controller in the market, and internal system devises battery detecting, along separate routes measure loop.The operation principle block diagram of its critical piece is the structured flowchart of EPS emergency power supply in prior art see Fig. 1, Fig. 1.The feature of this system architecture contains independently charger part, and charger takies the certain cost of system and volume and efficiency losses etc., adds probability of malfunction simultaneously.In addition, this charger capabilities less (usual about 20%) usually, so battery charge time is longer.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of emergency power system, is intended to solve charger in prior art and takies the certain cost of system and volume and efficiency losses, failure rate is high, battery charge time is long technical problem.
The technical solution of the utility model realizes as follows:
A kind of emergency power system is provided, comprises:
Switching device shifter, is connected with civil power and ac output end;
For export as voltage source when emergency service and at civil power normal power supply time the reversible transducer that exports as current source, be connected with described switching device shifter;
Battery, is connected with described reversible transducer;
For the controller controlled described emergency power system, be connected with described switching device shifter, described reversible transducer and described battery;
Branch road checkout gear, is connected with described controller and described ac output end.
In emergency power system described in the utility model, described reversible transducer comprises:
Inverter, is connected with described controller;
Be controlled by described controller using the voltage source controlled circuit exported as voltage source, be connected with described inverter;
Be controlled by described controller using the current source controlled circuit exported as current source, be connected with described voltage source controlled circuit and described switching device shifter.
In emergency power system described in the utility model, described controller comprises:
Voltage control loop, is connected with described battery;
Current regulator, is connected with described voltage control loop;
First A-D converter, is connected with described current regulator;
Second A-D converter, is connected with described voltage control loop and described switching device shifter;
3rd A-D converter, is connected with described current regulator and described switching device shifter;
SPWM drives interface, is connected with described first A-D converter and described reversible transducer.
In emergency power system described in the utility model, described inverter comprises: the first electric capacity, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor, the 5th metal-oxide-semiconductor and the 6th metal-oxide-semiconductor; To each metal-oxide-semiconductor, the positive pole of body diode is connected to the source electrode of this metal-oxide-semiconductor, the negative pole of body diode is connected to the drain electrode of this metal-oxide-semiconductor, first metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor are connected with the drain electrode of the 5th metal-oxide-semiconductor and are connected to the positive pole of the first electric capacity, and the second metal-oxide-semiconductor, the 4th metal-oxide-semiconductor are connected with the source electrode of the 6th metal-oxide-semiconductor and are connected to the negative pole of the first electric capacity.
In emergency power system described in the utility model, described voltage source controlled circuit comprises: the first inductance, the second inductance, the 3rd inductance, the first resistance, the second resistance, the 3rd resistance, the second electric capacity, the 3rd electric capacity and the 4th electric capacity, described first inductance is connected between described first metal-oxide-semiconductor and the second metal-oxide-semiconductor, described second inductance is connected between described 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor, described 3rd inductance is connected between described 5th metal-oxide-semiconductor and the 6th metal-oxide-semiconductor, described first resistance is connected to described first inductance, described second resistance is connected to described second inductance, described 3rd resistance is connected to described 3rd inductance, described second electric capacity is connected to described first resistance, 3rd electric capacity and the 4th electric capacity, described 3rd electric capacity is connected to described second resistance and the 4th electric capacity, described 4th electric capacity is connected to described 3rd resistance.
In emergency power system described in the utility model, described current source controlled circuit comprises: the first impedance, the second impedance and the 3rd impedance; Described first impedance is connected to described second impedance and the 3rd impedance, and described second impedance is connected to the 3rd impedance.
Therefore, the beneficial effects of the utility model are, realize the emergency service to load and the charging to battery by adopting reversible transducer, and reversible transducer can total power be battery charging, so, both saved the cost of charger, power consumption and probability of malfunction, accelerated battery charge time again.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structured flowchart of EPS emergency power supply in prior art;
The structured flowchart of a kind of emergency power system that Fig. 2 provides for the utility model;
The circuit diagram of the reversible transducer that Fig. 3 provides for the utility model;
The structured flowchart of controller when reversible transducer exports as voltage source that Fig. 4 provides for the utility model;
The structured flowchart of controller when reversible transducer exports as current source that Fig. 5 provides for the utility model;
The flow chart of the control method of a kind of emergency power system that Fig. 6 provides for the utility model.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, describe contrast accompanying drawing in detail embodiment of the present utility model below.Should be appreciated that following explanation is only the concrete elaboration of the utility model embodiment, protection range of the present utility model should do not limited with this.
The utility model provides a kind of emergency power system 100, its object is to, and adopts reversible transducer 2 to replace inverter 21 of the prior art, decreases charger circuit, realize emergency service and battery 3 charge function.Namely in EPS, adopt reversible transducer 2 to realize the emergency service of load and the charging to battery 3, reversible transducer 2 possesses total power is simultaneously the ability that battery 3 charges, thus decreases the charging interval; Employing simultaneously for load and converter switch the switching device shifter 1 of power supply, can switch simultaneously, reaches the object of difunctional switching neatly between the voltage source and current source of reversible transducer 2.
See the structured flowchart of a kind of emergency power system 100 that Fig. 2, Fig. 2 provide for the utility model, this emergency power system 100 comprises:
Switching device shifter 1, is connected with civil power 200 and ac output end 300; Switching device shifter 1 can adopt the switch of machinery, also can adopt the switch of power electronic, and self can be adopted to control for its control mode or system controller 4 controls;
For export as voltage source when emergency service and at civil power 200 normal power supply time the reversible transducer 2 that exports as current source, be connected with described switching device shifter 1; Reversible transducer 2 can be three-phase, also can be single-phase, and the physical switch of converter also can be other power converter devices, and see the circuit diagram of the reversible transducer 2 that Fig. 3, Fig. 3 provide for the utility model, this reversible transducer 2 comprises:
Inverter 21, is connected with described controller 4; Described inverter 21 comprises: the first electric capacity 211, first metal-oxide-semiconductor 212, second metal-oxide-semiconductor 213, the 3rd metal-oxide-semiconductor 214, the 4th metal-oxide-semiconductor 215, the 5th metal-oxide-semiconductor 216 and the 6th metal-oxide-semiconductor 217; To each metal-oxide-semiconductor, the positive pole of body diode is connected to the source electrode of this metal-oxide-semiconductor, the negative pole of body diode is connected to the drain electrode of this metal-oxide-semiconductor, first metal-oxide-semiconductor 212, the 3rd metal-oxide-semiconductor 214 are connected with the drain electrode of the 5th metal-oxide-semiconductor 216 and are connected to the positive pole of the first electric capacity 211, and the second metal-oxide-semiconductor 213, the 4th metal-oxide-semiconductor 215 are connected with the source electrode of the 6th metal-oxide-semiconductor 217 and are connected to the negative pole of the first electric capacity 211.
Be controlled by described controller 4 using the voltage source controlled circuit 22 exported as voltage source, be connected with described inverter 21, described voltage source controlled circuit 22 comprises: the first inductance 221, second inductance 222, the 3rd inductance 223, first resistance 224, second resistance 225, the 3rd resistance 226, second electric capacity 227, the 3rd electric capacity 228 and the 4th electric capacity 229, described first inductance 221 is connected between described first metal-oxide-semiconductor 212 and the second metal-oxide-semiconductor 213, described second inductance 222 is connected between described 3rd metal-oxide-semiconductor 214 and the 4th metal-oxide-semiconductor 215, described 3rd inductance 223 is connected between described 5th metal-oxide-semiconductor 216 and the 6th metal-oxide-semiconductor 217, described first resistance 224 is connected to described first inductance 221, described second resistance 225 is connected to described second inductance 222, described 3rd resistance 226 is connected to described 3rd inductance 223, described second electric capacity 227 is connected to described first resistance 224, 3rd electric capacity 228 and the 4th electric capacity 229, described 3rd electric capacity 228 is connected to described second resistance 225 and the 4th electric capacity 229, described 4th electric capacity 229 is connected to described 3rd resistance 226.
Be controlled by described controller 4 using the current source controlled circuit 23 exported as current source, be connected with described voltage source controlled circuit 22 and described switching device shifter 1.Described current source controlled circuit 23 comprises: the first impedance 231, second impedance 232 and the 3rd impedance 233; Described first impedance 231 is connected to described second impedance 232 and the 3rd impedance 233, and described second impedance 232 is connected to the 3rd impedance 233.
Battery 3, is connected with described reversible transducer 2; For providing power supply when emergency service.
For the controller 4 controlled described emergency power system 100, be connected with described switching device shifter 1, described reversible transducer 2 and described battery 3; This controller 4 can be conventional PI control device 4, also can be other forms of electric current and voltage controller 4.See the structured flowchart of controller 4 when reversible transducer 2 exports as voltage source that Fig. 4, Fig. 4 provide for the utility model, described controller 4 comprises:
Voltage control loop 41, is connected with described battery 3;
Current regulator 42, is connected with described voltage control loop 41;
First A-D converter 43, is connected with described current regulator 42;
Second A-D converter 44, is connected with described voltage control loop 41 and described switching device shifter 1;
3rd A-D converter 45, is connected with described current regulator 42 and described switching device shifter 1;
SPWM drives interface 46, is connected with described first A-D converter 43 and described reversible transducer 2.
Branch road monitoring device 5, is connected with described controller 4 and described ac output end 300.
See the structured flowchart of controller 4 when reversible transducer 2 exports as current source that Fig. 5, Fig. 5 provide for the utility model, described controller 4 comprises:
Voltage control loop 41, is connected with described battery 3;
Current regulator 42, is connected with described voltage control loop 41;
First A-D converter 43, is connected with described current regulator 42;
3rd A-D converter 45, is connected with described current regulator 42 and described switching device shifter 1; Wherein, the second analog to digital converter 44 can add a switch, thus makes described voltage control loop 41 directly conducting external analog signal.
SPWM drives interface 46, is connected with described first A-D converter and described reversible transducer 2.
Branch road monitoring device 5, is connected with described controller 4 and described ac output end 300.For detection branch electric power thus supplied.Branch road monitoring device 5 is a kind of devices can judging branch trouble, and this device adopts high precision electric current transducer to detect, and is controlled by controller 4, and therefore process failure judgement accurately, reliable, sensitivity is higher.
The flow chart of the control method of a kind of emergency power system 100 provided for the utility model see Fig. 6, Fig. 6, this control method, provides as above-mentioned emergency power system 100, comprising:
S1, when emergency service, controller 4 controls reversible transducer 2 and exports, thus by battery 3 for the load of ac output end 300 provides electric energy as voltage source; Namely during emergency service, see Fig. 4, reversible transducer 2 exports as voltage source, and three-phase (or single-phase) voltage of product standard sine wave exports, for load provides electric energy; Now the control model of this reversible transducer 2 is voltage control, and control objectives is the output voltage of inverter 21.
S2, when civil power 200 normal power supply, described controller 4 controls switching device shifter 1 and connects civil power 200, thus by civil power 200 for the load of ac output end 300 provides electric energy; Switch operating logic switches for being interrupted or uninterruptedly switching.When civil power 200 normal power supply, also comprise:
Described controller 4 judges that whether civil power 200 voltage is normal, if normally, then the inverter 21 stop pulse input of described reversible transducer 2, is the load supplying of ac output end 300 by civil power 200, and connects described inverter 21 in described civil power 200.Namely, when civil power 200 is normal, switching device shifter 1 is connected civil power 200 and is inputted, and load is powered by civil power 200; Still keep being connected with reversible transducer 2, be its power supply simultaneously; Sequential logic is: judge that whether civil power 200 voltage U g is normal, if normally, then and inverter 21 locking pulse, then closed civil power 200 input switch, is load supplying by civil power 200; The now output of inverter 21 keeps being connected to above electrical network.
S3, described controller 4 control reversible transducer 2 and export as current source, thus are charged for described battery 3 by civil power 200.When civil power 200 is normal (above-mentioned steps S2 switches complete simultaneously), reversible transducer 2 carrys out work as current source, switching device shifter 1 is connected the civil power 200 of coming and carries out unit power factor rectifier, thus charge for battery 3, realize the function of charger; Now the control model of this reversible transducer 2 is that current source controls, and control objectives is the unity power factor of battery 3 side voltage (or charging current) and inverter side electric current, and when reversible transducer 2 exports as current source, controller 4 is see Fig. 5.Reversible transducer 2 for battery 3 charge time, with the total power of converter, battery 3 can be charged, thus can more rapidly time battery 3 be full of electricity (faster than conventional charger 3 ~ 4 times).
S4, when civil power 200 power down, described reversible transducer 2 is exported by current source and is converted to voltage source and exports, thus by described battery 3 for the load of ac output end 300 provides electric energy.When civil power 200 power down, also comprise:
Described controller 4 judges that whether civil power 200 voltage is normal, if abnormal, then the inverter 21 stop pulse input of described reversible transducer 2, is the load supplying of ac output end 300 by battery 3, and is disconnected by described civil power 200.Namely during civil power 200 suddenly power down, reversible transducer 2 realizes by the transformation of current control mode to voltage mode control, and switching device shifter 1 switches to inverter 21 side simultaneously, and realizing by reversible transducer 2 as voltage source is load supplying; Sequential logic is as follows: judge that whether civil power 200 voltage U g is normal, if abnormal, then inverter 21 locking pulse, then disconnects civil power 200 input switch, cut out by civil power 200; Inverter 21 starts and works in voltage source mode, controls output voltage emergency service.
Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not departing from spirit and scope of the present utility model; can make possible variation and amendment, the scope that therefore protection range of the present utility model should define with the utility model claim is as the criterion.

Claims (6)

1. an emergency power system, is characterized in that, comprising:
Switching device shifter, is connected with civil power and ac output end;
For export as voltage source when emergency service and at civil power normal power supply time the reversible transducer that exports as current source, be connected with described switching device shifter;
Battery, is connected with described reversible transducer;
For the controller controlled described emergency power system, be connected with described switching device shifter, described reversible transducer and described battery;
Branch road checkout gear, is connected with described controller and described ac output end.
2. emergency power system according to claim 1, is characterized in that, described reversible transducer comprises:
Inverter, is connected with described controller;
Be controlled by described controller using the voltage source controlled circuit exported as voltage source, be connected with described inverter;
Be controlled by described controller using the current source controlled circuit exported as current source, be connected with described voltage source controlled circuit and described switching device shifter.
3. emergency power system according to claim 1, is characterized in that, described controller comprises:
Voltage control loop, is connected with described battery;
Current regulator, is connected with described voltage control loop;
First A-D converter, is connected with described current regulator;
Second A-D converter, is connected with described voltage control loop and described switching device shifter;
3rd A-D converter, is connected with described current regulator and described switching device shifter;
SPWM drives interface, is connected with described first A-D converter and described reversible transducer.
4. emergency power system according to claim 2, is characterized in that, described inverter comprises: the first electric capacity, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor, the 5th metal-oxide-semiconductor and the 6th metal-oxide-semiconductor; To each metal-oxide-semiconductor, the positive pole of body diode is connected to the source electrode of this metal-oxide-semiconductor, the negative pole of body diode is connected to the drain electrode of this metal-oxide-semiconductor, first metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor are connected with the drain electrode of the 5th metal-oxide-semiconductor and are connected to the positive pole of the first electric capacity, and the second metal-oxide-semiconductor, the 4th metal-oxide-semiconductor are connected with the source electrode of the 6th metal-oxide-semiconductor and are connected to the negative pole of the first electric capacity.
5. emergency power system according to claim 4, is characterized in that, described voltage source controlled circuit comprises: the first inductance, the second inductance, the 3rd inductance, the first resistance, the second resistance, the 3rd resistance, the second electric capacity, the 3rd electric capacity and the 4th electric capacity, described first inductance is connected between described first metal-oxide-semiconductor and the second metal-oxide-semiconductor, described second inductance is connected between described 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor, described 3rd inductance is connected between described 5th metal-oxide-semiconductor and the 6th metal-oxide-semiconductor, described first resistance is connected to described first inductance, described second resistance is connected to described second inductance, described 3rd resistance is connected to described 3rd inductance, described second electric capacity is connected to described first resistance, 3rd electric capacity and the 4th electric capacity, described 3rd electric capacity is connected to described second resistance and the 4th electric capacity, described 4th electric capacity is connected to described 3rd resistance.
6. emergency power system according to claim 5, is characterized in that, described current source controlled circuit comprises: the first impedance, the second impedance and the 3rd impedance; Described first impedance is connected to described second impedance and the 3rd impedance, and described second impedance is connected to the 3rd impedance.
CN201520130892.7U 2015-03-06 2015-03-06 A kind of emergency power system Active CN204465130U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104682550A (en) * 2015-03-06 2015-06-03 深圳市盛弘电气有限公司 Emergency power supply system and control method thereof
CN106230103A (en) * 2016-08-19 2016-12-14 保定市龙跃电力器材制造有限公司 A kind of intelligent emergent distribution box

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104682550A (en) * 2015-03-06 2015-06-03 深圳市盛弘电气有限公司 Emergency power supply system and control method thereof
CN106230103A (en) * 2016-08-19 2016-12-14 保定市龙跃电力器材制造有限公司 A kind of intelligent emergent distribution box

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GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: SHENZHEN SINEXCEL ELECTRIC CO., LTD.

Free format text: FORMER NAME: SHENZHEN CITY SHENGHONG ELECTRIC CO., LTD.

CP03 Change of name, title or address

Address after: Nanshan District Xili street of Shenzhen city in Guangdong province 518054 White Pine Road No. 1002, Piovan letter High-tech Industrial Park District 2 Building 6

Patentee after: SHENZHEN SINEXCEL ELECTRIC CO., LTD.

Address before: 518054 Guangdong city of Shenzhen province Nanshan District Baiwang letter Industrial Park Second District 6.

Patentee before: Shenzhen City Shenghong Electric Co., Ltd.