CN206432911U - A kind of DC power-supply system - Google Patents

A kind of DC power-supply system Download PDF

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Publication number
CN206432911U
CN206432911U CN201621483615.5U CN201621483615U CN206432911U CN 206432911 U CN206432911 U CN 206432911U CN 201621483615 U CN201621483615 U CN 201621483615U CN 206432911 U CN206432911 U CN 206432911U
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China
Prior art keywords
igbt
power
electric capacity
emitter stage
colelctor electrode
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Chinese (zh)
Inventor
梁洪
陈伟
邓永艳
顾硕
罗乃好
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Guilin Juntaifu Electric Co., Ltd.
Hainan Jinpan intelligent Polytron Technologies Inc
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GUILIN JUNTAIFU ELECTRIC Co Ltd
HAINAN JINPAN ELECTRIC CO Ltd
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Abstract

The utility model discloses a kind of DC power-supply system, including transformer, the first alternating-current switch, pre-charge resistance, the second alternating-current switch, three-phase inversion bridge circuit, dc switch, control device, AC voltage sensor, direct current voltage sensor and DC current sensor, each half bridge arm of three-phase inversion bridge circuit includes AC current sensor, single-phase reactor and the power model of series connection.When near-end or far end short occurs in back end DC power network, the diode in IGBT can be controlled to end, it is to avoid the damage of power device and miscellaneous equipment, system reliability and safe.

Description

A kind of DC power-supply system
Technical field
The utility model is related to power supply of urban orbit traffic technical field, more particularly to a kind of DC power-supply system.
Background technology
The DC power-supply system of current urban track traffic is generally adopted by based on the general of high power device IGBT compositions In logical Three-Phase PWM Rectifier electric power system, the system, when near-end or far end short occurs in DC traction power network, in IGBT Diode is in the conduction state, because the short circuit current flow tolerance of IGBT device is smaller, thus easily cause power device with And the damage of miscellaneous equipment, it is impossible to meet urban track traffic tractive power supply system high reliability, the requirement of high safety grade.
Therefore, how to provide a kind of high DC power-supply system of reliability is that those skilled in the art need solution at present Problem.
Utility model content
The purpose of this utility model is to provide a kind of DC power-supply system, when back end DC power network near-end occurs or distally short Lu Shi, can control the diode in IGBT to end, it is to avoid the damage of power device and miscellaneous equipment, system reliability and peace Quan Xinggao.
In order to solve the above technical problems, the utility model provides a kind of DC power-supply system, including:
One end connection AC network, the other end connect the three-phase input end of the first alternating-current switch and pre-charge resistance respectively Transformer;
Its three-phase output end connects first alternating-current switch at the midpoint of each phase bridge arm of three-phase inversion bridge circuit respectively;
Its three-phase output end is connected respectively the pre-charge resistance of the three-phase input end of the second alternating-current switch;
Second exchange connected corresponding with the three-phase output end of first alternating-current switch respectively of its three-phase output end Switch;
Each half bridge arm of the three-phase inversion bridge circuit include be serially connected an AC current sensor, one Single-phase reactor and a power model, wherein, the AC current sensor in each upper bridge arm is connected with single-phase reactor It is connected afterwards with the second end of power model, with power after each the AC current sensor in lower bridge arm is connected with single-phase reactor The first end of module is connected;
With dc switch electrode input end after the first end interconnection of three power models in three upper bridge arms Connection;
Second end of three power models in three upper bridge arms is defeated with the dc switch negative pole after being connected with each other Enter end connection;
Output end connects the dc switch of direct current network;
The power model includes several IGBT and electric capacity, for controlling the IGBT to be turned off in control device When, the electric current of itself input charges with controlling the diode in the IGBT to be turned off to the electric capacity;
Three AC voltage sensors in every phase of the input side of first alternating-current switch are connected in parallel on respectively;
Three AC current sensors in every phase of the outlet side of first alternating-current switch are connected on respectively;
It is connected in parallel on the direct current voltage sensor of the dc switch output end;
It is connected on the DC current sensor of the dc switch output end;
Control device for controlling IGBT working condition in each described power model;The input of the control device End connect respectively each described AC voltage sensor, the direct current voltage sensor, each described AC current sensor with And the DC current sensor;The output end of the control device is connected with the control end of IGBT each described respectively flows voltage Sensor.
Preferably, the power model includes four IGBT and electric capacity;
First IGBT emitter stage be connected with the 2nd IGBT colelctor electrode after as the power model first end;
3rd IGBT emitter stage be connected with the 4th IGBT colelctor electrode after as the power model the second end;
The first end of the colelctor electrode of first IGBT, the colelctor electrode of the 3rd IGBT and the electric capacity is connected;
Second end of the emitter stage of the 2nd IGBT, the emitter stage of the 3rd IGBT and the electric capacity is connected.
Preferably, the power model includes three IGBT, an electric capacity and a diode;
First IGBT emitter stage be connected with the 2nd IGBT colelctor electrode after as the power model first end;
The colelctor electrode of first IGBT is connected with the first end of the electric capacity and the negative electrode of the diode respectively;
The emitter stage connection of the emitter stage of 2nd IGBT, the second end of the electric capacity and the 3rd IGBT;
The anode of the diode be connected with the colelctor electrode of the 3rd IGBT after as the power model the second end.
Preferably, the power model includes three IGBT, two electric capacity and a diode;
First IGBT emitter stage be connected with the 2nd IGBT colelctor electrode after as the power model first end;
The colelctor electrode of first IGBT is connected with the first end of the first electric capacity;
The negative electrode at the second end of first electric capacity, the first end of the second electric capacity and the diode is connected;
Second end of second electric capacity connects the emitter stage of the 2nd IGBT and the 3rd IGBT emitter stage respectively;
The colelctor electrode of 3rd IGBT be connected with the anode of the diode after as the power model the second end.
Preferably, the power model includes six IGBT and two electric capacity;
First IGBT emitter stage be connected with the 2nd IGBT colelctor electrode after as the power model first end;
The colelctor electrode of first IGBT connects the first end of the first electric capacity and the 3rd IGBT colelctor electrode respectively;
The emitter stage of 2nd IGBT connects the second end of first electric capacity and the 4th IGBT emitter stage respectively;
The emitter stage of 3rd IGBT connects the second end of the second electric capacity and the 6th IGBT emitter stage respectively;
The colelctor electrode of 4th IGBT connects the first end of second electric capacity and the 5th IGBT colelctor electrode respectively;
The emitter stage of 5th IGBT be connected with the colelctor electrode of the 6th IGBT after as the of the power model Two ends.
Preferably, the power model includes six IGBT, four electric capacity and two diodes;
First IGBT emitter stage be connected with the 2nd IGBT colelctor electrode after as the power model first end;
The colelctor electrode of first IGBT connects the first end of the first electric capacity and the 3rd IGBT colelctor electrode respectively;
The emitter stage of 2nd IGBT connects the second end of the second electric capacity;
The anode connection at the second end of first electric capacity, the first end of second electric capacity and the first diode;
Emitter stage, the negative electrode of first diode, the anode of the second diode and the 4th of 3rd IGBT IGBT colelctor electrode connection;
The negative electrode of second diode connects the second end of the 3rd electric capacity and the first end of the 4th electric capacity respectively;
The emitter stage of 4th IGBT connects the second end of the 4th electric capacity and the 6th IGBT emitter stage respectively;
The first end of 3rd electric capacity connects the 5th IGBT colelctor electrode;
The emitter stage of 5th IGBT be connected with the colelctor electrode of the 6th IGBT after as the of the power model Two ends.
Preferably, the single-phase reactor is specially reactor with T-shaped core or air-core reactor.
Preferably, the transformer is specially dry-type transformer.
The utility model provide a kind of DC power-supply system, including transformer, the first alternating-current switch, pre-charge resistance, Second alternating-current switch, three-phase inversion bridge circuit, dc switch, control device, AC voltage sensor, direct current voltage sensor with And DC current sensor, each half bridge arm of three-phase inversion bridge circuit include series connection AC current sensor, single-phase reactance Device and power model.When near-end or far end short occurs in back end DC power network, control device is according to direct current voltage sensor And the DC bus-bar voltage and DC bus current value of DC current sensor collection, determine that back end DC power network occurs short Road, and control the IGBT in each power model to turn off, now the electric current of each power model input can be in power model Electric capacity charges, and when the DC voltage at electric capacity two ends reaches predetermined voltage threshold, the diode in IGBT can be controlled to end, so that Block the short-circuit current in IGBT, it is to avoid the damage of power device and miscellaneous equipment, improve system reliability and peace Quan Xing.
Brief description of the drawings
, below will be to prior art and embodiment in order to illustrate more clearly of the technical scheme in the utility model embodiment In required for the accompanying drawing that uses be briefly described, it should be apparent that, drawings in the following description are only of the present utility model Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this A little accompanying drawings obtain other accompanying drawings.
A kind of structural representation for DC power-supply system that Fig. 1 provides for the utility model;
A kind of structural representation for power model that Fig. 2 provides for the utility model;
The structural representation for another power model that Fig. 3 provides for the utility model;
The structural representation for another power model that Fig. 4 provides for the utility model;
The structural representation for another power model that Fig. 5 provides for the utility model;
The structural representation for another power model that Fig. 6 provides for the utility model;
A kind of control structure schematic diagram for control device that Fig. 7 provides for the utility model.
Embodiment
Core of the present utility model is to provide a kind of DC power-supply system, when back end DC power network near-end occurs or distally short Lu Shi, can control the diode in IGBT to end, it is to avoid the damage of power device and miscellaneous equipment, system reliability and peace Quan Xinggao.
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to The scope of the utility model protection.
The utility model provide a kind of DC power-supply system, it is shown in Figure 1, Fig. 1 provided for the utility model one Plant the structural representation of DC power-supply system;The system includes:
One end connection AC network, the other end connect the first alternating-current switch KM1 and pre-charge resistance R1 three-phase respectively The transformer T of input;
Wherein, transformer T here is specially dry-type transformer.Certainly, the utility model does not limit transformer T tool Body type.
Its three-phase output end connects the first alternating-current switch KM1 at the midpoint of each phase bridge arm of three-phase inversion bridge circuit respectively;
Its three-phase output end is connected respectively the pre-charge resistance R1 of the second alternating-current switch KM2 three-phase input end;
Second alternating-current switch of its three-phase output end connection corresponding with the first alternating-current switch KM1 three-phase output end respectively KM2;
Each half bridge arm of three-phase inversion bridge circuit include be serially connected an AC current sensor (TA1~ TA6), a single-phase reactor (L1~L6) and a power model (M1~M6), wherein, the alternating current in each upper bridge arm The second end with power model (M1, M3, M5) after flow sensor (TA1, TA3, TA5) is connected with single-phase reactor (L1, L3, L5) T2 is connected, after the AC current sensor (TA2, TA4, TA6) in each lower bridge arm is connected with single-phase reactor (L2, L4, L6) It is connected with the first end T1 of power model (M2, M4, M6);
With dc switch QS1 after the first end T1 interconnections of three power models (M1, M3, M5) in three upper bridge arms Electrode input end is connected;
With dc switch QS1 after the second end T2 interconnections of three power models (M2, M4, M6) in three upper bridge arms Negative input is connected;
Output end connects the dc switch QS1 of direct current network;
Power model include several IGBT and electric capacity, for control device MC control IGBT be turned off when, itself The electric current of input controls electric capacity charging the diode in IGBT to be turned off;
Be connected in parallel on respectively in every phase of the first alternating-current switch KM1 input side three AC voltage sensors (V1, V2, V3);
Be connected on respectively in every phase of the first alternating-current switch KM1 outlet side three AC current sensors (TA8, TA9、TA10);
It is connected in parallel on the direct current voltage sensor V4 of dc switch QS1 output ends;
It is connected on the DC current sensor TA7 of dc switch QS1 output ends;
Control device MC for controlling IGBT working condition in each power model;Control device MC input point Do not connect each AC voltage sensor (V1, V2, V3), direct current voltage sensor V4, each AC current sensor (TA1~ TA6, TA8~TA10) and DC current sensor TA7;The control end of control device MC output end respectively with each IGBT Be connected stream voltage sensor.
Wherein, control device MC connects each IGBT control end by optical fiber.Certainly, other connecting lines can be also used, The utility model is not construed as limiting to this.
It is understood that being used in three-phase inversion bridge circuit per the AC current sensor (TA1~TA6) on phase bridge arm Detect bridge arm current;Being connected on three AC current sensors (TA8~TA10) of the first alternating-current switch KM1 outlet side is used for Detect three-phase alternating current bus current;Be connected in parallel on the first alternating-current switch KM1 input side three AC voltage sensors (V1, V2, V3) it is used to detect three-phase alternating current busbar voltage;Direct current voltage sensor V4 is used to detect DC bus-bar voltage;DC current is sensed Device TA7 is used to detect DC bus current.
Here the first alternating-current switch KM1 and the second alternating-current switch KM2 is three-phase ac contactor, certainly, this practicality It is new to this and to be not specifically limited.
It is understood that when just being begun to turn between power model and AC network, can be to the electricity in power model Appearance charged, power model can be produced from during this to the upper electric current of AC network, on this electric current can influence be The normal work of system, therefore need to set pre-charge resistance R1 to consume electric current on this.Therefore, system of the present utility model The course of work in should first close the second alternating-current switch KM2, when power model complete charge after, close the first alternating-current switch KM1, disconnects the second alternating-current switch KM2, then closes dc switch QS1, direct current network is charged.
Wherein, the function of single-phase reactor is the specially dry type iron core in order to realize current limliting and filter out the purpose of harmonic wave Reactor or air-core reactor.Certainly, the utility model does not limit the type of single-phase reactor specifically.
The utility model provide a kind of DC power-supply system, including transformer, the first alternating-current switch, pre-charge resistance, Second alternating-current switch, three-phase inversion bridge circuit, dc switch, control device, AC voltage sensor, direct current voltage sensor with And DC current sensor, each half bridge arm of three-phase inversion bridge circuit include series connection AC current sensor, single-phase reactance Device and power model.When near-end or far end short occurs in back end DC power network, control device is according to direct current voltage sensor And the DC bus-bar voltage and DC bus current value of DC current sensor collection, determine that back end DC power network occurs short Road, and control the IGBT in each power model to turn off, now the electric current of each power model input can be in power model Electric capacity charges, and when the DC voltage at electric capacity two ends reaches predetermined voltage threshold, the diode in IGBT can be controlled to end, so that Block the short-circuit current in IGBT, it is to avoid the damage of power device and miscellaneous equipment, improve system reliability and peace Quan Xing.
In an advantageous embodiment, power model includes four IGBT and electric capacity C;It is shown in Figure 2, Fig. 2 A kind of structural representation of the power model provided for the utility model;
First IGBT S1 emitter stage be connected with the 2nd IGBT S2 colelctor electrode after as power model first end T1;
3rd IGBT S3 emitter stage be connected with the 4th IGBT S4 colelctor electrode after as power model the second end T2;
The first end of first IGBT S1 colelctor electrode, the 3rd IGBT S3 colelctor electrode and electric capacity C is connected;
Second end of the 2nd IGBT S2 emitter stage, the 3rd IGBT S3 emitter stage and electric capacity C is connected.
In an advantageous embodiment, it is shown in Figure 3, another power model that Fig. 3 provides for the utility model Structural representation;Power model includes three IGBT, an electric capacity C and a diode D;
First IGBT S1 emitter stage be connected with the 2nd IGBT S2 colelctor electrode after as power model first end T1;
First IGBT S1 colelctor electrode is connected with electric capacity C first end and diode D negative electrode respectively;
The emitter stage connection of 2nd IGBT S2 emitter stage, electric capacity C the second end and the 3rd IGBT S3;
Diode D anode be connected with the 3rd IGBT S3 colelctor electrode after as power model the second end T2.
In an advantageous embodiment, power model includes three IGBT, two electric capacity and a diode D;Referring to Shown in Fig. 4, the structural representation for another power model that Fig. 4 provides for the utility model;
First IGBT S1 emitter stage be connected with the 2nd IGBT S2 colelctor electrode after as power model first end T1;
First IGBT S1 colelctor electrode is connected with the first electric capacity C1 first end;
The negative electrode at the first electric capacity C1 the second end, the second electric capacity C2 first end and diode D is connected;
Second electric capacity C2 the second end connects the 2nd IGBT S2 emitter stage and the 3rd IGBT S3 emitter stage respectively;
3rd IGBT S3 colelctor electrode be connected with diode D anode after as power model the second end T2.
In an advantageous embodiment, power model includes six IGBT and two electric capacity;Shown in Figure 5, Fig. 5 is this The structural representation for another power model that utility model is provided;
First IGBT S1 emitter stage be connected with the 2nd IGBT S2 colelctor electrode after as power model first end T1;
First IGBT S1 colelctor electrode connects the first electric capacity C1 first end and the 3rd IGBT S3 colelctor electrode respectively;
2nd IGBT S2 emitter stage connects the first electric capacity C1 the second end and the 4th IGBT S4 emitter stage respectively;
3rd IGBT S3 emitter stage connects the second electric capacity C2 the second end and the 6th IGBT S6 emitter stage respectively;
4th IGBT S4 colelctor electrode connects the second electric capacity C2 first end and the 5th IGBT S5 colelctor electrode respectively;
5th IGBT S5 emitter stage be connected with the 6th IGBT S6 colelctor electrode after as power model the second end T2.
In an advantageous embodiment, power model includes six IGBT, four electric capacity and two diodes;Referring to figure Shown in 6, the structural representation for another power model that Fig. 6 provides for the utility model;
First IGBT S1 emitter stage be connected with the 2nd IGBT S2 colelctor electrode after as power model first end T1;
First IGBT S1 colelctor electrode connects the first electric capacity C1 first end and the 3rd IGBT S3 colelctor electrode respectively;
2nd IGBT S2 emitter stage connects the second electric capacity C2 the second end;
The anode connection at the first electric capacity C1 the second end, the second electric capacity C2 first end and the first diode D1;
3rd IGBT S3 emitter stage, the first diode D1 negative electrode, the second diode D2 anode and the 4th IGBT S4 colelctor electrode connection;
Second diode D2 negative electrode connects the 3rd electric capacity C3 the second end and the 4th electric capacity C4 first end respectively;
4th IGBT S4 emitter stage connects the 4th electric capacity C4 the second end and the 6th IGBT S6 emitter stage respectively;
3rd electric capacity C3 first end connects the 5th IGBT S5 colelctor electrode;
5th IGBT S5 emitter stage be connected with the 6th IGBT S6 colelctor electrode after as power model the second end T2.
In addition, above in each embodiment, the electric capacity in power model can be direct current thin-film capacitor, and diode can be Fast recovery diode, certainly, the utility model do not limit the particular type of electric capacity and diode.
It is understood that above in each embodiment, two-way flow can be achieved in the current direction in power model, therefore Energy can be made to flow to direct current network from AC network, in train when train starting is run using any of the above-described kind of structure During braking, the braking energy of generation flows to AC network from direct current network, is used for other loads, and that improves energy utilizes effect Rate.
Certainly, several preferred embodiments be these are only, the concrete structure of the utility model not power limitation module, as long as energy It is enough to realize when direct current net side is short-circuit, diode cut-off in control IGBT, and the purpose of electric current two-way flow can be realized Power module architectures within protection domain of the present utility model.
In an advantageous embodiment, it is shown in Figure 7, a kind of control for control device that Fig. 7 provides for the utility model Structural representation processed.Control device includes ring controller IDPIC, reactive current in stream outer voltage controller CDC, watt current Interior ring controller IQPIC and SPWM modulators, the control process of control device are as follows:
Before launch train, the urban transportation acquiescence is operated in controlled rectification powering mode, traction power supply process In, control device constantly detects the three-phase alternating current busbar voltage (UA, UB, UC) of DC power-supply system each sensor collection, three Cross streams bus current (IA, IB, IC), DC bus-bar voltage UDC, DC bus current (IDC), 6 tunnel bridge arm currents (IBRIDGE1~IBRIDGE6) data;
The reference value IDREF of ring controller IDPIC in watt current, order are obtained by DC voltage outer ring controller CDC Ring controller IQPIC reference values IQREF is 0 in reactive current, sends pulse-width signal by SPWM modulators and controls each Power model, and then three-phase alternating current, DC bus-bar voltage and DC current are adjusted, DC voltage stability is preset in rectification Value S_VALUE.
During train service braking, control device constantly detects DC bus-bar voltage UDC, when DC bus-bar voltage rises To feedback preset value G_VALUE, control device adjusts control model to inversion feedback pattern, DC voltage outer shroud according to preset value Controller CDC sends inversion feedback current command value IDREF to ring controller IDPIC in watt current, passes through SPWM modulators Driving power module, AC network is fed back to by the DC energy that regenerative braking is produced, until DC bus-bar voltage UDC drops to Rectification preset value S_VALUE.
Certainly, preferred embodiment is these are only, the utility model does not limit the specific control program included in control device Content.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other Between the difference of embodiment, each embodiment identical similar portion mutually referring to.For device disclosed in embodiment For, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is said referring to method part It is bright.
It should also be noted that, in this manual, such as first and second or the like relational terms be used merely to by One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged Except also there is other identical element in the process including the key element, method, article or equipment.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The most wide scope consistent with features of novelty.

Claims (8)

1. a kind of DC power-supply system, it is characterised in that including:
One end connection AC network, the other end connect the change of the three-phase input end of the first alternating-current switch and pre-charge resistance respectively Depressor;
Its three-phase output end connects first alternating-current switch at the midpoint of each phase bridge arm of three-phase inversion bridge circuit respectively;
Its three-phase output end is connected respectively the pre-charge resistance of the three-phase input end of the second alternating-current switch;
Second alternating-current switch of its three-phase output end connection corresponding with the three-phase output end of first alternating-current switch respectively;
Each half bridge arm of the three-phase inversion bridge circuit include be serially connected an AC current sensor, one it is single-phase Reactor and a power model, wherein, after the AC current sensor in each upper bridge arm is connected with single-phase reactor and Second end of power model is connected, with power model after each the AC current sensor in lower bridge arm is connected with single-phase reactor First end be connected;
The first end of three power models in three upper bridge arms is connected after being connected with each other with dc switch electrode input end;
With the dc switch negative input after the second end interconnection of three power models in three upper bridge arms Connection;
Output end connects the dc switch of direct current network;
The power model includes several IGBT and electric capacity, for when control device controls the IGBT to be turned off, from The electric current of body input charges with controlling the diode in the IGBT to be turned off to the electric capacity;
Three AC voltage sensors in every phase of the input side of first alternating-current switch are connected in parallel on respectively;
Three AC current sensors in every phase of the outlet side of first alternating-current switch are connected on respectively;
It is connected in parallel on the direct current voltage sensor of the dc switch output end;
It is connected on the DC current sensor of the dc switch output end;
Control device for controlling IGBT working condition in each described power model;The input of the control device point Each described AC voltage sensor, the direct current voltage sensor, each described AC current sensor and institute are not connected State DC current sensor;The output end of the control device is connected with the control end of IGBT each described respectively flows voltage sensor Device.
2. system according to claim 1, it is characterised in that the power model includes four IGBT and electricity Hold;
First IGBT emitter stage be connected with the 2nd IGBT colelctor electrode after as the power model first end;
3rd IGBT emitter stage be connected with the 4th IGBT colelctor electrode after as the power model the second end;
The first end of the colelctor electrode of first IGBT, the colelctor electrode of the 3rd IGBT and the electric capacity is connected;
Second end of the emitter stage of the 2nd IGBT, the emitter stage of the 3rd IGBT and the electric capacity is connected.
3. system according to claim 1, it is characterised in that the power model include three IGBT, an electric capacity with And a diode;
First IGBT emitter stage be connected with the 2nd IGBT colelctor electrode after as the power model first end;
The colelctor electrode of first IGBT is connected with the first end of the electric capacity and the negative electrode of the diode respectively;
The emitter stage connection of the emitter stage of 2nd IGBT, the second end of the electric capacity and the 3rd IGBT;
The anode of the diode be connected with the colelctor electrode of the 3rd IGBT after as the power model the second end.
4. system according to claim 1, it is characterised in that the power model include three IGBT, two electric capacity with And a diode;
First IGBT emitter stage be connected with the 2nd IGBT colelctor electrode after as the power model first end;
The colelctor electrode of first IGBT is connected with the first end of the first electric capacity;
The negative electrode at the second end of first electric capacity, the first end of the second electric capacity and the diode is connected;
Second end of second electric capacity connects the emitter stage of the 2nd IGBT and the 3rd IGBT emitter stage respectively;
The colelctor electrode of 3rd IGBT be connected with the anode of the diode after as the power model the second end.
5. system according to claim 1, it is characterised in that the power model includes six IGBT and two electric capacity;
First IGBT emitter stage be connected with the 2nd IGBT colelctor electrode after as the power model first end;
The colelctor electrode of first IGBT connects the first end of the first electric capacity and the 3rd IGBT colelctor electrode respectively;
The emitter stage of 2nd IGBT connects the second end of first electric capacity and the 4th IGBT emitter stage respectively;
The emitter stage of 3rd IGBT connects the second end of the second electric capacity and the 6th IGBT emitter stage respectively;
The colelctor electrode of 4th IGBT connects the first end of second electric capacity and the 5th IGBT colelctor electrode respectively;
The emitter stage of 5th IGBT be connected with the colelctor electrode of the 6th IGBT after as the power model the second end.
6. system according to claim 1, it is characterised in that the power model include six IGBT, four electric capacity with And two diodes;
First IGBT emitter stage be connected with the 2nd IGBT colelctor electrode after as the power model first end;
The colelctor electrode of first IGBT connects the first end of the first electric capacity and the 3rd IGBT colelctor electrode respectively;
The emitter stage of 2nd IGBT connects the second end of the second electric capacity;
The anode connection at the second end of first electric capacity, the first end of second electric capacity and the first diode;
The emitter stage of 3rd IGBT, the negative electrode of first diode, the anode of the second diode and the 4th IGBT Colelctor electrode is connected;
The negative electrode of second diode connects the second end of the 3rd electric capacity and the first end of the 4th electric capacity respectively;
The emitter stage of 4th IGBT connects the second end of the 4th electric capacity and the 6th IGBT emitter stage respectively;
The first end of 3rd electric capacity connects the 5th IGBT colelctor electrode;
The emitter stage of 5th IGBT be connected with the colelctor electrode of the 6th IGBT after as the power model the second end.
7. system according to claim 1, it is characterised in that the single-phase reactor be specially reactor with T-shaped core or Air-core reactor.
8. system according to claim 1, it is characterised in that the transformer is specially dry-type transformer.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106505887A (en) * 2016-12-30 2017-03-15 海南金盘电气有限公司 A kind of DC power-supply system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106505887A (en) * 2016-12-30 2017-03-15 海南金盘电气有限公司 A kind of DC power-supply system

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Co-patentee after: Guilin Juntaifu Electric Co., Ltd.

Patentee after: Hainan Jinpan intelligent Polytron Technologies Inc

Address before: 570216 7 Haikou Free Trade Zone, 168 Nanhai Road, Haikou, Hainan.

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Patentee before: Hainan Jinpan Electric Co., Ltd.