CN109449998A - A kind of high-power shore electric power system - Google Patents

A kind of high-power shore electric power system Download PDF

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Publication number
CN109449998A
CN109449998A CN201910022846.8A CN201910022846A CN109449998A CN 109449998 A CN109449998 A CN 109449998A CN 201910022846 A CN201910022846 A CN 201910022846A CN 109449998 A CN109449998 A CN 109449998A
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CN
China
Prior art keywords
insulated gate
gate bipolar
bipolar transistor
reactor
electric power
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Pending
Application number
CN201910022846.8A
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Chinese (zh)
Inventor
戴瑜兴
李民英
罗安
胡文
陈燕东
陈宇
吕培专
梁磊乐
匡金华
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Guangdong Zhicheng Champion Group Co Ltd
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Guangdong Zhicheng Champion Group Co Ltd
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Application filed by Guangdong Zhicheng Champion Group Co Ltd filed Critical Guangdong Zhicheng Champion Group Co Ltd
Priority to CN201910022846.8A priority Critical patent/CN109449998A/en
Publication of CN109449998A publication Critical patent/CN109449998A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M5/4585Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/539Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
    • H02M7/5395Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

The invention discloses a kind of high-power shore electric power systems.The high-power shore electric power system includes sequentially connected input control module, 500kW shore electric power modules in parallel module and output isolation module;The 500kW shore electric power modules in parallel module includes the first 500kW shore electric power mould group and the 2nd 500kW shore electric power mould group in parallel.The high-power shore electric power system is shunted by mould group in parallel, in guarantee system under the premise of device safe and stable operation, can effectively promote the capacity of shore electric power, preferably meet the needs of large capacity load.And two shore electric power mould group parameters in parallel and device selection are consistent in the topological structure of the high-power shore electric power system, the unbalanced problem of parallel branch caused by as the problems such as device, internal resistance can be reduced, and then inhibit circulation, it solves the problems, such as to be also easy to produce circulation between each parallel power unit of traditional shore electric power.

Description

A kind of high-power shore electric power system
Technical field
The present invention relates to shore electric power technical fields, more particularly to a kind of high-power shore electric power system.
Background technique
High temperature, high humidity, highly corrosive, the big load impacts such as shore electric power is specific on ship, bank harbour etc. are severe Use environment and the large power supply equipment for being specifically designed manufacture are widely used on ship, shipbuilding and repair shop, ocean are bored Well platform, bank harbour etc. need to become 60Hz high quality frequency-voltage stabilized power source from 50Hz commercial power, to ship electrical equipment The occasion being powered.In general, the electric topology of low pressure shore electric power is the design structure of integration, including a set of fairing With a set of inverter.Under this topological structure, when power-supply system capacity increases, pass through the electricity of fairing and inverter Stream will increase, but since device normal operation needs to meet certain voltage, current requirements, and the capacity of shore electric power can be by To limitation, the capacity of shore electric power is caused to be difficult to reach MW class, is difficult meet the needs of high-capacity dynamical load.
Summary of the invention
The object of the present invention is to provide a kind of high-power shore electric power system, limited with the traditional shore electric power capacity of solution Problem, and provide the solution of parallel power mould group loop current suppression.
To achieve the above object, the present invention provides following schemes:
A kind of high-power shore electric power system, the high-power shore electric power system includes: sequentially connected input control Module, 500kW shore electric power modules in parallel module and output isolation module;The 500kW shore electric power modules in parallel module Including the first 500kW shore electric power mould group and the 2nd 500kW shore electric power mould group in parallel;
The input terminal of the input control module is connected with 380V/50HZ three-phase alternating-current supply;The input control mould The output end of the block input terminal with the first 500kW shore electric power mould group and the 2nd 500kW shore electric power mould group respectively It is connected;The output end of the first 500kW shore electric power mould group and the 2nd 500kW shore electric power mould group respectively with it is described The input terminal of output isolation module is connected;The output end of the output isolation module exports 450V/60Hz three-phase alternating current.
Optionally, the first 500kW shore electric power mould group includes sequentially connected first input filter unit, first AC/DC rectification unit, the first energy storage/filter unit, the first DC/AC inversion unit and the first output filter unit;Described Two 500kW shore electric power mould groups include sequentially connected second input filter unit, the 2nd AC/DC rectification unit, the second energy storage/ Filter unit, the 2nd DC/AC inversion unit and the second output filter unit;
The output end of the input control module respectively with the first input filter unit and second input filter The input terminal of unit is connected;The input of the output end of the first input filter unit and the first AC/DC rectification unit End is connected, and the output end of the first AC/DC rectification unit is connected with first energy storage/filter unit input terminal; First energy storage/filter unit output end is connected with the input terminal of the first DC/AC inversion unit;Described first The output end of DC/AC inversion unit is connected with the input terminal of the first output filter unit;The second input filter list The output end of member is connected with the input terminal of the 2nd AC/DC rectification unit, the output end of the 2nd AC/DC rectification unit It is connected with second energy storage/filter unit input terminal;Second energy storage/filter unit output end and described second The input terminal of DC/AC inversion unit is connected;The output end of the 2nd DC/AC inversion unit and the second output filtering are single The input terminal of member is connected;It is described first output filter unit and it is described second output filter unit output end respectively with it is described The input terminal of output isolation module is connected.
Optionally, the input control module includes circuit breaker Q F1, circuit breaker Q F2 and circuit breaker Q F3;The breaker The input terminal of QF1, the circuit breaker Q F2 and the circuit breaker Q F3 are separately connected the A of the 380V/50HZ three-phase alternating-current supply Phase, B phase and C phase.
Optionally, the first input filter unit includes reactor L1, reactor L2 and reactor L3;Described second is defeated Entering filter unit includes reactor L4, reactor L5 and reactor L6;The input terminal of the reactor L1 and the reactor L4 It is connected respectively with the output end of the circuit breaker Q F1;The input terminal of the reactor L2 and the reactor L5 respectively with institute The output end for stating circuit breaker Q F2 is connected;The input terminal of the reactor L3 and the reactor L6 respectively with the breaker The output end of QF3 is connected.
Optionally, the first AC/DC rectification unit includes insulated gate bipolar transistor Q1, insulated gate bipolar crystal Pipe Q2, insulated gate bipolar transistor Q3, insulated gate bipolar transistor Q4, insulated gate bipolar transistor Q5 and insulated gate are double Bipolar transistor Q6;The output end of the reactor L1 respectively with the emitter of the insulated gate bipolar transistor Q1 and described The collector of insulated gate bipolar transistor Q2 is connected;The output end of the reactor L2 respectively with the insulated gate bipolar The emitter of transistor Q3 is connected with the collector of the insulated gate bipolar transistor Q4;The output end of the reactor L3 It is connected respectively with the collector of the emitter of the insulated gate bipolar transistor Q5 and the insulated gate bipolar transistor Q6 It connects;
The 2nd AC/DC rectification unit include insulated gate bipolar transistor Q7, insulated gate bipolar transistor Q8, absolutely Edge grid bipolar junction transistor Q9, insulated gate bipolar transistor Q10, insulated gate bipolar transistor Q11 and insulated gate bipolar Transistor Q12;The output end of the reactor L4 respectively with the emitter of the insulated gate bipolar transistor Q7 and it is described absolutely The collector of edge grid bipolar junction transistor Q8 is connected;The output end of the reactor L5 is brilliant with the insulated gate bipolar respectively The emitter of body pipe Q9 is connected with the collector of the insulated gate bipolar transistor Q10;The output end of the reactor L6 Respectively with the collector phase of the emitter of the insulated gate bipolar transistor Q11 and the insulated gate bipolar transistor Q12 Connection.
Optionally, first energy storage/filter unit includes the capacitor C1 and capacitor C2 being connected in parallel;The capacitor One end of device C1 is separately connected the insulated gate bipolar transistor Q1, the insulated gate bipolar transistor Q3 and the insulation The collector of grid bipolar junction transistor Q5;The other end of the capacitor C1 is separately connected the insulated gate bipolar transistor The emitter of Q2, the insulated gate bipolar transistor Q4 and the insulated gate bipolar transistor Q6;
Second energy storage/filter unit includes the capacitor C3 and capacitor C4 being connected in parallel;The capacitor C3's One end is separately connected the insulated gate bipolar transistor Q7, the insulated gate bipolar transistor Q9 and the insulated gate bipolar The collector of transistor npn npn Q11;The other end of the capacitor C3 is separately connected the insulated gate bipolar transistor Q8, described The emitter of insulated gate bipolar transistor Q10 and the insulated gate bipolar transistor Q12.
Optionally, the first DC/AC inversion unit includes insulated gate bipolar transistor Q13, insulated gate bipolar crystalline substance Body pipe Q14, insulated gate bipolar transistor Q15, insulated gate bipolar transistor Q16, insulated gate bipolar transistor Q17 and absolutely Edge grid bipolar junction transistor Q18;One end of the capacitor C2 is separately connected the insulated gate bipolar transistor Q13, described The collector of insulated gate bipolar transistor Q15 and the insulated gate bipolar transistor Q17;The other end of the capacitor C2 It is separately connected the insulated gate bipolar transistor Q14, the insulated gate bipolar transistor Q16 and the insulated gate bipolar The emitter of transistor Q18;
The 2nd DC/AC inversion unit include insulated gate bipolar transistor Q19, insulated gate bipolar transistor Q20, Insulated gate bipolar transistor Q21, insulated gate bipolar transistor Q22, insulated gate bipolar transistor Q23 and insulated gate bipolar Transistor npn npn Q24;It is double that one end of the capacitor C4 is separately connected the insulated gate bipolar transistor Q19, the insulated gate The collector of bipolar transistor Q21 and the insulated gate bipolar transistor Q23;The other end of the capacitor C4 is separately connected The insulated gate bipolar transistor Q20, the insulated gate bipolar transistor Q22 and the insulated gate bipolar transistor The emitter of Q24.
Optionally, the first output filter unit includes reactor L7, reactor L8 and reactor L9;Described second is defeated Filter unit includes reactor L10, reactor L11 and reactor L12 out;
The input terminal of the reactor L7 respectively with the emitter of the insulated gate bipolar transistor Q13 and the insulation The collector of grid bipolar junction transistor Q14 is connected;The input terminal of the reactor L8 is brilliant with the insulated gate bipolar respectively The emitter of body pipe Q15 is connected with the collector of the insulated gate bipolar transistor Q16;The input terminal of the reactor L9 Respectively with the collector phase of the emitter of the insulated gate bipolar transistor Q17 and the insulated gate bipolar transistor Q18 Connection;
The input terminal of the reactor L10 respectively with the emitter of the insulated gate bipolar transistor Q19 and it is described absolutely The collector of edge grid bipolar junction transistor Q20 is connected;The input terminal of the reactor L11 respectively with the insulated gate bipolar The emitter of transistor Q21 is connected with the collector of the insulated gate bipolar transistor Q22;The reactor L12's is defeated Enter the end current collection with the emitter of the insulated gate bipolar transistor Q23 and the insulated gate bipolar transistor Q24 respectively Pole is connected.
Optionally, the output isolation module is made of isolating transformer B2;R, s, t of the isolating transformer B2 is inputted End uses delta connection mode;The r input terminal of the isolating transformer B2 respectively with the reactor L7 and the reactor The output end of L10 is connected;The s input terminal of the isolating transformer B2 respectively with the reactor L8 and the reactor L11 Output end be connected;The t input terminal of the isolating transformer B2 is defeated with the reactor L9 and reactor L12 respectively Outlet is connected;R, S, T output end of the isolating transformer B2 uses star-star connection mode.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
The present invention provides a kind of high-power shore electric power system, and the high-power shore electric power system includes sequentially connected Input control module, 500kW shore electric power modules in parallel module and output isolation module;The 500kW shore electric power mould group Parallel module includes the first 500kW shore electric power mould group and the 2nd 500kW shore electric power mould group in parallel.The high-power bank of the present invention The topological structure that electric power-supply system uses is shunted by two 500kW shore electric power mould groups in parallel, in guarantee system Under the premise of device safe and stable operation, the capacity of shore electric power can be effectively promoted, the need of large capacity load are preferably met It asks, so that the adaptability of high-power shore electric power further enhances.And the topological structure of the high-power shore electric power system Two shore electric power mould group parameter selections and the device selection of middle parallel connection are consistent, can reduce as far as possible due to device, internal resistance The problems such as caused by the unbalanced problem of parallel branch, and then inhibit circulation, solve each parallel power list of traditional shore electric power The problem of circulation is also easy to produce between member.
Furthermore in terms of control, the first DC/AC inversion unit and the 2nd DC/AC inversion unit are all made of PWM Control controls signal by unified send, so that output voltage is synchronous, so as to further suppress circulation.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without any creative labor, can also mention according to the present invention The attached drawing of confession obtains other attached drawings.
Fig. 1 is the topological diagram of high-power shore electric power system provided by the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of high-power shore electric power systems, to solve each parallel power of traditional shore electric power The problem that circulation and shore electric power capacity are limited is also easy to produce between unit.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real Applying mode, the present invention is described in further detail.
Fig. 1 is the topological diagram of high-power shore electric power system provided by the invention.It is provided by the invention described referring to Fig. 1 High-power shore electric power system include sequentially connected input control module 1,500kW shore electric power modules in parallel module 2 and Export isolation module 3;The 500kW shore electric power modules in parallel module 2 includes the first 500kW shore electric power mould group 21 in parallel With the 2nd 500kW shore electric power mould group 22, it is equivalent to the shore electric power parallel connection by two 500kW, forms the high-power bank of 1MW Power supply.
In the high-power shore electric power system, the input terminal and 380V/50Hz three-phase alternating current of the input control module 1 Power supply is connected;The output end of the input control module 1 respectively with the first 500kW shore electric power mould group 21 and described The input terminal of two 500kW shore electric power mould groups 22 is connected;The first 500kW shore electric power mould group 21 and described second The output end of 500kW shore electric power mould group 22 is connected with the input terminal of the output isolation module 3 respectively;The output isolation The output end of module 3 exports 450V/60Hz three-phase alternating current.
Specifically, the first 500kW shore electric power mould group 21 include sequentially connected first input filter unit 211, First AC/DC rectification unit 212, the first energy storage/filter unit 213, the first DC/AC inversion unit 214 and the first output filter Wave unit 215;The 2nd 500kW shore electric power mould group 22 includes sequentially connected second input filter unit 221, second AC/DC rectification unit 222, the second energy storage/filter unit 223, the 2nd DC/AC inversion unit 224 and the second output filtering are single Member 225.
The output end of the input control module 1 is inputted with the first input filter unit 211 and described second respectively The input terminal of filter unit 221 is connected.In the first 500kW shore electric power mould group 21, the first input filter unit 211 output end is connected with the input terminal of the first AC/DC rectification unit 212, the first AC/DC rectification unit 212 Output end be connected with the input terminal of first energy storage/filter unit 213;First energy storage/filter unit 213 it is defeated Outlet is connected with the input terminal of the first DC/AC inversion unit 214;The output end of the first DC/AC inversion unit 214 It is connected with the input terminal of the first output filter unit 215.
In the 2nd 500kW shore electric power mould group 22, the output end of the second input filter unit 221 and described the The input terminal of two AC/DC rectification units 222 is connected;The output end of the 2nd AC/DC rectification unit 222 and second storage The input terminal of energy/filter unit 223 is connected;The output end of second energy storage/filter unit 223 and the 2nd DC/AC The input terminal of inversion unit 224 is connected;The output end of the 2nd DC/AC inversion unit 224 and second output filter The input terminal of unit 225 is connected.The output of the first output filter unit 215 and the second output filter unit 225 End is connected with the input terminal of the output isolation module 3 respectively.The output end of the output isolation module 3 exports 450V/ 60Hz three-phase alternating current.
Specifically, the input control module 1 is for controlling the first input filter unit 211 and second input The input of filter unit 221.Specifically, the input control module 1 includes circuit breaker Q F1, circuit breaker Q F2 and circuit breaker Q F3; The input terminal of the circuit breaker Q F1, the circuit breaker Q F2 and the circuit breaker Q F3 are separately connected 380V/50Hz three-phase alternating current A phase, B phase and the C phase in source.
The first input filter unit 211 and the second input filter unit 221 are respectively made of one group of reactor, are used It is filtered in input voltage.The size of reactor need to cooperate circuit to be designed, but should ensure that first input filter Unit 211 is consistent with the reactor parameter of corresponding position in the second input filter unit 221, such as reactor L1 and reactance The parameter of device L4 is consistent, and reactor 2 is consistent with the parameter of reactor L5, and reactor L3 is consistent with the parameter of reactor L6.Specifically , the first input filter unit 211 includes reactor L1, reactor L2 and reactor L3;The second input filter list Member 221 includes reactor L4, reactor L5 and reactor L6.The input of the input terminal of the reactor L1 and the reactor L4 End is connected with the output end of the circuit breaker Q F1 respectively;The input of the input terminal of the reactor L2 and the reactor L5 End is connected with the output end of the circuit breaker Q F2 respectively;The input of the input terminal of the reactor L3 and the reactor L6 End is connected with the output end of the circuit breaker Q F3 respectively.
The first AC/DC rectification unit 212 and the 2nd AC/DC rectification unit 222 are respectively by 6 IGBT The rectification circuit that (InsulatedGateBipolarTransistor, insulated gate bipolar transistor) is constituted is used for three-phase AC rectification is direct current.Specifically, the first AC/DC rectification unit 212 include insulated gate bipolar transistor Q1, absolutely Edge grid bipolar junction transistor Q2, insulated gate bipolar transistor Q3, insulated gate bipolar transistor Q4, insulated gate bipolar crystal Pipe Q5 and insulated gate bipolar transistor Q6.The output end of the reactor L1 respectively with the insulated gate bipolar transistor Q1 Emitter be connected with the collector of the insulated gate bipolar transistor Q2;The output end of the reactor L2 respectively with institute The emitter for stating insulated gate bipolar transistor Q3 is connected with the collector of the insulated gate bipolar transistor Q4;The electricity The output end of anti-device L3 respectively with the emitter and the insulated gate bipolar transistor of the insulated gate bipolar transistor Q5 The collector of Q6 is connected.
The 2nd AC/DC rectification unit 222 includes insulated gate bipolar transistor Q7, insulated gate bipolar transistor Q8, insulated gate bipolar transistor Q9, insulated gate bipolar transistor Q10, insulated gate bipolar transistor Q11 and insulated gate are double Bipolar transistor Q12;The output end of the reactor L4 respectively with the emitter of the insulated gate bipolar transistor Q7 and institute The collector for stating insulated gate bipolar transistor Q8 is connected;The output end of the reactor L5 respectively with the insulated gate bipolar The emitter of transistor npn npn Q9 is connected with the collector of the insulated gate bipolar transistor Q10;The reactor L6's is defeated The outlet current collection with the emitter of the insulated gate bipolar transistor Q11 and the insulated gate bipolar transistor Q12 respectively Pole is connected.
The grid of the insulated gate bipolar transistor Q1~Q6 and the insulated gate bipolar transistor Q7~Q12 are equal It is controlled using PWM, the first AC/DC rectification unit 212 and corresponding position in the 2nd AC/DC rectification unit 222 IGBT control parameter is consistent, such as the control of the insulated gate bipolar transistor Q1 and the insulated gate bipolar transistor Q7 Parameter is consistent, and the insulated gate bipolar transistor Q2 is consistent with the control parameter of the insulated gate bipolar transistor Q8, with This analogizes.
First energy storage/filter unit 213 is two by being connected across 212 output end of the first AC/DC rectification unit A capacitor composition, for realizing energy storage and filter function.The capacitance size of the capacitor needs that circuit is cooperated to be designed, But it should ensure that the capacitor of corresponding position in first energy storage/filter unit 213 and second energy storage/filter unit 223 Parameter is consistent.Specifically, first energy storage/filter unit 213 includes the capacitor C1 and capacitor C2 being connected in parallel;It is described One end of capacitor C1 is separately connected the insulated gate bipolar transistor Q1, the insulated gate bipolar transistor Q3 and described The collector of insulated gate bipolar transistor Q5;The other end of the capacitor C1 is separately connected the insulated gate bipolar crystal The emitter of pipe Q2, the insulated gate bipolar transistor Q4 and the insulated gate bipolar transistor Q6.
Second energy storage/filter unit 223 includes the capacitor C3 and capacitor C4 being connected in parallel;The capacitor C3 To be separately connected the insulated gate bipolar transistor Q7, the insulated gate bipolar transistor Q9 and the insulated gate double for one end The collector of bipolar transistor Q11;The other end of the capacitor C3 is separately connected the insulated gate bipolar transistor Q8, institute State the emitter of insulated gate bipolar transistor Q10 and the insulated gate bipolar transistor Q12.
The first DC/AC inversion unit 214 is respectively to be made of 6 IGBT with the 2nd DC/AC inversion unit 224 Inverter circuit, for by DC inverter be three-phase alternating current.Specifically, the first DC/AC inversion unit 214 includes exhausted Edge grid bipolar junction transistor Q13, insulated gate bipolar transistor Q14, insulated gate bipolar transistor Q15, insulated gate bipolar Transistor Q16, insulated gate bipolar transistor Q17 and insulated gate bipolar transistor Q18;Distinguish one end of the capacitor C2 Connect the insulated gate bipolar transistor Q13, the insulated gate bipolar transistor Q15 and the insulated gate bipolar crystal The collector of pipe Q17;The other end of the capacitor C2 is separately connected the insulated gate bipolar transistor Q14, the insulation The emitter of grid bipolar junction transistor Q16 and the insulated gate bipolar transistor Q18.
The 2nd DC/AC inversion unit 224 includes insulated gate bipolar transistor Q19, insulated gate bipolar transistor Q20, insulated gate bipolar transistor Q21, insulated gate bipolar transistor Q22, insulated gate bipolar transistor Q23 and insulated gate Bipolar junction transistor Q24;One end of the capacitor C4 is separately connected the insulated gate bipolar transistor Q19, the insulation The collector of grid bipolar junction transistor Q21 and the insulated gate bipolar transistor Q23;The other end of the capacitor C4 is distinguished Connect the insulated gate bipolar transistor Q20, the insulated gate bipolar transistor Q22 and the insulated gate bipolar crystal The emitter of pipe Q24.
The grid of the insulated gate bipolar transistor Q13~Q18 and the insulated gate bipolar transistor Q19~Q24 Pole is all made of PWM control, sends pwm control signal by unified, so that output voltage is synchronous, and then inhibits circulation.Described One DC/AC inversion unit 214 is consistent with the IGBT control parameter of corresponding position in the 2nd DC/AC inversion unit 224, such as The insulated gate bipolar transistor Q13 is consistent with the control parameter of the insulated gate bipolar transistor Q19, the insulated gate Bipolar junction transistor Q15 is consistent with the control parameter of the insulated gate bipolar transistor Q21, and so on.
Ship electric system uses the three-phase alternating current of 440V/60HZ, the 380V/50Hz three-phase alternating current provided with power grid It mismatches, cannot directly use, through the invention AC/DC rectification unit, energy storage/filter unit and DC/AC inversion unit Transformation, may be implemented the variation of electric energy voltage and frequency, by the 380V/50Hz three-phase alternating current of input, is changed into 450V/60Hz Three-phase alternating current electricity output, to meet the needs of shipborne equipment.
The first output filter unit 215 and the second output filter unit 225 are made of one group of reactor respectively, Three-phase alternating current for exporting to DC/AC inversion unit is filtered.Specifically, the first output filter unit 215 wraps Include reactor L7, reactor L8 and reactor L9;The second output filter unit 225 includes reactor L10, reactor L11 With reactor L12.The size setting of reactor is related to circuit whole design in the output filtering parallel module 4, but should protect It is consistent with the reactor parameter of corresponding position in the second output filter unit 225 to demonstrate,prove the first output filter unit 215, Such as reactor L7 is consistent with the parameter of reactor L10, reactor 8 is consistent with the parameter of reactor L11, reactor L9 and reactance The parameter of device L12 is consistent.
The input terminal of the reactor L7 respectively with the emitter of the insulated gate bipolar transistor Q13 and the insulation The collector of grid bipolar junction transistor Q14 is connected;The input terminal of the reactor L8 is brilliant with the insulated gate bipolar respectively The emitter of body pipe Q15 is connected with the collector of the insulated gate bipolar transistor Q16;The input terminal of the reactor L9 Respectively with the collector phase of the emitter of the insulated gate bipolar transistor Q17 and the insulated gate bipolar transistor Q18 Connection.
The input terminal of the reactor L10 respectively with the emitter of the insulated gate bipolar transistor Q19 and it is described absolutely The collector of edge grid bipolar junction transistor Q20 is connected;The input terminal of the reactor L11 respectively with the insulated gate bipolar The emitter of transistor Q21 is connected with the collector of the insulated gate bipolar transistor Q22;The reactor L12's is defeated Enter the end current collection with the emitter of the insulated gate bipolar transistor Q23 and the insulated gate bipolar transistor Q24 respectively Pole is connected.
In the present invention, the device parameters selection of corresponding part is consistent in unit in parallel or mould group, it is possible to reduce and receipts or other documents in duplicate Member due to parameter unbalance caused by circulation.Currently, the capacity that single inverter module can export is limited, and the present invention is logical The capacity of shore electric power system can be promoted by crossing mode in parallel, reach the high-power of 1MW.In addition, the list of each parallel connection Member or mould group can also independently realize transformation of electrical energy function, transplant and extend convenient for module.
After the output end of the first output filter unit 215 is in parallel with the output end of the second output filtering 225, with The input terminal of the output isolation module 3 is connected.The output isolation module 3 is made of isolating transformer B2, in bank Electrical isolation is formed between electric power-supply system and load.Tri- input terminals of r, s, t of the isolating transformer B2 use △ shape (three It is angular) mode of connection;R, S, T output end of the isolating transformer B2 uses Y shape (star) mode of connection.The isolation transformation The r input terminal of device B2 is connected with the output end of the output end of the reactor L7 and the reactor L10 respectively;The isolation The s input terminal of transformer B2 is connected with the output end of the output end of the reactor L8 and the reactor L11 respectively;It is described The t input terminal of isolating transformer B2 is connected with the output end of the output end of the reactor L9 and the reactor L12 respectively. There are four output end R, S, T, N for the isolating transformer B2 tool, for exporting the three-phase alternating current of 440V/60HZ.
High-power shore electric power system provided by the invention, solve the difference due to parallel power unit component characteristic, Different, the different units of load connection line length export power caused by internal impedance has differences and output current unevenness point, cause The problem of circulation is generated between each parallel power unit.In terms of circuit topology, the topology of the high-power shore electric power system The parameter selection of two shore electric power mould groups in parallel in structure, device selection are consistent, can reduce as far as possible due to device, interior The unbalanced problem of parallel branch caused by the problems such as resistance, and then inhibit circulation.In terms of control, DC/AC inversion unit is equal It is controlled using PWM, signal is controlled by unified send, so that output voltage is synchronous, to further suppress circulation.
High-power shore electric power system provided by the invention, also further solves traditional shore electric power electric topology structure The problem of lower capacity boost hardly possible.The present invention is shunted using mould group in parallel, in the premise for guaranteeing device safe and stable operation Under, the capacity of shore electric power can be effectively promoted, to preferably meet the needs of large capacity load, so that high-power bank electricity is electric The adaptability of source system further enhances.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said It is bright to be merely used to help understand the device of the invention and its core concept;At the same time, for those skilled in the art, foundation Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not It is interpreted as limitation of the present invention.

Claims (9)

1. a kind of high-power shore electric power system, which is characterized in that the high-power shore electric power system includes: sequentially connected Input control module, 500kW shore electric power modules in parallel module and output isolation module;The 500kW shore electric power mould group Parallel module includes the first 500kW shore electric power mould group and the 2nd 500kW shore electric power mould group in parallel;
The input terminal of the input control module is connected with 380V/50HZ three-phase alternating-current supply;The input control module Output end is connected with the input terminal of the first 500kW shore electric power mould group and the 2nd 500kW shore electric power mould group respectively It connects;The output end of the first 500kW shore electric power mould group and the 2nd 500kW shore electric power mould group respectively with the output The input terminal of isolation module is connected;The output end of the output isolation module exports 450V/60Hz three-phase alternating current.
2. high-power shore electric power system according to claim 1, which is characterized in that the first 500kW shore electric power Mould group includes sequentially connected first input filter unit, the first AC/DC rectification unit, the first energy storage/filter unit, first DC/AC inversion unit and the first output filter unit;The 2nd 500kW shore electric power mould group includes sequentially connected second Input filter unit, the 2nd AC/DC rectification unit, the second energy storage/filter unit, the 2nd DC/AC inversion unit and second are defeated Filter unit out;
The output end of the input control module respectively with the first input filter unit and the second input filter unit Input terminal be connected;The input terminal phase of the output end of the first input filter unit and the first AC/DC rectification unit Connection, the output end of the first AC/DC rectification unit are connected with first energy storage/filter unit input terminal;It is described First energy storage/filter unit output end is connected with the input terminal of the first DC/AC inversion unit;First DC/AC The output end of inversion unit is connected with the input terminal of the first output filter unit;The second input filter unit it is defeated Outlet is connected with the input terminal of the 2nd AC/DC rectification unit, the output end of the 2nd AC/DC rectification unit with it is described Second energy storage/filter unit input terminal is connected;Second energy storage/filter unit output end and the 2nd DC/AC The input terminal of inversion unit is connected;The output end of the 2nd DC/AC inversion unit and described second exports filter unit Input terminal is connected;It is described first output filter unit and it is described second output filter unit output end respectively with the output The input terminal of isolation module is connected.
3. high-power shore electric power system according to claim 2, which is characterized in that the input control module includes disconnected Road device QF1, circuit breaker Q F2 and circuit breaker Q F3;The input of the circuit breaker Q F1, the circuit breaker Q F2 and the circuit breaker Q F3 End is separately connected the A phase, B phase and C phase of the 380V/50Hz three-phase alternating-current supply.
4. high-power shore electric power system according to claim 3, which is characterized in that the first input filter unit packet Include reactor L1, reactor L2 and reactor L3;The second input filter unit includes reactor L4, reactor L5 and reactance Device L6;The input terminal of the reactor L1 and the reactor L4 are connected with the output end of the circuit breaker Q F1 respectively;It is described The input terminal of reactor L2 and the reactor L5 are connected with the output end of the circuit breaker Q F2 respectively;The reactor L3 It is connected respectively with the output end of the circuit breaker Q F3 with the input terminal of the reactor L6.
5. high-power shore electric power system according to claim 4, which is characterized in that the first AC/DC rectification unit Including insulated gate bipolar transistor Q1, insulated gate bipolar transistor Q2, insulated gate bipolar transistor Q3, insulated gate bipolar Transistor npn npn Q4, insulated gate bipolar transistor Q5 and insulated gate bipolar transistor Q6;The output end of the reactor L1 point It is not connected with the collector of the emitter of the insulated gate bipolar transistor Q1 and the insulated gate bipolar transistor Q2; The output end of the reactor L2 respectively with the emitter and the insulated gate bipolar of the insulated gate bipolar transistor Q3 The collector of transistor Q4 is connected;The output end of the reactor L3 hair with the insulated gate bipolar transistor Q5 respectively Emitter-base bandgap grading is connected with the collector of the insulated gate bipolar transistor Q6;
The 2nd AC/DC rectification unit includes insulated gate bipolar transistor Q7, insulated gate bipolar transistor Q8, insulated gate Bipolar junction transistor Q9, insulated gate bipolar transistor Q10, insulated gate bipolar transistor Q11 and insulated gate bipolar crystal Pipe Q12;The output end of the reactor L4 respectively with the emitter and the insulated gate of the insulated gate bipolar transistor Q7 The collector of bipolar junction transistor Q8 is connected;The output end of the reactor L5 respectively with the insulated gate bipolar transistor The emitter of Q9 is connected with the collector of the insulated gate bipolar transistor Q10;The output end of the reactor L6 is distinguished It is connected with the collector of the emitter of the insulated gate bipolar transistor Q11 and the insulated gate bipolar transistor Q12.
6. high-power shore electric power system according to claim 5, which is characterized in that first energy storage/filter unit Including the capacitor C1 and capacitor C2 being connected in parallel;It is brilliant that one end of the capacitor C1 is separately connected the insulated gate bipolar The collector of body pipe Q1, the insulated gate bipolar transistor Q3 and the insulated gate bipolar transistor Q5;The capacitor The other end of C1 is separately connected the insulated gate bipolar transistor Q2, the insulated gate bipolar transistor Q4 and the insulation The emitter of grid bipolar junction transistor Q6;
Second energy storage/filter unit includes the capacitor C3 and capacitor C4 being connected in parallel;One end of the capacitor C3 It is separately connected the insulated gate bipolar transistor Q7, the insulated gate bipolar transistor Q9 and the insulated gate bipolar is brilliant The collector of body pipe Q11;The other end of the capacitor C3 is separately connected the insulated gate bipolar transistor Q8, the insulation The emitter of grid bipolar junction transistor Q10 and the insulated gate bipolar transistor Q12.
7. high-power shore electric power system according to claim 6, which is characterized in that the first DC/AC inversion unit Including insulated gate bipolar transistor Q13, insulated gate bipolar transistor Q14, insulated gate bipolar transistor Q15, insulated gate Bipolar junction transistor Q16, insulated gate bipolar transistor Q17 and insulated gate bipolar transistor Q18;The one of the capacitor C2 End is separately connected the insulated gate bipolar transistor Q13, the insulated gate bipolar transistor Q15 and the insulated gate bipolar The collector of transistor npn npn Q17;The other end of the capacitor C2 is separately connected the insulated gate bipolar transistor Q14, institute State the emitter of insulated gate bipolar transistor Q16 and the insulated gate bipolar transistor Q18;
The 2nd DC/AC inversion unit includes insulated gate bipolar transistor Q19, insulated gate bipolar transistor Q20, insulation Grid bipolar junction transistor Q21, insulated gate bipolar transistor Q22, insulated gate bipolar transistor Q23 and insulated gate bipolar are brilliant Body pipe Q24;One end of the capacitor C4 is separately connected the insulated gate bipolar transistor Q19, the insulated gate bipolar The collector of transistor Q21 and the insulated gate bipolar transistor Q23;The other end of the capacitor C4 is separately connected described Insulated gate bipolar transistor Q20, the insulated gate bipolar transistor Q22 and the insulated gate bipolar transistor Q24's Emitter.
8. high-power shore electric power system according to claim 7, which is characterized in that the first output filter unit packet Include reactor L7, reactor L8 and reactor L9;The second output filter unit includes reactor L10, reactor L11 and electricity Anti- device L12;
The input terminal of the reactor L7 is double with the emitter of the insulated gate bipolar transistor Q13 and the insulated gate respectively The collector of bipolar transistor Q14 is connected;The input terminal of the reactor L8 respectively with the insulated gate bipolar transistor The emitter of Q15 is connected with the collector of the insulated gate bipolar transistor Q16;The input terminal of the reactor L9 is distinguished It is connected with the collector of the emitter of the insulated gate bipolar transistor Q17 and the insulated gate bipolar transistor Q18;
The input terminal of the reactor L10 respectively with the emitter and the insulated gate of the insulated gate bipolar transistor Q19 The collector of bipolar junction transistor Q20 is connected;The input terminal of the reactor L11 respectively with the insulated gate bipolar crystal The emitter of pipe Q21 is connected with the collector of the insulated gate bipolar transistor Q22;The input terminal of the reactor L12 Respectively with the collector phase of the emitter of the insulated gate bipolar transistor Q23 and the insulated gate bipolar transistor Q24 Connection.
9. high-power shore electric power system according to claim 8, which is characterized in that the output isolation module is by being isolated Transformer B2 composition;R, s, t input terminal of the isolating transformer B2 uses delta connection mode;The isolating transformer B2 R input terminal be connected respectively with the output end of the reactor L7 and the reactor L10;The s of the isolating transformer B2 Input terminal is connected with the output end of the reactor L8 and the reactor L11 respectively;The t of the isolating transformer B2 is inputted End is connected with the output end of the reactor L9 and the reactor L12 respectively;R, S, T of the isolating transformer B2 is exported End uses star-star connection mode.
CN201910022846.8A 2019-01-10 2019-01-10 A kind of high-power shore electric power system Pending CN109449998A (en)

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CN110868095A (en) * 2019-11-15 2020-03-06 中国舰船研究设计中心 DC-AC inverter for ship regional power distribution
CN112260109A (en) * 2020-10-28 2021-01-22 西安中车永电电气有限公司 High-protection double-electric shore power box

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Publication number Priority date Publication date Assignee Title
CN110868095A (en) * 2019-11-15 2020-03-06 中国舰船研究设计中心 DC-AC inverter for ship regional power distribution
CN110868095B (en) * 2019-11-15 2021-08-10 中国舰船研究设计中心 DC-AC inverter for ship regional power distribution
CN112260109A (en) * 2020-10-28 2021-01-22 西安中车永电电气有限公司 High-protection double-electric shore power box

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Application publication date: 20190308