CN112072781A - 全水冷永磁同步柴油发电机组应急无缝切换系统及方法 - Google Patents

全水冷永磁同步柴油发电机组应急无缝切换系统及方法 Download PDF

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CN112072781A
CN112072781A CN202010835485.1A CN202010835485A CN112072781A CN 112072781 A CN112072781 A CN 112072781A CN 202010835485 A CN202010835485 A CN 202010835485A CN 112072781 A CN112072781 A CN 112072781A
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voltage
pair
main circuit
permanent magnet
emergency
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黄翔
李万钊
张培
戴峭峰
郭鹏
蔡博
沈锐
杨志勇
盛建兴
王子涵
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Wuxi Fasten Euenon Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion 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
    • H02M5/42—Conversion 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
    • H02M5/44—Conversion 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
    • H02M5/453—Conversion 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
    • H02M5/458—Conversion 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
    • H02M5/4585—Conversion 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
    • H02P9/102—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for limiting effects of transients
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
    • H02P9/107—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for limiting effects of overloads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2101/00—Special adaptation of control arrangements for generators
    • H02P2101/25—Special adaptation of control arrangements for generators for combustion engines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2103/00—Controlling arrangements characterised by the type of generator
    • H02P2103/20—Controlling arrangements characterised by the type of generator of the synchronous type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

Abstract

本发明公开了一种全水冷永磁同步柴油发电机组应急无缝切换系统及方法，包括柴油发电机组、AC‑DC双向逆变器主电路、DC‑DC双向变换器主电路，AC‑DC双向逆变器主电路上设置有用于为负载提供三相电压的三条电压线L1、L2、L3和一条零线N，DC‑DC双向变换器主电路连接储能电池组；永磁同步发电机通过AC‑DC双向逆变器主电路分别输出直流母线电压UC和三相电压，直流母线电压UC通过DC‑DC双向变换器主电路为储能电池组充电，当负载突然增加导致直流母线电压UC下降时由储能电池组通过DC‑DC双向变换器主电路进行升压以使得直流母线电压UC上升从而维持直流母线电压UC的稳定。本发明提高了柴油发电机组突加负载情况下的适应能力、异常情况下的应急能力和启动阶段的稳定供电能力。

Description

全水冷永磁同步柴油发电机组应急无缝切换系统及方法
技术领域
本发明涉及柴油发电机组技术领域，具体涉及一种全水冷永磁同步柴油发电机组应急无缝切换系统及方法。
背景技术
永磁同步柴油发电机组是以柴油为主燃料的一种发电设备，其以柴油发动机为原动力带动发电机发电，把动能转换成电能和热能的机械设备。
现有的永磁同步柴油发电机组在使用时存在以下问题：
一是节能模式下突加负载的适应能力差。柴油发电机组的控制系统在节能模式下，虽然可以根据发电机的输出功率来实时调节发动机转速，从而实现节能减排目的，但是在突加负载较大的环境中，由于发动机在较低转速下功率输出有限，发动机升速需要2～3S的时间，所以无法在瞬间提供所需功率，进而造成发动机负载较大而停车。
二是发生异常情况下的应急能力差。柴油发电机组异常情况下无法通过无缝切换为设备供电，而且还会对用电设备造成损坏和不可挽回的损失。
三是机组启动阶段无法实现供电。由于柴油发电机组启动运行需要一定的时间，因此无法在柴油发电机组启动运行阶段为设备稳定供电。
发明内容
为了解决上述问题，本发明提出一种全水冷永磁同步柴油发电机组应急无缝切换系统及方法，旨在提高柴油发电机组在突加负载情况下的适应能力、发生异常情况下的应急能力和机组启动阶段的稳定供电能力。具体的技术方案如下：
一种全水冷永磁同步柴油发电机组应急无缝切换系统，包括由发动机和永磁同步发电机所组成的全水冷永磁同步柴油发电机组、连接所述永磁同步发电机的AC-DC双向逆变器主电路、通过一对直流母线连接所述AC-DC双向逆变器主电路的DC-DC双向变换器主电路，所述AC-DC双向逆变器主电路上设置有用于为负载提供三相电压的三条电压线L1、L2、L3和一条零线N，所述DC-DC双向变换器主电路连接储能电池组；所述永磁同步发电机通过所述AC-DC双向逆变器主电路分别输出直流母线电压UC和三相电压，所述直流母线电压UC通过所述DC-DC双向变换器主电路为储能电池组充电，所述三相电压为负载供电，当负载突然增加导致直流母线电压UC下降时由储能电池组通过所述DC-DC双向变换器主电路进行升压以使得直流母线电压UC上升从而维持直流母线电压UC的稳定。
优选的，本发明的一种全水冷永磁同步柴油发电机组应急无缝切换系统还包括机组控制器、能量综合管理系统和电池管理系统，所述机组控制器连接所述能量综合管理系统，所述能量综合管理系统分别连接AC-DC双向逆变器主电路、DC-DC双向变换器主电路和所述电池管理系统，所述电池管理系统连接所述储能电池组。
优选的，所述AC-DC双向逆变器主电路包括AC-DC转换模块和DC-AC转换模块，所述AC-DC转换模块与所述DC-AC转换模块通过一对直流母线相连接；所述AC-DC转换模块包括并联设置在所述一对直流母线之间的三组IGBT，每一组IGBT由一对同方向串联的带阻尼二极管的IGBT所组成，每一对同方向串联的带阻尼二极管的IGBT之间的连接线上分别设置有相线连接点，所述永磁同步发电机的三条相线分别对应连接至所述相线连接点，在位于所述AC-DC转换模块和所述DC-AC转换模块之间的所述一对直流母线之间设置有滤波电容器C1。
优选的，所述DC-AC转换模块包括并联设置在所述一对直流母线之间的四组IGBT，每一组IGBT由一对同方向串联的IGBT所组成；且每一对同方向串联的IGBT之间的连接线上分别引出有负载供电线，所述负载供电线包括所述的三条电压线L1、L2、L3和一条零线N，且各条所述电压线与所述零线之间分别设置有电容C2、C3、C4。
优选的，所述DC-DC双向变换器主电路包括并联设置在一对直流母线之间三组IGBT，所述的，每一组IGBT由一对反方向串联的带阻尼二极管的IGBT所组成，每一对反方向串联的带阻尼二极管的IGBT之间的连接线上分别引出有三条带电感的电压线，所述三条带电感的电压线并接后连接至储能电池组的正极，所述三条带电感的电压线并接处与所述一对直流母线中的负极母线之间设置有电容。
本发明中，所述DC-DC双向变换器主电路中设置有LC滤波装置，所述LC滤波装置包括分别并联设置在一对直流母线之间的一对串联电容和一对串联电感，且所述一对串联电容之间的连线部分与所述一对串联电感之间的连线部分相互连接。
一种全水冷永磁同步柴油发电机组应急无缝切换系统的应急无缝切换方法，包括如下切换方法：
(1)当发动机在较低转速的节能模式下突然增加负载时，AC-DC双向逆变器检测到负载突然增加，AC-DC双向逆变器通过现场总线联系DC-DC双向变换器接通储能电池组，储能电池组为AC-DC双向逆变器的直流母线提供电源，从而为负载提供一定的功率补充，随后发动机转速上升，当发动机转速上升到负载大小对应转速时，AC-DC双向逆变器通过现场总线告知DC-DC双向变换器断开直流母线；
(2)在发动机电压异常情况下，AC-DC双向逆变器通过DC-DC双向变换器为直流母线供电，同时柴油发电机组的控制器发出报警并提示用户尽快保存相关数据，同时提示用户储能电池组将在一定的时间后断开，储能电池组的供电时间取决于储能电池组的电池容量大小。
优选的，通过设置应急供电开关实现柴油发电机组未启动的情况下由储能电池组先为负载供电，或者在柴油发电机组启动运行的初始阶段由储能电池组为负载稳定供电。
本发明中，所述现场总线为RS485总线或CAN总线。
进一步的，本发明通过在柴油发电机组供电的情况下为AC-DC双向逆变器的直流母线提供电源，同时考虑到为储能电池组提供最佳的充电性能，在DC-DC双向变换器中内置电池充电特性曲线，以最大限度延长电池寿命及性能。
本发明的有益效果是：
第一，本发明的一种全水冷永磁同步柴油发电机组应急无缝切换系统及方法，通过设置AC-DC双向逆变器、DC-DC双向变换器和应急用储能电池组，实现了发动机在节能模式下突加负载的带载能力。
第二，本发明的一种全水冷永磁同步柴油发电机组应急无缝切换系统及方法，在柴油发电机组异常状况下，可以无缝切换到储能电池组为设备供电并保证设备在一定时间内持续运行。
第三，本发明的一种全水冷永磁同步柴油发电机组应急无缝切换系统及方法，通过设置DC-DC双向变换器可以减少储能电池组的容量及电池数量，相比常规使用DC500～600V的储能电池组为机组直接供电的方案，其体积大幅度减少，并提高了电池充电及系统的可靠性。
附图说明
图1是本发明的一种全水冷永磁同步柴油发电机组应急无缝切换系统的总体架构图；
图2是本发明的一种全水冷永磁同步柴油发电机组应急无缝切换系统的实现原理图；
图3是图1和图2中的AC-DC双向逆变器的主电路图；
图4是图1和图2中的DC-DC双向变换器的主电路图。
图中：BUS+与BUS-为一对直流母线。
具体实施方式
下面结合附图和实施例，对本发明的具体实施方式作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。
实施例1：
如图1至4所示为本发明的一种全水冷永磁同步柴油发电机组应急无缝切换系统的实施例，包括由发动机和永磁同步发电机所组成的全水冷永磁同步柴油发电机组、连接所述永磁同步发电机的AC-DC双向逆变器主电路、通过一对直流母线连接所述AC-DC双向逆变器主电路的DC-DC双向变换器主电路，所述AC-DC双向逆变器主电路上设置有用于为负载提供三相电压的三条电压线L1、L2、L3和一条零线N，所述DC-DC双向变换器主电路连接储能电池组；所述永磁同步发电机通过所述AC-DC双向逆变器主电路分别输出直流母线电压UC和三相电压，所述直流母线电压UC通过所述DC-DC双向变换器主电路为储能电池组充电，所述三相电压为负载供电，当负载突然增加导致直流母线电压UC下降时由储能电池组通过所述DC-DC双向变换器主电路进行升压以使得直流母线电压UC上升从而维持直流母线电压UC的稳定。
优选的，本实施例的一种全水冷永磁同步柴油发电机组应急无缝切换系统还包括机组控制器、能量综合管理系统和电池管理系统，所述机组控制器连接所述能量综合管理系统，所述能量综合管理系统分别连接AC-DC双向逆变器主电路、DC-DC双向变换器主电路和所述电池管理系统，所述电池管理系统连接所述储能电池组。
优选的，所述AC-DC双向逆变器主电路包括AC-DC转换模块和DC-AC转换模块，所述AC-DC转换模块与所述DC-AC转换模块通过一对直流母线相连接；所述AC-DC转换模块包括并联设置在所述一对直流母线之间的三组IGBT，每一组IGBT由一对同方向串联的带阻尼二极管的IGBT所组成，每一对同方向串联的带阻尼二极管的IGBT之间的连接线上分别设置有相线连接点，所述永磁同步发电机的三条相线分别对应连接至所述相线连接点，在位于所述AC-DC转换模块和所述DC-AC转换模块之间的所述一对直流母线之间设置有滤波电容器C1。
优选的，所述DC-AC转换模块包括并联设置在所述一对直流母线之间的四组IGBT，每一组IGBT由一对同方向串联的IGBT所组成；且每一对同方向串联的IGBT之间的连接线上分别引出有负载供电线，所述负载供电线包括所述的三条电压线L1、L2、L3和一条零线N，且各条所述电压线与所述零线之间分别设置有电容C2、C3、C4。
优选的，所述DC-DC双向变换器主电路包括并联设置在一对直流母线之间三组IGBT，所述的，每一组IGBT由一对反方向串联的带阻尼二极管的IGBT所组成，每一对反方向串联的带阻尼二极管的IGBT之间的连接线上分别引出有三条带电感的电压线，所述三条带电感的电压线并接后连接至储能电池组的正极，所述三条带电感的电压线并接处与所述一对直流母线中的负极母线之间设置有电容。
本实施例中，所述DC-DC双向变换器主电路中设置有LC滤波装置，所述LC滤波装置包括分别并联设置在一对直流母线之间的一对串联电容和一对串联电感，且所述一对串联电容之间的连线部分与所述一对串联电感之间的连线部分相互连接。
实施例2：
一种采用实施例1的全水冷永磁同步柴油发电机组应急无缝切换系统的应急无缝切换方法，包括如下切换方法：
(1)当发动机在较低转速的节能模式下突然增加负载时，AC-DC双向逆变器检测到负载突然增加，AC-DC双向逆变器通过现场总线联系DC-DC双向变换器接通储能电池组，储能电池组为AC-DC双向逆变器的直流母线提供电源，从而为负载提供一定的功率补充，随后发动机转速上升，当发动机转速上升到负载大小对应转速时，AC-DC双向逆变器通过现场总线告知DC-DC双向变换器断开直流母线；
(2)在发动机电压异常情况下，AC-DC双向逆变器通过DC-DC双向变换器为直流母线供电，同时柴油发电机组的控制器发出报警并提示用户尽快保存相关数据，同时提示用户储能电池组将在一定的时间后断开，储能电池组的供电时间取决于储能电池组的电池容量大小。
优选的，通过设置应急供电开关实现柴油发电机组未启动的情况下由储能电池组先为负载供电，或者在柴油发电机组启动运行的初始阶段由储能电池组为负载稳定供电。
本实施例中，所述现场总线为RS485总线或CAN总线。
进一步的，本实施例通过在柴油发电机组供电的情况下为AC-DC双向逆变器的直流母线提供电源，同时考虑到为储能电池组提供最佳的充电性能，在DC-DC双向变换器中内置电池充电特性曲线，以最大限度延长电池寿命及性能。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (9)

1.一种全水冷永磁同步柴油发电机组应急无缝切换系统，其特征在于，包括由发动机和永磁同步发电机所组成的全水冷永磁同步柴油发电机组、连接所述永磁同步发电机的AC-DC双向逆变器主电路、通过一对直流母线连接所述AC-DC双向逆变器主电路的DC-DC双向变换器主电路，所述AC-DC双向逆变器主电路上设置有用于为负载提供三相电压的三条电压线L1、L2、L3和一条零线N，所述DC-DC双向变换器主电路连接储能电池组；所述永磁同步发电机通过所述AC-DC双向逆变器主电路分别输出直流母线电压UC和三相电压，所述直流母线电压UC通过所述DC-DC双向变换器主电路为储能电池组充电，所述三相电压为负载供电，当负载突然增加导致直流母线电压UC下降时由储能电池组通过所述DC-DC双向变换器主电路进行升压以使得直流母线电压UC上升从而维持直流母线电压UC的稳定。
2.根据权利要求1所述的一种全水冷永磁同步柴油发电机组应急无缝切换系统，其特征在于，还包括机组控制器、能量综合管理系统和电池管理系统，所述机组控制器连接所述能量综合管理系统，所述能量综合管理系统分别连接AC-DC双向逆变器主电路、DC-DC双向变换器主电路和所述电池管理系统，所述电池管理系统连接所述储能电池组。
3.根据权利要求1所述的一种全水冷永磁同步柴油发电机组应急无缝切换系统，其特征在于，所述AC-DC双向逆变器主电路包括AC-DC转换模块和DC-AC转换模块，所述AC-DC转换模块与所述DC-AC转换模块通过一对直流母线相连接；所述AC-DC转换模块包括并联设置在所述一对直流母线之间的三组IGBT，每一组IGBT由一对同方向串联的带阻尼二极管的IGBT所组成，每一对同方向串联的带阻尼二极管的IGBT之间的连接线上分别设置有相线连接点，所述永磁同步发电机的三条相线分别对应连接至所述相线连接点，在位于所述AC-DC转换模块和所述DC-AC转换模块之间的所述一对直流母线之间设置有滤波电容器C1。
4.根据权利要求3所述的一种全水冷永磁同步柴油发电机组应急无缝切换系统，其特征在于，所述DC-AC转换模块包括并联设置在所述一对直流母线之间的四组IGBT，每一组IGBT由一对同方向串联的IGBT所组成；且每一对同方向串联的IGBT之间的连接线上分别引出有负载供电线，所述负载供电线包括所述的三条电压线L1、L2、L3和一条零线N，且各条所述电压线与所述零线之间分别设置有电容C2、C3、C4。
5.根据权利要求1所述的一种全水冷永磁同步柴油发电机组应急无缝切换系统，其特征在于，所述DC-DC双向变换器主电路包括并联设置在一对直流母线之间三组IGBT，所述的，每一组IGBT由一对反方向串联的带阻尼二极管的IGBT所组成，每一对反方向串联的带阻尼二极管的IGBT之间的连接线上分别引出有三条带电感的电压线，所述三条带电感的电压线并接后连接至储能电池组的正极，所述三条带电感的电压线并接处与所述一对直流母线中的负极母线之间设置有电容。
6.根据权利要求1所述的一种全水冷永磁同步柴油发电机组应急无缝切换系统，其特征在于，所述DC-DC双向变换器主电路中设置有LC滤波装置，所述LC滤波装置包括分别并联设置在一对直流母线之间的一对串联电容和一对串联电感，且所述一对串联电容之间的连线部分与所述一对串联电感之间的连线部分相互连接。
7.一种如权利要求1至6中任一项所述的全水冷永磁同步柴油发电机组应急无缝切换系统的应急无缝切换方法，其特征在于，包括如下切换方法：
(1)当发动机在较低转速的节能模式下突然增加负载时，AC-DC双向逆变器检测到负载突然增加，AC-DC双向逆变器通过现场总线联系DC-DC双向变换器接通储能电池组，储能电池组为AC-DC双向逆变器的直流母线提供电源，从而为负载提供一定的功率补充，随后发动机转速上升，当发动机转速上升到负载大小对应转速时，AC-DC双向逆变器通过现场总线告知DC-DC双向变换器断开直流母线；
(2)在发动机电压异常情况下，AC-DC双向逆变器通过DC-DC双向变换器为直流母线供电，同时柴油发电机组的控制器发出报警并提示用户尽快保存相关数据，同时提示用户储能电池组将在一定的时间后断开，储能电池组的供电时间取决于储能电池组的电池容量大小。
8.根据权利要求7所述的一种全水冷永磁同步柴油发电机组应急无缝切换系统的应急无缝切换方法，其特征在于，通过设置应急供电开关实现柴油发电机组未启动的情况下由储能电池组先为负载供电，或者在柴油发电机组启动运行的初始阶段由储能电池组为负载稳定供电。
9.根据权利要求7所述的一种全水冷永磁同步柴油发电机组应急无缝切换系统的应急无缝切换方法，其特征在于，所述现场总线为RS485总线或CAN总线。
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CN113572194A (zh) * 2021-07-13 2021-10-29 中广核研究院有限公司 核电站应急柴油机系统及其控制方法
CN113852174A (zh) * 2021-08-24 2021-12-28 北京精密机电控制设备研究所 一种用于野外环境的独立移动式油田储能电源系统
CN114094661A (zh) * 2021-11-12 2022-02-25 株洲变流技术国家工程研究中心有限公司 一种非公路车辆供电系统、供电方法及非公路车辆

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CN113572194A (zh) * 2021-07-13 2021-10-29 中广核研究院有限公司 核电站应急柴油机系统及其控制方法
CN113852174A (zh) * 2021-08-24 2021-12-28 北京精密机电控制设备研究所 一种用于野外环境的独立移动式油田储能电源系统
CN113852174B (zh) * 2021-08-24 2024-03-01 北京精密机电控制设备研究所 一种用于野外环境的独立移动式油田储能电源系统
CN114094661A (zh) * 2021-11-12 2022-02-25 株洲变流技术国家工程研究中心有限公司 一种非公路车辆供电系统、供电方法及非公路车辆

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