CN114157153A - 一种250kva大功率高频高压静电电源 - Google Patents

一种250kva大功率高频高压静电电源 Download PDF

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CN114157153A
CN114157153A CN202111459195.2A CN202111459195A CN114157153A CN 114157153 A CN114157153 A CN 114157153A CN 202111459195 A CN202111459195 A CN 202111459195A CN 114157153 A CN114157153 A CN 114157153A
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frequency
voltage
power supply
power
series
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杨阳
张缝松
郭英豪
李伟东
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XIANGYANG JIUDING HAOTIAN ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
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    • 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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/3353—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc 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 thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc 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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/162—Conversion of ac power input into dc 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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc 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 thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc 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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/17—Conversion of ac power input into dc 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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only arranged for operation in parallel
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
    • H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
    • H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with 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
    • H02M7/81—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with 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 arranged for operation in parallel
    • 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
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
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Abstract

本发明提供一种250KVA大功率高频高压静电电源，其其包括串联谐振回路、逆变变压器部分和整流硅堆部分，串联谐振回路采用三相输入，串联谐振回路采用串联谐振方式，实现零电流关断，最高输出脉冲频率设计为40KHZ；逆变变压器部分采用双组相同功率变压器并联工作方式，其中每组变压器由两个高压包串联组成。两组独立驱动方波，其中基础驱动频率可达20KHZ，二次输出基础高频脉冲0‑40KHZ。

Description

一种250KVA大功率高频高压静电电源
技术领域
本发明属于环保技术领域，涉及一种250KVA大功率高频高压静电电源，其广泛应用于火电、钢铁、水泥、有色冶炼、煤焦化、化工、电子、植绒及其它静电沉积场所。
背景技术
相对于常规可控硅电源而言，高频电源具有三相平衡输入、输出纹波小、平均电压电流高、变压器体积小、转换效率与功率因数高等多项显著优点，尤其是其应用于环保电除尘设备中，可以大幅度地提升除尘效率。现有电除尘使用高频电源替代传统可控硅工频电源，极大拓展了电除尘器的应用范围，对环保设备配套电源产品的产业结构调整和优化升级产生了重要的影响。
高频电源通常采用工频三相交流电输入，经整流、LC滤波变为直流电压，再经过逆变器逆变成为高频交流电压源，通过恒流组件进行V/I转换把高频交流电压源转化为近似正弦的高频交流电流源，再经升压变压器将高频交流电流源转化为高频高压交流电流源，最后整流输出变为高频恒流高压直流电流源。
因高频电源受到高频特性限制，市场上高频电源多以1A\2A为主，输出功率小于150KVA。随着电除尘技术的推广，其可能适用的场合越来越广，但是受到高频电源低功率的限制，电除尘技术的推广受到极大的制约。
发明内容
基于现实和生产实践的需要，本申请人投入大量资金及长期研究，提供了一种250KVA大功率高频高压静电电源,其提升了高压静电电源的功率，进而拓展了适用高频电源的应用场所和适用设备，其对应用高压电源的静电除尘行业带来革命性的变革。
依据本发明的技术方案，提供一种250KVA大功率高频高压静电电源，其特征在于，其包括串联谐振回路、逆变变压器部分和整流硅堆部分，串联谐振回路采用三相输入，串联谐振回路采用串联谐振方式，实现零电流关断，最高输出脉冲频率设计为40KHZ；逆变变压器部分采用双组相同功率变压器并联工作方式，其中每组变压器由两个高压包串联组成。
其中，整流硅堆部分采用4个高压包整流后串联，每个高压包4个硅堆进行整流。
进一步地，每组变压器的两个高压包整流后串联，两组变压器单独整流后并联输出两组独立驱动方波，后接共计16个整流硅堆。
优选地，所述250KVA大功率高频高压静电电源包括整流电路DZ，整流电路DZ用于将三相输入的工频交流电整流成工频脉动直流电；整流电路DZ后接第一电子开关全桥电路和第二电子开关全桥电路。
进一步地，第一电子开关全桥电路用于将母线电压的直流电进行逆变，得到脉动的直流电；第一电子开关全桥电路包括由整流模块DB1、整流模块DB2构成的互补对称结构全桥电路，整流模块DB1由两对结构相同绝缘栅双极型晶体管串联构成，整流模块DB2由两对结构相对绝缘栅双极型晶体管串联构成。
优选地，第一电子开关全桥电路的共集电极端连接母线电压的正极，共发射极端连接母线电压负极，交流输出端与串联的C1、L1、T1原边绕组并联；T1副边与整流硅堆输入端并联。
此外，第二电子开关全桥电路用于将母线电压的直流电进行逆变，得到与第一电子开关全桥电路相位相差180°的脉动的直流电。
相比于现有技术，本设计250KVA大功率高频高压静电电源采用双组相同变压器分别整流后并联输出，有效解决现有高频脉冲电源功率不足问题。具有高频脉冲电源优点，三相平衡，纹波系数小，闪络电压高，恒流特性。提高除尘效率，及电源应用范围。
附图说明
图1是依据本发明的250KVA大功率高频高压静电电源原理示意图。
图2是依据本发明的250KVA大功率高频高压静电电源整流硅堆示意图。
图3是高频高压静电电源二次电流波形示意图。
图4是高频高压静电电源应用的电除尘设备的示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的250KVA大功率高频高压静电电源，其包括串联谐振回路、逆变变压器部分和整流硅堆部分，串联谐振回路采用三相输入，经串联谐振回路采用串联谐振方式，实现零电流关断，最高输出脉冲频率设计为40KHZ；逆变变压器部分采用双组相同功率变压器并联工作方式，其中每组变压器由两个高压包串联组成。整流硅堆部分采用4个高压包整流后串联，每个高压包4个硅堆进行整流；每组变压器的两个高压包整流后串联，两组变压器单独整流后并联输出两组独立驱动方波，后接共计16个整流硅堆。250KVA大功率高频高压静电电源采用两组独立驱动方波，单组驱动频率可达20KHZ(基础驱动频率)，二次输出基础高频脉冲0-40KHZ。功率模块IGBT可采用双组600A并联或者单组1400A规格IGBT。
下面参考附图1，说明本发明的250KVA大功率高频高压静电电源，250KVA大功率高频高压静电电源包括串联谐振回路部分、逆变变压器部分和整流硅堆部分。如图1所示，250KVA大功率高频高压静电电源进一步包括整流电路DZ，整流电路DZ用于将三相输入(A相、B相和C相)的工频交流电整流成工频脉动直流电；整流电路DZ后接第一电子开关全桥电路和第二电子开关全桥电路。
第一电子开关全桥电路，用于将母线电压的直流电进行逆变，得到脉动的直流电；第一电子开关全桥电路包括由整流模块DB1、整流模块DB2构成的互补对称结构全桥电路，整流模块DB1由两对结构相同绝缘栅双极型晶体管串联构成，整流模块DB2由两对结构相对绝缘栅双极型晶体管串联构成。第一电子开关全桥电路的共集电极端连接母线电压的正极，共发射极端连接母线电压负极，交流输出端与串联的C1、L1、T1原边绕组并联；T1副边与整流硅堆输入端并联。
第二电子开关全桥电路，用于将母线电压的直流电进行逆变，得到与第一电子开关全桥电路相位相差180°的脉动的直流电；第二电子开关全桥电路包括由整流模块DB3、整流模块DB4构成的互补对称结构全桥电路，整流模块DB3由两对结构相同绝缘栅双极型晶体管串联构成，整流模块DB4由两对结构相对绝缘栅双极型晶体管串联构成。第二电子开关全桥电路的共集电极端连接母线电压的正极，共发射极端连接母线电压负极，交流输出端与串联的C2、L2、T2原边绕组并联；T2副边与整流硅堆输入端并联。
如图2所示的250KVA大功率高频高压静电电源整流硅堆，整流硅堆部分包括4个高压包，每个高压包采用4个硅堆进行整流；其中2个高压包与T1副边相并联，另2个高压包与T2副边相并联；每组变压器的两个高压包整流后串联，两组变压器单独整流后并联输出，4个高压包采用16个整流硅堆D1-D16。
其中整流硅堆D1、D2、D3、D4和电感T1A组成第一个高压包，整流硅堆D1的正极和整流硅堆D2的正极相连接，整流硅堆D1的负极和整流硅堆D2的负极连接在电感T1A的两端，整流硅堆D1的负极和整流硅堆D3的正极连接，整流硅堆D2的负极和整流硅堆D4的正极连接，整流硅堆D3的负极和整流硅堆D4的负极连接。
整流硅堆D5、D6、D7、D8和电感T2B组成第二个高压包，整流硅堆D5的正极和整流硅堆D6的正极相连接，整流硅堆D5的负极和整流硅堆D6的负极连接在电感T1B的两端，整流硅堆D5的负极和整流硅堆D7的正极连接，整流硅堆D6的负极和整流硅堆D8的正极连接，整流硅堆D7的负极和整流硅堆D8的负极连接。
整流硅堆D9、D10、D11、D12和电感T2A组成第三个高压包，整流硅堆D9的正极和整流硅堆D10的正极相连接，整流硅堆D91的负极和整流硅堆D10的负极连接在电感T2A的两端，整流硅堆D9的负极和整流硅堆D11的正极连接，整流硅堆D10的负极和整流硅堆D12的正极连接，整流硅堆D11的负极和整流硅堆D12的负极连接。
整流硅堆D13、D14、D15、D16和电感T2B组成第四个高压包，整流硅堆D13的正极和整流硅堆D14的正极相连接，整流硅堆D13的负极和整流硅堆D14的负极连接在电感T2B的两端，整流硅堆D13的负极和整流硅堆D15的正极连接，整流硅堆D14的负极和整流硅堆D16的正极连接，整流硅堆D15的负极和整流硅堆D16的负极连接。
第一个高压包与第二个高压包相串联，构成前级高压包体；第三个高压包与第四个高压包相串联，构成后级高压包体；前级高压包体和后级高压包体并联。前级高压包体和后级高压包体并联之后，其一端连接-HV，给静电除尘设备提供高压；其另一端接地。
更进一步地，一种250KVA大功率高频高压静电电源在采用三相输入和整流之后，经电容C变为DC537V。DB1、DB2为电子开关全桥电路式双桥路IGBT，其与C1谐振电容、L1谐振电感、以及逆变变压器T1的漏感LS1和负荷电容CS形成串联谐振，通过设置谐振中心点，实现零电流关断，最高输出脉冲频率设计为40KHZ。
如图3所示高频高压静电电源二次电流波形，其为本发明的高频高压静电电源的二次电流波形。二次电流波形表明，该二次电流产生非常尖锐的脉冲放电。
图4为将本发明的高频高压静电电源应用到静电电除尘设备中的场景。本发明的高频高压静电电源优选采用双脉冲电源高压-HV，静电电除尘器本体包括接地桩、阴极丝和阳极管，阴极丝悬垂在阳极管中心线上，阳极管为蜂窝状，双脉冲电源高压-HV与阴极丝连接，双脉冲电源接地端与阳极管和本体接地桩连接并可靠接地；进口烟气经由进气口进入静电电除尘器本体，流经蜂窝内部，经过电除尘之后，自静电电除尘器出口排出出口烟气。
本发明的一种250KVA大功率高频高压静电电源所产生的高压，通过增加电场注入功率，从而有效提升静电除尘器的除尘效率。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明实施例揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。

Claims (9)

1.一种250KVA大功率高频高压静电电源，其特征在于，其包括串联谐振回路、逆变变压器部分和整流硅堆部分，串联谐振回路采用三相输入，串联谐振回路采用串联谐振方式，实现零电流关断，最高输出脉冲频率设计为40KHZ；逆变变压器部分采用双组相同功率变压器并联工作方式，其中每组变压器由两个高压包串联组成。
2.根据权利要求1所述的250KVA大功率高频高压静电电源，其特征在于，整流硅堆部分采用4个高压包整流后串联，每个高压包4个硅堆进行整流。
3.根据权利要求2所述的250KVA大功率高频高压静电电源，其特征在于，每组变压器的两个高压包整流后串联，两组变压器单独整流后并联输出两组独立驱动方波。
4.根据权利要求2所述的250KVA大功率高频高压静电电源，其特征在于，包括整流电路DZ，整流电路DZ用于将三相输入的工频交流电整流成工频脉动直流电。
5.根据权利要求4所述的250KVA大功率高频高压静电电源，其特征在于，整流电路DZ后接第一电子开关全桥电路和第二电子开关全桥电路。
6.根据权利要求5所述的250KVA大功率高频高压静电电源，其特征在于，第一电子开关全桥电路，用于将母线电压的直流电进行逆变，得到脉动的直流电。
7.根据权利要求5所述的250KVA大功率高频高压静电电源，其特征在于，第一电子开关全桥电路包括由整流模块DB1、整流模块DB2构成的互补对称结构全桥电路，整流模块DB1由两对结构相同绝缘栅双极型晶体管串联构成，整流模块DB2由两对结构相对绝缘栅双极型晶体管串联构成。
8.根据权利要求5所述的250KVA大功率高频高压静电电源，其特征在于，第一电子开关全桥电路的共集电极端连接母线电压的正极，共发射极端连接母线电压负极，交流输出端与串联的C1、L1、T1原边绕组并联；T1副边与整流硅堆输入端并联。
9.根据权利要求6所述的250KVA大功率高频高压静电电源，其特征在于，第二电子开关全桥电路，用于将母线电压的直流电进行逆变，得到与第一电子开关全桥电路相位相差180°的脉动的直流电。
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