CN110943626A - 基于级联Buck技术的超声波电源 - Google Patents

基于级联Buck技术的超声波电源 Download PDF

Info

Publication number
CN110943626A
CN110943626A CN201911031802.8A CN201911031802A CN110943626A CN 110943626 A CN110943626 A CN 110943626A CN 201911031802 A CN201911031802 A CN 201911031802A CN 110943626 A CN110943626 A CN 110943626A
Authority
CN
China
Prior art keywords
voltage
power supply
sine
direct current
ultrasonic power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911031802.8A
Other languages
English (en)
Inventor
张长征
张维尧
周持衡
舒泳皓
朱雨洁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei University of Technology
Original Assignee
Hubei University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hubei University of Technology filed Critical Hubei University of Technology
Priority to CN201911031802.8A priority Critical patent/CN110943626A/zh
Publication of CN110943626A publication Critical patent/CN110943626A/zh
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion 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
    • H02M7/53—Conversion 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
    • H02M7/537—Conversion 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
    • H02M7/5387—Conversion 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 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

公开了一种基于级联Buck技术的超声波电源，包括：将交流电压转换为恒定直流电压的整流单元；将所述恒定直流电压变换成幅值和频率可调的正弦半波直流电压的直流变换器；将所述正弦半波直流电压逆变为正弦交流电压的全桥逆变器；以及将所述正弦交流电压接入超声波换能器的高频变压器和匹配网络；其中所述直流变换器单元为单相级联双buck结构。利用本公开的电源给换能器供电，无需在换能器两端并联滤波电容，可以大大减小匹配网络电抗器的电感量，有效提高超声波电源的功率密度，大大降低谐振电压，有效提高系统的稳定性和可靠性。

Description

基于级联Buck技术的超声波电源
技术领域
本公开属于超声波电源技术领域，具体涉及基于级联Buck变换器的超声波电源。
背景技术
超声波能够通过“空化”作用高效地清洁物件的表面。所谓“空化”，即指存在于液体中的微小气泡(空化核)在超声场的作用下振动、生长并不断聚集声场能量，当能量达到某个阈值时，空化气泡急剧崩溃闭合的过程。空化气泡的寿命约0.1μs，它在急剧崩溃时可释放出巨大的能量，并产生速度约为110m/s、有强大冲击力的微射流。也就是利用超声波电源推动超声波换能器在液体中产生超声振动，使液体产生空穴，空穴破碎时产生高强度爆破式液力冲击波，在这种液力冲击波的连续冲击下，粘附在工件表面的污垢被剥落，从而达到清洗目的。传统的超声波电源实现方法是将市电整流为直流电，再通过逆变电路逆变为方波。这种方波逆变技术的超声波电源具有元器件少、成本低等优点，但谐波含量高，需要在换能器两端并联滤波电容，增加匹配网络电抗器电感量，从而实现无源滤波，谐振电压较高，可靠性较差，功率密度较低。
发明内容
本公开提供基于级联Buck技术的超声波电源，利用本公开的电源给换能器供电，无需在换能器两端并联滤波电容，可以大大减小匹配网络电抗器的电感量，有效提高超声波电源的功率密度，大大降低谐振电压，有效提高系统的稳定性和可靠性。
根据本公开实施例的一方面，提供一种超声波电源，包括：将交流电压转换为恒定直流电压的整流单元；将所述恒定直流电压变换成幅值和频率可调的正弦半波直流电压的直流变换器；将所述正弦半波直流电压逆变为正弦交流电压的全桥逆变器；以及将所述正弦交流电压接入超声波换能器的高频变压器和匹配网络；其中所述直流变换器为单相级联双buck结构。
在上述的超声波电源，所述整流单元为单相二极管整流桥。
附图说明
下面结合附图和具体实施方式对本公开作进一步详细说明。
图1示出了基于级联Buck技术的超声波电源的系统框图。
图2示出了二极管整流单元的拓扑结构。
图3a示出了直流变换器的拓扑结构。
图3b示出了输入到图3a所示的直流变换器的波形。
图3c示出了图3a所示的直流变换器的输出波形。
图4a示出了全桥逆变器的拓扑结构。
图4b示出了4a所示的全桥逆变器的输出波形。
图5示出了高频变压器的拓扑结构。
图6示出了匹配网络的拓扑结构。
图7示出了换能器等效电路图。
具体实施方式
如图1，一种超声波电源包括依次连接的二极管整流单元、直流变换器、全桥逆变器、高频变压器和匹配网络。如图2，所述二极管整流单元的拓扑为单相桥式结构，用于将输入侧交流电压转换为恒定直流电压。如图3a-3c，所述直流变换器的拓扑为单相级联双buck结构，用于将所述恒定直流电压变换成幅值和频率可调的正弦半波直流电压。其中两个buck级联，开关管隔180度导通，使得buck电路开关管频率减半，消除纹波，会提高效率。所述全桥逆变器的拓扑可参见图4a，所述全桥逆变器将所述正弦半波直流电压逆变为图4b所示的正弦交流电压。所述高频变压器的拓扑可参见图5，其实现降压及电气隔离功能，前端接入所述正弦交流电压。如图6，所述匹配网络的拓扑采用采用串联电抗器，用于补偿换能器的静态电容。
所述超声波电源的主要参数可为：额定输入电压220V，频率50Hz；级联Buck变换器开关频率100kHz，最大输出功率为1kW；换能器静态电容23.61nF，动态电容76.28pF，动态电感830mH，动态电阻18Ω。
二极管整流单元输出311V直流电压；直流变换器采用双Buck电路级联，开关频率100kHz，两个载波互差180°，等效开关频率200kHz，输出幅值和频率可调的正弦半波直流电压；全桥逆变器将输入的正弦半波直流电压逆变为正弦交流电压；全桥逆变器输出峰值功率时，正弦波电流幅值为7.45A，高频变压器变比为0.5，匹配网络电抗器电感值为7.628uH。
本公开的所述超声波电源具有下述两个方面的优点：(1)无需在换能器两端并联滤波电容，可以大大减小匹配网络电抗器的电感量，有效提高超声波电源的功率密度。(2)匹配网络电抗与换能器静态电容间的谐振电压大大降低，有效提高超声波电源系统的稳定性和可靠性。

Claims (2)

1.一种超声波电源，其特征在于，包括：将交流电压转换为恒定直流电压的整流单元；将所述恒定直流电压变换成幅值和频率可调的正弦半波直流电压的直流变换器；将所述正弦半波直流电压逆变为正弦交流电压的全桥逆变器；以及将所述正弦交流电压接入超声波换能器的高频变压器和匹配网络；其中所述直流变换器为单相级联双buck结构。
2.根据权利要求1所述的超声波电源，其特征在于，所述整流单元为单相二极管整流桥。
CN201911031802.8A 2019-10-28 2019-10-28 基于级联Buck技术的超声波电源 Pending CN110943626A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911031802.8A CN110943626A (zh) 2019-10-28 2019-10-28 基于级联Buck技术的超声波电源

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911031802.8A CN110943626A (zh) 2019-10-28 2019-10-28 基于级联Buck技术的超声波电源

Publications (1)

Publication Number Publication Date
CN110943626A true CN110943626A (zh) 2020-03-31

Family

ID=69906519

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911031802.8A Pending CN110943626A (zh) 2019-10-28 2019-10-28 基于级联Buck技术的超声波电源

Country Status (1)

Country Link
CN (1) CN110943626A (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202818657U (zh) * 2012-10-11 2013-03-20 山东乐航节能科技股份有限公司 一种便携式感应加热装置
CN103368416A (zh) * 2013-07-31 2013-10-23 三峡大学 潜航器长距离直流馈电系统
CN203434871U (zh) * 2013-08-28 2014-02-12 上海熔易焊接机制造有限公司 新型高频感应焊接电源结构
CN104601005A (zh) * 2015-01-30 2015-05-06 惟能科技（上海）有限公司 一种谐振偏频臭氧发生器电源
CN109921651A (zh) * 2019-04-01 2019-06-21 湖北工业大学 一种基于混合级联9电平的大功率超声波电源装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202818657U (zh) * 2012-10-11 2013-03-20 山东乐航节能科技股份有限公司 一种便携式感应加热装置
CN103368416A (zh) * 2013-07-31 2013-10-23 三峡大学 潜航器长距离直流馈电系统
CN203434871U (zh) * 2013-08-28 2014-02-12 上海熔易焊接机制造有限公司 新型高频感应焊接电源结构
CN104601005A (zh) * 2015-01-30 2015-05-06 惟能科技（上海）有限公司 一种谐振偏频臭氧发生器电源
CN109921651A (zh) * 2019-04-01 2019-06-21 湖北工业大学 一种基于混合级联9电平的大功率超声波电源装置

Similar Documents

Publication Publication Date Title
CN102064708B (zh) 电流输入型并联谐振直/直变换器及方法
CN102291014A (zh) 交流斩波-全桥整流的ac-dc变换器
CN103780068A (zh) 两级式单相逆变器输入二次谐波电流的抑制方法
CN203562976U (zh) 一种车载电源电路
CN102916604B (zh) 一种单相逆变器的调制方法
Azura et al. LLC resonant DC-DC converter for high voltage applications
CN102347704B (zh) 低压推挽逆变的直接dc-ac变换电路
CN116436444A (zh) 一种高压脉冲电源及其控制方法
CN105186914A (zh) 一种新型h6单相非隔离并网逆变器
CN104682762A (zh) 一种低漏电流并网逆变器
CN110943626A (zh) 基于级联Buck技术的超声波电源
Jittakort et al. A class D voltage source resonant inverter for ultrasonic cleaning application
CN101969302A (zh) 一种新型的开关谐振式功率超声波发生电路
Hong et al. A passive lossless soft-switching single inductor dual buck full-bridge inverter
CN109921651A (zh) 一种基于混合级联9电平的大功率超声波电源装置
Priyaa et al. Design and implementation of cascaded Z-Source Multilevel Inverter
Sivachidambaranathan High frequency isolated series parallel resonant converter
CN101005243B (zh) 柔性桥臂拓扑电路
CN102255540B (zh) 直流电压转换成交流电压的方法、电路和变换器
CN101976966A (zh) 零电流软开关技术的新型辅助逆变电源
CN201781429U (zh) 低电压输入全桥逆变的直接dc-ac变换电路
CN205042825U (zh) 扫频式超声波除垢装置
CN102263520A (zh) 直流电压转换成交流电压的电路、方法和变换器
CN102291015A (zh) 不控整流-直流推挽逆变的ac-dc变换器
Aparna et al. Series parallel resonant converter for Electrical Dischage Machining power supply

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20200331

RJ01 Rejection of invention patent application after publication