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Reducing the minimum output power of soft-switching inverter arc welding power supplies 被引量:1
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作者 傅强 薛松柏 《China Welding》 EI CAS 2010年第3期45-49,共5页
The full-bridge zero-voltage and zero-current switching inverter, which can adjust the output power by keeping the duty-cycle of lagging arm constant, changing the duty-cycle of leading arm, is a common circuit topolo... The full-bridge zero-voltage and zero-current switching inverter, which can adjust the output power by keeping the duty-cycle of lagging arm constant, changing the duty-cycle of leading arm, is a common circuit topology of soft-switching inverter arc welding power supplies. However, the output power still remains a certain value when the duty-cycle of leading arm decreases to zero. The working-mode of soft-switching inverter and the waveforms of major parameters with the condition of duty-cycle of leading arm being zero are studied in this paper. U-1 characteristic experiments prove that the minimum output power of soft-switching circuit, which depends on the charged voltage of capacitors in parallel with leading arm, can be decreased by reducing the duty-cycle of lagging arm. By switching working-modes between half-bridge and full-bridge, the output power can swing from zero to the power rating. 展开更多
关键词 SOFT-SWITCHING inverter arc welding power supplies minimum output power
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A novel arc welding inverter with unit power factor based on DSP control 被引量:3
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作者 陈树君 曾华 +2 位作者 杜利 殷树言 陈永刚 《China Welding》 EI CAS 2006年第1期53-56,共4页
A novel inverter power source is developed characterized with constant output current and unit power factor input. Digital signal processor ( DSP ) is used to realize power factor correction and control of back-stag... A novel inverter power source is developed characterized with constant output current and unit power factor input. Digital signal processor ( DSP ) is used to realize power factor correction and control of back-stage inverter bridge of the arc welding inverter. The fore-stage adopts double closed loop proportion and integration (PI) rectifier technique and the back- stage adopts digital pulse width modulation ( PWM) technique. Simulated waves can be obtained in Matlab/Simulink and validated by experiments. Experiments of the prototype showed that the total harmonic distortion (THD) can be controlled within 10% and the power factor is approximate to 1. 展开更多
关键词 arc welding inverter power factor correction (PFC) digital signal processor (DSP) HARMONIC
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Controlling the output power of soft switching arc welding inverter by two-stage continuous PWM method
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作者 傅强 赵善麒 范新南 《China Welding》 EI CAS 2016年第1期64-70,共7页
The full bridge zero voltage zero current switching ( FB-ZVZCS ) , which could adjust the output power by keeping the duty ratio of lagging leg constant and changing the duty ratio of leading leg, was a common circu... The full bridge zero voltage zero current switching ( FB-ZVZCS ) , which could adjust the output power by keeping the duty ratio of lagging leg constant and changing the duty ratio of leading leg, was a common circuit of soft switching arc welding inverter power source. However, when the duty ratio of leading leg was reduced to zero, the output power stayed the constant value instead of becoming zero. The working status and waveforms of some major parameters were studied in this paper while the duty ratio of leading leg was zero. It was concluded that the minimum output power of soft switching inverter was related to the charging voltage of paraUel capacitors, and the output power also could be reduced by reducing the duty ratio of lagging leg. A novel two-stage continuous PWM control method that could switch working-mode between full bridge and half bridge was put forward in this paper. This kind of control method could further reduce the output power of soft switching inverter in order to meet the requirement of low heat input of sheet metal welding. 展开更多
关键词 soft switching inverter arc welding power source minimum output power two stage continuous PWM control
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Micro-arc Oxidation Inverter Power Supply Based on the Limited Bipolar Soft-switch Control Method 被引量:2
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作者 ZENG Min CHEN Xiaohong CAO Biao 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2009年第3期390-394,共5页
In order to overcome many limitations of the conventional power supplies, such as ponderosity, big wastage, and simplex output characteristic, a dual-inverter power supply is designed to meet the different requirement... In order to overcome many limitations of the conventional power supplies, such as ponderosity, big wastage, and simplex output characteristic, a dual-inverter power supply is designed to meet the different requirements of micro-arc oxidation. The main circuit structure and principle of the dual-inverter power supply for micro-arc oxidation is described, the control system and the control adjustment method are also introduced. The dual-inverter technology is adopted in micro-arc oxidation power supply. The limited bipolar control mode is applied in the power inverter circuit for adjusting the voltage, and various voltage waveform can be obtained by controlling the chopper circuit. Meanwhile, the control accuracy and response speed are improved greatly because of the higher inverter frequency. The power supply can output direct current(DC) waveform, DC pulse waveform, symmetry alternating current(AC) waveform, asymmetry AC waveform, and so on. Besides, the parameters such as pulse width, range, frequency, duty cycle can be adjusted. The experimental result shows that the power supply has many advantages, such as stable output, wonderful waveform consistency and obvious advantage in technique, and it can meet the requirements of micro-arc oxidation process fully. 展开更多
关键词 micro-arc oxidation power supply inverter CHOPPER limited bipolar
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Design method for transistor-inverted welding power supplies
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作者 刘会杰 冯吉才 李卓然 《China Welding》 EI CAS 1998年第2期76-81,共6页
From the viewpoint of reliability and practicability, a general design method and the related considerationsfor transistor- inverted welding power supplies are proposed in this paper. The detail contents are composed ... From the viewpoint of reliability and practicability, a general design method and the related considerationsfor transistor- inverted welding power supplies are proposed in this paper. The detail contents are composed of the choice ofinverters, the choice and protection of transistors, the determination of inverting frequency, the design of transformers,and the choice of output rectifiers and rectifying diodes. Besides, a concrete design example of the transistor-invertedpower supply for plasma arc cutting is introduced. 展开更多
关键词 inverted power supply welding power supply design method TRANSISTOR
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Digital arc welding power supply based on real-time operating system
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作者 张红兵 黄石生 周漪清 《China Welding》 EI CAS 2007年第3期1-5,共5页
A digital arc welding power supply was designed with the advanced reduced instruction set computer machine (ARM) and embedded real-time multi-task operating system micro C/OS- Ⅱ. The ARM, with its powerful calculat... A digital arc welding power supply was designed with the advanced reduced instruction set computer machine (ARM) and embedded real-time multi-task operating system micro C/OS- Ⅱ. The ARM, with its powerful calculating speed and complete peripheral equipments, is very suitable to work as the controller of the digital power supply. The micro C/OS- Ⅱ transplanted in ARM, helps to improve the respondent speed against various welding signals, as well as the reliability of the controlling software. The welding process consists of nine tasks. The tasks of great significance on reliability of the welder, for example, the A/D conversion of current and voltage, enjoy top priority. To avoid simultaneous-sharing on A/D converter and LCD module, two semaphores are introduced in to ensure the smooth performance of the welding power supply. Proven by experiments ,the ARM and the micro C/OS- Ⅱ can greatly improve both the respondent speed and the reliability of the digital welder. 展开更多
关键词 micro C/OS-Ⅱ real-time operating system DIGITIZATION arc welding power supply
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Soft switching arc welding power source using output inductor as resonant inductor
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作者 陈树君 王军 +1 位作者 卢振洋 殷树言 《China Welding》 EI CAS 2002年第2期109-113,共5页
Full bridge Zero Voltage Switch PWM converter combines advantages of the PWM control technique and resonant technique. However, Full ZVS is achieved only under large load current because resonant tank of this circu... Full bridge Zero Voltage Switch PWM converter combines advantages of the PWM control technique and resonant technique. However, Full ZVS is achieved only under large load current because resonant tank of this circuit is made up of the parasitic capacitance of the power semiconductors and the leakage inductor of the transformer primary. In this paper two saturable inductors as magnetic switches are added to secondary, so output inductor is always reflected to primary and assists resonant transition. Full ZVS is achieved under lower load current. The above mentioned investigated results are validated by the computerized simulation and hardware circuit experiment. 展开更多
关键词 arc welding inverter power source soft switching resonant inductor computerized simulation
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Structure and Control of an Inverter Type Power Source for Robot Arc Welding
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作者 都东 韩赞东 +2 位作者 肖平 张前 张人豪 《Tsinghua Science and Technology》 SCIE EI CAS 1998年第2期80-82,共3页
An inverter type power source system for robot arc welding is considered. The power source includes several isolated gate bipolar transistor (IGBT) inverter power units. The output current of every individual power un... An inverter type power source system for robot arc welding is considered. The power source includes several isolated gate bipolar transistor (IGBT) inverter power units. The output current of every individual power unit is regulated by an identical single chip microcomputer to enable the whole power source system to work over a wide range of continuous output current with good dynamic properties. This inverter type power source satisfies robotic welding requirements. 展开更多
关键词 arc welding robot inverter power source unit assembly
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高频脉冲复合直流微TIG焊接电源及其电弧形态特征 被引量:1
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作者 王奕楷 庞世炫 +2 位作者 王燮阳 黄增好 曹彪 《焊接》 北大核心 2023年第3期54-59,共6页
针对微TIG小电流电弧不稳定的问题,研发了一种高频脉冲复合直流的微TIG焊接电源。通过测试输出电流波形,结合高速摄影采集电弧形貌,研究小电流电弧形态特征及高频脉冲复合直流对极限小电流电弧、6 mm间隙微电弧的影响,探讨微TIG电弧形... 针对微TIG小电流电弧不稳定的问题,研发了一种高频脉冲复合直流的微TIG焊接电源。通过测试输出电流波形,结合高速摄影采集电弧形貌,研究小电流电弧形态特征及高频脉冲复合直流对极限小电流电弧、6 mm间隙微电弧的影响,探讨微TIG电弧形态形成的原因及高频脉冲作用效果。结果表明,该电源输出的高频脉冲电流可实现快速变换,且具有精度高、输出稳定的特点;随着电流减小,电弧形态发生变化,并非保持“钟罩状”,高频脉冲电流可提高微TIG电弧稳定性,使电弧在平均电流低至2 A时也能维持稳定燃烧;6 mm间隙时,8 A微TIG电弧在燃烧过程中会发生大幅度形态变化,复合高频脉冲可以降低其变化幅度,提高挺度。 展开更多
关键词 高频脉冲 焊接电源 微型钨极氩弧焊 电弧稳定性
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基于能量−峰值温度控制的脉冲加热电源的设计
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作者 李光尧 杨凯 +1 位作者 滕瑞 张瑞 《焊接》 北大核心 2023年第3期47-53,共7页
为改善焊锡焊接过程中脉冲加热电源输出峰值温度不可控、升温速度慢、加热能量控制精度低的问题,提高加热过程温度控制的稳定性,实现升温曲线的平滑过渡,设计了一种基于能量-峰值温度控制的精密脉冲加热电源。分析了电源负载特性、热电... 为改善焊锡焊接过程中脉冲加热电源输出峰值温度不可控、升温速度慢、加热能量控制精度低的问题,提高加热过程温度控制的稳定性,实现升温曲线的平滑过渡,设计了一种基于能量-峰值温度控制的精密脉冲加热电源。分析了电源负载特性、热电偶动态响应特性对电源电气特性的要求。基于逆变变流技术设计了电源系统主电路及控制电路。基于高性能STM32控制器设计了数字化控制系统。提出了基于能量-峰值温度控制的控制算法,对设计的电源进行了输出温度-电特性测试,与传统PID控制进行了比较。对焊头端面加热温度分布特性进行了测试,以微型贴片电感验证电源的工艺适应性。试验结果表明,电源实现了加热脉冲能量的精密控制,输出温度、时间控制精度高,可实现快速升温条件下峰值温度的精确控制,有效抑制温度过冲,焊头温度分布均匀性得到改善,能满足电子器件微型化对焊接工艺参数精密控制的要求。 展开更多
关键词 脉冲加热 温度控制 逆变电源 焊锡焊接 热电偶
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弧焊电源的数字化控制技术 被引量:21
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作者 吴开源 黄石生 +1 位作者 李阳 陆沛涛 《半导体技术》 CAS CSCD 北大核心 2005年第1期72-75,共4页
阐述了弧焊电源数字化控制技术的意义,介绍了用单片机、DSP及CPLD/FPGA等新型半导体器件实现弧焊电源数字化控制技术的方式,指出了弧焊电源数字化控制技术的发展趋势。
关键词 弧焊电源 逆变器 数字化控制 单片机
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国内外埋弧焊的发展状况 被引量:49
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作者 李鹤岐 王新 +2 位作者 蔡秀鹏 唐雪锋 杜丽敏 《电焊机》 2006年第4期1-6,共6页
叙述了目前国内外埋弧焊的发展现状,介绍了适合于各种焊接整流器埋弧焊成套设备的数字控制系统及采用单片机控制逆变埋弧焊机的组成和控制原理。详细讲述了多电源串列双(多)丝埋弧焊、单电源并列双丝埋弧焊、冷丝和热丝填充埋弧焊、单... 叙述了目前国内外埋弧焊的发展现状,介绍了适合于各种焊接整流器埋弧焊成套设备的数字控制系统及采用单片机控制逆变埋弧焊机的组成和控制原理。详细讲述了多电源串列双(多)丝埋弧焊、单电源并列双丝埋弧焊、冷丝和热丝填充埋弧焊、单电源串连双丝埋弧焊的工艺特点和使用优点。 展开更多
关键词 埋弧焊 数字控制 晶闸管电源 逆变焊机 离效埋弧焊
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软开关逆变式弧焊电源的设计 被引量:12
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作者 张光先 邹增大 +1 位作者 尹海 李思海 《焊接学报》 EI CAS CSCD 北大核心 2002年第1期14-18,共5页
软开关技术是解决逆变弧焊电源可靠性的核心技术。本文提出了一种新的软开关逆变弧焊电源的设计方案 ,该方案基本上可实现空载、短路、燃弧全负载范围内的软开关状态。本文分析了超前臂的关断功耗与并联电容之间的关系 ,串联电容及回路... 软开关技术是解决逆变弧焊电源可靠性的核心技术。本文提出了一种新的软开关逆变弧焊电源的设计方案 ,该方案基本上可实现空载、短路、燃弧全负载范围内的软开关状态。本文分析了超前臂的关断功耗与并联电容之间的关系 ,串联电容及回路电感对环流期的电流变化的影响。并指出了滞后桥臂零电流关断区域 ,以及超前臂和滞后臂的零开通条件。在此基础上提出了引入无功电流分量解决空载及轻载时软开关失败问题的方案 ,以及几个主要谐振参数的设计方法。在实践中采用本方案表明 ,降低了开关应力及损耗 ,提高了整机可靠性 。 展开更多
关键词 软开关 弧焊电源 逆变焊机 设计
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一种微弧氧化逆变电源控制系统 被引量:7
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作者 曾敏 陈小红 +3 位作者 曹彪 江伟 刘方 王晓东 《华南理工大学学报(自然科学版)》 EI CAS CSCD 北大核心 2009年第2期40-44,共5页
为满足微弧氧化工艺要求,设计出一种两级逆变式微弧氧化电源,介绍了该电源的控制系统.它以高性能DSP作为控制核心,通过调节输出两组4路PWM(脉宽调制)信号分别驱动前级功率逆变电路和后级斩波逆变电路.功率逆变电路采用有限双极性的控制... 为满足微弧氧化工艺要求,设计出一种两级逆变式微弧氧化电源,介绍了该电源的控制系统.它以高性能DSP作为控制核心,通过调节输出两组4路PWM(脉宽调制)信号分别驱动前级功率逆变电路和后级斩波逆变电路.功率逆变电路采用有限双极性的控制方式以实现电压的调节,通过控制斩波逆变电路可以得到所需的各种电压波形.同时,该电源控制系统还具有过流、过欠压、过热、参数超限等故障诊断与保护功能.试验结果表明,该控制系统可以实现精密、稳定的电源控制,提高电源的适应能力. 展开更多
关键词 微弧氧化 电源 逆变器 控制系统 斩波
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多功能数字化弧焊逆变电源人机交互系统 被引量:13
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作者 周雪珍 朱志明 +1 位作者 符策健 纪圣儒 《电焊机》 2007年第1期6-10,共5页
针对多功能数字化弧焊逆变电源用于不同焊接方法时工艺过程不同和焊接参数众多的特点,采用键盘输入和LCD显示设计开发了基于数字信号处理器DSP的人机交互系统。通过数据结构的通用化设计和程序流程的优化设计,该系统实现了焊接工艺过程... 针对多功能数字化弧焊逆变电源用于不同焊接方法时工艺过程不同和焊接参数众多的特点,采用键盘输入和LCD显示设计开发了基于数字信号处理器DSP的人机交互系统。通过数据结构的通用化设计和程序流程的优化设计,该系统实现了焊接工艺过程和焊接参数的方便设置和统一管理,用户操作和显示界面简洁、直观、灵活,极大地提高了多功能数字化弧焊逆变电源的实用性。 展开更多
关键词 人机交互 弧焊逆变电源 多功能 数字化控制
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IGBT逆变式波形控制CO_2弧焊电源的研究 被引量:11
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作者 潘雪峰 都东 +1 位作者 韩赞东 张人豪 《电焊机》 1996年第6期16-18,共3页
本文针对IGBT弧焊逆变器,提出并实现了适于短路过渡CO_2气体保护焊的输出波形控制方法。对焊接电弧参数实时采样以及工艺试验均表明,所研制的逆变式波控CO_2弧焊电源对减小金属飞溅和改善焊缝成型均有明显效果。
关键词 焊接 波形控制 逆变电源 IGBT 二氧化碳
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基于PWM整流器的弧焊逆变电源的PFC技术 被引量:6
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作者 黄继强 陈树君 +1 位作者 王冬平 殷树言 《电力电子技术》 CSCD 北大核心 2003年第2期38-40,45,共4页
针对三相弧焊逆变电源功率因数校正技术特点 ,提出了基于PWM整流器的弧焊逆变电源PFC的新方案 ,并对PWM整流器模型进行了分析和研究 。
关键词 弧焊逆变电源 PWM整流器 PFC技术 脉宽调制 功率因数
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双零软开关弧焊逆变电源 被引量:11
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作者 陈树君 卢振洋 +2 位作者 黄鹏飞 殷树言 蒲春华 《焊接学报》 EI CAS CSCD 北大核心 2002年第3期1-5,共5页
全桥零压零流脉宽调制变换器在全桥零电压脉宽调制变换器中增加一隔直电容 ,使原边电流在箝位续流时段很快的衰减到零并保持 ,固定臂的功率器件是零电流开关 ,移相臂的功率器件是零电压开关。这样 ,一方面使具有关断拖尾电流特性的IGBT... 全桥零压零流脉宽调制变换器在全桥零电压脉宽调制变换器中增加一隔直电容 ,使原边电流在箝位续流时段很快的衰减到零并保持 ,固定臂的功率器件是零电流开关 ,移相臂的功率器件是零电压开关。这样 ,一方面使具有关断拖尾电流特性的IGBT可以很容易的用到全桥软开关变换器中 ,另一方面大大减少了变换器的附加环路能量 ,同时具有小的占空比损失 ,低的副边寄生振荡和宽的软开关切换的负载范围等优点。最后 ,采用上述研究成果研制了一台 10kW级采用FB -ZVZCS -PWM变换器的软开关弧焊逆变电源样机。温升试验表明 ,研制的软开关焊机的温升比同类型的硬开关焊机的温升低近 2 0℃ ,大大减少了焊机的开关损耗。同时 ,由于焊机的功率元件是零开关 ,大大减少了器件的电压、电流应力 。 展开更多
关键词 弧焊逆变电源 软开关 零电压开关 零电流开关
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基于ARM微控制器的CO_2电弧焊全数字化逆变电源设计 被引量:5
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作者 朱锦洪 路凯通 +1 位作者 石红信 李国伟 《焊接学报》 EI CAS CSCD 北大核心 2007年第8期5-8,共4页
采用基于ARM7TDMI-S内核的LPC2131微控制器设计了一种全数字化控制的CO2电弧焊逆变电源,完成了硬件电路和软件程序。在设计方案中采用了独立的送丝系统和全桥逆变主电路,选择了送丝速度作为其它焊接参数控制的基准。充分利用了片内软硬... 采用基于ARM7TDMI-S内核的LPC2131微控制器设计了一种全数字化控制的CO2电弧焊逆变电源,完成了硬件电路和软件程序。在设计方案中采用了独立的送丝系统和全桥逆变主电路,选择了送丝速度作为其它焊接参数控制的基准。充分利用了片内软硬件资源,ARM控制器产生一路双边沿PWM脉冲并转换输出,通过电流、电压检测以分时进行短路电流和燃弧电压控制。其硬件结构简单可靠,控制软件可通过升级接口更新算法。文中介绍了设计思路和方法,对全数字化焊接电源研究和开发具有参考价值。 展开更多
关键词 全数字化电源 逆变器 CO2电弧焊 短路过渡
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基于DSP的全数字IGBT弧焊逆变电源设计 被引量:5
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作者 李宏 徐德民 +1 位作者 焦振宏 贺昱曜 《电力电子技术》 CSCD 北大核心 2004年第3期65-67,共3页
设计了基于DSP的全数字IGBT弧焊逆变器,给出了IGD515EI的应用电路和软件流程图,分析了关机损坏现象,提出了解决方案。
关键词 电源 驱动电路/弧焊逆变器 数字信号处理器
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