CAJ | 학술논문

提出了一种适合脉冲MAG焊工艺的零电压软开关电路拓扑,并对其工作机理进行了系统研究.为提高软开关弧焊电源控制的灵活性,开发了基于DSP的数字化控制系统,由软件对脉冲调制(PwM)波形进行移相控制,实现开关管的零电压开通和关断.利用DSP内部集成的PWM发牛模块,通过选择合适的工作方式实现了PWM信号的直接数字化控制,从而实现了脉冲MAG焊高频逆变和低频脉冲波形调制.试验结果表明,所设计的软开关脉冲MAG焊逆变电源具有全范围的软开关能力,焊接性能好,稳定可靠.
제출료일충괄합맥충MAG한공예적령전압연개관전로탁복,병대기공작궤리진행료계통연구.위제고연개관호한전원공제적령활성,개발료기우DSP적수자화공제계통,유연건대맥충조제(PwM)파형진행이상공제,실현개관관적령전압개통화관단.이용DSP내부집성적PWM발우모괴,통과선택합괄적공작방식실현료PWM신호적직접수자화공제,종이실현료맥충MAG한고빈역변화저빈맥충파형조제.시험결과표명,소설계적연개관맥충MAG한역변전원구유전범위적연개관능력,한접성능호,은정가고.
This paper puts forward a novel zero voltage switching(ZVS)circuit which satisfies technological request of pulse MAG welding power source and also systemically discusses the operation principle of the circuit.In order improve tne soft-switching arc welding inverter control flexibility,the pulse MAG welding power source has developed on the bases of DSP control svstem.The system realized ZVS as a result of phase-shifted pulse width modulation(PWM)control by software.By the help of the intemal integrated PWM modules in DSP and the appropriate methods of work,the direct digital contorl of PWM signal aB well as high-frequency and low frequency pulse modulation of inverter are achieved.The result of the experiment demonstrate that the soft-switching pulse MAG welding inverter power source has got soft-switching in full range,and the welding quality is excellent.