通过实验，比较了在焊接电流、通电时间以及电极压力等参数变动时，单相工频点焊机与逆变直流点焊机的焊接工艺性能差异。
With the multi parameters fluctuated, the different of the technology performance between AC spot welding machine and inverter spot welding machine is analyzed.
瀚金电气的产品包括：IGBT逆变直流弧焊机，IGBT逆变直流空气等离子切割机，电阻焊机，焊接送丝机等焊接与切割设备。
The products of HJ electric are IGBT inverter DC arc welders, IGBT inverter DC air plasma cutting machine, resistance welders, welding wire feeder and other welding and cutting equipment.
将直流变为频率可调的交流电流就称逆变。
The DC into AC current adjustable frequency that the inverter on.
SVPWM具有较高的直流电压的利用率，开关损耗小，从而实现了高性能的逆变输出。
SVPWM technique have many good qualities, such as less pulsating torque, high usage of DC bus voltage, less switching loss, better high-speed regulation performance.
调节为基础，利用快速可控硅做开关元件，研制的一台新型等离子弧切割电源——输出直流100a逆变切割电源。
M. adjusted, by the use of high speed SCR gate, a new convening power source with output of 100a for plasma are cutting is developed.
该方法主要研究南方电网2008年多馈入直流系统各个逆变站由于滤波器投切产生的谐波电流的交互影响。
The interaction of harmonic currents caused by switching ac filters of inverter stations in the multi-infeed DC system of China Southern Power Grid in the year of 2008 is mainly researched.
揭示了逆变站电压支撑不足是限制直流功率紧急提升充分发挥作用的主要因素。
The study reveals that the voltage support in the inverter is the main limiting factor for the effectiveness of the HVDC emergent power modulation.
该方法基于微分几何理论，并将直流输电系统等效为两个分别连接在整流侧和逆变侧的变导纳支路。
The approach proposed in this paper is based on differential geometric theory, and the HVDC systems are taken as a variable admittance connected at the inverter or rectifier ac bus.
逆变式弧焊电源是新一代的弧焊电源，其特点是速度快，直流输出电流波纹小，电弧稳定，质量小，体积小，能耗低。
The inverter arc welding power source is the new power source and features high speed, small DC current ripple, stable arc, light weight, small capacity and low power consumption.
采用了直流斩波和全桥逆变技术，以IGBT为直流斩波元件、IPM模块为全桥逆变元件实现了高压电源的高效小型化。
With technology of DC chopper and H-bridge inverter used, IGBT is used as DC chopper and IPM is used as H-bridge inverter to realize a small volume of the power source.
本文就GNG系列逆变式高压真空直流电源的原理系统、设计特点、技术性能等做一简要论述。
In this paper, the principle system, design characteristic, technology performance of high voltage vacuum power supply in GNG series inverter type are briefly mentioned.
采用电磁隔离霍尔元件进行电流检测，采用了IGBTCPV 363m 4 K模块组成逆变桥来实现功率主回路直流到交流的逆变。
Electromagnetism isolated Hall sensor is used to sense the phase current of the PMSM, and the IGBT CPV363M4K module is used to implement the inverter.
根据永磁同步电动机数学模型的特点，结合电流反馈型脉宽调制逆变驱动电器的结构，推导了无刷直流电动机系统的数学模型。
Mathematical model of BLDCM system is derived from the characteristic of mathematical model of PMSM and structure of inverting circuit of CRPWM.
针对统一潮流控制器在逆变变换过程中所具有的直流侧电压不断波动的特点，提出了动态SPWM方法，以克服逆变电源的直流电压波动对SPWM法的逆变输出的精确性所造成的影响。
Taking account of the voltage floating of the DC side of Unified Power Flow Controller in working process, a dynamic SPWM method is proposed, to promote the accuracy of the output of the inverter.
本文就GNG系列逆变式高压真空直流电源的原理系统、设计特点、技术性能等做一简要论述。
In this paper, the principle system, design characteristic, technology performance of high voltage vacuum power supply in GNG series invert...
本文就GNG系列逆变式高压真空直流电源的原理系统、设计特点、技术性能等做一简要论述。
In this paper, the principle system, design characteristic, technology performance of high voltage vacuum power supply in GNG series invert...
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