系统利用重复控制抑制非线性负载下的电压畸变，利用瞬时值反馈控制加快负载突变时的动态响应过程。

Repetitive control is used to reduce voltage distortion under nonlinear loads and instantaneous feedback control is designed to quicken the dynamic response process under abrupt load variation.

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仿真结果表明该控制方案具有很强的鲁棒性，在不对称负载的条件下能实现动态同步。

Simulation results verify that the proposed control strategy has strong robustness and can realize dynamic synchronization, even under the condition of asymmetrical load.

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从整体上对数字控制逆变焊机系统进行了仿真研究，提出用受控源的方法实现了动态电弧负载模型与系统的连接。

A system simulation study was done for full digital welding inverter, and a method of connecting dynamic arc load model to the system with controlled source was presented.

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