逆变频率高，明显提高了整机效率，节能效果显著。
High inverter frequency, obviously improved the efficiency of the machine. high energy saving ability.
选择了合适的逆变频率，降低IGBT模块的开关损耗。
Through choosing suitable frequency of inverter, switching losses of domestic IGBT modules are reduced.
采用IGBT模块，逆变频率达18khz，动态响应速度快、稳定性能好、。
IGBT power modules, 18khz inverter frequency, fast response time, high arc stability, almost spatter-free welding.
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