弦繞組 的英文怎麼說
中文拼音 [xiánràozǔ]
弦繞組
英文
chord winding-
Both software and hardware are synthesized. three - phase bridge inverter used, the current in each phase is made similar to sine wave using current closed loop control
以igbt三相橋作為主逆變電路，對電機繞組電流按正弦規律進行電流閉環控制實現正弦波細分驅動。As a result of employing multilevel phase - shifted method with zig zag connection in transformer secondary, in the primary the current harmonics their orders are lower than 6m 1 are eliminated ( m is the number of power cell each phase ). in the inverter side because of using pulse shifting pwm control, the equivalent switch frequency of output is m times as high as one h - bridge, so the output voltage waveform of the inverter is near sine with less harmonics
對于整流電路，由於採用變壓器移相多重化整流，在理論上可以實現曲折變壓器一次繞組中低於6m 1次諧波電流相互抵消（ m為串聯單元個數） ；對于逆變電路，由於採用移相pwm控制方式，等效開關頻率提高m倍，因此輸出電壓接近正弦波，諧波含量較小。
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