通过移相变压器补偿电流谐波

Harmonic Current Compensation by Phase Shift Transformer

当三相电气装置含有多个同一的谐波电流发生源时,可应用移相变压器技术抑制输入侧电流谐波,以减小对电网的污染。单元串联型高压变频器是这一技术成功应用的范例之一。本文通过共模移相和差模移相的概念阐明移相变压器技术的机理,指出只有差模移相才能够补偿电流谐波,给出差模移相角的计算公式。本文可以作为移相变压器电气设计的依据。

When an apparatus contains a lot of the same harmonic current generators,the phase shift transformer technique is widely used to deduce its inference.The well-known example is the high voltage invert.Proposing a concept of common and differential mode phase shift,the paper introduces the mechanism of this technique,and points out that only the differential mode phase shift is effective.The paper gives out relevant calculate formulas,enabling the apparatus designers to choose the electrical parameters of the...