摘要
根据品质因数的定义,得出了线圈内阻不能忽略时,LC回路的空载品质因数QP与线圈固有品质因数Q0的关系:QP=Q20-1(1+1/Q0),当Q0 1时,有QP=Q0。同时指出,用传统的串并联阻抗等效的方法计算出的QP的值是不准确的。从而为在低Q值下的计算提供了1个更为准确的结果,进一步明晰了品质因数的概念。
Based on the definition of Q factor, wnen the loss of inductor should be considered, the tie between the unloaded quality factor QP of LC resonant circuit and the intrinsic quality factor Q0 of inductor coil is: QP = √(Q0^2 - 1) ( 1 +1/Q0 ), QP = Q0, while Q0〉〉1. Meanwhile, it has been indicated that QP calculated is inaccurate by using traditional equivalent impedance theorem. So it provides a more accurate outcome on low Q factor calculation, further clarify ing the concept of Q factor.
出处
《电力学报》
2007年第2期187-189,192,共4页
Journal of Electric Power
关键词
线圈
品质因数
LC谐振回路
阻抗等效
inductor coil
Q factor
LC resonant circuit
equivalent impedance