Method and apparatus for determining effective power consumed by a capacitor

摘要

The waveform of a periodic voltage applied to a capacitor is set at step S1. The capacitance of a desired capacitor is input at step S2. The waveform of the periodic voltage applied to both ends of the capacitor is subjected to Fourier expansion at step S5. Namely, the periodic voltage is Fourier-expanded in terms of sine and cosine-wave series of high-order frequency components. Further, effective power consumed by the capacitor is calculated at step S6, by using data on a temperature characteristics, a voltage characteristics and a frequency characteristic of the capacitance and dielectric tangent of the capacitor. <IMAGE>