If waveform is purely sinusoidal, it was said the S^2 = P^2 + Q^2,
where S is apparent power, P is real power and Q is reactive power.
In this formula, I have two questions. Firstly, S, P, Q here are what
kind of power, average power? rms power (rms U

The second question is that I think, for energy, apparent energy should be a sum of real energy and reactive energy. I learned this from Andrew's article: http://blogs.sun.com/agabriel/entry/ac_power_power_factor_explained Am I right on the concept? If so, do you see the energy relationship between apparent/active/reactive is different with power?

Finally, for these AC concepts, is there a good text book in amazon.com?

Thanks in advance.

*** rms I)? Instantaneous power (U ***I from moment to moment)? After clarify the definition, can anyone show a prove?The second question is that I think, for energy, apparent energy should be a sum of real energy and reactive energy. I learned this from Andrew's article: http://blogs.sun.com/agabriel/entry/ac_power_power_factor_explained Am I right on the concept? If so, do you see the energy relationship between apparent/active/reactive is different with power?

Finally, for these AC concepts, is there a good text book in amazon.com?

Thanks in advance.

--

Life is the only flaw in an otherwise perfect nonexistence

-- Schopenhauer

Life is the only flaw in an otherwise perfect nonexistence

-- Schopenhauer

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