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首頁 > 中山◆電機◆電路學 > 102年 - 102 國立中山大學_碩士班招生考試_電機系(丁組)：電路學#110202 >

題組內容

6.(20pt) Assume the PV is a current source inverter to deliver 1kW average power to the system.

(B)Calculate I_L. (5pt)

其他申論題

4.(10pt) Phase voltage and phase current of a load are given as v(t)=141cosotV, i()=14sin(ωt+30°) A. Find average power and reactive power of the load.

(a) RMS current. (5pt)

(b) Average power consumed by the resistor. (5pt)

(A)Calculate I. (5pt)

(C)Calculate power factor. (5pt)

(D)How to improve the power factor to 0.95. (5pt)

1.Find minimum inductance L to keep the converter operated in continuous conduction mode.(10pt)

2.Ripple current on the inductor. (10pt)

3.Draw waveforms of both diode voltage and inductor current. (10pt)

(a) (10%) Determine the self-inductance of a toroidal coil of N turns of wire wound on an air frame with mean radius ri and a circular cross section of radius a.

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