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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
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題組內容
6.(20pt) Assume the PV is a current source inverter to deliver 1kW average power to the system.
(D)How to improve the power factor to 0.95. (5pt)
其他申論題
(b) Average power consumed by the resistor. (5pt)
#471732
(A)Calculate I. (5pt)
#471733
(B)Calculate IL. (5pt)
#471734
(C)Calculate power factor. (5pt)
#471735
1.Find minimum inductance L to keep the converter operated in continuous conduction mode.(10pt)
#471737
2.Ripple current on the inductor. (10pt)
#471738
3.Draw waveforms of both diode voltage and inductor current. (10pt)
#471739
(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.
#471740
(b) (10%) Obtain an approximate expression assuming a << r1 in the part (a).
#471741
(a) (10%) Determine Vin the plane bisecting the line charge.
#471742