A battery charger requires a DC-DC nuck converter to reduce the 380VDC voltage coming from the rectification of the three phase mains voltage . Calculate the value of the duty cycle, inductance, and capacitance required to meet the following specifications:
Vi(voltage input)=320V, Vo=100V,Fs(swith frecuency)=30kHz,Po(out put power)=20Kw, ΔiL(current ripple=10%IL, ΔvC(voltage ripple)=5%VC
A battery charger requires a DC-DC nuck converter to reduce the 380VDC voltage coming from the...
The baterry bank of an electric vehicle requires a power converter to step up its output voltage in order to feed the electric traction system . Compute the required duty cycle, inductance and capacitance to meet the following specifications : Vi(voltage input)=100V, Vo=360V,Fs(swith frecuency)=15kHz,Po(out put power)=50Kw, ΔiL(current ripple=10%IL, ΔvC(voltage ripple)=5%VC
Design a DC-DC boost converter, shown below, that converts an unregulated supply of 12.0 Vak into a load voltage of 30.0 Ve and load current of 0.25 A. The switching frequency of the transistor is 100 kHz. The transistor has an on-resistance of 0.15 Ω and the diode drops 0.7 V when it is conducting. The voltage ripple (Av) is taken as 20 mVpp The circuit has 80% conversion efficiency. Find the DC input-current (Iden), duty-cycle (D), inductance (L), power-dissipation...
A DC-DC converter is needed to supply a 5V load from a battery input. For flexibility, it is desired to accommodate many different battery types, so the possible input voltages range from 3.0V to 8.0V. The output ripple is to be less than 1% peak to peak. The load can have a power level between 10W and 50W. a) Propose a conversion circuit to address these requirements. What switching frequency will be reasonable? b) Select capacitor and inductor values for...
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1. Analysis and design of a buck-boost converter. A buck-boost converter is illustrated below. + licit) + reee c= R { v(t) A practical implementation using a MOSFET and diode is illustrated below. D + Voi(t) – H + iqi(t) IT int) lic(t) iz(t) + LE vi(t) c R v(t) For this problem, you must employ the methods of inductor volt-second balance, capacitor charge balance, and the small ripple approximation as discussed in...
1 2
+
–
i(t)
C R
L
iT i(t)
iD
+
–
L C R
1. Analysis and design of a buck-boost converter: A buck-boost converter is illustrated in Fig. 1(a),
and a practical implementation using a transistor and diode is shown in Fig. 1(b).
+
(a)
Vg
v
Figure 1 Buck–boost converter
of Problem 1: (a) ideal converter
circuit, (b) implementation using
MOSFET and diode.
–
Q1
D1
(b) +
Vg
v
Page 2
iL
(t) + vL...