(1) A DC/DC converter supplied by a 300Vdc has ON time of 2ms and switching frequency...
(1) A DC/DC converter supplied by a 300Vdc has ON time of 2ms and switching frequency of 25kHz. Determine the value of the average DC output voltage and the duty cycle.
(1) single phase inverter shown below is using a 1:10 step up transformer which supplies the power to 20W load lamps. If the secondary voltage has rms value of 120Vac and the transformer total winding resistance is 0.8W. Determine the rms input voltage
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(1) A DC/DC converter supplied by a 300Vdc has ON time of 2ms
and switching frequency...
4. A single phase inverter shown below is using a 1:10 step up transformer which supplies...
4. A single phase inverter shown below is using a 1:10 step up transformer which supplies the power to 20W load lamps. If the secondary voltage has rms value of 120Vac and the transformer total winding resistance is 0.8W. Determine the rms input voltage [15 Marks) i. Determine the period and frequency of oscillation for an inverter if the components have the following values: R1=2K, R2=20K, C1=0.04m F & C2=0.05mF [15 Marks) ii. Determine the value of capacitors to be...
bridge oad DC DC Vload DC For a single-phase DC-AC inverter with an RL load at the output. It is switching using the bi...
bridge oad DC DC Vload DC For a single-phase DC-AC inverter with an RL load at the output. It is switching using the bipolar SPWM method with the desired fundamental frequency of 400 Hz and the switching frequency of 20.4 kHz. Here the modulation index is 0.6, input DC is 200 V, load R-5 Ω and L 2 mH a. What's the RMS value of the fundamental component of the output voltage across RL? b. What's the RMS value of...
In this part of the term paper, design a single-phase switch-mode DC power supply with a forward ...
In this part of the term paper, design a single-phase switch-mode DC power supply with a forward converter. Provide answers to the questions below Please combine the single-phase full-wave rectifier from part two of your term paper with a forward converter to produce a switch-mode DC power supply, as shown below. The output of the bridge rectifier serves as input to the forward converter L1 Np: N BH621BH62 D, V1 Load C1 100p 45 Vrms D3 BH62 18H62 D4 Control...
Design a DC-DC boost converter, shown below, that converts an unregulated supply of 12.0 Vak into a load voltage of...
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...
Question 1 (25 marks) a) A full wave rectifier has 40V peak secondary voltage, 2,000uF capacitor...
Question 1 (25 marks) a) A full wave rectifier has 40V peak secondary voltage, 2,000uF capacitor and 1022 load. You may take the line frequency as 50Hz and voltage drop across a diode as 0.7V. i. Calculate the peak dc voltage (VA). (2 marks) ii. Calculate the dc load voltage (Vdcloed). (4 marks) iii. Calculate the ripple voltage (AVLoad). (4 marks) b) The capacitance, inductance and load resistance of a Buck step-down dc-to-dc converter are 1.0uF, 10uH and 20.022 respectively....
Is N N Vo V's Vo Vs LOAD LOAD Figure 1 It has been shown in...
Is N N Vo V's Vo Vs LOAD LOAD Figure 1 It has been shown in lectures that from the equality of power generation and power consumption, and as far as the average input/output voltages and currents are concerned, the buck and boost converters' operation in CCM (continuous current mode) are similar to the operation of the ideal AC transformers. So these converters may be considered as "ideal DC transformers". A buck converter operates with a duty cycle D 0.4,...
+ VDS Consider the Buck DC-to-DC converter shown above. Assume it is operated at a switching...
+ VDS Consider the Buck DC-to-DC converter shown above. Assume it is operated at a switching frequency, f 25 KHz, with a duty cycle, D- 0.4 a) Given the sketch of the inductor current, i(t), shown below, sketch the waveforms for the input current, (t), the output current, i(t), the diode current, ip(), and the capacitor current, ict).Also, compute their average, RMS and peak values. (Note: Some useful formulas are provided on the last page) 10 5 t (s) (b)...
A PV array with terminal voltage around 48 V under standard conditions is connected to a step-up dc-dc converter to supply a load at 120 V, 5 A. The input inductance is 8 mH with an internal resistanc...
A PV array with terminal voltage around 48 V under standard conditions is connected to a step-up dc-dc converter to supply a load at 120 V, 5 A. The input inductance is 8 mH with an internal resistance of 0.2 ohms, and the switching frequency is 5 kHz. Assuming ideal circuit components, calculate the duty ratio (k) and average input current (I1). Evaluate the maximum peak-to-peak input current ripple for the converter. If this current is limited to 2% of...
of CM with Consider the flyback converter with DC input voltage Vd of 48v. The output...
of CM with Consider the flyback converter with DC input voltage Vd of 48v. The output voltage is regulated to 5V and the turn's ratio transformer is considered as 6:1. The magnetizing inductance of the transformer is 150?H The converter is operated in C a switching frequency of 200 kHz with the load power of 30W. Assuming the converter to be lossless, calculate b. switch voltage stress neglecting the leakage inductance of the transformer
a9a resistive load. Inductor 3-(35 pts) Design a converter that has an input voltage of 24 V DC and supplies 18 V DC to current is desired to be continuous and must not change more than 30 % of i...
a9a resistive load. Inductor 3-(35 pts) Design a converter that has an input voltage of 24 V DC and supplies 18 V DC to current is desired to be continuous and must not change more than 30 % of its average value voltage ripple must be lower than 2 %. Switching frequency is 10 kHz. a) Draw the circuit diagram. Calculate the duty ratio. Calculate values for 2 desired conditions of the inductor current and determine the value of the...
4. A single phase inverter shown below is using a 1:10 step up transformer which supplies the power to 20W load lamps. If the secondary voltage has rms value of 120Vac and the transformer total winding resistance is 0.8W. Determine the rms input voltage [15 Marks) i. Determine the period and frequency of oscillation for an inverter if the components have the following values: R1=2K, R2=20K, C1=0.04m F & C2=0.05mF [15 Marks) ii. Determine the value of capacitors to be...
bridge oad DC DC Vload DC For a single-phase DC-AC inverter with an RL load at the output. It is switching using the bipolar SPWM method with the desired fundamental frequency of 400 Hz and the switching frequency of 20.4 kHz. Here the modulation index is 0.6, input DC is 200 V, load R-5 Ω and L 2 mH a. What's the RMS value of the fundamental component of the output voltage across RL? b. What's the RMS value of...
In this part of the term paper, design a single-phase switch-mode DC power supply with a forward converter. Provide answers to the questions below Please combine the single-phase full-wave rectifier from part two of your term paper with a forward converter to produce a switch-mode DC power supply, as shown below. The output of the bridge rectifier serves as input to the forward converter L1 Np: N BH621BH62 D, V1 Load C1 100p 45 Vrms D3 BH62 18H62 D4 Control...
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...
Question 1 (25 marks) a) A full wave rectifier has 40V peak secondary voltage, 2,000uF capacitor and 1022 load. You may take the line frequency as 50Hz and voltage drop across a diode as 0.7V. i. Calculate the peak dc voltage (VA). (2 marks) ii. Calculate the dc load voltage (Vdcloed). (4 marks) iii. Calculate the ripple voltage (AVLoad). (4 marks) b) The capacitance, inductance and load resistance of a Buck step-down dc-to-dc converter are 1.0uF, 10uH and 20.022 respectively....
Is N N Vo V's Vo Vs LOAD LOAD Figure 1 It has been shown in lectures that from the equality of power generation and power consumption, and as far as the average input/output voltages and currents are concerned, the buck and boost converters' operation in CCM (continuous current mode) are similar to the operation of the ideal AC transformers. So these converters may be considered as "ideal DC transformers". A buck converter operates with a duty cycle D 0.4,...
+ VDS Consider the Buck DC-to-DC converter shown above. Assume it is operated at a switching frequency, f 25 KHz, with a duty cycle, D- 0.4 a) Given the sketch of the inductor current, i(t), shown below, sketch the waveforms for the input current, (t), the output current, i(t), the diode current, ip(), and the capacitor current, ict).Also, compute their average, RMS and peak values. (Note: Some useful formulas are provided on the last page) 10 5 t (s) (b)...
of CM with Consider the flyback converter with DC input voltage Vd of 48v. The output voltage is regulated to 5V and the turn's ratio transformer is considered as 6:1. The magnetizing inductance of the transformer is 150?H The converter is operated in C a switching frequency of 200 kHz with the load power of 30W. Assuming the converter to be lossless, calculate b. switch voltage stress neglecting the leakage inductance of the transformer
a9a resistive load. Inductor 3-(35 pts) Design a converter that has an input voltage of 24 V DC and supplies 18 V DC to current is desired to be continuous and must not change more than 30 % of its average value voltage ripple must be lower than 2 %. Switching frequency is 10 kHz. a) Draw the circuit diagram. Calculate the duty ratio. Calculate values for 2 desired conditions of the inductor current and determine the value of the...
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