Homework Answers
True
The DC voltages are battery voltages, generally these are small values.
The electrical appliances work on AC .These ac voltages are higher than dc voltage.These voltages are obtained by switching opeartions(on/off).
Add Answer to:
QUESTION 1 While connecting a DC system to the AC system using an inverter, the DC...
QUESTION 8 When connecting any electrical AC generator to an electrical grid, the frequency, phase, and...
QUESTION 8 When connecting any electrical AC generator to an electrical grid, the frequency, phase, and voltage of the generator's final electrical output must match that of the grid. ○True ○ False QUESTION 9 As discussed in class, Inverters convert AC power to DC and Rectifiers convert DC to AC. Both are used in fully-rated power electronics in wind turbines to convert power from the stator and DC generator to the correct voltage and phase of the grid. O True...
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...
4-13 In the balanced three-phase dc-ac inverter shown in Fig. 4-12b, the phase-A average output v...
4-13 In the balanced three-phase dc-ac inverter shown in Fig. 4-12b, the phase-A average output voltage is van (t)-40.75 sin(at), where V-300V and a-2π x45 rad /s. The inductance L in each phase is 5 mH. The ac-motor internal voltage in phase A can be represented as et)-106.14sin(ot-6.6°)V, assuming this internal voltage to be purely sinusoidal. (a) Calculate and plot d^(), d,(), and dc(), (b) sketch T) and (c) sketch Tut)
4-13 In the balanced three-phase dc-ac inverter shown in...
P7.16 A 10-kVA three-phase VSI is supplied from a 230-V ac line through a si SIX- pulse diode rectifier. The inverter is designed for a unidirectional powee fer, from dc to ac. Assume the voltage...
P7.16 A 10-kVA three-phase VSI is supplied from a 230-V ac line through a si SIX- pulse diode rectifier. The inverter is designed for a unidirectional powee fer, from dc to ac. Assume the voltage safety margin of 40%, the cures, safety margin of 25%, and determine the minimum required voltage and cur- rent ratings of switches and diodes in the inverter.
P7.16 A 10-kVA three-phase VSI is supplied from a 230-V ac line through a si SIX- pulse diode...
DC-AC inverters have many commercial and residential applications, including uninterruptible powe...
DC-AC inverters have many commercial and residential applications, including uninterruptible power supply (UPS) units, adjustable speed drives (ASD) for AC motors, and electronic frequency changer circuits. They are also used in solar electrical systems where batteries are charged from solar panels and used as the input DC voltage source. The inverter circuit converts the DC into AC voltage of desired frequency. Most of us are also familiar with HVDC transmission systems, where high voltages are first converted from AC to...
QUESTION Cyril the Circuit Analyst is examining the interaction of both AC and DC sources with a circuit. The circu...
QUESTION Cyril the Circuit Analyst is examining the interaction of both AC and DC sources with a circuit. The circuit is drawn below. Pay careful attention to the arrows on the switches which show which are initially open, and which are initially closed. Assume that the capacitor is initially discharged at 0. All times are in seconds 10 mH 1-Os1-1s!=2s \ t = 5s 400 | 10cos(ox) 50 pF 10 mA At 0, the first switch closes connecting the current...
Q4. Most electronic systems need a dc voltage to work properly. The AC-to-DC power supply system ...
part g
Q4. Most electronic systems need a dc voltage to work properly. The AC-to-DC power supply system is including a transformer, a rectifier and a capacitor input filter. The AC input voltage is 110 Vrms at 60 Hz. (a) Draw the full wave bridge rectifier circuit with transformer which steps down voltage to safer and lower levels that are more suitable for use with diodes (b) Show how the capacitor input filter connects to the rectifier output in the...
Part 1 of an AC/DC circuit question thankyou Cyril the Circuit Analyst is examining the interaction...
Part 1 of an AC/DC circuit question
thankyou
Cyril the Circuit Analyst is examining the interaction of both AC and DC sources with a circuit The circuit is drawn below. Pay careful attention to the arrows on the switches which show which are initially open, and which are initially closed. Assume that the capacitor is initially discharged at t 0. All times are in seconds 10 mH t=5s 2s 0s-s 10cos(ax) 400 : 50 μF 10 mA (a) At0, the...
Styles AC Bus Local Loads T: OC Bus PV Generating DC/AC Station Zline Local Power Grid...
Styles AC Bus Local Loads T: OC Bus PV Generating DC/AC Station Zline Local Power Grid Inverter T1 T2 Figure Q2 In the microgrid in figure Q2, a solar PV station and the local power grid supply a series of local loads The PV generating station is rated at 2 MW and is operating at unity power factor. The PV station internal impedance is purely resistive equal to 50% based on its own rating of 2 MVA. The inverter DC...
Problem 3: Sinusoidal PWM or Six-Step Control of three-phase DC-AC Inverter (45 Points) Design a three-phase...
Problem 3: Sinusoidal PWM or Six-Step Control of three-phase DC-AC Inverter (45 Points) Design a three-phase inverter circuit for a solid oxide fuel cell, whose output voltage changes from 400 Vdc to 600 Vdc. Sinusoidal PWM (SPWM) A. If sinusoidal PWM is used to control the inverter, to obtain a three-phase 240 Vac (line- line RMS value) at 60 Hz, what is the inverter's modulation index (ma) range? (5points) B. Based on part A: Assume the fuel cell's output voltage...
QUESTION 8 When connecting any electrical AC generator to an electrical grid, the frequency, phase, and voltage of the generator's final electrical output must match that of the grid. ○True ○ False QUESTION 9 As discussed in class, Inverters convert AC power to DC and Rectifiers convert DC to AC. Both are used in fully-rated power electronics in wind turbines to convert power from the stator and DC generator to the correct voltage and phase of the grid. O True...
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...
4-13 In the balanced three-phase dc-ac inverter shown in Fig. 4-12b, the phase-A average output voltage is van (t)-40.75 sin(at), where V-300V and a-2π x45 rad /s. The inductance L in each phase is 5 mH. The ac-motor internal voltage in phase A can be represented as et)-106.14sin(ot-6.6°)V, assuming this internal voltage to be purely sinusoidal. (a) Calculate and plot d^(), d,(), and dc(), (b) sketch T) and (c) sketch Tut)
4-13 In the balanced three-phase dc-ac inverter shown in...
P7.16 A 10-kVA three-phase VSI is supplied from a 230-V ac line through a si SIX- pulse diode rectifier. The inverter is designed for a unidirectional powee fer, from dc to ac. Assume the voltage safety margin of 40%, the cures, safety margin of 25%, and determine the minimum required voltage and cur- rent ratings of switches and diodes in the inverter.
P7.16 A 10-kVA three-phase VSI is supplied from a 230-V ac line through a si SIX- pulse diode...
DC-AC inverters have many commercial and residential applications, including uninterruptible power supply (UPS) units, adjustable speed drives (ASD) for AC motors, and electronic frequency changer circuits. They are also used in solar electrical systems where batteries are charged from solar panels and used as the input DC voltage source. The inverter circuit converts the DC into AC voltage of desired frequency. Most of us are also familiar with HVDC transmission systems, where high voltages are first converted from AC to...
QUESTION Cyril the Circuit Analyst is examining the interaction of both AC and DC sources with a circuit. The circuit is drawn below. Pay careful attention to the arrows on the switches which show which are initially open, and which are initially closed. Assume that the capacitor is initially discharged at 0. All times are in seconds 10 mH 1-Os1-1s!=2s \ t = 5s 400 | 10cos(ox) 50 pF 10 mA At 0, the first switch closes connecting the current...
part g
Q4. Most electronic systems need a dc voltage to work properly. The AC-to-DC power supply system is including a transformer, a rectifier and a capacitor input filter. The AC input voltage is 110 Vrms at 60 Hz. (a) Draw the full wave bridge rectifier circuit with transformer which steps down voltage to safer and lower levels that are more suitable for use with diodes (b) Show how the capacitor input filter connects to the rectifier output in the...
Part 1 of an AC/DC circuit question
thankyou
Cyril the Circuit Analyst is examining the interaction of both AC and DC sources with a circuit The circuit is drawn below. Pay careful attention to the arrows on the switches which show which are initially open, and which are initially closed. Assume that the capacitor is initially discharged at t 0. All times are in seconds 10 mH t=5s 2s 0s-s 10cos(ax) 400 : 50 μF 10 mA (a) At0, the...
Styles AC Bus Local Loads T: OC Bus PV Generating DC/AC Station Zline Local Power Grid Inverter T1 T2 Figure Q2 In the microgrid in figure Q2, a solar PV station and the local power grid supply a series of local loads The PV generating station is rated at 2 MW and is operating at unity power factor. The PV station internal impedance is purely resistive equal to 50% based on its own rating of 2 MVA. The inverter DC...
Problem 3: Sinusoidal PWM or Six-Step Control of three-phase DC-AC Inverter (45 Points) Design a three-phase inverter circuit for a solid oxide fuel cell, whose output voltage changes from 400 Vdc to 600 Vdc. Sinusoidal PWM (SPWM) A. If sinusoidal PWM is used to control the inverter, to obtain a three-phase 240 Vac (line- line RMS value) at 60 Hz, what is the inverter's modulation index (ma) range? (5points) B. Based on part A: Assume the fuel cell's output voltage...
Most questions answered within 3 hours.
-
Calculate and plot the number and weight distributions of x-mers
found in a step-growth polymerization for...
asked 1 minute ago -
The Baily Corporation has developed a specialized software
program that improves inventory control capability. The following...
asked 5 minutes ago -
Problem 5-4A (Part Level Submission) Wolford Department Store is
located in midtown Metropolis. During the past...
asked 5 minutes ago -
Preparation of Benzoic Acid using a Grignard Reagent URGENT
1. During your Grignard formation, a small...
asked 28 minutes ago -
A uniform magnetic field is perpendicular to the plane of a wire
loop. If the loop...
asked 27 minutes ago -
At the peak of your career, your were earning $120,000 and
holding a top level position....
asked 30 minutes ago -
. A permanent magnet is dropped south-end-down through a horizontal
circular coil with a radius of...
asked 32 minutes ago -
Bernie's Beverages purchased some fixed assets classified as
5-year property for MACRS. The assets cost $28,000....
asked 46 minutes ago -
How many ATPs are produced from the catabolism of a 10-C
molecule of fatty acid under...
asked 51 minutes ago -
Before practicing a routine on the rings, a 64.8 kg gymnast
hangs motionless, with one hand...
asked 52 minutes ago -
If the K b of a weak base is 6.3 × 10 − 6 , what...
asked 59 minutes ago -
Which of the following is the minimum amount of moles of NaOH
that must be added...
asked 1 hour ago