1) A hydrogen fuel cell is used as the source of a 120V/60Hz/2kW emergency AC power...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1) A hydrogen fuel cell is used as the source of a 120V/60Hz/2kW emergency AC power supply. The system consists of a Horizon H2000, a single-phase full-bridge inverter, a step-up transformer and an LC low pass filter as shown in the figure below. The plots of the output voltage and power as a function of the output current of the fuel cell are shown below. The fuel cell rated voltage is 28.8 V and its rated current is 70 A, for a total of 2016 W. Note that the voltage of the fuel cell varies with the output current and power. It decreases as the output power and current increase. A) Compute the turns ratio of the transformer for the fuel cell operating at the rated condition/power with the inverter operating with an amplitude modulation ratio (m₂) of 1. B) Calculate the value of ma when the load demanded from the AC power supply is null. Hint: Assume that the output voltage of the fuel cell at no-load (output current is zero) is 43 V. C) Compute the resonant, or cut-off, frequency of the second order LPF so that the magnitude of the dominant voltage harmonic across the load is 5% of the fundamental component. Assume that the inverter operates with unipolar SPWM with a triangular carrier of 900 Hz. + Vfc A + Vpri JZ JZ + Vsec + Vo Lf O + Cf Vo M > 50 45 40 35 30 25 20 15 10 5 0 2500 2000 1500 1000 500 0 0 0 10 10 20 20 30 30 H2000 U-I Curve 40 50 H2000 U-1 Curve H2000 P-I Curve 40 50 H2000 P-I Curve 60 60 70 70 80 80 90 A 90 A 1) A hydrogen fuel cell is used as the source of a 120V/60Hz/2kW emergency AC power supply. The system consists of a Horizon H2000, a single-phase full-bridge inverter, a step-up transformer and an LC low pass filter as shown in the figure below. The plots of the output voltage and power as a function of the output current of the fuel cell are shown below. The fuel cell rated voltage is 28.8 V and its rated current is 70 A, for a total of 2016 W. Note that the voltage of the fuel cell varies with the output current and power. It decreases as the output power and current increase. A) Compute the turns ratio of the transformer for the fuel cell operating at the rated condition/power with the inverter operating with an amplitude modulation ratio (m₂) of 1. B) Calculate the value of ma when the load demanded from the AC power supply is null. Hint: Assume that the output voltage of the fuel cell at no-load (output current is zero) is 43 V. C) Compute the resonant, or cut-off, frequency of the second order LPF so that the magnitude of the dominant voltage harmonic across the load is 5% of the fundamental component. Assume that the inverter operates with unipolar SPWM with a triangular carrier of 900 Hz. + Vfc A + Vpri JZ JZ + Vsec + Vo Lf O + Cf Vo M > 50 45 40 35 30 25 20 15 10 5 0 2500 2000 1500 1000 500 0 0 0 10 10 20 20 30 30 H2000 U-I Curve 40 50 H2000 U-1 Curve H2000 P-I Curve 40 50 H2000 P-I Curve 60 60 70 70 80 80 90 A 90 A
Expert Answer:
Related Book For
Posted Date:
Students also viewed these accounting questions
-
An industrial robot performs a machine loading and unloading operation. A PLC is used as the robot cell controller. The cell operates as follows: (1) a human worker places a work part into a nest,...
-
The General Auditors Office (GAO) of ABC jurisdiction issued a report on the XYZ Electric Cooperative, a large member-owned utility. This report reviewed the work of MNO Consulting. MNO found...
-
Now assume that Temp Force is expected to experience supernormal growth of 30 percent for the next 3 years, then to return to its long-run constant growth rate of 6 percent. What is the stocks value...
-
Consider a small exchange economy with two consumers, Astrid and Birger, and two commodities, herring and cheese. Astrids initial endowment is 4 units of herring and 1 unit of cheese. Birgers initial...
-
In 2010, in an attempt to increase the number of Americans covered by health insurance and reduce the cost of health care, Congress passed the Patient Protection and Affordable Care Act. A key...
-
Denver Office Equipment manufactures and sells metal shelving. It began operations on January 1, 2011. Costs incurred for 2011 are as follows (V stands for variable; F stands for fixed): Direct...
-
The given code snippet is implemented using linear probing technique, what change you have to make so that the quadratic probing is implemented. @Override public boolean put(String word, String...
-
The trial balance of Garvey, Inc., at September 30, 2012, does not balance: The accounting records hold the following errors: a. Recorded a $100 cash revenue transaction by debiting Accounts...
-
For a solution of 0.200 M Cu (NO3)2 in a 1-cm cell, the following data has been collected. Calculate the percentage transmittance, %T, for each absorbance. plot A vs. C and T% vs. C on the same...
-
I owe $46k on a $50k business loan that I got and purchased a home with. Tree fell on home got substantial insurance claim. I just sold home home for $85k. I made a $35k profit after closing costs....
-
Reading the Admonitions for women, chose one of the following questions and answer it as an initial post (and be sure to comment on classmates who have answered questions of their own): What does Ban...
-
On 4 January 2 0 2 0 Thabo deposited P 7 8 0 0 into savings account. The simple interest rate agreed upon was 6 . 2 % per annum. What will be accumulated amount in the savings account on 2 1 November...
-
Assume before the June 2022 floods, Pakistan could produce only two commodities: electric cars and wheat. Also assume that Pakistan can produce at any of the positions represented by the production...
-
Share your experience in regards to your transition from High School to University. What were your biggest challenges and accomplishments?
-
The financial staff of the Romulians Co. has compiled the following set of assumptions and forecasts to be used in the cash budgeting process: 1) Actual sales for November and December 2009 are given...
-
Find the area of the surface generated by revolving the para- metric curve x = cos 1, y = sin? 1 (0 < I sa/2) about the y-axis.
-
Determine whether the sequence is increasing, decreasing, or not monotonic. Is the sequence bounded? a n = 1/2n + 3
-
Find a formula for the inverse of the function. f(x) = e 2x1
-
How do you find the cross product a x b of two vectors if you know their lengths and the angle between them? What if you know their components?
-
In 2019, Maggy (34 years old) is an employee of YBU Corp. YBU provides a 401(k) plan for all its employees. According to the terms of the plan, YBU contributes 50 cents for every dollar the employee...
-
Matthew (48 at year-end) develops cutting-edge technology for SV Inc., located in Silicon Valley. In 2019, Matthew participates in SVs money purchase pension plan (a defined contribution plan) and in...
-
Paris participates in her employers nonqualified deferred compensation plan. For 2019, she is deferring 10 percent of her $320,000 annual salary. Assuming this is her only source of income and her...
Study smarter with the SolutionInn App