Kirkbetz at 18:59, 25 January 2010

2010-01-25T18:59:02Z

← Older revision		Revision as of 11:59, 25 January 2010
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			==Article Suggestions==
	Rewrite the notes for the wiki.		(Please remove these when you complete the article.)
	Draw and explain the effect of the non-linear B-H curve on current waveforms for a voltage excited inductor.		# Rewrite the notes for the wiki.
	Explain how to measure the B-H curve experimentally.		# Draw and explain the effect of the non-linear B-H curve on current waveforms for a voltage excited inductor.
	If the B-H curve was traced out more quickly in the experiment above, would the curve look different? If so why?		# Explain how to measure the B-H curve experimentally.
	Show how to calculate the core losses of a nonlinear inductor using its i-v curve.		# If the B-H curve was traced out more quickly in the experiment above, would the curve look different? If so why?
	Explore transformers with more than one secondary winding.		# Show how to calculate the core losses of a nonlinear inductor using its i-v curve.
	What is the input impedance of an idea transformer with two secondaries, one with N2 turns and one with N3 turns, each with a different load resistor on attached.		# Explore transformers with more than one secondary winding.
	How do the mutual impedances relate to the turns ratios in transformers with more than one secondary?		# What is the input impedance of an idea transformer with two secondaries, one with N2 turns and one with N<sub>3</sub> turns, each with a different load resistor on attached.
	Develop a circuit model for a non-ideal transformer with multiple secondaries.		# How do the mutual impedances relate to the turns ratios in transformers with more than one secondary?
	Develop the theory of autotransformers.		# Develop a circuit model for a non-ideal transformer with multiple secondaries.
	Explore how leakage flux affects the inductance of an inductor. What if that flux is then recovered and the effect accounted for by mutual inductance? Does the result agree with the simple calculation of inductance without leakage?		# Develop the theory of autotransformers.
	Describe the coupling factor, k, used in Spice simulators and other circuit simulators. Relate it to the leakage, magnetizing, and mutual inductances.		# Explore how leakage flux affects the inductance of an inductor. What if that flux is then recovered and the effect accounted for by mutual inductance? Does the result agree with the simple calculation of inductance without leakage?
	Derive the Y / Δ transformations.		# Describe the coupling factor, k, used in Spice simulators and other circuit simulators. Relate it to the leakage, magnetizing, and mutual inductances.
	Explore the voltage regulation x 100% as a function of the power factor angle on the load of a transformer. (You will note some surprising results in some cases.)		# Derive the <math>Y/\Delta</math> transformations.
	Describe the open circuit and short circuit test as applied to transformers.		# Explore the voltage regulation <math>(V_{full ~load} - V_{no ~load} ) \over {V_{full ~load} } </math>x 100% as a function of the power factor angle on the load of a transformer. (You will note some surprising results in some cases.)
	Calculate and compare how much power can be delivered with three phase circuits as compared to a single phase circuits. Assume that the same amount of copper is available for the wire of both systems.		# Describe the open circuit and short circuit test as applied to transformers.
	And if you don't understand any of the above, no surprise.		# Calculate and compare how much power can be delivered with three phase circuits as compared to a single phase circuits. Assume that the same amount of copper is available for the wire of both systems.
			# And if you don't understand any of the above, no surprise.

Kirkbetz: New page: Rewrite the notes for the wiki. Draw and explain the effect of the non-linear B-H curve on current waveforms for a voltage excited inductor. Explain how to measure the B-H curve experimen...

2010-01-25T18:57:38Z

New page: Rewrite the notes for the wiki. Draw and explain the effect of the non-linear B-H curve on current waveforms for a voltage excited inductor. Explain how to measure the B-H curve experimen...

New page

Rewrite the notes for the wiki.
Draw and explain the effect of the non-linear B-H curve on current waveforms for a voltage excited inductor.
Explain how to measure the B-H curve experimentally.
If the B-H curve was traced out more quickly in the experiment above, would the curve look different? If so why?
Show how to calculate the core losses of a nonlinear inductor using its i-v curve.
Explore transformers with more than one secondary winding.
What is the input impedance of an idea transformer with two secondaries, one with N2 turns and one with N3 turns, each with a different load resistor on attached.
How do the mutual impedances relate to the turns ratios in transformers with more than one secondary?
Develop a circuit model for a non-ideal transformer with multiple secondaries.
Develop the theory of autotransformers.
Explore how leakage flux affects the inductance of an inductor. What if that flux is then recovered and the effect accounted for by mutual inductance? Does the result agree with the simple calculation of inductance without leakage?
Describe the coupling factor, k, used in Spice simulators and other circuit simulators. Relate it to the leakage, magnetizing, and mutual inductances.
Derive the Y / Δ transformations.
Explore the voltage regulation x 100% as a function of the power factor angle on the load of a transformer. (You will note some surprising results in some cases.)
Describe the open circuit and short circuit test as applied to transformers.
Calculate and compare how much power can be delivered with three phase circuits as compared to a single phase circuits. Assume that the same amount of copper is available for the wire of both systems.
And if you don't understand any of the above, no surprise.

Study - Revision history

Kirkbetz at 18:59, 25 January 2010

Kirkbetz: New page: Rewrite the notes for the wiki. Draw and explain the effect of the non-linear B-H curve on current waveforms for a voltage excited inductor. Explain how to measure the B-H curve experimen...