Questions tagged [power-engineering]
Power electrical engineering. Includes industrial electrical engineering (i.e. motors, switchboards), transmission and distribution (poles, wires, transformers, grids) and generation.
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What does resonance means in inductive coupling?
From what I understood: resonance helps achieve higher coupling coefficients in coils.
What does it mean and how is it achieved?
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Why mutual inductance be less than or equal to geometric mean of self inductances of coils?
I understand when coils are coupled together the leakage of flux into surroundings causes mutual inductance to be less than self ones but why it has to be less than or equal to geometric mean of the ...
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Transmission Lines based on proximity skin and self and mutual inductances [closed]
In transmission line the proximity effect and mutual inductance between the two conductors and three conductors are same. Also the skin effect is due to internal flux.
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Does the center tap of a single phase distribution transformer get bonded to the grid neutral? [duplicate]
Here are the two wiring diagram.
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Is this how a single phase transformer is connected to multiple houses? [closed]
Single phase transformer serving 3 houses:
I am not sure if this correct. Can someone confirm?
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RF power transmission control in U-blox GSM modules
I am using the SARA-U270 GSM module and want to test energy-saving techniques. One technique I would like to try is power transmission control, adjusting the transmission power in dBm based on the ...
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Mobile Power Distribution Unit: Mains Cable Size
I'm currently working on constructing a mobile power distribution unit and I need some assistance with a specific aspect of it.
The unit is designed to accommodate both types of power networks found ...
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How to increase current by reducing voltage? [closed]
I have a 400kv HV generator of 500 mA , but I want to increase the current by 10 time or more by reducing less voltage as possible/sufficient , help
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Terminology: Proper way to denote typical European 3-phase AC grid
The widely known 3-phase grid in Europe with 50 Hz and 400 V between two phases and 230 V between each phase and neutral is often referred to as "3 x 400 V" or "3 x 230 V".
Is one ...
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Would reducing the air gap between the rotor and stator to micrometer/nanometer scale distance proportionately increase a motor's power?
I'm asking this because the smaller the distances between electromagnets, the stronger the electromagnetic field.
I don't know if this would mean a proportional increase in power, be it either torque ...
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Reactive power calculation: what did I do wrong?
I calculated the question and I did not get the same answer as in the book. Could someone please explain why my method is not correct?
Question:
My solution:
Book solution:
The problem is from the ...
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Why does disconnecting the receiving end of a transmission from the sending end increase the voltage at the receiving end? [closed]
Some background information:
I have a transmission line circuit (included below). The rated voltage is 63.639kV and the rated current is 325A. The characteristic impedance is 30.3 Ohms. I also have ...
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IEEE 34-Bus Radial Distribution Test System
Whenever I look up IEEE 34-bus test systems, the following images are what is presented. I often find the first image in papers related to optimal capacitor studies, the second image I find in any ...
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What is the highest voltage currently in use for power transmission?
This is merely a question of idle curiosity that I hit a dead-end trying to research.
While the Ekibastuz-Kokshetau high-voltage transmission line famously[citation needed] holds the record for ...
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Why are transmission lines typically 115, 230, or 500 kV?
Is there a historical or technical reason why US high-voltage transmission lines are typically 115, 230, or 500 kV? (ref). These seem like semi-random numbers. I found that 115 kV goes back to 1917 at ...
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