Questions tagged [generator]
A generator is a device that generates electricity from mechanical energy via different energy sources such as heat or kinetic energy of water.
929 questions
8 votes
2 answers
429 views
Is overvoltage possible in a grid with only rotating generators?
On the 28th of April 2025 a major blackout occurred in Spain and Portugal. The European transmission grid operators provided an analysis report describing what happened that day without identifying ...
- 603
-2 votes
1 answer
108 views
Why rotor coil (winding) of a generator doesn't short circuit
Why rotor coil (winding) of a generator doesn't short circuit after long time.. We know an inductor become short circuit when dc current supply in it for a long time.
- 95
2 votes
2 answers
193 views
Using small transformer for large generator
There are 12 transformers used in MATLAB's IEEE 39-bus system example, and every single of them is rated at 100 MW apparent power (default value) even though they are connected to generators having ...
- 149
1 vote
0 answers
74 views
MCU data logger design without any power supply/batteries
Assume we are to create a simple MCU data logger that will record the amount of times the apartment door has been opened. Door has a small SPDT limit switch fitted, which pulls the pin of the MCU low ...
- 144
2 votes
4 answers
721 views
Winding Turns For a Very Small Generator
I'm building a small generator to power an LED. Basically a magnet will pass by a coil to power the LED for an instant. For my question, you can imagine any suitable input variables (diameter of wire, ...
2 votes
3 answers
479 views
Running a three-phase AC generator at varying RPM and output voltage?
I'm volunteering at a non-profit railway museum where we're rebuilding a 1940 45-ton diesel-electric locomotive. Currently, it has a diesel engine that, in proportion to the throttle position, runs ...
- 39
1 vote
0 answers
81 views
How to calculate overall THDi and THDv for a group of non-linear loads?
I'm working on a project involving multiple non-linear electrical loads, and I want to estimate the total THDi (Total Harmonic Distortion of Current) and, if ...
- 11
0 votes
0 answers
50 views
THDV and voltage dip for generator sizing
I’m using the Cummins GEN SIZE website to perform generator sizing, and I’d like to understand how the software calculates THDV% (Total Harmonic Distortion of Voltage) across all load steps. This ...
- 11
1 vote
0 answers
103 views
Use small generator to mimic power from a CR2032 battery [closed]
I wish to manually turn a small electric motor to use it as a generator. I wish to use this generator to power a radio transmitter that is normally powered by a CR2032 coin cell battery. When I ...
- 11
-1 votes
1 answer
291 views
What kW generator is required to run a 20hp motor?
I am trying to build a machine which will use an AC motor driven by a generator. I hope to build the prototype with no battery and run the power directly from the generator to the AC motor. I need ...
- 11
0 votes
1 answer
195 views
Unbalanced 3 phase load on engine generator : what consequences?
Short version : What happens when connecting a very unbalanced load on a 3 phase engine generator? Long version : On the product we are developing, we use a 380VAC (3phase) to DC converter. On ...
- 9,675
-2 votes
1 answer
251 views
Motorcycle Regulator Rectifier using buck converter method
please help me as a beginner. (Maybe I will copy the same question on several forum sites to add references) I am making a regulator rectifier (RR) for a motorbike that uses the buck converter method. ...
0 votes
0 answers
50 views
Capability curve of synchronous generator
What is the equation that better describes the lower bound of capability curve which is core end heating limit as shown in this figure from Wikipedia 'Capability curve' : Wiklipedia
4 votes
2 answers
147 views
How do I power this RC-300 Sputnik Soviet-Era 1971 Signal generator
Reducing this to one answerable question. The rest can be answered in other questions. I wish to "power-up" the equipment shown in the photos (some details below). How can I do this while ...
- 51
0 votes
2 answers
160 views
modern remote interlock?
Sometimes we want mutual exclusion at different physical locations in a distributed electrical system. (For example, a remote interlock for a generator. There are Kirk key systems but these are too ...
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