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.

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Power of supplied by generator when it is loading

I have a cummins generator which is having capacity in name plate as 803 kw. While running the load test, each phase current shows 153 A, 53 A, 120 A and neutral current 27 A or something. How can i ...
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I need advice for my project

My name is Clement and I'm from Malaysia. I'm currently studying for a diploma for electrical engineering. For my program, I need to design and make a mini portable genset. I have bought all the ...
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Understanding generator wear and rotor electrical measurements

I have a generator that I am attempting to fix, and I am getting readings that are out of spec on the rotor brushes. Per some instructional videos I found, I should be measuring 5V AC on the rotor ...
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136 views

Calculating for Load Resistance given a T network in between the source and the load

Problem: Calculate the value of load resistance (Rl) for which maximum transfer occurs. Attempt: What I know is that for the maximum transfer to occur, the load resistance must be equal to the source ...
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408 views

Two 3-phase generators in parallel

I need to calculate the PF of supply V2, a 3-phase generator that is operating in parallel with another generator (11kV star-connected). Both the generators are equally sharing the mechanical load of ...
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178 views

Why does the electrical power of a generator that is close to the short-circuit fault location decrease?

I was reading about shunt faults in power systems in the book Fundamentals of Power System Protection by Y.G. Paithankar and S.R. Bhide and the following sentence confused me: "Further, in an ...
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64 views

Solar Panel Voltage vs. Consumer Solar Generator

I have a 235 W solar panel that I wish to take with me on camping trips. I’m looking at getting a Goal Zero “solar generator” product to store the energy from the panel, specifically the lithium-ion ...
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41 views

Powering PC from motor generator

Commonly there are basic motor generator sets (with or without automatic throttle to compensate for load variations) and then there are those with an inverter to produce a cleaner sine wave using ...
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59 views

Help with Faraday’s law of induction

What does faraday’s equation for induction gives us ? Now my book says it’s just the induced emf and other times it’s the average induced emf and i’am confused. For example , the book says that the ...
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40 views

Dedicated Generator/current limiting/off-grid

I’m trying to design an off grid solution that would allow me to charge a Tesla (240v@48a) without having to buy a ton of batteries (since most car charging would be done at night) I would like to ...
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83 views

Can't get a small 3 phase generator to produce 1/10 of its rated output. I need a little help.

My concern I am writing about is with a small generator not producing current or being able to be loaded. First I'll describe the product. I bought a couple mini brushless 3-phase generators (motors). ...
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63 views

Regulating Volatge Output of Synchronous Motor

I'm attempting to regulate the output voltage of a synchronous motor being used as a generator. I've hooked up a LM317 along with a high voltage capacitor and some diodes. I decided to attach the ...
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61 views

Measuring generated power (kW) in a power plant and storing/logging values

Given an electric power plant (hydro energy) that currently has just an analog indicator for how much power (kilowatts) is generated, which components would be needed to measure the generated power ...
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530 views

Calculating the real and reactive power of a transmission line

I have a single machine connected to an infinite bus with the following parameters: Sending end power = 3.75MW RL=5.18 ohms XL=130 ohms VS (Generator bus)=161kV VR (Infinite bus)=161kV Sending end ...
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129 views

How can a DFIG have total control of reactive and active power?

I'm confused with the power flow of the rotor to the grid, specifically the both-way direction
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77 views

Is it a disadvantage for a generator to supply both resistive and reactive current to its load?

Suppose The power network 1 has a resistive load and therefore the current supplied by the generator 1 to the load is purely resistive. The power network 2 has a resistive + inductive load and ...
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450 views

Lenz's law to determine the direction of induced current

I came across this MCQ in my text book, it says: To determine the direction of current induced in AC generators, we use.... (i) Lenz's law (ii) Fleming's right hand rule (iii) both of them ...
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156 views

Controlling alternator load for peddle bike

I want to create bike-powered alternator system to recharge 12 V batteries. People can only do about 300 W mex. To turn an alternator with higher torque requirements, especially when the battery it ...
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110 views

Connecting a medium sized 1 kVA Inverter with a 2 kVA Generator

I have a 1 kVA inverter which is using a 12 V battery to generate 220 V AC (battery is connected to a charge controller and is being charged by a PV). In addition I've got a 2 kVA generator. ...
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387 views

What is OCV times SCC?

Is the product of open circuit voltage and short circuit current meaningful? Does it have any significance (in a generator, for example)?
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603 views

How to Find Angle of Armature Current

Two identical three-phase, Y-connected, synchronous generators are connected in parallel to equally share a load of 900 kW at 11 kV and 0.8 pf lagging. The synchronous impedance of each generator is 0....
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92 views

Using DC generator as power source and switch in multi

I have the following: DC Generator 5V regulator lipo charger (5v input), 3.3v regulator, lipo battery device requiring 3.3v power I only want the battery to be connected to the 3.3 regulator (and ...
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180 views

Sychronous generator vs dc generator

I am wondering, if a sychronous generator has a smaller posibility to be burnt (be destroyed permanently) from a short circuit, that has a dc generator with parallel wound or a seperately excited dc ...
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124 views

Thermoelectric Generator output computation

Can I compute the output voltage of a thermoelectric generator? I want to compare the theoretical and actual values (generated voltage) of a thermoelectric generator. I'm about to use TEC-12706.
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177 views

Compact small electricity generator using induction coil

Traditional brushless motors use wound induction coils surrounded by permanent magnets. Would it be possible to create a less efficient version generator by rearranging the orientation of the coils to ...
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47 views

redirecting excess power in fluctuating supply?

noob here. i have basic knowledge. im trying to build a generator (with a universal motor) that first needs to direct up to 14.4v to a 12v battery. after generating sufficient power, anything above 14....