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.

Filter by
Sorted by
Tagged with
0
votes
1answer
29 views

Applying Thevenin's theorem between 3 points

I'm studying about transistor polarisation and got confused by this application of Thevenin's theorem, can someone please explain why eT is between B and M and why Vcc stayed even though it's not ...
0
votes
2answers
75 views

How do you connect alternators in series?

What does the circuit diagram of three phase generators connected in series look like? I know they are usually connected in parallel for obvious reasons.
0
votes
1answer
25 views

Damping to reduce error signals

So ive been doing some research on how overshoot can be reduced in an AC servo position system. I found out that tacho generators are used connected from the load to the motor that drives this load. ...
0
votes
1answer
49 views

Specifications of a motor which will light an led (momentarily) from hand-spinning?

EDIT: I feel I might have placed the emphasis wrongly in my original question so I'll try to revise it here. In the video cited the demonstrator can be seen spinning a small "hobby" motor ...
0
votes
0answers
54 views

How to convert high AC voltage generator to DC voltage to charge a capacitor

I have bought several high voltage generator which outputs AC voltage. I wish to convert this high AC voltage to DC voltage to charge a capacitor. I have tried connecting the output (10kV) to a 20kV ...
0
votes
2answers
56 views

Mechanical to electrical power conversion calculations [closed]

I'm working on an electrical power generation project , where the prime mover's shaft rotation speed is variable (for example a wind turbine). We have an initial guess at the optimal speed and torque ...
0
votes
3answers
56 views

Single phase vs 3 phase generator

I am in India. We have 3 phase power coming in from the grid. They don't do single phase for anything over 3 kVA. 4 wires from the pole to a fuse box. 415V, 3 wires each going to a separate fuse and ...
2
votes
2answers
117 views

what's “wrong” with diesel generator power?

The electric company was working on the power lines for four days out in the woods, so they put our street on huge diesel generators (each was the size of a small car) that ran constantly to supply us ...
0
votes
0answers
29 views

UPS in front of an ATS for generator protection

At the countryside house there is this setup: And I am trying to protect the generator and house load from brief ~ 1s power outages like so: It works fine in normal conditions. Trouble is when I ...
0
votes
2answers
47 views

A generator would need to produce 'x' Volts in order to provide 'y' Amps? Am I understanding this correctly?

Let's say I have a device that requires 190A to work. My generator has an internal resistance of 2 Ω. The device has a resistance of 0.3 Ω. This would mean that the load on the generator is now 2.3 ...
0
votes
0answers
42 views

Performance of thermoelectric generator

I would like to build a self-powered device on the surface of a vehicle without modifying it. It is possible to generate enough power though thermoelectric generator by the temperature difference of ...
0
votes
0answers
20 views

Calculation of current generated by generator when no load is connected

I just started 3-phase circuits and in my book it written that "for a delta connected coils of generator, in a balanced system the resultant emf in the closed circuit will be zero and hence there ...
1
vote
1answer
48 views

What governs the output voltage of a three-phase generator?

If you have a three-phase generator (or motor run as a generator), what part of it governs the output voltage? For example the speed at which you rotate the shaft governs the output frequency, but ...
0
votes
1answer
53 views

Creating a 1PPS signal froma a 10 MHz CMOS Output Signal

Is it possible to "create" a 1PPS signal using an Agilent 8165A signal generator? We currently don't have a way of testing a 1PPS signal directly, so we're looking at "making our own&...
0
votes
1answer
39 views

Why stationary armature is preferred for commercial use

While reading a book on electrical machines, I found a point that says that for power generation, a stationary armature is the preferred type. If in any generator, there must be moving parts, why is ...
0
votes
1answer
45 views

Circuit giving values on both AC and DC

I have a generator stopper which works on 220 volt AC (in India 220 volt AC is normal supply) and has an electromagnet which pulls up a lever and the generator is stopped. It works perfectly when the ...
1
vote
2answers
60 views

Synchronous Speed

What is the difference between an induction motor and a generator as far as synchronous speed is concerned? If they both run at 60hz how is the generator providing power while the motor uses the power?...
4
votes
3answers
105 views

Reduce 32 amps generator output to 10 amps

First you need to please understand that I am a truck driver, I lift heavy things and have a smaller brain pan than you good readers. Aka; not an intellectual that understands elictrickery. While on ...
0
votes
1answer
58 views

What is the actual direction of real current in an A.C. generator? From the North pole to the South?

I see diagrams of a current being generated in a loop or square-ish section of wire that is rotating between two magnetic poles... a north on one side and a south on the other... BUT, the current ...
0
votes
0answers
25 views

Moment calculation for DC serial generator question

DC serial generator tag information : 9.25kW, 185V, 1500rpm . this is the table I have two solutions, which one might be right
2
votes
2answers
143 views

Alternator output rating

Overview: I am currently working on a project that requires a 24v alternator, which is powered by a mower engine. This engine in particular runs around 3,000 RPM, and does not exceed 3,200 RPM (based ...
0
votes
0answers
52 views

Switch type for electrical generator bonded to floating neutral

I have an electrical power generator and for it to properly work with it connected to the house it must be converted from bonded neutral to floating neutral according to these instructions. I was ...
1
vote
2answers
53 views

Can you get 240 volts and 50 amps from paralleled inverter generators?

I'm here for help solving the problem of suppling a 240v, 45amp kiln off the grid. The catch is, we can't just use a large portable generator. So, -can you put three or more inverter generators in ...
6
votes
5answers
5k views

Is it safe to touch 200 volts DC?

I was watching this YouTube video. The content maker simply declared that 200/300 volts DC is safe to touch. I think the capacitor used in that circuit is limiting the current. That's why nothing ...
0
votes
1answer
39 views

Received a new Tektronix AFG1022 function generator, I would like to see if I could output a higher amplitude using a transformer or amplifier

I'd like to operate in a 0-12 V range, I would like to see what the best option would be to increase the voltage at the output. Our maximum frequency is 1Hz if there may be an issue with attenuation.
0
votes
1answer
75 views

How to test power output of an 8.5kW generator?

I found a very cheap 8.5 kW AC generator which works on gasoline. Produces 220 V, 380 V and 12 V as output. Some people online say is fake and it can't have 8.5 kW, that it actually has 2 kW and the ...
0
votes
1answer
32 views

What electric setup do I need to get electricity from a BLDC motor?

I'm trying to create a small scale wind turbine for a project. I plan on using a BLDC motor with some blades on it to capture artificially created wind. I'm new to electronics, but I was thinking of ...
1
vote
0answers
19 views

In a non-magnet, excited-coil generator, what percentage of the generator's total output is used to excite the coil?

I am building a DC permanent-magnet generator with the magnets in the rotor. The stator coils are my unique winding. The overall efficiency of the generator is measured with a digital torque meter ...
0
votes
1answer
30 views

DC generator circuit

total novice here so forgive me if I sound daft. I’m currently building a circuit that is using a small DC motor in reverse to charge a battery. One like the Anker Powercore type. I currently have 2 ...
-1
votes
2answers
45 views

Minimal information energy conversions [closed]

I am trying to make a generator and before making it, I would need to know how many kWh it generates, in order to make sure it is actually feasible or if I should redesign it. I am just a highschooler ...
1
vote
0answers
58 views

Voltage/Frequency characteristics as a motor dies off

So, hopefully this is a simple enough answer for someone. I was recently posed a question concerning the coastdown characteristics of a pump as they pertain to the trip setpoints of a breaker. One ...
0
votes
1answer
85 views

Attempt to build DIY high current power supply from car alternator?

Recently I had posted about a thread related to a bench DIY high current transformer 12VDC supply that I'm trying to built. But due to some transformer and diode rectifier limitations that project may ...
0
votes
0answers
64 views

Windmill 3 Phase AC control PCB

I've created a PCB for my newly built 3D printed Windmill. Now I am not entirely sure about all the components and the way they function, so I'd like to have your opinion on the circuitry before I ...
0
votes
2answers
57 views

Varying PMDC motor shaft rpm, how does it affect efficiency?

I am working on a project to harvest electrical power from a rowing machine by connecting a permanent magnet DC motor to the flywheel of the rower. However, my knowledge of electrical motors, and ...
1
vote
0answers
17 views

Transmission Bus Admittance Question

I have a question about calculating the admittance between buses in the single line diagram shown below: The solution I have been given shows that the admittance between bus 2-2 is found by adding ...
1
vote
2answers
40 views

Engine driven EDF

We all know that an electric motor can be reversed to generate electricity. My question is, will it work the same way if I were to do this in an EDF? The EDF that I’ve been watching, is producing 35 ...
5
votes
3answers
541 views

Hybrid gas electric drone

I have a nitro engine that’s idling at 1600 RPM. As the title says , I also have a BLDC coupled directly to the nitro engine working as a generator. That generator is capable of producing 3.5kW of ...
0
votes
0answers
19 views

Design of synchronous generator with traezoidal back emf

I want to design an ac synchronous generator that has trapezoidal back emf. However, the synchronous generator has to be wound-field, i.e. no permanent magnets for field excitation. Is it possible to ...
0
votes
1answer
63 views

Given The Same Load, Will A Larger Inverter Generator Burn More Or Less Fuel?

I'm looking to buy an inverter generator for backup of a few essential devices during power outages. I've already tested for & calculated my required wattage (including starting wattage where ...
0
votes
1answer
25 views

Generator sizing for water pump

I'm trying to size a backup generator for a water pump system. The pump is rated 3HP / 230V / 13.5 A So it seems that I would need a ~ 3KW generator on a steady state. However, I'm aware of the ...
-2
votes
2answers
77 views

How to combine high voltage and high current source? [closed]

Can whimshurst machine (high voltage and low current) and homopolar generator (high current and low voltage) be connected in parallel to draw high watts? Please explain the process & flow of ...
1
vote
1answer
28 views

Generator Output at different frequencies

If a three phase generator is stated as 200kVA, 440V, 60Hz therefore a current output of 262A. If said generator is changed to deliver 50Hz power at 440V, would that reduce the power available? so the ...
2
votes
2answers
234 views

Converting power and speed of a bike axle

We want to convert the speed and power applied on the pedals of a bike to convert it to an digital signal. But we need to apply an variable load to simulate cycling up-/downhill. My initial thought ...
0
votes
1answer
35 views

Calculate properties of electric generator?

I've got a miniature DC generator with 10 coils. If I knew the generated power and the size of the rotor, how would I calculate its RPM? Which other variables would I need? Is there a general formula ...
0
votes
0answers
78 views

What happens when you put two rectifiers in series to get DC from a stepper motor?

For a project a stepper motor is used as a generator because of the decent amount of power at low RPM. Now have found that one rectifier is sufficient when placing the coils in series. First however, ...
0
votes
1answer
37 views

How does conduction angle through a bridge rectifier affects generator performance (vibrations, etc.)?

Consider this scenario: A 3-phase permanent-magnet generator is being driven by a strong force and at varying speeds e.g. 1000-6000 RPM Its output is rectified via a 3-phase bridge rectifier The ...
0
votes
3answers
91 views

What is the noise figure of a signal generator?

I'm wondering what's the noise figure or the overall noise contribution of typical signal generators? For example, if there is a test system with a signal generator that outputs 3 dBm signal (50 ohms),...
0
votes
0answers
41 views

Earthing portable generator directly to earth pin of powerpoint?

I have just bought a generator was wondering is there a reason I cant ground it to the earth pin on a power point in my home? Im thinking a cable with single earth wire and power plug on the end so I ...
1
vote
0answers
26 views

Does transformer line side voltage varies with backup generator on load side running at from 0 to 100%?

We have a transformer of 750 KVA with 5.75% impedance. On the load side we have loads and a back-up emergency generator. This emergency generator is capable of supplying the loads and still export ...
0
votes
0answers
44 views

How do I calculate the Output current of a generator?

I got this axial flux generator form China for a small wind project. How should I calculate the output current (rated current) of this? I basically need this information for sizing the wire. The ...

1
2 3 4 5
13