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Questions tagged [power-generation]

Refer to either Bulk Power Generation (i.e., large thermal power plants), Distributed Energy Resources (i.e., small-scale wind and solar generation), Renewable Energy Generation (i.e., larger-scale wind and solar generation).

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0answers
34 views

Powering refrigerator using solar inverter

I have got a 3 kVA (2400 watt) solar hybrid inverter (pure sine wave) which is connected to a 1280 watt PV array and 2 x 12 volt 150 Ah batteries. It is supposed to switch to utility mode if the ...
9
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6answers
3k views

Why don't we think about battery storage for all sources of electricity on a utility scale instead of just renewables? [duplicate]

One of the repeating solutions that comes up when talking about renewable energy power generation and the intermittency of it is battery power storage. This has got me thinking, it takes hours or ...
2
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1answer
112 views

How fast do power plants need to respond to demand?

I've heard the layman's description of electrical grid response time before - it usually contains the word "instant" or "real-time". But I'm interested in the actual response times of the various ...
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2answers
42 views

Hand-cranked vs hydro-turbine generator for single potential energy (no continuos flow)

Let's say you have a certain amount of water at a height; think a bucket with 3 liters of water in it on a 4 meters tall wall. By letting this water to fall, we'd have an opportunity to convert some ...
32
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3answers
5k views

Why does power dip during a lightning storm?

If lightning were to strike power lines, wouldn't you expect it to increase the power, and hence your room lights get brighter? Why do they go dim for 1 second at a time?
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1answer
108 views

Why does a turbine with PMSG and full converter system draws reactive power when turbine is stopped or there is no wind?

Our turbine has a permanent magnet synchronous generator and full converter system (rectifier diods for rectification and IGBTs for chopping dc link voltage and as inverters) which means its generator ...
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2answers
145 views

Producing energy from lighting bolts

An average bolt of negative lightning carries a current of 30 to 50 kiloamperes, transfers a charge of 5 coulombs, and dissipates 500 megajoules of energy (120 kg TNT equivalent, or enough to light a ...
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2answers
69 views

Electric generator

Is there a way to power a single light bulb using a generator, and then with the same power source light 10 light bulbs? So basically, can I use say 5V of input to light 10 bulbs, and then use the ...
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1answer
111 views

How did early coal power plants generate DC?

It seems that the early coal power plants used a similar method that is used in modern times, with magnets and wire coils. This method generates AC, but the early power plants used DC, so how did they ...
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5answers
4k views

How much electricity does a 1 GW plant actually produce if the plant's efficiency is 20%?

I'm trying to see what percentage of total electricity demand will be met by solar power in some year x. Let's say I have data saying that the total electricity demand in country A is 1000 billion ...
0
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3answers
155 views

It is feasible to use DC rather than AC in transmission lines? [duplicate]

I have read that in Mexico there is a project to build a network of distribution lines (over 1000 km), generators and substations using direct current rather than alternating current. These are rated ...
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2answers
313 views

Dc dynamo / generator to dc motor

Can a dc generator / dynamo be used as a dc motor? If so is this realistic without causing meltdown?
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2answers
71 views

What is the unit of measure for a region's power supply?

So, I'm casually perusing an old issue of Foreign Affairs magazine and encounter a paragraph concerning the ability of Brazil's electrical power generating plants to supply juice. Said paragraph ...
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2answers
2k views

AC brushless motor as generator

How can i use an AC brushless motor to charge a battery? If I need to do it with a rectifier then what kind of rectifier should I use?? My motor is 1250kv and another one is 500kv. Can I use an Esc ...
5
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2answers
553 views

Joining two AC inputs with different voltages

I have a project where we have to design a wind turbine. I currently have two 5 kW generators (https://wxftgs.en.alibaba.com/product/60689557542-804881319/5kw_permanent_magnet_generator_price....
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0answers
76 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). ...
0
votes
1answer
131 views

3-Phase Theory vs Practical example confusion

In theoretical examples, 3-phase circuits are shown as either Wye or Delta type. Wye obviously containing a neutral line. Recently I watched a Youtube video where the uploader re-purposed an old ...
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2answers
957 views

Thermocouple power/current production efficiency

I know that thermocouples produce electric current when there is a temperature difference between their two ends. This current is directly proportional to the temperature difference. I also understand ...
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2answers
2k views

Calculating max power of bicycle dynamo

So I have some old dynamo, and I want it to power my GPS navigator. But first of all I want to calculate its maximum power it can deliver. Setup: two wires are soldered to dynamo on one end, on ...
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2answers
156 views

How is electricity from a power station added to the grid?

If I construct my own solar powerplant to add my output to the power grid how is it done technically ? What are all the steps I need to go through ? (Not regulatory procedures.. But would still be ...
0
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1answer
1k views

CUF v/s PLF of power plants

What is the difference between capacity use factor (CUF) of solar power plant and plant load factor (PLF) of coal based power plant? Can we compare both since they seem analogous?
1
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1answer
4k views

How does the speed of a synchronous generator changes with load?

When the generator is rotating at rated speed and let us say that the load decreases then the mechanical torque will be more than​ the electrical torque which will lead to increase in the speed of ...
0
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1answer
107 views

Gas/Steam turbine for power generation

I have a question regarding the electricity generation using either steam or gas turbine. After the process of gas or steam accrues and the turbine rotates. the turbine which is connected to the ...
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1answer
117 views

magnets pancake copper coil

I am winding 6 gage copper wire into a flat pancake-shaped coil. If magnets are placed under the coil, across the diameter of the coil, and all of the magnets point their north poles upwards, will ...
3
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4answers
236 views

On what condition does Harmonic components of power generated in 50/60 Hz Grid Generators depend on?

I have power-recording data from 11 countries (USA-60Hz mains frequency / other nation 50Hz). These data were collected using a audio recorder (in a computer) connected directly to the power mains via ...
0
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1answer
3k views

How to wire a three phase bridge rectifier

I am doing a DIY three phase AC motor power generation project. I can understand the basics of electronics, and also understand how the wires are wired in a single phase rectifier. However, for three ...
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1answer
590 views

Generating Electricity Using a Steam Turbine and Small Motor

I have started a project where I intend to use a Small steam turbine to power small devices in the wilderness. the goal of producing usb standard 5 V and 2 A to 4 A current. Here is the turbine: ...
0
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1answer
60 views

Heat generation rate to temperature

I have heatgeneration rate in W/m3 and I wanted to know how much temperature it can generate. The heatgeneration element is Platinum resistor for MEMS project. I want to know numerical relation? ...
2
votes
3answers
385 views

Is more fuel consumed immediately when spinning reserve is brought on-line?

Spinning reserve is additional capacity (reserve) that generators which are on-line (spinning) are able to apply to the grid quickly in response to a failure elsewhere on the grid, or a spike in ...
0
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4answers
2k views

How do power companies regulate power plant's voltage output?

Whether it be a thermal power station or nuclear power station or a hydroelectric damn its impossible to keep all the dynamos running at a fixed speed. As such how do power companies regulate the ...
0
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1answer
91 views

Paint Can Power Plant {gasification stove, steam turbine, dynamo, batteries} [closed]

thanks for stopping, here's a little update, this is not going to happen the way I'd hoped so I'm going to change my tack a little, it was suggested that I pick up an alternator so I'll do that and ...
1
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0answers
822 views

how can synchronize two single phase generators?

I need to a continues power supply for 3 day without interrupt. I use from 2 single phase generators that a generator work for 10 hour and next another startup. for uninterrupted power supply we need ...
0
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1answer
55 views

Generator requirement tool accuracy [closed]

I am building the below web application to publish for free in order to help people individuals calculate what size generator they might need in order for their specific needs. My question is whether ...
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1answer
1k views

Battery Charger From DC Motor

So long story short I'm attempting to build a charger for batteries using a DC motor. The batteries I'm planning on charging are old smartphone batteries at 3.7V and 1000mAh. The DC motor that I am ...
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2answers
133 views

Electricity transfer basics [closed]

First off, I'm sorry if this is something that's been covered before. I tried scrubbing the internet but can't quite find an answer to my questions. I have o my a very remedial amount of electric ...
0
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3answers
615 views

What do I need in order to make my arduino to transmit / recieve signals exactly at 433.68 MHZ?

Before I start, please note I am not even near to be an expert in electronics - I just try to do my best with what I have - I apologize in advance if my language is not technical enough. I have a ...
0
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1answer
76 views

Simple and easy-to-charge battery for a DIY power generation project with varying voltages and currents?

I'm converting a decorative windmill to a power generation device. I'm looking for a battery that can charge with wildly different voltages and currents and be simple and easy to charge. It doesn't ...
0
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1answer
239 views

ACB vs Contactor for synchronous generators

I've been told by an experienced electrical engineering colleague that it is preferred to use an ACB rather than a contactor for making and breaking the connection to a synchronous generator, but he ...
3
votes
4answers
1k views

Synchronizing a diesel generator with a pure sine wave inverter

As the title reads, I'm trying to understand the best (Practical) way to synchronize a diesel generator with a pure sine wave inverter, in order to implement an automatic synchronizer based on ...
0
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1answer
6k views

How to calculate power of a generator

I have been searching online on how to calculate power of a generator based on the rpm, but I cannot find anything. Is there a equation that relates rpm and power generated by a induction generator? ...
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votes
1answer
83 views

No power is generating [closed]

I am trying to generate an small dc power using an old transformers and small magnets. For test, I stick a few mobile speaker's (Nokia 6300) magnets in dc motor and spin as much as possible near of ...
0
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2answers
455 views

5v hydro power generator produces almost 12v

I have this hydropower generator. At its specs it says that it would produce a 5v voltage. So when I have installed this to my water system, and measure it using a tester it says that it produces ...
3
votes
1answer
1k views

Will this computer case fan power a lightbulb?

I'm attempting to help my daughter build a wind generation model for her science fair. I've found some prebuilt kits but the shipping is more than the product. Doing some research it seems she can ...
0
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3answers
1k views

What can I replace copper with?

I and my friends were trying to make a salt water battery but we cannot find copper strips in our town so is there any other electrode that I can use to make our battery. We have aluminum foil (which ...
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1answer
223 views

How to handle excess MW of a generation plant, required to deliver constant 100MW, when its 100MW load decreased to 50MW

What is the best method to handle the excess load of coal generation plant, required to deliver its full capacity to a portion of a distribution utility's load, when almost 50% of the said is out? The ...
4
votes
2answers
166 views

Self Contained Temperature Display in Very High Temp Environment

I want to build a temperature sensor + display that will operate in a high temperature environment (routinely 120C, but periodically spiking to 175C, and might be exposed to 350C where it would be ...
0
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2answers
517 views

Homemade dynamo and alternator

I'm a curious person that knows only basic physics, and I want to craft a homemade power generator (eolic, magnetic or hydroelectric, the origin of the energy doesn't matter yet). I would like to ...