All Questions
18
questions
-1
votes
2
answers
67
views
Can a generator with rated ouput 2.5kW handle 2 PCs rated 600W and 500W connected to two UPS rated 3000VA/1500W and 2000VA/1200W [closed]
I'm having issues with different answers from ChatGPT and Bard. I'm not an expert so I would appreciate an expert opinion.
I have a PC rated 600W connected to a UPS rated 2000VA/1200W with a power ...
- 3
1
vote
4
answers
167
views
Generators given in kVA but loads given in kW
If I have a generator at 13kVA 0.8 PF. It is capable of producing ~10.4kW.
I have a load of 10 kW but at a 0.7 PF and therefore consuming ~14.3 kVA.
What is the relationship here?
I thought this was ...
- 89
2
votes
1
answer
169
views
What is the loading factor of a generator?
Looking at an ENTSOE paper, I have seen this table in which the typical ''loading factors'' of different generation types are listed (see figure below). But, what is this????
I was supposing that it ...
0
votes
1
answer
116
views
Can loads absorb more power than needed/requested?
I was designing the governor of a generator, implementing in Digsilent Powerfactory a 1 bus grid like that in the picture.
The generator delivers 350 MW and the 3 loads withdraw respectively 25 MW, 25 ...
0
votes
0
answers
118
views
Internal EMF of a Synchronous Generator Relationship with Load side line Voltage
Say you have a 6-pole, star-connected, 60 Hz, 25 MVA rated, 600 V synchronous generator. After conducting open and short circuit tests you get the equivalent circuit with Xs = 600/(root(3)*14000) (...
- 39
0
votes
0
answers
79
views
How to make a synchronous generator unstable
I was try to analyse what factors can affect the stability of synchronous generator .
Let's say a synchronous generator working in isolation and some loads are connected to it and we have to make it ...
- 1,184
0
votes
0
answers
89
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 ...
- 1,061
3
votes
0
answers
169
views
Bulk power markets hour ending convention why?
Is there an engineering explanation for the hour ending (HE) convention common to US Independent System Operators (ISO)? For example, hover over any MISO real time market data and they will show the ...
- 131
3
votes
1
answer
2k
views
LTSpice: active load current generator soft saturation
I would like to use a current generator to pull down the voltage to zero (there is a voltage generator with a series resistor). The current generator models the output of a specific circuit, so it is ...
- 33
0
votes
2
answers
5k
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 ...
- 133
0
votes
1
answer
424
views
Variation of generator working frequency with load
I am confused with problem no 68. I have added my attempt. I am getting optionA but the book says it should be optionB. Please guide me where I am doing mistake.
- 545
0
votes
2
answers
5k
views
How to calculate internal generator resistance?
What's the formula for calculating generators internal resistance in a circuit with a load?
I am given the load resistance and the voltage sources voltage. What's next?
simulate this circuit – ...
- 2,432
2
votes
0
answers
525
views
Draw relation of rotation speed and output power of PMAC generator with brake resistor
I would like to draw a graph showing the relationship between rotation speed and power of an ideal Sinus PMAC generator
with a brake resistor R(load) to be defined
controlled via a 4Q Controller ...
- 21
0
votes
2
answers
9k
views
How can I supplement a portable generator during peak load.
I'm contemplating purchasing a 2000W generator, to power some of my tools. One potential issue i that I have a saw that pulls 2500 W at startup and then 1800 w to run. Seems to my that as the ...
- 833
0
votes
3
answers
1k
views
Load sharing using asynchronous motors
I am involved in the design of a system composed of:
multiple asynchronous motors,
each equipped with separate drive,
all acting in parallel on a load,
via a common rack and pinion transmission.
As ...
- 425