Work & Capacitance: Calculating Energy Fluctuations

In summary, the conversation discusses a system that tracks voltage every 10ms and has capacitors on the DC Link with a capacity of 100 F. The voltage can reach up to 300VDC and fluctuates. The energy of the system is calculated using 1/2 CV2 and there is a question about the interpretation of positive and negative values. Additionally, the conversation mentions a new member, AmazingTrans, and a link with an image.
  • #1
AmazingTrans
8
0
Hi there,

I have a system that trace every 10ms the voltage of the dc link and in parallel there are capacitors on the DC Link that is about 100 F. The DC Link Voltage can raise as high as 300VDC and it fluctuates.
(I am just throwing out numbers as I'm just trying to grasp the concepts)

To find the energy of the system I used 1/2 CV2
From the table here that I calculated. Would it be right to say :
Energy At that Instant would be 1/2 CV2
Energy Consumed would be the positive value, and the negative values would mean there is excessive energy is returned back to the dc link?

PKyFe.jpg


Hope someone could clarify this. Thanks!
 
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  • #2
Hi AmazingTrans. I see you are new here. http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif

That is the energy stored in the capacitance, from sample to sample.
 
Last edited by a moderator:
  • #3
Thanks NascentOxy!
 

FAQ: Work & Capacitance: Calculating Energy Fluctuations

What is work in relation to capacitance and energy fluctuations?

Work is defined as the transfer of energy from one object to another. In the context of capacitance and energy fluctuations, work refers to the energy required to charge or discharge a capacitor.

How is work calculated in relation to capacitance and energy fluctuations?

The work done on a capacitor can be calculated by multiplying the capacitance (C) by the change in voltage (ΔV) between the initial and final states. This can be represented by the formula W = ½*C*ΔV².

What is capacitance and how does it relate to energy fluctuations?

Capacitance is a measure of a capacitor's ability to store electrical charge. It is defined as the ratio of the amount of charge (Q) stored on a capacitor to the change in voltage (ΔV) across the capacitor, represented by the formula C = Q/ΔV. In the context of energy fluctuations, capacitance is important because it determines the amount of energy that can be stored in a capacitor.

How do energy fluctuations affect the performance of capacitors?

Energy fluctuations can impact the performance of capacitors in several ways. Fluctuations in voltage can cause a capacitor to charge or discharge, potentially affecting the function of electronic circuits. Additionally, fluctuations in temperature can affect the dielectric material of a capacitor, leading to changes in capacitance and potentially affecting its overall performance.

What other factors should be taken into account when calculating energy fluctuations in relation to capacitance?

In addition to capacitance and voltage, factors such as the dielectric material, temperature, and size of the capacitor should also be considered when calculating energy fluctuations. These factors can affect the overall performance and reliability of capacitors in electronic systems.

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