Projects - User contributions [en]

Projects:2018s2-293 Detailed Analysis of Ferromagnetism in the Periodic Domain

2019-03-18T05:57:58Z

A1683426:

'''Abstract'''

In electrical engineering, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. For a low-frequency choke, these parameters are the series resistance, R, and the series inductance, L. The resistance is normally considered to represent the linear part of the relationship between the measured voltage and the measured current, v(t) = R * i(t). The inductance is normally considered to represent the linear relationship between the measured voltage and the time-derivative of the measured current v(t) = L * (d.i(t)/d.t).

'''Introduction'''

In this project, the properties of practical inductors, known as “chokes”, will be carefully investigated. Ideally, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. However, according to the Investigations from the previous project group, it has been found that the inductance, L, varies greatly with the operating condition of the choke. This apples even in the situations where saturation is not an issue.

'''Project Team'''

Project Students
* Lei Yi
* Jinhua Wang
* Zhengqian Lu

Supervisor
* Andrew Allison

'''Objectives'''

* To prove (or dis-prove) the hypothesis that R and L vary with operating condition.

* To separate out the various parts of the resistive loss, into copper loss, hysteresis loss and eddy-current loss.

* To enable students to get familiar with data capture and analysis, phasor analysis, Complex Fourier analysis and the statistical treatment of errors.

* To devise scaling laws, through which measurements, using small voltages and currents, could be scaled to obtain corrected estimates of parameters for the same devices under rated conditions.

Projects:2018s2-293 Detailed Analysis of Ferromagnetism in the Periodic Domain

2019-03-18T05:57:24Z

A1683426:

'''Abstract'''

In electrical engineering, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. For a low-frequency choke, these parameters are the series resistance, R, and the series inductance, L. The resistance is normally considered to represent the linear part of the relationship between the measured voltage and the measured current, v(t) = R * i(t). The inductance is normally considered to represent the linear relationship between the measured voltage and the time-derivative of the measured current v(t) = L * (d.i(t)/d.t).

'''Introduction'''

In this project, the properties of practical inductors, known as “chokes”, will be carefully investigated. Ideally, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. However, according to the Investigations from the previous project group, it has been found that the inductance, L, varies greatly with the operating condition of the choke. This apples even in the situations where saturation is not an issue.

'''Project Team'''

Project Students
* Lei Yi
* Jinhua Wang
* Zhengqian Lu

Supervisor
* Andrew Allison

'''Objectives'''

* To prove (or dis-prove) the hypothesis that R and L vary with operating condition.

* To separate out the various parts of the resistive loss, into copper loss, hysteresis loss and eddy-current loss.

* To devise scaling laws, through which measurements, using small voltages and currents, could be scaled to obtain corrected estimates of parameters for the same devices under rated conditions.

* To enable students to get familiar with data capture and analysis, phasor analysis, Complex Fourier analysis and the statistical treatment of errors.

Projects:2018s2-293 Detailed Analysis of Ferromagnetism in the Periodic Domain

2019-03-18T05:48:15Z

A1683426:

'''Abstract'''

In electrical engineering, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. For a low-frequency choke, these parameters are the series resistance, R, and the series inductance, L. The resistance is normally considered to represent the linear part of the relationship between the measured voltage and the measured current, v(t) = R * i(t). The inductance is normally considered to represent the linear relationship between the measured voltage and the time-derivative of the measured current v(t) = L * (d.i(t)/d.t).

'''Introduction'''

In this project, the properties of practical inductors, known as “chokes”, will be carefully investigated. Ideally, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. However, according to the Investigations from the previous project group, it has been found that the inductance, L, varies greatly with the operating condition of the choke. This apples even in the situations where saturation is not an issue.

'''Project Team'''

Project Students
* Lei Yi
* Jinhua Wang
* Zhengqian Lu

Supervisor
* Andrew Allison

'''Objectives'''

The purpose of this project is to prove (or dis-prove) the hypothesis that R and L vary with operating condition. We also plan to separate out the various parts of the resistive loss, into copper loss, hysteresis loss and eddy-current loss.

A stretch goal of the project would to devise scaling laws, through which measurements, using small voltages and currents, could be scaled to obtain corrected estimates of parameters for the same devices under rated conditions. Impact: The variation of R and L has significant implications for any machine that has ferromagnetic parts. This includes, chokes, transformers, electric motors and switched-mode inverters.

Projects:2018s2-293 Detailed Analysis of Ferromagnetism in the Periodic Domain

2019-03-18T05:38:54Z

A1683426:

'''Abstract'''

In electrical engineering, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. For a low-frequency choke, these parameters are the series resistance, R, and the series inductance, L. The resistance is normally considered to represent the linear part of the relationship between the measured voltage and the measured current, v(t) = R * i(t). The inductance is normally considered to represent the linear relationship between the measured voltage and the time-derivative of the measured current v(t) = L * (d.i(t)/d.t).

'''Introduction'''

In this project, the properties of practical inductors, known as “chokes”, will be carefully investigated. Ideally, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. However, according to the Investigations from the previous project group, it has been found that the inductance, L, varies greatly with the operating condition of the choke. This apples even in the situations where saturation is not an issue.

'''Project Team'''

Project Students
* Lei Yi
* Jinhua Wang
* Zhengqian Lu

Supervisor
* Andrew Allison

'''Objectives'''

The purpose of this project is to prove (or dis-prove) the hypothesis that R and L vary with operating condition. We also plan to separate out the various parts of the resistive loss, into copper loss, hysteresis loss and eddy-current loss.

A stretch goal of the project would to devise scaling laws, through which measurements, using small voltages and currents, could be scaled to obtain corrected estimates of parameters for the same devices under rated conditions. Impact: The variation of R and L has significant implications for any machine that has ferromagnetic parts. This includes, chokes, transformers, electric motors and switched-mode inverters.

Transferrable skills: Students will investigate a number of phenomena and techniques, which are quite general and
transferrable: loss-mechanisms (copper losses, eddy-current losses, hysteresis losses) physics of ferromagnetism, data capture and analysis, phasor analysis, complex Fourier analysis, representation of devices using integral equations, the method of least squares, and the statistical treatment of errors.

Projects:2018s2-293 Detailed Analysis of Ferromagnetism in the Periodic Domain

2019-03-18T05:38:26Z

A1683426:

'''Abstract'''

In electrical engineering, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. For a low-frequency choke, these parameters are the series resistance, R, and the series inductance, L. The resistance is normally considered to represent the linear part of the relationship between the measured voltage and the measured current, v(t) = R * i(t). The inductance is normally considered to represent the linear relationship between the measured voltage and the time-derivative of the measured current v(t) = L * (d.i(t)/d.t).

'''Introduction'''

In this project, the properties of practical inductors, known as “chokes”, will be carefully investigated. Ideally, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. However, according to the Investigations from the previous project group, it has been found that the inductance, L, varies greatly with the operating condition of the choke. This apples even in the situations where saturation is not an issue.

'''Project Team'''

Project Students
* Lei Yi
* Jinhua Wang
* Zhengqian Lu

Supervisor
* Andrew Allison

'''Objectives'''
The purpose of this project is to prove (or dis-prove) the hypothesis that R and L vary with operating condition. We also plan to separate out the various parts of the resistive loss, into copper loss, hysteresis loss and eddy-current loss. A stretch goal of the project would to devise scaling laws, through which measurements, using small voltages and currents, could be scaled to obtain corrected estimates of parameters for the same devices under rated conditions. Impact: The variation of R and L has significant implications for any machine that has ferromagnetic parts. This includes, chokes, transformers, electric motors and switched-mode inverters.
Transferrable skills: Students will investigate a number of phenomena and techniques, which are quite general and
transferrable: loss-mechanisms (copper losses, eddy-current losses, hysteresis losses) physics of ferromagnetism, data capture and analysis, phasor analysis, complex Fourier analysis, representation of devices using integral equations, the method of least squares, and the statistical treatment of errors.

Projects:2018s2-293 Detailed Analysis of Ferromagnetism in the Periodic Domain

2019-03-18T05:09:18Z

A1683426:

Projects:2018s2-293 Detailed Analysis of Ferromagnetism in the Periodic Domain

2019-03-18T05:08:49Z

A1683426:

Projects:2018s2-293 Detailed Analysis of Ferromagnetism in the Periodic Domain

2019-03-18T04:59:04Z

A1683426:

'''Abstract'''

For a low-frequency choke, these parameters are the series resistance, R, and the series inductance, L. The resistance is normally considered to represent the linear part of the relationship between the measured voltage and the measured current, v(t) = R * i(t). The inductance is normally considered to represent the linear relationship between the measured voltage and the time-derivative of the measured current v(t) = L * (d.i(t)/d.t).

'''Introduction'''

In this project, the properties of practical inductors, known as “chokes”, will be carefully investigated. In electrical engineering, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. According to the Investigations from the previous project group, it has been found that the inductance L, varies greatly with the operating condition of the choke. This apples even in the situations where saturation is not an issue.

'''Project Team'''
Project Students
* Lei Yi
* Jinhua Wang
* Zhengqian Lu

Supervisor
* Andrew Allison

'''Objectives'''

Projects:2018s2-293 Detailed Analysis of Ferromagnetism in the Periodic Domain

2019-03-18T04:47:58Z

A1683426:

'''Abstract'''

In this project, the properties of practical inductors, known as “chokes”, will be carefully investigated. In electrical engineering, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. According to the Investigations from the previous project group, it has been found that the inductance L, varies greatly with the operating condition of the choke. This apples even in the situations where saturation is not an issue.

Projects:2018s2-293 Detailed Analysis of Ferromagnetism in the Periodic Domain

2019-03-18T04:47:40Z

A1683426: Created page with "'''Abstract''' In this project,the properties of practical inductors, known as “chokes”, will be carefully investigated. In electrical engineering, we habitually apply li..."

'''Abstract'''

In this project,the properties of practical inductors, known as “chokes”, will be carefully investigated. In electrical engineering, we habitually apply linear models with constant parameters to devices that we plan to design and optimise. According to the Investigations from the previous project group, it has been found that the inductance L, varies greatly with the operating condition of the choke. This apples even in the situations where saturation is not an issue.