| Title |
Matricinės pavaros, veikiančios įtampos trikdžių kompensavimo režime, tyrimas / |
| Translation of Title |
Research of matrix drive operating in voltage sags compensation mode. |
| Authors |
Čeponis, Vilius |
| Full Text |
|
| Pages |
49 |
| Keywords [eng] |
frequency ; matrix ; converter ; voltage ; sags |
| Abstract [eng] |
Matrix frequency converter is a new type of frequency converters that does not have reactive elements which traditional converters have in a DC stage. Matrix converter is made with 9 bipolar electronical switches that lets connect any input phase with any output phase. This is one of the main advantage of these converters but lack of reactive elements means that any disturbance in input voltage is directly seen in output voltage. According to statistics from literature, four main types of voltage sags of input voltage are set. In this work modification of matrix converter algorithm is proposed. Algorithm is modified by shifting sector of voltage vector and spreading sector that lets using of least disturbed voltage phases. Modified algorithm is tested by MATLAB Simulnk model that consists of power, control and motor models. Modeling shows that algorithm modification has positive influence for effective voltage value and total harmonics distortion when sag is in one phase. Algorithm modification has negative influence for effective voltage value and total harmonics distortion when sag is in two or three phases. Adequacy of model is tested by physical model of matrix converter. By measuring total harmonics distortion and effective voltage value I got that model is adequate. |
| Dissertation Institution |
Kauno technologijos universitetas. |
| Type |
Master thesis |
| Language |
Lithuanian |
| Publication date |
2017 |
