Control and stabilization of grid-connected converters operating as constant power load in a smart transformer grid scenario
The development of power electronics and control technology provides improved performance of the electrical appliances, making them robust to changes in the supply voltage or frequency. However, power electronic converters behave as constant power loads (CPLs), which have negative impedance characte...
| Main Authors: | , , , |
|---|---|
| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2020
|
| Subjects: | |
| Online Access: | https://eprints.nottingham.ac.uk/64205/ |
| _version_ | 1848800102903185408 |
|---|---|
| author | Zhang, Chi Buticchi, Giampaolo Yang, Jiajun Zou, Zhixiang |
| author_facet | Zhang, Chi Buticchi, Giampaolo Yang, Jiajun Zou, Zhixiang |
| author_sort | Zhang, Chi |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The development of power electronics and control technology provides improved performance of the electrical appliances, making them robust to changes in the supply voltage or frequency. However, power electronic converters behave as constant power loads (CPLs), which have negative impedance characteristics, and this non-linear behavior is challenging the stability of the grid. This paper investigates the input impedance of a three-phase low-voltage grid connected ac-dc converter that operating as a CPL when interfaced to a single DC bus and a changeable load. The possibility of adopting a Smart Transformer (ST), a power electronics converter which feeds a low-voltage grid, for the CPL stabilization is also addressed. To analyze the behavior of CPLs, a strategy of impedance modelling is employed. Gain Margin Phase Margin (GMPM) Criterion is referred to judge the stability of the system and verify the stabilization operation for CPLs. Simulation results are presented to be as a support. |
| first_indexed | 2025-11-14T20:46:14Z |
| format | Conference or Workshop Item |
| id | nottingham-64205 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:46:14Z |
| publishDate | 2020 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-642052020-12-31T05:58:06Z https://eprints.nottingham.ac.uk/64205/ Control and stabilization of grid-connected converters operating as constant power load in a smart transformer grid scenario Zhang, Chi Buticchi, Giampaolo Yang, Jiajun Zou, Zhixiang The development of power electronics and control technology provides improved performance of the electrical appliances, making them robust to changes in the supply voltage or frequency. However, power electronic converters behave as constant power loads (CPLs), which have negative impedance characteristics, and this non-linear behavior is challenging the stability of the grid. This paper investigates the input impedance of a three-phase low-voltage grid connected ac-dc converter that operating as a CPL when interfaced to a single DC bus and a changeable load. The possibility of adopting a Smart Transformer (ST), a power electronics converter which feeds a low-voltage grid, for the CPL stabilization is also addressed. To analyze the behavior of CPLs, a strategy of impedance modelling is employed. Gain Margin Phase Margin (GMPM) Criterion is referred to judge the stability of the system and verify the stabilization operation for CPLs. Simulation results are presented to be as a support. 2020-11-18 Conference or Workshop Item PeerReviewed application/pdf en cc_by https://eprints.nottingham.ac.uk/64205/1/Control%20and%20Stabilization%20of%20Grid-connected%20Converters%20Operating%20as%20Constant%20Power%20Load%20in%20a%20Smart%20Transformer%20Grid%20Scenario.pdf Zhang, Chi, Buticchi, Giampaolo, Yang, Jiajun and Zou, Zhixiang (2020) Control and stabilization of grid-connected converters operating as constant power load in a smart transformer grid scenario. In: 46th Annual Conference of the IEEE Industrial Electronics Society, IECON 2020, 18-21 Oct. 2020, Virtual, Singapore. constant power loads; ac-dc converter; impedance modelling; Smart Transformer; stabilization http://dx.doi.org/10.1109/IECON43393.2020.9254644 10.1109/IECON43393.2020.9254644 10.1109/IECON43393.2020.9254644 10.1109/IECON43393.2020.9254644 |
| spellingShingle | constant power loads; ac-dc converter; impedance modelling; Smart Transformer; stabilization Zhang, Chi Buticchi, Giampaolo Yang, Jiajun Zou, Zhixiang Control and stabilization of grid-connected converters operating as constant power load in a smart transformer grid scenario |
| title | Control and stabilization of grid-connected converters operating as constant power load in a smart transformer grid scenario |
| title_full | Control and stabilization of grid-connected converters operating as constant power load in a smart transformer grid scenario |
| title_fullStr | Control and stabilization of grid-connected converters operating as constant power load in a smart transformer grid scenario |
| title_full_unstemmed | Control and stabilization of grid-connected converters operating as constant power load in a smart transformer grid scenario |
| title_short | Control and stabilization of grid-connected converters operating as constant power load in a smart transformer grid scenario |
| title_sort | control and stabilization of grid-connected converters operating as constant power load in a smart transformer grid scenario |
| topic | constant power loads; ac-dc converter; impedance modelling; Smart Transformer; stabilization |
| url | https://eprints.nottingham.ac.uk/64205/ https://eprints.nottingham.ac.uk/64205/ https://eprints.nottingham.ac.uk/64205/ |