Direct Power Control Strategy of PWM Rectifier Based on Improved Virtual Flux-Linkage Observer
In order to achieve the low cost and high performance control of three-phase PWM rectifier, a direct power control (DPC) strategy based on a new-style virtual flux-linkage observer is proposed. The model of three-phase PWM rectifier and the principle of virtual flux-linkage vector control are introd...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-01-01
|
| Series: | Journal of Control Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/9376735 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832545603320545280 |
|---|---|
| author | Wenshao BU Leilei Xu |
| author_facet | Wenshao BU Leilei Xu |
| author_sort | Wenshao BU |
| collection | DOAJ |
| description | In order to achieve the low cost and high performance control of three-phase PWM rectifier, a direct power control (DPC) strategy based on a new-style virtual flux-linkage observer is proposed. The model of three-phase PWM rectifier and the principle of virtual flux-linkage vector control are introduced firstly. Then, in order to avoid the effect of integral initial value and cumulative deviation, three first-order low-pass filters are cascaded to replace the pure integral link; an improved virtual flux-linkage observer of three-phase power grid is presented. From the observed virtual flux-linkage, the voltage and instantaneous power of three-phase power grid are online estimated. On this basis, the power grid voltage sensorless direct power control system of three-phase PWM rectifier is designed. Simulation results have shown that, both in the rectifying state and in the inverting state, the power grid side current and the DC side voltage of three-phase PWM rectifier all can be effectively controlled; the high power factor operation of three-phase PWM rectifier is realized. |
| format | Article |
| id | doaj-art-c6c8437cff2d448fb291a32b10cc94b8 |
| institution | Kabale University |
| issn | 1687-5249 1687-5257 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Control Science and Engineering |
| spelling | doaj-art-c6c8437cff2d448fb291a32b10cc94b82025-02-03T07:25:20ZengWileyJournal of Control Science and Engineering1687-52491687-52572017-01-01201710.1155/2017/93767359376735Direct Power Control Strategy of PWM Rectifier Based on Improved Virtual Flux-Linkage ObserverWenshao BU0Leilei Xu1Electrical Engineering College, Henan University of Science and Technology, Luoyang 471023, ChinaElectrical Engineering College, Henan University of Science and Technology, Luoyang 471023, ChinaIn order to achieve the low cost and high performance control of three-phase PWM rectifier, a direct power control (DPC) strategy based on a new-style virtual flux-linkage observer is proposed. The model of three-phase PWM rectifier and the principle of virtual flux-linkage vector control are introduced firstly. Then, in order to avoid the effect of integral initial value and cumulative deviation, three first-order low-pass filters are cascaded to replace the pure integral link; an improved virtual flux-linkage observer of three-phase power grid is presented. From the observed virtual flux-linkage, the voltage and instantaneous power of three-phase power grid are online estimated. On this basis, the power grid voltage sensorless direct power control system of three-phase PWM rectifier is designed. Simulation results have shown that, both in the rectifying state and in the inverting state, the power grid side current and the DC side voltage of three-phase PWM rectifier all can be effectively controlled; the high power factor operation of three-phase PWM rectifier is realized.http://dx.doi.org/10.1155/2017/9376735 |
| spellingShingle | Wenshao BU Leilei Xu Direct Power Control Strategy of PWM Rectifier Based on Improved Virtual Flux-Linkage Observer Journal of Control Science and Engineering |
| title | Direct Power Control Strategy of PWM Rectifier Based on Improved Virtual Flux-Linkage Observer |
| title_full | Direct Power Control Strategy of PWM Rectifier Based on Improved Virtual Flux-Linkage Observer |
| title_fullStr | Direct Power Control Strategy of PWM Rectifier Based on Improved Virtual Flux-Linkage Observer |
| title_full_unstemmed | Direct Power Control Strategy of PWM Rectifier Based on Improved Virtual Flux-Linkage Observer |
| title_short | Direct Power Control Strategy of PWM Rectifier Based on Improved Virtual Flux-Linkage Observer |
| title_sort | direct power control strategy of pwm rectifier based on improved virtual flux linkage observer |
| url | http://dx.doi.org/10.1155/2017/9376735 |
| work_keys_str_mv | AT wenshaobu directpowercontrolstrategyofpwmrectifierbasedonimprovedvirtualfluxlinkageobserver AT leileixu directpowercontrolstrategyofpwmrectifierbasedonimprovedvirtualfluxlinkageobserver |