Research on Circulating Current Suppression Control of Parallel Inverters
Circulating current suppression can effectively improve the reliability and redundancy of parallel inverter systems. The mechanism and influencing factors of the low- and high-frequency zero-sequence circulating current (ZSCC) are analyzed in this study. Based on a mechanism analysis and the built m...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-12-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/17/24/6253 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846104847997206528 |
|---|---|
| author | Yibiao Fan Lixia Tong Xiaoping Wang Xiaowei Cai Zhihe Fu Junhui Zhou Shuangmao Huang Xingkui Mao |
| author_facet | Yibiao Fan Lixia Tong Xiaoping Wang Xiaowei Cai Zhihe Fu Junhui Zhou Shuangmao Huang Xingkui Mao |
| author_sort | Yibiao Fan |
| collection | DOAJ |
| description | Circulating current suppression can effectively improve the reliability and redundancy of parallel inverter systems. The mechanism and influencing factors of the low- and high-frequency zero-sequence circulating current (ZSCC) are analyzed in this study. Based on a mechanism analysis and the built mathematical model, the composite control strategy of zero-sequence voltage difference (ZSVD) compensation and virtual inductance is proposed to suppress the low- and high-frequency ZSCC. In the composite control strategy, the low-frequency ZCSS (LF-ZCSS) is suppressed by the ZSVD compensation method, and the HF-ZCSS is suppressed by the virtual inductance method. The ZSVD compensation is incorporated into the SVPWM as an input to regulate the modulation and suppress the LF-ZCSS, and virtual inductance is introduced into the current control loop to suppress the HF-ZCSS. A parallel system prototype composed of two 6 kW inverters is constructed. The experiments show that the ZSCC of the parallel system is reduced by 45%, which verifies the effectiveness of the proposed composite control strategy. |
| format | Article |
| id | doaj-art-55c1fa37b57749d6a95797c61fd4cbc3 |
| institution | Kabale University |
| issn | 1996-1073 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-55c1fa37b57749d6a95797c61fd4cbc32024-12-27T14:23:15ZengMDPI AGEnergies1996-10732024-12-011724625310.3390/en17246253Research on Circulating Current Suppression Control of Parallel InvertersYibiao Fan0Lixia Tong1Xiaoping Wang2Xiaowei Cai3Zhihe Fu4Junhui Zhou5Shuangmao Huang6Xingkui Mao7Physics, Mechanical and Electrical Engineering, Longyan University, Longyan 364012, ChinaInstitute for Testing of Industrial Products of Jiangxi General Institute of Testing and Certification, Nanchang 330052, ChinaCollege of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350011, ChinaPhysics, Mechanical and Electrical Engineering, Longyan University, Longyan 364012, ChinaPhysics, Mechanical and Electrical Engineering, Longyan University, Longyan 364012, ChinaCollege of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350011, ChinaTongce Technology Co., Ltd., Xiamen 364000, ChinaCollege of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350011, ChinaCirculating current suppression can effectively improve the reliability and redundancy of parallel inverter systems. The mechanism and influencing factors of the low- and high-frequency zero-sequence circulating current (ZSCC) are analyzed in this study. Based on a mechanism analysis and the built mathematical model, the composite control strategy of zero-sequence voltage difference (ZSVD) compensation and virtual inductance is proposed to suppress the low- and high-frequency ZSCC. In the composite control strategy, the low-frequency ZCSS (LF-ZCSS) is suppressed by the ZSVD compensation method, and the HF-ZCSS is suppressed by the virtual inductance method. The ZSVD compensation is incorporated into the SVPWM as an input to regulate the modulation and suppress the LF-ZCSS, and virtual inductance is introduced into the current control loop to suppress the HF-ZCSS. A parallel system prototype composed of two 6 kW inverters is constructed. The experiments show that the ZSCC of the parallel system is reduced by 45%, which verifies the effectiveness of the proposed composite control strategy.https://www.mdpi.com/1996-1073/17/24/6253zero-sequence circulating currentvirtual inductancezero-sequence voltage difference |
| spellingShingle | Yibiao Fan Lixia Tong Xiaoping Wang Xiaowei Cai Zhihe Fu Junhui Zhou Shuangmao Huang Xingkui Mao Research on Circulating Current Suppression Control of Parallel Inverters Energies zero-sequence circulating current virtual inductance zero-sequence voltage difference |
| title | Research on Circulating Current Suppression Control of Parallel Inverters |
| title_full | Research on Circulating Current Suppression Control of Parallel Inverters |
| title_fullStr | Research on Circulating Current Suppression Control of Parallel Inverters |
| title_full_unstemmed | Research on Circulating Current Suppression Control of Parallel Inverters |
| title_short | Research on Circulating Current Suppression Control of Parallel Inverters |
| title_sort | research on circulating current suppression control of parallel inverters |
| topic | zero-sequence circulating current virtual inductance zero-sequence voltage difference |
| url | https://www.mdpi.com/1996-1073/17/24/6253 |
| work_keys_str_mv | AT yibiaofan researchoncirculatingcurrentsuppressioncontrolofparallelinverters AT lixiatong researchoncirculatingcurrentsuppressioncontrolofparallelinverters AT xiaopingwang researchoncirculatingcurrentsuppressioncontrolofparallelinverters AT xiaoweicai researchoncirculatingcurrentsuppressioncontrolofparallelinverters AT zhihefu researchoncirculatingcurrentsuppressioncontrolofparallelinverters AT junhuizhou researchoncirculatingcurrentsuppressioncontrolofparallelinverters AT shuangmaohuang researchoncirculatingcurrentsuppressioncontrolofparallelinverters AT xingkuimao researchoncirculatingcurrentsuppressioncontrolofparallelinverters |