Second-Order Harmonic Current Propagation Characteristics in Two-Stage Inverter Based on Virtual Impedance
The instantaneous output power of a two-stage single-phase inverter pulsates at twice the output voltage frequency, generating second harmonic current(SHC) in the front-end dc-dc converter. The optimization of loop control of the front-end dc-dc converter is an effective and costless method for this...
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| Format: | Article |
| Language: | English |
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Editorial Department of Journal of Nantong University (Natural Science Edition)
2021-03-01
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| Series: | Nantong Daxue xuebao. Ziran kexue ban |
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| Online Access: | https://ngzke.cbpt.cnki.net/portal/journal/portal/client/paper/61a32c0e30685e6eb31ab41402309d26 |
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| _version_ | 1849222187044569088 |
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| author | REN Lei; GONG Chunying |
| author_facet | REN Lei; GONG Chunying |
| author_sort | REN Lei; GONG Chunying |
| collection | DOAJ |
| description | The instantaneous output power of a two-stage single-phase inverter pulsates at twice the output voltage frequency, generating second harmonic current(SHC) in the front-end dc-dc converter. The optimization of loop control of the front-end dc-dc converter is an effective and costless method for this problem. This study gives equivalent circuit model of the front-end dc-dc converter with single voltage loop control and voltage current dual-loop control first. Then, the propagation characteristic of the SHC is analyzed from the point of virtual impedance. On this basis,this study proposes a synthesis of different control strategies for SHC reduction and points out the limitations of them.In the view of this, this paper presents corresponding optimization methods. Finally, a 1 500-VA prototype model is built and simulated, and the simulation results are presented to verify the effectiveness of the analysis and the optimization. |
| format | Article |
| id | doaj-art-6ffa929014eb4da9a724678d3b8bd2b4 |
| institution | Kabale University |
| issn | 1673-2340 |
| language | English |
| publishDate | 2021-03-01 |
| publisher | Editorial Department of Journal of Nantong University (Natural Science Edition) |
| record_format | Article |
| series | Nantong Daxue xuebao. Ziran kexue ban |
| spelling | doaj-art-6ffa929014eb4da9a724678d3b8bd2b42025-08-26T07:03:02ZengEditorial Department of Journal of Nantong University (Natural Science Edition)Nantong Daxue xuebao. Ziran kexue ban1673-23402021-03-012001556410.12194/j.ntu.20200221001Second-Order Harmonic Current Propagation Characteristics in Two-Stage Inverter Based on Virtual ImpedanceREN Lei; GONG Chunying0School of Electrical Engineering, Nantong University;School of Automation, Nanjing University of Aeronautics and AstronauticsThe instantaneous output power of a two-stage single-phase inverter pulsates at twice the output voltage frequency, generating second harmonic current(SHC) in the front-end dc-dc converter. The optimization of loop control of the front-end dc-dc converter is an effective and costless method for this problem. This study gives equivalent circuit model of the front-end dc-dc converter with single voltage loop control and voltage current dual-loop control first. Then, the propagation characteristic of the SHC is analyzed from the point of virtual impedance. On this basis,this study proposes a synthesis of different control strategies for SHC reduction and points out the limitations of them.In the view of this, this paper presents corresponding optimization methods. Finally, a 1 500-VA prototype model is built and simulated, and the simulation results are presented to verify the effectiveness of the analysis and the optimization.https://ngzke.cbpt.cnki.net/portal/journal/portal/client/paper/61a32c0e30685e6eb31ab41402309d26two-stage single-phase invertersecond harmonic current(shc)virtual impedanceequivalent circuit modelpropagation characteristic |
| spellingShingle | REN Lei; GONG Chunying Second-Order Harmonic Current Propagation Characteristics in Two-Stage Inverter Based on Virtual Impedance Nantong Daxue xuebao. Ziran kexue ban two-stage single-phase inverter second harmonic current(shc) virtual impedance equivalent circuit model propagation characteristic |
| title | Second-Order Harmonic Current Propagation Characteristics in Two-Stage Inverter Based on Virtual Impedance |
| title_full | Second-Order Harmonic Current Propagation Characteristics in Two-Stage Inverter Based on Virtual Impedance |
| title_fullStr | Second-Order Harmonic Current Propagation Characteristics in Two-Stage Inverter Based on Virtual Impedance |
| title_full_unstemmed | Second-Order Harmonic Current Propagation Characteristics in Two-Stage Inverter Based on Virtual Impedance |
| title_short | Second-Order Harmonic Current Propagation Characteristics in Two-Stage Inverter Based on Virtual Impedance |
| title_sort | second order harmonic current propagation characteristics in two stage inverter based on virtual impedance |
| topic | two-stage single-phase inverter second harmonic current(shc) virtual impedance equivalent circuit model propagation characteristic |
| url | https://ngzke.cbpt.cnki.net/portal/journal/portal/client/paper/61a32c0e30685e6eb31ab41402309d26 |
| work_keys_str_mv | AT renleigongchunying secondorderharmoniccurrentpropagationcharacteristicsintwostageinverterbasedonvirtualimpedance |