Phase-Shedding Control in Two Parallel Interleaved Three-Phase ZVS Inverters for Improved Light Load Efficiency
The parallel interleaved three-phase inverters are suitable for high-power applications due to the current ripple canceling effect. The power density and efficiency can be further improved with the current ripple prediction (CRP) based high frequency zero-voltage switching (ZVS). However, the variab...
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| Veröffentlicht in: | IEEE access 2023, Vol.11, p.77793-77801 |
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| creator | Xie, Rui Li, Hongke Lin, Bin Xu, Ouyang Wang, Xiaohe Han, Yanguo Chen, Jianliang Xin, Zhen |
| description | The parallel interleaved three-phase inverters are suitable for high-power applications due to the current ripple canceling effect. The power density and efficiency can be further improved with the current ripple prediction (CRP) based high frequency zero-voltage switching (ZVS). However, the variable switching frequency increases rapidly as the power decrease, resulting in higher turn-off loss at light load despite the elimination of turn-on loss. In this paper, a phase-shedding control strategy is proposed along with the CRP based ZVS method to improve the light load efficiency. Only four phase-legs of the two parallel inverters operate at light load to reduce the switching frequency and the circulating current between the two clamping phase-legs. The proposed method can achieve full-range ZVS for all the switches without any auxiliary circuits or high frequency sensors. Current sharing can also be realized between the two clamping phase-legs based on accurate gate signal modulation. A 5 kW simulation and experimental prototype using SiC devices interfacing 400 V dc with three-phase 110 V ac grid is developed to verify the effectiveness of the proposed control strategy. |
| doi_str_mv | 10.1109/ACCESS.2023.3298676 |
| format | Article |
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The power density and efficiency can be further improved with the current ripple prediction (CRP) based high frequency zero-voltage switching (ZVS). However, the variable switching frequency increases rapidly as the power decrease, resulting in higher turn-off loss at light load despite the elimination of turn-on loss. In this paper, a phase-shedding control strategy is proposed along with the CRP based ZVS method to improve the light load efficiency. Only four phase-legs of the two parallel inverters operate at light load to reduce the switching frequency and the circulating current between the two clamping phase-legs. The proposed method can achieve full-range ZVS for all the switches without any auxiliary circuits or high frequency sensors. Current sharing can also be realized between the two clamping phase-legs based on accurate gate signal modulation. A 5 kW simulation and experimental prototype using SiC devices interfacing 400 V dc with three-phase 110 V ac grid is developed to verify the effectiveness of the proposed control strategy.</description><identifier>ISSN: 2169-3536</identifier><identifier>EISSN: 2169-3536</identifier><identifier>DOI: 10.1109/ACCESS.2023.3298676</identifier><identifier>CODEN: IAECCG</identifier><language>eng</language><publisher>Piscataway: IEEE</publisher><subject>Clamping ; Clamps ; Current ripple prediction ; Current sharing ; Efficiency ; High frequency ; Inverters ; light load efficiency improvement ; Load management ; phase shedding ; Ripples ; Shedding ; Silicon carbide ; Switches ; Switching ; Switching frequency ; three-phase inverter ; Voltage control ; Zero voltage switching</subject><ispartof>IEEE access, 2023, Vol.11, p.77793-77801</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2023</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c359t-f3efb676d082152f9fec7de4c438eb94dfcd18be4902cd8efd1bd0b1eb8c48cc3</cites><orcidid>0000-0001-6489-0135 ; 0000-0002-4184-6710 ; 0000-0001-7229-988X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/10194251$$EHTML$$P50$$Gieee$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,864,2102,4024,27633,27923,27924,27925,54933</link.rule.ids></links><search><creatorcontrib>Xie, Rui</creatorcontrib><creatorcontrib>Li, Hongke</creatorcontrib><creatorcontrib>Lin, Bin</creatorcontrib><creatorcontrib>Xu, Ouyang</creatorcontrib><creatorcontrib>Wang, Xiaohe</creatorcontrib><creatorcontrib>Han, Yanguo</creatorcontrib><creatorcontrib>Chen, Jianliang</creatorcontrib><creatorcontrib>Xin, Zhen</creatorcontrib><title>Phase-Shedding Control in Two Parallel Interleaved Three-Phase ZVS Inverters for Improved Light Load Efficiency</title><title>IEEE access</title><addtitle>Access</addtitle><description>The parallel interleaved three-phase inverters are suitable for high-power applications due to the current ripple canceling effect. The power density and efficiency can be further improved with the current ripple prediction (CRP) based high frequency zero-voltage switching (ZVS). However, the variable switching frequency increases rapidly as the power decrease, resulting in higher turn-off loss at light load despite the elimination of turn-on loss. In this paper, a phase-shedding control strategy is proposed along with the CRP based ZVS method to improve the light load efficiency. Only four phase-legs of the two parallel inverters operate at light load to reduce the switching frequency and the circulating current between the two clamping phase-legs. The proposed method can achieve full-range ZVS for all the switches without any auxiliary circuits or high frequency sensors. Current sharing can also be realized between the two clamping phase-legs based on accurate gate signal modulation. A 5 kW simulation and experimental prototype using SiC devices interfacing 400 V dc with three-phase 110 V ac grid is developed to verify the effectiveness of the proposed control strategy.</description><subject>Clamping</subject><subject>Clamps</subject><subject>Current ripple prediction</subject><subject>Current sharing</subject><subject>Efficiency</subject><subject>High frequency</subject><subject>Inverters</subject><subject>light load efficiency improvement</subject><subject>Load management</subject><subject>phase shedding</subject><subject>Ripples</subject><subject>Shedding</subject><subject>Silicon carbide</subject><subject>Switches</subject><subject>Switching</subject><subject>Switching frequency</subject><subject>three-phase inverter</subject><subject>Voltage control</subject><subject>Zero voltage switching</subject><issn>2169-3536</issn><issn>2169-3536</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>ESBDL</sourceid><sourceid>RIE</sourceid><sourceid>DOA</sourceid><recordid>eNpNUU1LAzEQXURBqf4CPQQ8b83XdpOjLFULBYVWD15CNpm0KeumZlel_960W8S5zDDz3psZXpZdEzwmBMu7-6qaLhZjiikbMyrFpJycZBeUTGTOCjY5_VefZ1ddt8EpRGoV5UUWXta6g3yxBmt9u0JVaPsYGuRbtPwJ6EVH3TTQoFnbQ2xAf4NFy3UEyA9E9P62SLNviGncIRcimn1sY9jD5n617tE8aIumznnjoTW7y-zM6aaDq2MeZa8P02X1lM-fH2fV_Tw3rJB97hi4Oj1isaCkoE46MKUFbjgTUEtunbFE1MAlpsYKcJbUFtcEamG4MIaNstmga4PeqG30HzruVNBeHRohrpSOvTcNqEITkDWxIEFzRonGGpfgdFlwBpTzpHU7aKXHPr-g69UmfMU2na-o4FzIkpRlQrEBZWLougjubyvBam-UGoxSe6PU0ajEuhlYHgD-MYjktCDsF-LokJQ</recordid><startdate>2023</startdate><enddate>2023</enddate><creator>Xie, Rui</creator><creator>Li, Hongke</creator><creator>Lin, Bin</creator><creator>Xu, Ouyang</creator><creator>Wang, Xiaohe</creator><creator>Han, Yanguo</creator><creator>Chen, Jianliang</creator><creator>Xin, Zhen</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| subjects | Clamping Clamps Current ripple prediction Current sharing Efficiency High frequency Inverters light load efficiency improvement Load management phase shedding Ripples Shedding Silicon carbide Switches Switching Switching frequency three-phase inverter Voltage control Zero voltage switching |
| title | Phase-Shedding Control in Two Parallel Interleaved Three-Phase ZVS Inverters for Improved Light Load Efficiency |
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