Disturbance Rejection and Control Design of MVDC Converter with Evaluation of Power Loss and Efficiency Comparison of SiC and Si Based Power Devices
With direct current (DC) power generation from renewable sources, as well as the current relocation of loads from alternating current (AC) to DC, medium-voltage DC (MVDC) should fill gaps in the areas of distribution and transmission, thereby improving energy efficiency. The MVDC system is a platfor...
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| Format: | Article |
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MDPI AG
2020-11-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/9/11/1878 |
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| author | Faisal Mehmood Shah Sarmad Maqsood Robertas Damaševičius Tomas Blažauskas |
| author_facet | Faisal Mehmood Shah Sarmad Maqsood Robertas Damaševičius Tomas Blažauskas |
| author_sort | Faisal Mehmood Shah |
| collection | DOAJ |
| description | With direct current (DC) power generation from renewable sources, as well as the current relocation of loads from alternating current (AC) to DC, medium-voltage DC (MVDC) should fill gaps in the areas of distribution and transmission, thereby improving energy efficiency. The MVDC system is a platform that interconnects electric power generation renewables (solar, wind) with loads such as data centers, industrial facilities and electric vehicle (EV) charging stations (also using MVDC technology). DC–DC power converters are part of the rising technology for interconnecting future DC grids, providing good controllability, reliability and bi-directional power flow. The contribution of this work is a novel and efficient multi-port DC–DC converter topology having interconnections between two converters, three-level neutral point clamping (NPC) on the high-voltage (HV) side and two converters on the low-voltage (LV) side, providing two nominal low voltages of 400 V (constant) and 500 V (variable), respectively. The design of this new and effective control strategy on the LV side has taken into condition load disturbances, fluctuations and voltage dips. A double-closed-loop control topology is suggested, where an outside voltage control loop (in which the capacitance energies are analyzed as variable, and the inside current loop is decoupled without the precise value of boost inductance) is used. The simulation results show the effectiveness of the proposed control system. In the second part of this study, wide-bandgap SiC and Si devices are compared by using comprehensive mathematical modeling and LT-spice software. Improving power loss efficiency and overall cost comparisons are also discussed. |
| first_indexed | 2024-03-10T14:59:54Z |
| format | Article |
| id | doaj.art-858e9343e6a04539b923fc15b6ea29b2 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T14:59:54Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-858e9343e6a04539b923fc15b6ea29b22023-11-20T20:13:26ZengMDPI AGElectronics2079-92922020-11-01911187810.3390/electronics9111878Disturbance Rejection and Control Design of MVDC Converter with Evaluation of Power Loss and Efficiency Comparison of SiC and Si Based Power DevicesFaisal Mehmood Shah0Sarmad Maqsood1Robertas Damaševičius2Tomas Blažauskas3School of Electrical & Electronic Engineering, North China Electric Power University, Beijing 102206, ChinaDepartment of Software Engineering, Kaunas University of Technology, 51368 Kaunas, LithuaniaDepartment of Software Engineering, Kaunas University of Technology, 51368 Kaunas, LithuaniaDepartment of Software Engineering, Kaunas University of Technology, 51368 Kaunas, LithuaniaWith direct current (DC) power generation from renewable sources, as well as the current relocation of loads from alternating current (AC) to DC, medium-voltage DC (MVDC) should fill gaps in the areas of distribution and transmission, thereby improving energy efficiency. The MVDC system is a platform that interconnects electric power generation renewables (solar, wind) with loads such as data centers, industrial facilities and electric vehicle (EV) charging stations (also using MVDC technology). DC–DC power converters are part of the rising technology for interconnecting future DC grids, providing good controllability, reliability and bi-directional power flow. The contribution of this work is a novel and efficient multi-port DC–DC converter topology having interconnections between two converters, three-level neutral point clamping (NPC) on the high-voltage (HV) side and two converters on the low-voltage (LV) side, providing two nominal low voltages of 400 V (constant) and 500 V (variable), respectively. The design of this new and effective control strategy on the LV side has taken into condition load disturbances, fluctuations and voltage dips. A double-closed-loop control topology is suggested, where an outside voltage control loop (in which the capacitance energies are analyzed as variable, and the inside current loop is decoupled without the precise value of boost inductance) is used. The simulation results show the effectiveness of the proposed control system. In the second part of this study, wide-bandgap SiC and Si devices are compared by using comprehensive mathematical modeling and LT-spice software. Improving power loss efficiency and overall cost comparisons are also discussed.https://www.mdpi.com/2079-9292/9/11/1878bi-directionalmedium-voltage DC–DC convertersilicon-carbideneutral point clampingdouble-closed-loop |
| spellingShingle | Faisal Mehmood Shah Sarmad Maqsood Robertas Damaševičius Tomas Blažauskas Disturbance Rejection and Control Design of MVDC Converter with Evaluation of Power Loss and Efficiency Comparison of SiC and Si Based Power Devices Electronics bi-directional medium-voltage DC–DC converter silicon-carbide neutral point clamping double-closed-loop |
| title | Disturbance Rejection and Control Design of MVDC Converter with Evaluation of Power Loss and Efficiency Comparison of SiC and Si Based Power Devices |
| title_full | Disturbance Rejection and Control Design of MVDC Converter with Evaluation of Power Loss and Efficiency Comparison of SiC and Si Based Power Devices |
| title_fullStr | Disturbance Rejection and Control Design of MVDC Converter with Evaluation of Power Loss and Efficiency Comparison of SiC and Si Based Power Devices |
| title_full_unstemmed | Disturbance Rejection and Control Design of MVDC Converter with Evaluation of Power Loss and Efficiency Comparison of SiC and Si Based Power Devices |
| title_short | Disturbance Rejection and Control Design of MVDC Converter with Evaluation of Power Loss and Efficiency Comparison of SiC and Si Based Power Devices |
| title_sort | disturbance rejection and control design of mvdc converter with evaluation of power loss and efficiency comparison of sic and si based power devices |
| topic | bi-directional medium-voltage DC–DC converter silicon-carbide neutral point clamping double-closed-loop |
| url | https://www.mdpi.com/2079-9292/9/11/1878 |
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