Optimal Hybrid Pulse Width Modulation for Three-Phase Inverters in Electric Propulsion Ships
Global interest in environmentally friendly ships has surged as a result of greenhouse gas reduction policies and the demand for carbon neutrality. Despite growing demand for electric propulsion systems, there is a lack of research and development on crucial components. Efficiency and stability are...
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| Format: | Article |
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MDPI AG
2024-02-01
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| Series: | Machines |
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| Online Access: | https://www.mdpi.com/2075-1702/12/2/109 |
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| author | Chan Roh Hyeon-min Jeon Seong-wan Kim Jong-su Kim Na-young Lee Sung-woo Song |
| author_facet | Chan Roh Hyeon-min Jeon Seong-wan Kim Jong-su Kim Na-young Lee Sung-woo Song |
| author_sort | Chan Roh |
| collection | DOAJ |
| description | Global interest in environmentally friendly ships has surged as a result of greenhouse gas reduction policies and the demand for carbon neutrality. Despite growing demand for electric propulsion systems, there is a lack of research and development on crucial components. Efficiency and stability are primarily influenced by the performance of inverters, which are essential for driving propulsion motors. Existing inverter control techniques can be of two types: continuous-PWM (pulse width modulation) methods for harmonic performance enhancement and discontinuous-PWM methods for efficiency improvement by reducing losses. However, there are limitations in that each PWM method exhibits substantial variations in inverter performance based on its operating conditions. To address these challenges, this study proposes the hybrid pulse-width-modulation (HPWM) method for optimal inverter operation. By analyzing the inverter’s operating conditions, the proposed HPWM method adopts various pulse-width-modulation (PWM) strategies based on a modulation index to achieve harmonic improvement and loss reduction. Our focus is on comparing and analyzing diverse PWM techniques under varying modulation indices and frequency conditions to attain the optimal operating conditions. Experimental validation of the proposed method was conducted using a 2.2 kW dynamometer. In comparison with existing PWM methods, the proposed method demonstrated superior performance. |
| first_indexed | 2024-03-07T22:23:31Z |
| format | Article |
| id | doaj.art-23932b16f97149808d3dff14db93c908 |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-07T22:23:31Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
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| series | Machines |
| spelling | doaj.art-23932b16f97149808d3dff14db93c9082024-02-23T15:25:02ZengMDPI AGMachines2075-17022024-02-0112210910.3390/machines12020109Optimal Hybrid Pulse Width Modulation for Three-Phase Inverters in Electric Propulsion ShipsChan Roh0Hyeon-min Jeon1Seong-wan Kim2Jong-su Kim3Na-young Lee4Sung-woo Song5Division of Marine System Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Busan 49112, Republic of KoreaDivision of Marine System Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Busan 49112, Republic of KoreaDivision of Maritime AI & Cyber Security, Korea Maritime & Ocean University, 727 Taejong-ro, Busan 49112, Republic of KoreaDivision of Marine System Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Busan 49112, Republic of KoreaDivision of Marine System Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Busan 49112, Republic of KoreaDivision of Marine System Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Busan 49112, Republic of KoreaGlobal interest in environmentally friendly ships has surged as a result of greenhouse gas reduction policies and the demand for carbon neutrality. Despite growing demand for electric propulsion systems, there is a lack of research and development on crucial components. Efficiency and stability are primarily influenced by the performance of inverters, which are essential for driving propulsion motors. Existing inverter control techniques can be of two types: continuous-PWM (pulse width modulation) methods for harmonic performance enhancement and discontinuous-PWM methods for efficiency improvement by reducing losses. However, there are limitations in that each PWM method exhibits substantial variations in inverter performance based on its operating conditions. To address these challenges, this study proposes the hybrid pulse-width-modulation (HPWM) method for optimal inverter operation. By analyzing the inverter’s operating conditions, the proposed HPWM method adopts various pulse-width-modulation (PWM) strategies based on a modulation index to achieve harmonic improvement and loss reduction. Our focus is on comparing and analyzing diverse PWM techniques under varying modulation indices and frequency conditions to attain the optimal operating conditions. Experimental validation of the proposed method was conducted using a 2.2 kW dynamometer. In comparison with existing PWM methods, the proposed method demonstrated superior performance.https://www.mdpi.com/2075-1702/12/2/109electric propulsion systemthree-phase inverterscontinuous pulse-width modulationdiscontinuous pulse-width modulationhybrid pulse-width modulationcontrol algorithm |
| spellingShingle | Chan Roh Hyeon-min Jeon Seong-wan Kim Jong-su Kim Na-young Lee Sung-woo Song Optimal Hybrid Pulse Width Modulation for Three-Phase Inverters in Electric Propulsion Ships Machines electric propulsion system three-phase inverters continuous pulse-width modulation discontinuous pulse-width modulation hybrid pulse-width modulation control algorithm |
| title | Optimal Hybrid Pulse Width Modulation for Three-Phase Inverters in Electric Propulsion Ships |
| title_full | Optimal Hybrid Pulse Width Modulation for Three-Phase Inverters in Electric Propulsion Ships |
| title_fullStr | Optimal Hybrid Pulse Width Modulation for Three-Phase Inverters in Electric Propulsion Ships |
| title_full_unstemmed | Optimal Hybrid Pulse Width Modulation for Three-Phase Inverters in Electric Propulsion Ships |
| title_short | Optimal Hybrid Pulse Width Modulation for Three-Phase Inverters in Electric Propulsion Ships |
| title_sort | optimal hybrid pulse width modulation for three phase inverters in electric propulsion ships |
| topic | electric propulsion system three-phase inverters continuous pulse-width modulation discontinuous pulse-width modulation hybrid pulse-width modulation control algorithm |
| url | https://www.mdpi.com/2075-1702/12/2/109 |
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