{"title":"大功率中压电流源变换器的在线选择性谐波消除调制方案","authors":"Martti Muzyka, Q. Wei, Zijian Wang, N. Zargari","doi":"10.1109/PEDG56097.2023.10215241","DOIUrl":null,"url":null,"abstract":"In high-power, medium-voltage (MV) pulse width modulated (PWM) current source converter (CSC) based drives, selective harmonic elimination (SHE) configured with amplitude modulation index control is commonly used to modulate the front-end PWM current source rectifier (CSR), as it possesses the ability to eliminate problematic low-order harmonics, while also offering full control over the DC-link current. To practically implement this variant of SHE, the switching angles solved for at discrete values of the amplitude modulation index, across its full operating range, must be pre-computed off-line, and then stored within a look-up table on the digital controller. As a result of this off-line implementation, conventional SHE configured with amplitude modulation index control features poor dynamic performance and requires the use of a large, memory-exhaustive look-up table. This paper presents an on-line SHE scheme that models each of the necessary independent switching angles as polynomial functions of the amplitude modulation index using curve-fitting techniques. This method of implementation allows for the switching angles to be accurately recomputed in real-time, thus offering improved dynamic performance and eliminating the need for a large look-up table. Additionally, the inherent benefits of conventional SHE are retained. Experimental verification proving the effectiveness of the proposed on-line SHE scheme is provided.","PeriodicalId":386920,"journal":{"name":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"88 ","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"An On-Line Selective Harmonic Elimination Modulation Scheme for High-Power Medium-Voltage Current Source Converters\",\"authors\":\"Martti Muzyka, Q. Wei, Zijian Wang, N. Zargari\",\"doi\":\"10.1109/PEDG56097.2023.10215241\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In high-power, medium-voltage (MV) pulse width modulated (PWM) current source converter (CSC) based drives, selective harmonic elimination (SHE) configured with amplitude modulation index control is commonly used to modulate the front-end PWM current source rectifier (CSR), as it possesses the ability to eliminate problematic low-order harmonics, while also offering full control over the DC-link current. To practically implement this variant of SHE, the switching angles solved for at discrete values of the amplitude modulation index, across its full operating range, must be pre-computed off-line, and then stored within a look-up table on the digital controller. As a result of this off-line implementation, conventional SHE configured with amplitude modulation index control features poor dynamic performance and requires the use of a large, memory-exhaustive look-up table. This paper presents an on-line SHE scheme that models each of the necessary independent switching angles as polynomial functions of the amplitude modulation index using curve-fitting techniques. This method of implementation allows for the switching angles to be accurately recomputed in real-time, thus offering improved dynamic performance and eliminating the need for a large look-up table. Additionally, the inherent benefits of conventional SHE are retained. Experimental verification proving the effectiveness of the proposed on-line SHE scheme is provided.\",\"PeriodicalId\":386920,\"journal\":{\"name\":\"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)\",\"volume\":\"88 \",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-06-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/PEDG56097.2023.10215241\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PEDG56097.2023.10215241","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
An On-Line Selective Harmonic Elimination Modulation Scheme for High-Power Medium-Voltage Current Source Converters
In high-power, medium-voltage (MV) pulse width modulated (PWM) current source converter (CSC) based drives, selective harmonic elimination (SHE) configured with amplitude modulation index control is commonly used to modulate the front-end PWM current source rectifier (CSR), as it possesses the ability to eliminate problematic low-order harmonics, while also offering full control over the DC-link current. To practically implement this variant of SHE, the switching angles solved for at discrete values of the amplitude modulation index, across its full operating range, must be pre-computed off-line, and then stored within a look-up table on the digital controller. As a result of this off-line implementation, conventional SHE configured with amplitude modulation index control features poor dynamic performance and requires the use of a large, memory-exhaustive look-up table. This paper presents an on-line SHE scheme that models each of the necessary independent switching angles as polynomial functions of the amplitude modulation index using curve-fitting techniques. This method of implementation allows for the switching angles to be accurately recomputed in real-time, thus offering improved dynamic performance and eliminating the need for a large look-up table. Additionally, the inherent benefits of conventional SHE are retained. Experimental verification proving the effectiveness of the proposed on-line SHE scheme is provided.