{"title":"基于简化离散模型的未知负载Buck变换器数字控制策略","authors":"Zhaoxia Leng, Qingfeng Liu","doi":"10.1109/ICIEA.2018.8397916","DOIUrl":null,"url":null,"abstract":"A digital control strategy based on simplified discrete model is presented, which is easy to be realized digital implementation for Buck converter with unknown load. The simplified discrete model is built by linearizing model coefficient. The calculation method of unknown load is given. The inductor current and the output voltage of actual system are sampled to calculate the load for updating the load parameters of the model. The control duty is deduced by substituting model states into objective function and minimizing the function. According to the error between the model output and the actual system output, the system control error is modified by adjusting the reference values in the objective function of the model. Simulation and experiment results validate that the output voltage of converter can be controlled in the case of load condition changing.","PeriodicalId":140420,"journal":{"name":"2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A digital control strategy based on simplified discrete model for Buck converter with unknown load\",\"authors\":\"Zhaoxia Leng, Qingfeng Liu\",\"doi\":\"10.1109/ICIEA.2018.8397916\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A digital control strategy based on simplified discrete model is presented, which is easy to be realized digital implementation for Buck converter with unknown load. The simplified discrete model is built by linearizing model coefficient. The calculation method of unknown load is given. The inductor current and the output voltage of actual system are sampled to calculate the load for updating the load parameters of the model. The control duty is deduced by substituting model states into objective function and minimizing the function. According to the error between the model output and the actual system output, the system control error is modified by adjusting the reference values in the objective function of the model. Simulation and experiment results validate that the output voltage of converter can be controlled in the case of load condition changing.\",\"PeriodicalId\":140420,\"journal\":{\"name\":\"2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA)\",\"volume\":\"26 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2018-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICIEA.2018.8397916\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICIEA.2018.8397916","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A digital control strategy based on simplified discrete model for Buck converter with unknown load
A digital control strategy based on simplified discrete model is presented, which is easy to be realized digital implementation for Buck converter with unknown load. The simplified discrete model is built by linearizing model coefficient. The calculation method of unknown load is given. The inductor current and the output voltage of actual system are sampled to calculate the load for updating the load parameters of the model. The control duty is deduced by substituting model states into objective function and minimizing the function. According to the error between the model output and the actual system output, the system control error is modified by adjusting the reference values in the objective function of the model. Simulation and experiment results validate that the output voltage of converter can be controlled in the case of load condition changing.
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