用于磁共振成像系统的多桥PWM稳流功率放大器及其可行的数字控制实现

IECON'99. Conference Proceedings. 25th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.99CH37029) Pub Date : 1999-11-29 DOI:10.1109/IECON.1999.816500

H. Takano, S. Watanabe, M. Nakaoka

{"title":"用于磁共振成像系统的多桥PWM稳流功率放大器及其可行的数字控制实现","authors":"H. Takano, S. Watanabe, M. Nakaoka","doi":"10.1109/IECON.1999.816500","DOIUrl":null,"url":null,"abstract":"This paper presents a four-paralleled full-bridge-type PWM current controlled power amplifier using IGBTs in order to generate high speed gradient magnetic fields for magnetic resonance imaging system (MRI) and its unique parallel processing digital control scheme based on a phase-lead compensator by a reference delay and a load model feedforward in addition to a dead time compensator. The maximum output voltage of the current controlled power amplifier is 600 VDC and its maximum current is 400 A for inductive loads. The observed waveforms in its experiment are illustrated to demonstrate the effectiveness of the four-paralleled full-bridge power amplifier topology and its unique control scheme.","PeriodicalId":378710,"journal":{"name":"IECON'99. Conference Proceedings. 25th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.99CH37029)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1999-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"16","resultStr":"{\"title\":\"Multiple-bridge PWM current-regulated power amplifier for magnetic resonance imaging system and its feasible digital control implementation\",\"authors\":\"H. Takano, S. Watanabe, M. Nakaoka\",\"doi\":\"10.1109/IECON.1999.816500\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper presents a four-paralleled full-bridge-type PWM current controlled power amplifier using IGBTs in order to generate high speed gradient magnetic fields for magnetic resonance imaging system (MRI) and its unique parallel processing digital control scheme based on a phase-lead compensator by a reference delay and a load model feedforward in addition to a dead time compensator. The maximum output voltage of the current controlled power amplifier is 600 VDC and its maximum current is 400 A for inductive loads. The observed waveforms in its experiment are illustrated to demonstrate the effectiveness of the four-paralleled full-bridge power amplifier topology and its unique control scheme.\",\"PeriodicalId\":378710,\"journal\":{\"name\":\"IECON'99. Conference Proceedings. 25th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.99CH37029)\",\"volume\":\"47 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1999-11-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"16\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IECON'99. Conference Proceedings. 25th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.99CH37029)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/IECON.1999.816500\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IECON'99. Conference Proceedings. 25th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.99CH37029)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IECON.1999.816500","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 16

摘要

本文提出了一种用于磁共振成像系统(MRI)产生高速梯度磁场的四并联全桥型PWM电流控制功率放大器及其独特的并行处理数字控制方案，该方案基于基于参考延迟的超前相位补偿器和负载模型前馈以及死区补偿器。电流控制功率放大器的最大输出电压为600伏直流电，感应负载的最大电流为400 A。实验中观察到的波形证明了四并联全桥功率放大器拓扑结构及其独特的控制方案的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Multiple-bridge PWM current-regulated power amplifier for magnetic resonance imaging system and its feasible digital control implementation

This paper presents a four-paralleled full-bridge-type PWM current controlled power amplifier using IGBTs in order to generate high speed gradient magnetic fields for magnetic resonance imaging system (MRI) and its unique parallel processing digital control scheme based on a phase-lead compensator by a reference delay and a load model feedforward in addition to a dead time compensator. The maximum output voltage of the current controlled power amplifier is 600 VDC and its maximum current is 400 A for inductive loads. The observed waveforms in its experiment are illustrated to demonstrate the effectiveness of the four-paralleled full-bridge power amplifier topology and its unique control scheme.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

IECON'99. Conference Proceedings. 25th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.99CH37029)

自引率

0.00%

发文量