| 基于三电平逆变器的异步电动机直接转矩控制新方法 |
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| 引用本文： | 吴胜兵,茆美琴.基于三电平逆变器的异步电动机直接转矩控制新方法[J].变流技术与电力牵引,2009(2):22-26. |
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| 作者姓名： | 吴胜兵 茆美琴 |
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| 作者单位： | 教育部光伏系统工程研究中心合肥工业大学能源研究所; |
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| 基金项目： | 教育部科学技术研究重大项目(306004) |
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| 摘 要： | 在异步电动机数学模型和三电平空间矢量调制法的基础上，提出了一种基于三电平逆变器的异步电动机直接转矩控制新方法。新方法将砰-砰控制和开关矢量查表法相结合，通过最优固定合成矢量的选择，既有效地抑制了三电平直流侧中点电压不平衡、限制了输出电压变化率dvldt并降低了开关损耗，又使系统获得了良好的稳态和动态性能。理论分析和仿真结果证明了该控制方法的合理性和可行性。
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| 关 键 词： | 直接转矩控制 三电平逆变器 砰-砰控制 最优固定合成矢量 中点平衡 |
A Novel DTC Algorithm for Induction Motor Based on Three-level Inverter |
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| WU Sheng-bing,MAO Mei-qin.A Novel DTC Algorithm for Induction Motor Based on Three-level Inverter[J].Converter Technology & Electric Traction,2009(2):22-26. |
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| Authors: | WU Sheng-bing MAO Mei-qin |
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| Institution: | Research Center for Photovoltaic Engineering System;Ministry of Education PRC.;Institute of Energy Research;Hefei University of Technology;Hefei;Anhui 230009;China |
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| Abstract: | It presents a novel direct torque control(DTC) strategy for three-level inverter based on mathematic model of induction motor and three-level space vector modulation.The new control algorithm selects optimal fixed synthesizing vectors using bang-bang control and switching vectors table.The drive system has excellent steady-state and dynamic performance with neutral-point voltage unbalance problem solved,dv/dt of output voltage restrained and switching loss reduced.Analysis and simulation results show the co... |
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| Keywords: | DTC three-level inverter bang-bang control optimal fixed synthesizing vector neutral-point balance |
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