| 基于新型单周控制技术的开关功率放大器 |
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| 引用本文： | 万英飞,许建平,吴松荣.基于新型单周控制技术的开关功率放大器[J].变流技术与电力牵引,2007(1):44-47. |
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| 作者姓名： | 万英飞 许建平 吴松荣 |
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| 作者单位： | 西南交通大学电气工程学院 四川成都610031 |
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| 摘 要： | 分析了新型单周非线性PWM控制开关功率放大器存在的延时问题及由此引起的直流偏置问题,提出了电压补偿解决方案,给出了补偿电压计算公式.补偿前和补偿后系统仿真结果的比较表明,电压补偿方案不仅能有效地消除延时问题,同时还改善了功率放大器的总谐波畸变率(THD),验证了理论分析的正确性.
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| 关 键 词： | 功率放大器 单周控制 全桥 PWM THD 控制技术 控制开关 功率放大器 Control Cycle Improved Based Power Amplifier Switching 理论 验证 总谐波畸变率 改善 补偿方案 比较 仿真结果 系统 计算公式 补偿电压 补偿解 |
| 文章编号： | 1671-8410（2007）01-0044-04 |
| 修稿时间： | 2006-09-20 |
Analysis of Switching Power Amplifier Based on An Improved One Cycle Control |
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| WAN Ying-fei,XU Jian-ping,WU Song-rong.Analysis of Switching Power Amplifier Based on An Improved One Cycle Control[J].Converter Technology & Electric Traction,2007(1):44-47. |
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| Authors: | WAN Ying-fei XU Jian-ping WU Song-rong |
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| Institution: | School of Electrical Engineering,Southwest Jiaotong University,Chengdu,Sichuan 610031,China |
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| Abstract: | It is analyzed the control delay of switching power amplifier with a new nonlinear PWM control and its effects on the DC offset A novel voltage compensation technique is proposed to improve this DC offset voltage. The design formula for computing compensation voltage is given. The amplifiers with and without compensation are analyzed and compared by simulation. The results show that the proposed compensation technique solves the control delay and reduces total harmonic distortion, which is consistent with the analysis. |
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| Keywords: | power amplifier one cycle control full-bridge pulse width modulation total harmonic distortion |
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