• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Circuits and systems >Reduction of THD in Thirteen-Level Hybrid PV Inverter with Less Number of Switches
【24h】

Reduction of THD in Thirteen-Level Hybrid PV Inverter with Less Number of Switches

机译：减少开关数量的十三级混合光伏逆变器的总谐波失真

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Multilevel inverter (MLI) is one of the most efficient power converters which are especially suited for high power applications with reduced harmonics. MLI not only achieves high output power and is also used in renewable energy sources such as photovoltaic, wind and fuel cells. Among various topologies of MLI, this paper mainly focuses on cascaded MLI with three unequal DC sources called asymmetric cascaded MLI which reduces the number of power switches. Various modulation techniques are also reviewed in literature. In this paper we focus on sinusoidal (or) multicarrier pulse width modulation (SPWM) which improves the output voltage at lower modulation index for obtaining lower Total Harmonic Distortion (THD) level. The gating signal for the 13-level hybrid inverter using SPWM technique is generated using Field Programmable Gate Array (FPGA) processor. The proposed modulation technique results in reduced percentage of THD, but lower order harmonics are not eliminated. So a new technique called Selective Harmonic Elimination (SHE) is also implemented in order to reduce the lower order harmonics. The optimum switching angles are determined for obtaining minimum THD. The performance evaluation of the proposed PWM inverter is verified using an experimental model of 13-level cascaded hybrid MLI and compared with MATLAB/SIMULINK model.
机译：多电平逆变器（MLI）是效率最高的功率转换器之一，特别适合于谐波减少的高功率应用。 MLI不仅可以实现高输出功率，还可以用于光伏，风能和燃料电池等可再生能源。在MLI的各种拓扑中，本文主要关注具有三个不等直流电源的级联MLI，称为不对称级联MLI，这可减少电源开关的数量。文献中也对各种调制技术进行了综述。在本文中，我们专注于正弦（或）多载波脉冲宽度调制（SPWM），它可以在较低的调制指数下提高输出电压，从而获得较低的总谐波失真（THD）电平。使用SPWM技术的13级混合逆变器的门控信号是使用现场可编程门阵列（FPGA）处理器生成的。所提出的调制技术可降低THD的百分比，但不能消除低阶谐波。因此，为了减少低阶谐波，还实施了一种称为选择性谐波消除（SHE）的新技术。确定最佳开关角以获得最小THD。使用13级级联混合MLI的实验模型验证了所提出的PWM逆变器的性能评估，并与MATLAB / SIMULINK模型进行了比较。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号