A high-efficiency diode-clamped linear amplifier
A high-efficiency diode-clamped linear amplifier
复制标题
高效二极管钳位线性放大器
DOI：
10.1002/ecj.10120
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
H. Fujita
中科院分区：
文献类型：
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作者：
H. Fujita
本文提出了一种无需任何开关操作的新型功率转换器，它作为一个线性放大器工作。该变流器的主电路由串联MOSFET、串联多路直流电源和钳位二极管组成。电路配置类似于二极管钳位多电平逆变器，不同之处在于使用了互补功率器件，即n沟道和p沟道MOSFET。其中一个串联的MOSFET工作在有源状态，就像线性放大器一样，而其他MOSFET工作在接通或关断状态，就像逆变电路一样。结果表明，该变流器的效率可达90%，且不会因开关操作而产生任何纹波或谐波。实验结果表明，该变流器能够驱动一台2.2kW的三相感应电动机。《威利期刊》，91(6)：47-56,2008；在线发表在《威利国际科学》(www.intercience.wiley.com)上。DOI 10.1002/ecj.10120
This paper proposes a new power converter without any switching operation and which works as a linear amplifier. The main circuit of the proposed converter consists of series-connected MOSFETs, series-multi DC power supplies, and clamping diodes. The circuit configuration is similar to a diode-clamped multi-level inverter, except for using complementary power devices, which are n- and p-channel MOSFETs. One of the series-connected MOSFETs operates in an active state just like a linear amplifier, while the other MOSFETs operate in on or off states like an inverter circuit. As a result, the proposed converter achieves an acceptable efficiency as high as 90% without any ripples or harmonics caused by switching operation. Experimental results demonstrate that the proposed converter has the capability to drive a 2.2-kW three-phase induction motor. © 2008 Wiley Periodicals, Inc. Electron Comm Jpn, 91(6): 47–56, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecj.10120