One-step commutation in voltage source inverters using pulse wire sensor based current sign detection
One-step commutation in voltage source inverters using pulse wire sensor based current sign detection
复制标题
使用基于脉冲线传感器的电流符号检测在电压源逆变器中进行一步换向
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
W. Hofmann
中科院分区：
文献类型：
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作者：
S. Krauss;W. Hofmann
死区效应是 DC/AC 和 AC/AC 功率转换中的基本问题之一，人们对其进行了长期的研究。过去几年提出了基于消除或减少死区时间效应的不同方法。除了减少半导体开关时间之外，其主要思想是通过将平均死区时间误差电压添加到参考电压来补偿影响。更可行的方法是基于对相应相电流极性的了解，而只有那些能够在实际方向上传导电流的半导体是有源开关的。由此产生的换向策略（称为一步换向）有望显着改善电流和电压波形的质量。除了传统的电流测量方法之外，本文还提出了一种基于脉冲线传感器的新型鲁棒电流符号检测方法。演示了测量策略的第一个实现，采用通用电压源逆变器，在仿真环境中由标准空间矢量调制和一步换向算法控制。
The dead-time effect, known as one of the basic problems in dc/ac and ac/ac power conversion, has been investigated over a long period. Varying methods based on the elimination, respectively the reduction of the dead-time effect were proposed over the last years. The main idea, beside the reduction of the semiconductor switching times, is to compensate the impact by adding the averaged dead-time error-voltage to the reference voltage. A more feasible approach is based on the knowledge of the according phase current polarity, whereas only those semiconductors are active switched, which are able to conduct the current in the actual direction. The resulting commutation strategy, known as one-step commutation, promises appreciable improvements concerning the quality of current and voltage waveforms. Beside conventional current measurement methods, a novel robust current sign detection approach, based on pulse wire sensors is presented in this paper. A first implementation of the measuring strategy is demonstrated, taking a common voltage source inverter, controlled by a standard space vector modulation and an one-step commutation algorithm in a simulation environment.