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首页> 外文会议>2013 IEEE International Symposium on Sensorless Control for Electrical Drives and Predictive Control of Electrical Drives and Power Electronics >Predictive frequency spectrum shaping of currents in a three phase inverter
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Predictive frequency spectrum shaping of currents in a three phase inverter

机译：三相逆变器中电流的预测频谱整形

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摘要

Model predictive control is a very intuitive, simple, and flexible control strategy that can be applied to any converter topology achieving a wide variety of control objectives. However, one of the disadvantages of this control method is the variable switching frequency of the gate signals, which increase the losses and can generate resonances. In this paper, a simple and powerful method to shape the switching frequency spectrum of the gate signals of the converter is proposed. The proposed method is very flexible allowing to avoid, displace or concentrate the frequency spectrum in an specific range of switching frequencies. The method is based on a virtual filter which is simulated inside the digital processor and its output is evaluated, similarly to the load model, for each one of the possible switching states, incorporating later this information to the cost function. Simulation results shows the validity and performance of the proposed control.
机译：模型预测控制是一种非常直观，简单且灵活的控制策略，可以应用于实现多种控制目标的任何转换器拓扑。然而，该控制方法的缺点之一是门信号的可变开关频率，这增加了损耗并可能产生谐振。本文提出了一种简单而有效的方法来成形转换器的栅极信号的开关频谱。所提出的方法是非常灵活的，允许避免，移动或集中频谱在特定的开关频率范围内。该方法基于虚拟滤波器，该虚拟滤波器在数字处理器内部进行仿真，并且与负载模型类似，针对每个可能的开关状态评估其输出，然后将此信息合并到成本函数中。仿真结果表明了所提控制的有效性和性能。

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