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首页> 外文期刊>Power Electronics, IET >Simple discontinuous PWM strategies to reduce the switching losses of an indirect matrix converter
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Simple discontinuous PWM strategies to reduce the switching losses of an indirect matrix converter

机译：简单的不连续PWM策略，以减少间接矩阵转换器的开关损耗

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摘要

This work proposes the new discontinuous pulse width modulation (DPWM) schemes for an indirect matrix converter (IMC) to reduce the switching losses. The use of discontinuous modulation signals reduces the switching losses of the IMC by reducing the switching counts per cycle of the output converter. The key feature of the proposed schemes is the easy implementation as compared to existing DPWM schemes of the IMC. The major drawback of the existing DPWM schemes is the absence of zero current commutation (ZCC). In the absence of ZCC, the switchings of the input converter are accomplished through four-step commutation which adds the difficulties to the implementation. The proposed scheme overcomes above limitation by using the triangular carrier instead of the sawtooth carrier for the modulation of input converter. Consequently, the ZCC is enabled on the input converter which allows the use of two-step commutation. The two-step commutation simplifies the implementation to a great extent. The presented scheme provides the required input/output performance similar to continuous PWM (CPWM) schemes. The proposed work is verified by the simulation and experimental results. The reduction in the switching losses of the IMC by the new scheme is verified based on the comparison with the CPWM scheme.
机译：这项工作提出了用于间接矩阵转换器（IMC）的新的不连续脉冲宽度调制（DPWM）方案，以减少切换损耗。不连续调制信号的使用通过减少输出转换器的每个周期的开关计数来减少IMC的开关损耗。与IMC的现有DPWM方案相比，所提出的方案的关键特征是简单的实现。现有DPWM方案的主要缺点是没有零电流换向（ZCC）。在没有ZCC的情况下，输入转换器的切换是通过四步释放来实现的，这增加了实现的困难。所提出的方案通过使用三角形载波而不是用于调制输入转换器的锯齿载波来克服上述限制。因此，在输入转换器上启用ZCC，允许使用两步换向。两步换向在很大程度上简化了实现。所提出的方案提供了类似于连续PWM（CPWM）方案的所需输入/输出性能。拟议的工作通过模拟和实验结果验证。根据与CPWM方案的比较验证了新方案的IMC的切换损耗的减小。

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