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首页> 外文期刊>Power Electronics, IET >Adapted near-state PWM for dual two-level inverters in order to reduce common-mode voltage and switching losses
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Adapted near-state PWM for dual two-level inverters in order to reduce common-mode voltage and switching losses

机译：适用于双层逆变器的近态PWM，以减少共模电压和开关损耗

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摘要

In this paper, a near-state pulse-width modulation (NSPWM) algorithm is proposed and implemented on dual-two-level voltage-source inverters (D2L-VSIs) in order to reduce the common-mode voltage (CMV), the inverter switching losses, the current total harmonic distortion, and the side effects of bearing currents --compared with space vector modulation (SVM) and PWM7. To gain these goals, two conventional two-level inverters of the D2L-VSI are controlled, separately, with specific switching sequences and an adjusted phase difference between the carriers of two inverters. For evaluating and comparing these PWM techniques mathematically, both CMV root mean square generated and switching losses of the D2L-VSI are formulated as a function of the power factor of the D2L-VSI, which is driven by the methods detailed in this study. Eventually, theories and analysis, as well as simulations and experimental results --which are generated by MATLAB/Simulink environment and a 300W scaled-down D2LVSI prototype, respectively --authenticate the superiority of the proposed NSPWM over both SVM and PWM7.
机译：在本文中，提出了近态脉冲宽度调制（NSPWM）算法并在双两级电压源逆变器（D2L-VSIS）上实现，以减少共模电压（CMV），逆变器开关损耗，电流总谐波失真和轴承电流的副作用 - 与空间矢量调制（SVM）和PWM7对比。为了获得这些目标，将D2L-VSI的两个传统的两级逆变器分开控制，具有特定的切换序列和两个逆变器的载波之间的调整后的相位差。为了数学评估和比较这些PWM技术，将D2L-VSI的产生和切换D2L-VSI的损耗的两种CMV根均线作为D2L-VSI的功率因数的函数配制，这通过本研究中详述的方法驱动。最终，由Matlab / Simulink环境和300W缩小D2LVSI原型产生的理论和分析以及模拟和实验结果，分别 - 将所提出的NSPWM的优越性分别为SVM和PWM7。

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