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首页> 外文期刊>International Journal of Electrical Engineering Education >Enhanced frequency shift carrier modulation for H-bridge multilevel converter to conquer the impact of instability in deputize condenser voltage
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Enhanced frequency shift carrier modulation for H-bridge multilevel converter to conquer the impact of instability in deputize condenser voltage

机译：用于H桥多电平转换器的增强型频移载波调制，以克服不稳定性对代表电容器电压的影响

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摘要

H-bridge multilevel converter is the most challenging topology from nominal to high power applications. However, when the energy is exchanged between AC side and DC side or vice versa, the fluctuation in the capacitor used in deputize unit is unavoidable. The fluctuation in the deputize unit is due to the increase in the total harmonic distortion by the capacitor in the output voltages. This total harmonic distortion is evaded by exploring the deputize unit capacitor voltage mathematically. This paper proposes the enhanced frequency shift carrier modulation in H-bridge multilevel converter to suppress the influence of fluctuation in deputize unit capacitor voltages. Enhanced frequency shift carrier modulation is considered for nonlinear compensation. The principal results of using this enhanced frequency shift carrier modulation improvise the total harmonic distortion in the output voltage of H-bridge multilevel converter. Simulation and experimental results are done using MATLAB/SIMULINK to verify the effectiveness of the proposed control scheme.
机译：从标称功率到高功率应用，H桥多电平转换器是最具挑战性的拓扑。但是，当能量在交流侧和直流侧之间交换时，反之亦然，在代理单元中使用的电容器的波动是不可避免的。代表单位的波动是由于电容器在输出电压中总谐波失真的增加所致。通过数学方式探索代理单位电容器电压，可以避免这种总谐波失真。本文提出了一种在H桥多电平转换器中增强的移频载波调制，以抑制代表单位电容器电压波动的影响。为了非线性补偿，考虑了增强的频移载波调制。使用这种增强的移频载波调制的主要结果改善了H桥多电平转换器输出电压中的总谐波失真。使用MATLAB / SIMULINK完成了仿真和实验结果，以验证所提出的控制方案的有效性。

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