Dual-function three-phase double-frequency grid-connected inverter adopted the sliding mode control

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作者：
机构：
[1] Hou, Shi-Ying
[2] Song, Xing
[3] Sun, Tao
来源：
Song, X. | 1600年 / Editorial Department of Electric Machines and Control卷 / 17期
关键词：
Robustness (control systems) - Electric power transmission networks - Harmonic functions - Electric power system control - Electric inverters - Harmonic analysis;
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摘要：
Aiming at reducing the switching losses and broadening the harmonic compensation capacity, the three-phase double-frequency grid-connected inverter with harmonic compensation function is studied. According to the feature that the harmonic compensation current of the three-phase double-frequency grid-connected inverter can flow from high-frequency unit and low-frequency unit. The harmonic compensation mode of the three-phase double-frequency grid-connected inverter was analyzed firstly. Then the unified control for grid generation and the additional harmonic compensation function was designed. The high-frequency unit determines the dynamic and static performance of the entire system. To obtain good robustness, sliding mode control of high-frequency unit was studied. Simulation results show that the dual-function three-phase double-frequency grid-connected inverter based on sliding mode control well compensates harmonics in the power grid in the grid generation time and has good dynamic and static performance.
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