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首页> 外文期刊>Mathematical Problems in Engineering >Thermal Equilibrium Dynamic Control Based on DPWM Dual-Mode Modulation of High Power NPC Three-Level Inverter
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Thermal Equilibrium Dynamic Control Based on DPWM Dual-Mode Modulation of High Power NPC Three-Level Inverter

机译：大功率NPC三电平逆变器基于DPWM双模调制的热平衡动态控制

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摘要

In some special applications of NPC three-level inverters, such as mine hoist, there exist special conditions of overloading during the whole hoisting process and large overload in starting stage, during which the power-loss calculation of power devices and thermal control are important factors affecting the thermal stability of inverters. The principles of SVPWM and DPWM were described in this paper firstly, based on which the dynamic power losses of the two modulations of hoist in single period were calculated. Secondly, a thermal equilibrium dynamic control based on DPMW dual-mode modulation was proposed, which can switch the modulation dynamically according to the change of dynamic power loss to realize dynamic control of power loss and thermal equilibrium of inverter. Finally, simulation and experiment prove the effectiveness of the proposed strategy.
机译：在矿山提升机等NPC三电平逆变器的一些特殊应用中，存在着特殊的提升条件，即整个提升过程中存在过载，在启动阶段存在较大的过载，在此期间功率器件的功耗计算和热控制是重要的因素。影响逆变器的热稳定性。首先介绍了SVPWM和DPWM的原理，在此基础上，计算了提升机两个调制方式在单个周期内的动态功率损耗。其次，提出了一种基于DPMW双模调制的热平衡动态控制方法，该方法可以根据动态功率损耗的变化动态地切换调制方式，从而实现功率损耗和逆变器热平衡的动态控制。最后，仿真和实验证明了该策略的有效性。

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  • 来源
    《Mathematical Problems in Engineering》 |2016年第4期|5842947.1-5842947.13|共13页
  • 作者

    Xu Shi-Zhou; He Feng-You;

  • 作者单位

    China Univ Min & Technol, Dept Informat & Elect Engn, Xuzhou 221116, Peoples R China;

    China Univ Min & Technol, Dept Informat & Elect Engn, Xuzhou 221116, Peoples R China;

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