Dual-Mode Double-Carrier-Based Sinusoidal Pulse Width Modulation Inverter With Adaptive Smooth Transition Control Between Modes
Dual-Mode Double-Carrier-Based Sinusoidal Pulse Width Modulation Inverter With Adaptive Smooth Transition Control Between Modes
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DOI：
10.1109/tie.2012.2227900
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发表时间：
2013-05
影响因子：
7.7
通讯作者：
Zheng Zhao;J. Lai;Younghoon Cho
中科院分区：
文献类型：
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作者：
Zheng Zhao;J. Lai;Younghoon Cho
提出了三种具有平滑过渡的双模式升压-降压型逆变器：1）升压-全桥逆变器; 2）升压-H5逆变器; 3）升压-双降压逆变器。对于相同的拓扑结构，在传统的控制方法中，第一级需要将输入电压升压到恒定的高压，第二级用于正弦逆变。然而，在所提出的三个逆变器中，降压或升压模式在单个时间工作，因此，只有一个开关在高开关频率下工作。以这种方式，可以减少大量的开关损耗，并且此外，由于中间电容器两端的电压小于传统的恒定高压，因此可以进一步减轻开关损耗。为了实现两种模式之间的平滑过渡，提出了一种基于双载波的正弦脉宽调制（SPWM）。除此之外，还提出了三种先进的调制方法：1）具有不同频率的双载波; 2）具有不同幅度的双载波;以及3）具有不同频率和幅度的双载波。在此基础上，给出了各元件的损耗分布，并比较了不同输入电压条件下这几种逆变器的加州能源委员会效率。实验结果表明，基于双载波的双模式SPWM逆变器比传统的恒直流母线电压逆变器的效率提高了2%。
Three dual-mode boost-buck-derived inverters with smooth transition between modes have been proposed: 1) boost-full bridge inverter; 2) boost-H5 inverter; 3) boost-dual buck inverter. For the same topologies, in conventional control method, the first stage is needed to boost input voltage to a constant high voltage, and the second stage is for sinusoidal inverting. However, in the proposed three inverters, either buck or boost mode works at a single time, thus, only one switch works at a high switching frequency. In this way, a lot switching loss can be reduced, and moreover, since the voltage across the middle capacitor is smaller than the conventional constant high voltage, the further switching loss mitigation is possible. In order to achieve smooth transition between the two modes, a double-carrier-based sinusoidal pulse width modulation (SPWM) is proposed. Other than this, three advanced modulation methods are proposed: 1) double-carrier with different frequencies; 2) double-carrier with different magnitudes; and 3) double-carrier with different frequencies and magnitudes. Following that, the loss distribution in every component is provided and the California Energy Commission efficiency of these inverters under different input voltage conditions is compared. Finally, the experimental results show the dual-mode double-carrier-based SPWM inverter can improve the efficiency by 2% than the traditional constant dc bus voltage solutions.