摘要
该文中使用了一种单相中点箝位电压源型三电平电力电子变换器，作为分布式发电里，直流微网中直流母线和电网交换有功无功功率或者交流微网中交直流功率转换之用。相比于用在并网情况下的传统变换器，该变换器可以减小输出电流的谐波含量。同时，三电平变换器桥臂中开关管的电压应力可以减小为输入电压的一半。笔者针对该变换器的SPWM调制策略，提出了并网控制策略。通过仿真，验证了该变换器的优点和控制策略的有效性。
According to the requirement of power converting between DC bus and AC bus in micro grid, power many kinds of electronic converters are used.A single -phase neutral -point-clamped （NPC）three -Level （TL ） voltage source converter and its control scheme are proposed for this Grid -connected Power Conditioner.Comparing with the traditional converters,the proposed converter reduces the harmonic current greatly and the voltage stress on the switches of the TL leg can be reduced to half of the input voltage.According to SPWM modulation strategy of this converter,control scheme are proposed.Simulation results prove the effectiveness of Single-phase three-level grid-connected power conditioner with propose control scheme.
出处
《山东师范大学学报（自然科学版）》
CAS
2014年第3期50-53,共4页
Journal of Shandong Normal University(Natural Science)
关键词
电力电子变换器
微网
并网
三电平
power electronic converter
micro grid
grid-connected
three-level
