三相电压型PWM变流器自然坐标准直接功率控制

发布时间：2018-01-15 05:13

本文关键词：三相电压型PWM变流器自然坐标准直接功率控制　出处：《广西大学学报(自然科学版)》2014年06期 　论文类型：期刊论文

【摘要】：为降低三相电压型PWM变流器直接功率控制系统复杂度,提出一种自然坐标(abc坐标)系下的准直接功率控制策略。该策略采用直接电流控制方式,根据自然坐标系下的瞬时功率理论,由功率给定值计算电流环的参考值,通过控制电流来间接控制功率。相比传统方法,所提控制策略在实现功率解耦控制的同时省去了电网相位检测和坐标变换,功率解耦各变量物理意义清晰明确、易于理解且PWM为定频调制方式。实验结果表明,所提策略可实现三相电压型PWM变流器功率解耦控制,并具有较好的鲁棒性能。
[Abstract]:In order to reduce the complexity of the direct power control system of three-phase voltage type PWM converter, this paper puts forward a natural coordinate (ABC coordinate) quasi direct power control strategy system. The strategy uses the direct current control method based on instantaneous power theory in natural coordinates, the calculation of current loop reference values given by the power, by controlling the current to control the power. Compared with the traditional method, the proposed control strategy to achieve power decoupling control and eliminating power grid phase detection and coordinate transformation, power decoupling each variable physical meaning is clear, easy to understand and PWM is a fixed frequency modulation. The experimental results show that the proposed strategy can realize three-phase voltage type PWM converter power decoupling control, and has better robust performance.

【作者单位】：广西大学电气工程学院;
【基金】：国家自然科学基金资助项目(61364027) 广西科学研究与技术开发项目(桂科攻1377001-2)
【分类号】：TM46
【正文快照】： 三相电压型脉宽调制(pulse width modulation,PWM)变流器以其可实现四象限运行、交流侧功率因数可控、交流侧电流正弦度好、直流侧可控等诸多优点,在交直流电气传动、有源电力滤波器(activepower filter,APF)、不间断电源(uninterruptable power supply,UPS)、静止同步补偿器(

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