三相PWM整流器直接功率控制的自适应反推控制设计
Design of Adaptive Backstepping Control for Direct Power Control of Three-Phase PWM Rectifier)
摘要：
本文重点研究了用于三相PWM整流器直接功率控制（DPC）的自适应反推控制器（adaptive-BSC）的设计。在所提出的系统中，期望通过使整流器的输出DC电压和无功功率跟踪期望的相应值来同时控制整流器的输出DC电压和无功功率。这是通过具有用于输出电压和无功功率的独立虚拟控制信号来实现的。从三相系统的动力学方程中得到自适应控制信号。为了比较，BSC和自适应BSC方程都被开发。在一个5 kW的系统上对它们进行了数值模拟。所提出的自适应BSC的设计工作在更具挑战性的系统变化相比，BSC，因为它必须估计的值的未知系统负载。尽管如此，它的表现仍然优于其BSC对手。
英文摘要：
In this paper, we focused on the design of an adaptive backstepping controller (adaptive-BSC) for direct power control (DPC) of a three-phase PWM rectifier. In the proposed system, it is desired to control both the output DC voltage of the rectifier and the reactive power simultaneously by making them track desired respective values. This was done by having independent virtual control signals for both the output voltage and the reactive power. The adaptive control signals were gotten from the dynamic equations of the three-phase system. For comparison, both the BSC and adaptive-BSC equations were developed. Numerical simulations were performed on both of them on a 5kW system. The proposed adaptive-BSC was designed to work under more challenging system variations as compared with the BSC as it has to estimate the value of the unknown system load. Despite this, it still performed better than its BSC counterpart.
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