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High performance direct instantaneous power control of PWM rectifiers

机译：PWM整流器的高性能直接瞬时功率控制

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摘要

This paper presents a new direct instantaneous power control (DPC) strategy for active rectifiers. In this novel scheme the PWM modulator has been utilized instead of the hysteresis comparators and switching table. The required converter voltage in each sampling period is directly calculated based on the reference and measured values of powers, system parameters, and the measured voltage of the AC source through simple equations which are wisely compensated for variations of the grid voltage during a sampling period. Then, the PWM generator generates the switching pulses for the voltage source converter. It is shown that the proposed DPC-PWM exhibits several features, such as a simple algorithm, constant switching frequency, robust to sampling frequency changes, robust to inductance values mismatch, and particularly it provides low sampling frequency. Extensive simulation and experimental results have proven the excellent performance and verify the validity and effectiveness of the proposed instantaneous power control scheme.
机译：本文提出了一种用于有源整流器的新的直接瞬时功率控制（DPC）策略。在这种新颖的方案中，已利用PWM调制器代替了磁滞比较器和开关表。根据功率的参考值和测量值，系统参数以及交流电源的测量电压，可以通过简单的方程式直接计算每个采样周期中所需的转换器电压，这些方程式会针对采样周期中电网电压的变化进行合理补偿。然后，PWM发生器为电压源转换器生成开关脉冲。结果表明，提出的DPC-PWM具有简单的算法，恒定的开关频率，对采样频率变化的鲁棒性，对电感值失配的鲁棒性等特点，特别是提供了低采样频率。大量的仿真和实验结果证明了其优异的性能，并验证了所提出的瞬时功率控制方案的有效性和有效性。

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