基于虚拟同步机的三相整流器直接功率控制

Direct Power Control of Three-phase Rectifier Based on Virtual Synchronous Machine

虚拟同步机(VSM)技术是一种将电力电子变换器按照同步电机的数学模型进行建模和控制的新兴电力电子控制技术。该技术能使电力电子设备具有一定的虚拟惯性与虚拟阻尼,从而表现出类似同步电机的运行特性。在此将VSM技术运用到三相整流器控制中,按照三相同步电动机的模型建模,采用直接功率控制方法对三相整流器输出功率进行有效控制。仿真和实验结果证明了研究方法的有效性。

The virtual synchronous machine (VSM) is a kind of emerging power electronic technology that models and controls the power electronic converter according to the mathematical model of the synchronous machine.The power electronic equipment will have a certain virtual inertia and virtual damping with VSM technology , and thus shows sim ilar characteristics of synchronous machines. The VSM technology is applied to a three -phase rectifier. After the model ing of a three-phase virtual synchronous motor, a direct power control method is used to achieve an effective control of the output power of the three-phase rectifier.Simulation and experimental results demonstrate the effectiveness of the control algorithm.