Design of a Grid-Forming Inverter Experimental Platform with High-Precision Power Decoupling

In response to the demand for quality talents in new electricity systems under the twin goals of carbon peak and carbon neutrality, this paper designs and implements a comprehensive experimental platform for grid-forming inverters. Centered around the GFM inverter, the platform offers multiple functions including grid interaction simulation, power control, and fault protection. It supports experiments such as islanded operation, power reference tracking, and power droop control. The platform adopts a collaborative control architecture of a digital signal processor (DSP) and a field-programmable gate array (FPGA), which combines high reliability with exceptional flexibility. By employing a power decoupling strategy based on high-precision phase angle measurement, the system effectively suppresses the coupling between active and reactive power, thereby significantly enhancing the system’s dynamic response performance. This platform is applicable to undergraduate laboratory teaching, providing a vital experimental foundation for cultivating talents for the new power system. Furthermore, its excellent scalability and openness allow it to serve scientific research projects and industry initiatives.