System Health Monitoring System Implementation: A Fact System

In this study, a novel online health monitoring method for modular multilevel conversions DC capacitors is introduced. The primary objective of the fundamental health monitoring algorithm is to detect changes in the DC resistivity value over time. Interestingly, the suggested technique only uses measurements that are often seen in high-voltage straight-current applications and flexible electrical transmission systems. As a result, our estimating approach does not use any additional sensors. Noise in current or voltage measurements is taken into consideration in the estimating technique. To successfully decrease estimate errors, it uses a specific low-pass filter in combination with a recursive least squares estimator. Based on actual data from an inexpensively MMC prototype and simulation results from a hardware replica, it is clear that the suggested approach can accurately determine the DC-link capacitance amount with an approximate error of 1%.