Development of an Experimental Sample of the Frequency Converter Filter for Operation in Ship Networks of Limited Power

Numerous distinct consumers with a non-linear load are employed in complicated energy systems. The majority of them are pricey, sophisticated technological gadgets. The non-linearity of these users' loads causes electromagnetic interference in the network, which impairs the proper functioning of such equipment. As a result of the impact of electromagnetic interference on the operation of complex technical equipment operating in large energy systems, negative consequences are manifested, such as deterioration in the quality of signals and power, reduction in their service life and various breakdowns. For frequency converters, the effect of electromagnetic interference on low-current control signals of power switches can lead to a short circuit and complete failure of the entire converter. To compensate for the influence of electromagnetic interference, it is necessary to apply their filtering. The creation of an algorithm for the operation of an active filter control system and the design and development of an experimental sample of an active filter for use in low-current frequency converter circuits are covered in this article. The control system under which the algorithm was developed is implemented on the STM32F411 microcontroller with an ARM Cortex-M4 core, as this will satisfy all the functional needs necessary to implement an active filter. The MatLAB software program was used to create the operating algorithm for this filter since this complex has extensive functionality, convenient conversion of the structural algorithm into C + code for its further loading into the microcontroller, and it is also possible to debug the operation algorithm in the Simulink simulation environment