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Abstract With a large number of film capacitors being deployed in critical locations in electrical and electronic systems, artificial intelligence (AI) technology is also expected to address the problems encountered in this process. According to our findings, AI applications can cover the entire lifecycle of film capacitors. However, the AI safety hazards in these applications have not received the attention they deserve. To meet this, the authors argue, with specific examples, risks that flawed, erratic, and unethical AI can introduce in the design, operation, and evaluation of film capacitors. Human‐AI common impact and more multi‐dimensional evaluation for AI are proposed to better cope with unknown, ambiguity, and known risks brought from AI in film capacitors now and in the future.

Abstract Film capacitors are playing an increasingly important role in power‐related fields, driven by the continuous development of dielectric materials and practical needs. Long‐term accumulation has also led to an increasing wealth of data related to film capacitors. Sonification opens up a new way for people to make good use of data from film capacitors. A framework for sonifying film capacitors data based on TwoTone is presented. Based on the analysis and discussion, it is clear that the sonification results can easily represent the monotonic variation pattern of film capacitors data. What's more, the sonification results increase the possibility that people pay attention to the changing trend of film capacitors data when there is no significant difference in the visual perception of the data. In addition to providing a new way of music generation of electrical equipment, the method proposed is expected to contribute to theory reference in typical scenarios, such as factory calibration of film capacitors, monitoring of film capacitor operation status, and presentation of statistical data of film capacitors' dielectric materials, which will help us to better understand the distribution characteristics of polymer films.

With the emergence of power electronic technology and advancements in highly efficient electric power converters, DC-DC converters play a significant role in DC networks and DC distribution systems. Not being fully understood, nevertheless, the stability, protection and safety of DC systems present an open challenge for the research community. In this study, a high quality low voltage DC distribution system has been proposed, which provides a constant power in the event of voltage disturbance (sag), fluctuations, and fault. A three wire line system is adopted: +375 V line, neutral and -375 V line. Furthermore, the required DC power is transformed from DC or AC voltages by using load side converters, and these power converters do not need any transformers to adopt the proper DC voltage. In this research work double-closed-loop control strategy, the outer voltage control loop and inner current loop (decoupled without the exact value of boost inductance) are proposed. If short circuit or any fault occurs on the load side, the proposed strategy prevents the effect of remaining load. Also, the grid reconnection and disconnection is very smooth. Furthermore, a voltage balancer is proposed near to low voltage side. To confirm the effectiveness of the suggested control topology, simulations are performed in Matlab/Simulink and PSCAD software. The results obtained from simulation show that the suggested control system topology can provide excellent power in various conditions.

A control topology input-parallel–output-series converter system is investigated, which is suitable for high-voltage and high-output power applications. In this control method input current sharing (ICS) and output current sharing (OVS) taken into account. As observed, ICS is automatically attained as OVS sharing is controlled. In this design, two modules are connected in series, Module 1 provided variable voltage but in Module 2 by using three-level neutral-point-clamped converter and designing a comprehensive control feedback system, which regulates the DC voltages at the constant magnitude and constant frequency, helps to provide constant output voltages in the event of uncertain disturbance and load variation, A feedback double closed-loop control topology (inner current loop control and outer voltage loop control) with the combination of sliding mode control and a proportional–integral control method. A simulation model is built, by using MATLAB/Simulink, and the simulation results show excellent performance and feasibility of this system. This will be beneficial for research and improvement for the grid-connected converter.