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The purpose – marketing research of the national antiarrhythmic drugs market.Materials and methods. The State Register of Medicinal Products of Ukraine and Compendium-2019 were used as the research materials. Methods of system, marketing, statistical and content analysis. Results. The analysis of the range of antiarrhythmic drugs was conducted according to such criteria as composition, release form and originality. It showed the heterogeneity of this segment of Ukrainian pharmaceutical market. Thus, solid and liquid dosage forms, both original and generic could be found in the market. The analysis of the company structure of the studied market segment allowed to establish, that domestic pharmaceutical companies supply only 48 % of drugs (13 dosage forms) for this market segment, while foreign pharmaceutical companies prevail (52 %). In this connection, the development of new medicinal products of the specified activity and the mastering of their production on the territory of Ukraine is relevant. The calculated tension coefficient showed that the highest competition is observed among manufacturers of analog preparations containing amiodarone hydrochloride (Кvi = 0.93). Also, the specific weight of each of the manufacturers of antiarrhythmic drugs was calculated and it was established, that (LLC) Pharmaceutical Company Zdorovye has the largest share (dij = 0.1481).Conclusions. Conducted marketing studies of the range of the national antiarrhythmic drugs market showed the heterogeneity of this segment in terms of dosage forms and originality of drugs. The analysis of the company structure has established a high level of competition among the leading foreign pharmaceutical companies, whose share is 52 %. The coefficient of tension and the share of the segment, of each manufacturers of antiarrhythmic drugs, was calculated.

Introduction. At present, the most important requirement in the field of electrical engineering is the better utilization of electrical power, due to its increasing demand and not-so-increasing availability. A permanent magnet synchronous motor (PMSM) is increasingly gaining popularity in various household and industrial applications because of its superior performance compared to conventional electrical motors. Purpose. PMSM is designed based on the selection of various design variables and optimized to fulfill the same. Being superiorly advantageous over other motors, PMSM has the major disadvantage of higher cogging torque. Higher cogging torque generates torque ripple in the PMSM motor leading to various problems like vibration, rotor stress, and noisy operation during starting and steady state. The designer should aim to reduce the cogging torque at the design stage itself for overall better performance. Methods. An interior rotor v-shaped web-type PMSM is designed and its performance analysis is carried out using finite element analysis (FEA). Magnet v-angle is optimized with the objective of cogging torque reduction. Performance comparison is carried out between the optimized motor and the initially designed motor with FEA. Novelty. Magnet v-angle analysis is performed on the same keeping all other parameters constant, to obtain minimum cogging torque. The proposed method is practically viable as it does not incur extra costs and manufacturing complexity. Practical value. It is observed that the magnet v-angle is an effective technique in the reduction of cogging torque. Cogging torque is reduced from 0.554 N×m to 0.452 N×m with the application of the magnet v-angle optimization technique.