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Abstract
This paper investigates the energy balance of a closed motor–generator electromechanical system with a common DC link used for testing electric motors under real operating conditions. It is shown that the DC bus is a critical source of energy losses caused by power flow mismatch, current ripple, and parasitic couplings. An analytical loss model is proposed that accounts for cable and capacitor losses, additional losses due to higher harmonics, and inverter switching losses. Methods for reducing losses, including optimization of power cable configuration, application of filter-compensating devices, and adaptive control of the PWM carrier frequency, are presented. Computational experiments demonstrate an 11–14% reduction in total energy losses under rated operating conditions of the testing complex. Recommendations for the design of energy-efficient motor testing benches are formulated.
References
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Copyright (c) 2026 Цветков, А.Н., Шавалеев, Р.Р. (Автор)