The following disadvantages were revealed for hybrid diesel-electric propulsion complex (DEPC) under the influence of non-determined external disturbances: lack of coordination parameters of the medium-speed engines (MSE) with other components, leading to uneven regulation of magnetic flux and voltage amplitude, causing an additional increase of voltage pulsation in the output of converters and an emergence of equalization currents at synchronous operation; elevated levels of harmonics in the current of energy consumers; reduced reliability, efficiency, increased size and weight that occur through the use of high power elements and sets of equipment for them; no possibility of balancing three-phase system of power supply voltage with uneven loading of the phases. The impact of some disadvantages of hybrid DEPC operation has been reduced due to the determination of the ways of their modernization and use of criteria for improving energy processes through the integration of appropriate criteria of management strategies in the power distribution system. When using the classic PI control with adjustable level of ESS battery charge, power consumption by the consumers connected to the DC-link is decreased by 5 ÷ 7 % depending on the operating mode, and reactive power compensation is increased in the range of 2 ÷ 3 %. Control of frequency and MSE condition with adjustable degree of ESS battery charge for all other equal conditions allows to reduce the number or power of photovoltaic elements by 7 ÷ 10 % and management for criteria to obtain a maximum of alternative energy and control of the charge degree of ESS battery allows to use batteries of smaller capacity within 6 ÷ 8 %. The proposed approach ensured optimization of power for PVGS, CPU and ESS diesel and generating units for hybrid DEPC that in the future will lead to minimize investment and operating costs.