Simulation Analysis and Experimental Verification of the Electrical Energy Power System for Underwater Vehicles

doi:10.12382/bgxb.2022.0198

Abstract

Abstract:

The complexity of the electromagnetic and electromechanical coupling relationships in the Electrical Energy Power System (EEPS) poses challenges for analytical studies. To address the challenges, this paper focuses on the EEPS of future generation vessels with a cascade AC-DC-AC topology. A mathematical model for the EEPS is derived, and a parameter extraction method is provided. The complexity-accuracy relationship of each component model has been fully considered to meet the needs of real-time simulation. An electromechanical integration simulation model is constructed with a set of diesel engine and a controller, PMSM, converter, propeller, and vessel as a whole. Simulation studies of typical working conditions are carried out respectively, and the simulation results are compared with the results of ground experiment and real cruising test of the EEPS with an underwater vehicle. A good agreement between simulation model and the real EEPS has been verified by the test results. Based on the simulation platform built in this paper, the time of bench test and real cruising verification can be shortened, and the R&D costs of the EEPS can be reduced significantly.

Key words: underwater vehicle, electrical energy power system, electromechanical integration simulation platform, parameter extraction, real cruising test

ZHANG Jian, SHEN Lin. Simulation Analysis and Experimental Verification of the Electrical Energy Power System for Underwater Vehicles[J]. Acta Armamentarii, 2023, 44(7): 2101-2113.

Figures/Tables 20

Fig.1 A typical EEPS for underwater vehicles

Fig.2 Schematic diagram of a diesel engine with a speed control system

Fig.3 Control diagram of a throttle actuator for a diesel engine

Table 1 Parameters of the diesel generator set

参数	取值
柴油机本体	8缸/四冲程船用柴油机
发电机本体	400kW/PMSM
机组额定转速/(r·min^-1)	2200
机组额定转矩/(N·m)	1758

Fig.4 Control diagram of a diesel engine set

Fig.5 Speed response of a diesel engine set under external torque

Fig.6 Diagram of a diesel engine and its controller

Fig.7 Speed response with different speed controllers

Fig.8 Simulation and experimental comparison of speed responses during the starting process

Fig.9 Simulation and experimental comparison of speed responses during sudden-decreased load conditions

Fig.10 Control diagram of PMSM with d, q axis frame

Fig.11 The integrated model of an underwater vehicle together with its propeller propulsion system

Fig.12 Torque characteristics under typical navigation conditions

Fig.13 Digital simulation platform of the EEPS for underwater vehicles

Fig.14 The startup and load variation process of the underwater vehicle with ramp command setting

Fig.15 The startup and load variation process of the underwater vehicle with step command setting

Fig.16 Photo of the EEPS together with the underwater vehicle

Fig.17 DC side voltage response characteristics in a sudden-added load operation test

Fig.18 Speed andDC side voltage response characteristics in a sudden-decreased load operation test

Fig.19 Speed and torque characteristics of the electric propulsion subsystem

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