Indirect type matrix control system for electricity-oil hybrid energy conversion electric driving ship

Abstract

The invention relates to an indirect type matrix control system for an electricity-oil hybrid energy conversion electric driving ship. A three-phase alternating current diesel generating set is connected with an input end AC / DC converter of an indirect type matrix converter, a three-phase alternating current propulsion motor is connected with an output end DC / AC converter of the indirect type matrix converter, a virtual direct current link clamping circuit of the indirect type matrix converter is connected with a both-way PWM switch, the both-way PWM switch is connected with a power storage battery pack, a switch commutation controller is connected with switch control circuits of the input end AC / DC converter and the output end DC / AC converter of the indirect type matrix converter, a direct torque control frequency converter is connected with the switch commutation controller, the three-phase alternating current diesel generating set, the three-phase alternating current propulsion motor and a speed sensor, and a charger is connected with the power storage battery pack. By means of the indirect type matrix control system, efficient connection and parallel operation of alternating currents and direct currents can be achieved, and efficient and energy-saving frequency-conversion stepless speed-regulation control over the propulsion motor can be achieved.

Description

technical field [0001] The invention relates to a power source combination and propulsion control system for a multi-energy electric ship, in particular to an indirect matrix control system for an electric-oil hybrid energy conversion electric-driven ship, that is, a generator set and a power storage battery set that uses shore power are used in phase Combined electric-oil hybrid energy all-electric ship, indirect matrix control power station system with direct parallel operation of AC and DC power supplies, and a propulsion control system using a combined control strategy combining indirect matrix converter and direct torque frequency conversion control An indirect matrix control system formed by superposition. Background technique [0002] Hybrid electric vehicles have the advantages of environmental protection, energy saving and large mileage. Hybrid electric ships have the same characteristics and special uses, such as scientific survey ships, specifically a ship that f...

AI Technical Summary

Problems solved by technology

Obviously, the use of thermal engine propulsion and generator set power supply can not achieve the purpose of silence, and the battery electric ship lacks a large endurance, only the electric oil hybrid all-electric ship can achieve its dual goals

Electric propulsion has positioning navigation and low-speed performance, and can use batteries to work in measurement conditions, while using noisy generator sets for other conditions, so that it can take into account the dual requirements of quiet measurement environment and long endurance. Shore power, ship power can also be used, although the efficiency of the latter is lower, but the measurement time is not long, and the quiet environment becomes the main contradiction, and the dual technical purpose can be achieved

[0003] However, the difficulty lies in the fact that the diesel generator set that uses fuel as the energy source in the hybrid energy source is alternating current, because the alternating current of the generator is a mature amphibious power generation technology, while the battery is direct current, how to match and control the two? Obviously, the AC-DC-AC method of rectifying AC to DC and then converting to AC is a working mode. However, since the control process must pass through the rectification and filtering link, the DC link requires a large energy storage inductor or capacitor and consumes high energy. and larger

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