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Ship electric propulsion system with harmonic suppressing and regenerative braking functions and control method

An electric propulsion and harmonic suppression technology, applied in ship propulsion, propulsion components, propulsion engine and other directions, can solve problems such as harmonic pollution, inability to realize braking energy feedback utilization, etc., to improve power quality and energy utilization. , The effect of solving the problem of harmonic pollution

Active Publication Date: 2016-06-01
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a ship electric propulsion system with harmonic suppression and feedback braking functions in view of the serious harmonic pollution and the inability to realize the feedback and utilization of braking energy in existing electric propulsion ships and control method, especially suitable for electric propulsion ships to improve the power quality and energy utilization of ship power grid

Method used

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  • Ship electric propulsion system with harmonic suppressing and regenerative braking functions and control method
  • Ship electric propulsion system with harmonic suppressing and regenerative braking functions and control method
  • Ship electric propulsion system with harmonic suppressing and regenerative braking functions and control method

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Embodiment 1

[0041] Embodiment 1. Ship electric propulsion system with harmonic suppression and regenerative braking functions

[0042] The structure of the marine electric propulsion system with harmonic suppression and regenerative braking functions is as follows: figure 1 As shown, it is mainly composed of IGCT control and drive system, signal acquisition and control system connected with IGCT control and drive system, composite energy storage system, bidirectional inverter rectification system, among which: signal acquisition and control system and ship power grid and motor Connected, used for real-time detection of the operating status of the ship's power grid and the motor; the bidirectional inverter rectifier system is connected to the ship's power grid and the motor, and is installed between the ship's power grid and the motor; the composite energy storage system is connected to the bidirectional inverter rectifier system, It is used to recover the energy when the ship brakes and s...

Embodiment 2

[0048] Embodiment 2. Control method of ship electric propulsion system with harmonic suppression and regenerative braking functions

[0049] The control method of the ship electric propulsion system includes the following control methods and strategies:

[0050] 1. Control method for harmonic suppression of ship electric propulsion system:

[0051] The harmonic suppression control method of the marine electric propulsion system is an active harmonic suppression method. The source of the harmonics generated by the ship electric propulsion system is mainly the rectification link and the inverter link. In order to suppress the harmonics from the source, the present invention proposes to adopt a three-level SVPWM rectification control method based on virtual flux linkage orientation in the rectification link. The link adopts the three-level SVPWM inverter control method based on the rotor field orientation.

[0052] The control logic block diagram of the virtual flux linkage ori...

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Abstract

The invention relates to the field of ship electric propulsion, in particular to a ship electric propulsion system with harmonic suppressing and regenerative braking functions and a control method. The system is mainly composed of an IGCT control and drive system, a signal acquisition and control system, a composite energy storage system and a two-way inversion rectification system installed between a motor and a ship power grid. A double-three-level diode clamp type topological structure is adopted in the two-way inversion rectification system in the ship electric propulsion system, the SVPWM control technology is selected in the control method, and therefore the harmonic suppressing and regenerative braking functions are achieved. The composite energy storage system in the ship electric propulsion system can be used for absorbing energy generated in the ship braking process, can also be used for leveling fluctuations of the ship power grid and has the ship power grid stabilizing effect. The ship electric propulsion system has the important application value for improving the electric energy quality of the ship power grid and increasing the energy use rate.

Description

technical field [0001] The invention relates to the field of ship electric propulsion, in particular to a ship electric propulsion system and control method with harmonic suppression and feedback braking functions. Background technique [0002] The ship electric propulsion system has the advantages of flexible operation, good maneuverability, small vibration, and is conducive to the control of environmental pollution of the ship, which are not available in the traditional propulsion system. Ship electric propulsion system has become the key research and development object of today's ship industry. Developed countries are also vigorously developing and applying electric propulsion technology to the next generation of new warships and have made significant progress. [0003] The ship power grid is a typical independent power supply system. Due to the limited power generation capacity, the anti-interference ability to nonlinear loads is relatively poor. Especially with the wide...

Claims

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Application Information

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IPC IPC(8): B63H21/17B63H21/21
CPCB63H21/17B63H21/21B63H2021/216
Inventor 杨祥国田畾陶烽伟杨诚管聪丰浩宇
Owner WUHAN UNIV OF TECH
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