Experimental Study on Maneuvering Characteristics of Electric Propulsion Ships
Experimental study on the maneuvering characteristics of China's ship repairing electric propulsion ship in the 6th Lang in 2000. Odessa Maritime University Dalian Maritime University Fan Yinhai Electric Power Co., Ltd. installed 1 propulsion motor and other time-changing thief law and ship Ming, type = Guanjian word ship Experimental study; electric propulsion In order to analyze the maneuvering state of an electric propulsion ship power plant, a mathematical model describing its transition process is assumed. This mathematical model contains all the links and components of the electric propulsion ship as a whole. With this mathematical model, it is possible to calculate the time-varying gauges of the propulsion motor, such as the power plant generator force conversion device, and the seed preparation parameters of the ship motion. However, the best way to prove the practicality and correctness of a mathematical model is the actual ship test, for this purpose. We carried out a real ship maneuver test on the No. 21 rescue boat. The ship has a single ship power station and the electric propulsion is placed in an AC and DC system. Its basic technical characteristics are as follows: 7.518, the effective thrust of the propeller is 539, and the displacement is 4,500. Speed ​​25.200600; number of units 2; power 2200 tear, effective power 165 grab battery 600. Current 75 people; power factor 0.8; number of revolutions 251.3; excitation current 145; excitation voltage 300. The ship is equipped with the automatic control system of the computer and the navigation system jtGES NavstarGLOBALPzitioniSystan. Its detector instrument connection box 1. The 1 is the control center, and its subsystems are all the sensors of the different navigation system under the control system. And the ship track automatic display device, the ship pilot instrument is used to ensure that the ship moves according to the given control law, and the automatic recorder records the information obtained by the test to the disk continuously as a recording instrument, so that the following equipment 16 is a light tracker. 528, record the working state index value obtained by the detection; 18 is a memory; 2 is a dual channel receiver, used to transmit the satellite signal to the control center, the latitude and longitude time, and the speed of the ship; 3 is an explicit display, and the ship's heading speed is continuously displayed. The water flow speed, etc. 19 is a printing device. In order to detect the Ding status indicator, the instrument uses 4 4 diesel engine speed sensing, 5.5 diesel engine work, sensor 66 main generator voltage sensor; 77 main generator current transmission Chinese ship repair excitation magnetic voltage sensor; 1010 propulsion motor armature current sensor; 1 push the machine. 1 current sensor; 1212 vertebral motor excitation current sensor; 1313 propulsion motor excitation voltage sensor; 1414 propulsion motor speed sensor; 1515 and 16 rudder angle sensor. According to the technical data index of the testing instrument, the degree of the field of view is 10, the latitude and longitude is 10, the speed of the ship is 0.1; the speed is 0.015; the accuracy of the track is 0.1. During the on-site test, several maneuvers tests were carried out on ships of this type. According to the proposed task, these maneuvers are carried out on a computer by means of a mathematical model of the transition process. Compare the experimental data with the theoretically calculated data. This test scheme compares the complex power into the ship and accelerates to a certain set speed. With the help of the yaw and the propeller, the ship is initially biased, 60, then 3 Brake and stop the ship from moving. This maneuvering test was carried out several times. The variation rule of the obtained state index is a random function, and the data processing is performed as follows. 1. Calculate the error of the selected test curve point by calculating the mathematical period of the state index of the juice at time 4, iM.=aa, and then calculate the root mean square of the error. The error of the boundary measurement result of the credibility interval is obtained for the reliability coefficient given value and the number of repeated tests. In the case of the friend 1 to the mountain, the state index changes according to the method. In order to facilitate analysis and comparison, the test of the state index changes with time and is converted into a relative value. It has been taken as the corresponding value when the ship is sailing straight in rated deep power in the deep water. The dimensionless time is as follows: Captain L; t time. Comparing the test curve with the calculated results of the mathematical model, the experimental values ​​are close enough to the theoretical calculations. The theoretical calculation value is the maximum deviation of the value of 1 for the cutting machine speed 3.5, the current and voltage of the busbar is 13; the current of the propulsion motor is 18; the speed of the ship is 4.3; the yaw angle of the ship is as a whole, The deviation of the state indicator change law is 3 13. The deviation of the motor armature current value is relatively 18, which occurs in the initial stage of the transition process, which may be caused by the adjustment function of the automatic regulation system. The indicator is like this. The actual 1 verification proves the desirability of mathematical casting, and it also proves that it is feasible to calculate the power-mounted maneuvering state of the electric propulsion ship. , Received date 2,06 ★ Advertising information Female Chongqing Changjiang Painting Machinery Factory Changjiang Painting Chongqing Changjiang Painting Machinery Factory is located in the Yangtze River Gorge Reservoir Area. It is a military enterprise directly under the China Shipbuilding Industry Corporation and a high-tech enterprise in Chongqing. It has a high-level scientific and technological team including national experts, advanced and perfect processing and testing technology and equipment. 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