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Development of a Shaft Generator System without Output Voltage Distortion

无输出电压失真的轴带发电机系统的开发

基本信息

批准号：
12650293
负责人：
NISHIKATA Shoji
金额：
$ 2.3万
依托单位：
Tokyo Denki University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650293/
关键词：
Ships Generating System Shaft Generator System Voltage Distortion Harmonics Elimination Duplex Reactor Transient Performance Analysis Frequency and Voltage Control 直列共振コンデンサ

项目摘要

A shaft generator system feeds sufficient power to the electric apparatus in a ship by using a part of the power produced by the main engine. Conventional type of such system has a drawback of involving a large amount of harmonics in the output voltage waveform. A novel and simple shaft generator system without output voltage distortion is introduced in this research. The proposed system is equipped with a duplex reactor to cancel out the subtransient inductance of the synchronous compensator. The steady-state characteristics of the system are then discussed, and it is shown that when the duplex reactor is used, the inverter dc input voltage and synchronous compensator terminal voltage should be increased for a larger system output to keep the output terminal voltage constant. A simple method of suppressing the increase in these voltages is also proposed. The effectiveness of the proposed system was confirmed with the experimental investigations. Dynamic model of the shaft generator system is also developed. Based on the equivalent circuit of the system a set of transient equations is derived first, and a block diagram representation of the equations is then obtained. It is shown that the dynamic model can be expressed by 5th order non-linear system. Transient responses of the system in the case of a step-up change in the dc input voltage are simulated and compared with experimental ones. Finally, dynamic performances of control systems for constant frequency and constant output voltage of the shaft generator system without output voltage distortion are analyzed. The transient performances when load is changed are discussed and compared for two types of closed-loop control systems, and the effects of the duplex reactor as well as the controller constants in the system on the transient performances are clarified.

轴带发电机系统利用主机产生的部分电力为船舶内的电气设备提供足够的电力。传统类型的此类系统的缺点是输出电压波形中包含大量谐波。本研究介绍了一种新颖、简单、无输出电压畸变的轴带发电机系统。所提出的系统配备了双工电抗器来消除同步补偿器的次瞬态电感。然后讨论了系统的稳态特性，结果表明，当使用双电抗器时，对于较大的系统输出，应增加逆变器直流输入电压和同步补偿器端电压，以保持输出端电压恒定。还提出了一种抑制这些电压增加的简单方法。实验研究证实了所提出系统的有效性。还开发了轴带发电机系统的动态模型。基于系统的等效电路，首先导出一组瞬态方程，然后获得方程的框图表示。结果表明，动力学模型可以用五阶非线性系统来表示。模拟了直流输入电压升压变化时系统的瞬态响应，并与实验结果进行了比较。最后，分析了轴带发电机系统恒频率、恒输出电压且输出电压不畸变的控制系统的动态性能。讨论并比较了两种闭环控制系统在负载变化时的暂态性能，明确了双联电抗器以及系统中的控制器常数对暂态性能的影响。