Starting Current The initial value of current drawn by a motor when it is started from standstill. 启动电流当发动机从停止状态启动时带来的初始电流值就是启动电流。
This method can not only control size of the starting current efficiently but also improve open-loop starting performance of BLDCM, so improve the reliability of the system. 该起动控制方法不但有能效控制起动电流大小,而且改善了BLD&CM开环起动性能,提高了系统的可靠性。
The wiring of the headlight system will need to be changed as a higher starting current is required for the HID lamps. 车灯的接线系统将需要改变,作为一个更高的起动电流所需的藏灯。
The new approach, which checks differential protection connection using electromotor starting current, is simple and reliable, and easy to be coordinated with installation schedule. 而利用电动机启动电流检验差动保护接线的新方法,简便可靠,容易与现场安装施工进度相协调。
The product's features are high starting torque, high slip and low starting current. 这产品的特点为起动转矩大、差率高和起动电流小。
Design D motors are featured with high starting torque, low starting current, multi-power output, it is suitable for oil field industry. 设计电机具有高起动转矩、低起动电流、多功率输出等特点,适用于油田行业。
A New Type of Ship with Low Starting Current Asynchronous Motor 一种新型舰用低起动电流异步电动机
The utility model ahs the advantages of low power consumption, small starting current, small vibration, small volume, simple structure, light weight, and convenience for carrying. 具有功耗、起动电流、振动和体积小,结构简单,重量轻,便于携带和使用寿命长等特点。
It can measuer maxi phase starting current and maxi working current online. 可在线查找三相最大的起动电流和最大运行电流。
In virtue of Fourier harmonic analysis, the air gap magnetic field corresponding to different conductivity in secondary conductive plane is divided into spatial fundamental waves and a series of harmonic waves, and the calculations of primary leakage reactance and starting current are given. 分析了次级为不同电导率材料时的气隙磁场,并采用傅里叶谐波方法将气隙磁场分解为空间基波和一系列谐波,相应给出了采用能量法对初级漏抗、起动电流的计算。
Measurement and Analysis of Starting Current for Electric Machine 电机启动电流的测试与分析
Choice Study of controlling transformer starting current and selection of fuse 控制变压器起动电流及熔断器选择的研究
The lubricant additive can decrease obviously starting current of engine and increase obviously cylinder pressure. 将纳米铜润滑油添加剂添加到汽车发动机润滑油中,可明显减小发动机的启动电流并明显增大汽缸压力。
By using soft starting, the starting voltage and starting current of asynchronous motor can be controlled, the impact on electric power system and load during the startup can be reduced, and also enables asynchronous motor to rotate steadily. 异步电动机的软起动可控制电动机的起动电压和电流,减少电动机起动过程对电网和负载的冲击,同时保证电动机运行平稳。
Traditional analysis method of signal is not efficient to nonstationary signal, such as motor starting current signal. 在电机起动过程中起动电流信号是非平稳信号,用传统的信号分析方法如傅里叶变换无能为力,不能有效地对信号的特性进行分析。
From the equation of Vlasov, the kinetic linear theory of diffraction radiation oscillator has been worked out in this dissertation, The formula of starting current was given and the effect of speed shift has been analyzed. 本文从伏拉索夫方程出发,应用动力学理论分析了绕射辐射振荡器的线性理论,得到了起动电流的表达式,分析了速度零散的影响。
This article describes the application of large marine motor and PTI motor on 3700 DWT product tanker and indicates how to consider the starting current effect of large motor on the voltage drop of electric net, two PTI motor starting control methods are introduced. 本文主要描述了大容量船用电动机及PTI电动机在3700t成品油船上的应用。介绍了如何考虑大容量电动机起动电流对电网压降的影响和PTI两种起动控制方式。
This paper mainly introduces the starting method, and the starting torque, starting current and starting time ( i.e.acceleration time) of the variable frequency adjustable speed induction motors. 主要介绍变频调速异步电动机的起动方式及涉及的起动转矩、起动电流和起动时间(或称加速时间)。
This dissertation deeply studies the transient models of distant short circuit fault currents for the dc rapid transit railway and presents a detailed analysis of the wavelet transforms to discriminate the remote short circuit current from the train starting current. 本文主要讨论了地铁直流侧远方短路故障电流的暂态过程,并利用小波变换作为分析工具对远方短路故障电流和机车起动电流进行了鉴别。
The paper analyses the relation of the starting-time and the multiple of starting current and voltage in the current-limited starting process of motor with different character load. 对电动机在不同性质的负载下,恒电流起动过程中起动时间与电压率、起动电流倍数的关系进行了理论分析。
Practice has showed that the deduced formulas of the starting current and torgue facilitate our work satisfactorily. 利用起动电流和起动转矩公式,在科学研究中我们可以获得满意的结果。
Through the detection of the stator current, the control can confine the starting current within the allowable range. 控制器通过监测电机定子电流的大小,将其起动电流控制在允许的范围内。
After the analysis of torque ripple and excessive starting current existed in the basic DTC system, the following improvements are made. 针对基本直接转矩控制系统低速运行时存在的转矩脉动、启动电流过大等问题进行了分析并做了如下改进。
The results show that the soft starter could start up smoothly and reliably, and the starting current of the asynchronous motor is controlled. 结果表明,该软起动器在软起动过程中,限制了电动机的起动电流,实现了电动机的平稳起动。
In the thesis, adverse effect on the grid and motor itself could be caused by the higher starting current when the AC motor starting. 论文针对交流电动机起动时产生的较大起动电流,可能对电网和其他设备以及电机本身造成不良影响的问题。
According to the zero-state current response of the RL series circuit, the starting current characteristics of the HTS LIM are analyzed. 根据一阶RL串联电路的电流零状态响应特性,分析研究了高温超导直线感应电机的起动电流特性。
The research showed: add permanent magnet couplers, motor starting current reduction. 研究表明:加入永磁磁力偶合器后,电机起动电流降低。
Discrete frequency-control soft starting technique that has the circuit of electronic soft starter modifies amplitude and frequency of voltage by controlling the power frequency half-wave in software, so it can meet the demand of starting current and torque. 离散变频软起动技术不改变电子软起动器的电路,在软件上对工频半波进行触发控制实现变压变频,在不提高成本的前提下满足了电机对起动电流和起动转矩的要求。
The main circuit of soft-starting is an ideal starting method adopting adjusting circuit constituted by three opposite-parallel thyristors, which can adjust the starting current and starting torque. 电动机软起动的主回路是采用三相反并联晶闸管构成的调压电路,可以调节起动电流和起动转矩,是一种理想的起动方式,而且通过电动机的软起动还可以达到节能的效果。
But, high starting current brings when asynchronous motors start up directly, which will take negative influence to electrical equipment and mechanism. 但异步电机直接起动时会产生很大的电流,对电网产生冲击和对电气设备产生不利影响。