铁基纳米晶逆变变压器磁芯其具有高饱和磁感应强度,效率高,激磁功率小,损耗低,良好的温度稳定性。
Fe-based nanocrystalline core transformer inverter which has a high saturation magnetic flux density, high efficiency, small excitation power, low loss, good temperature stability.
设计出传感器输入输出信号调理电路和试验台架液压激振系统、磁流变阻尼器控制器的功率放大电路。
Design the signal adjust circuit for sensor, and the power amplification circuit for the hydraulic pressure system of test platform and the controller of magnetorheological dampers.
而不同容量的负载,以及负载的不同功率因数,对同步发电机励磁磁场的作用是不同的,对同步发电机的内部阻抗压降的作用也是不一样的。
The effect on the generator excitation magnetic field is different when the capacity and power factor of load are different, and the effect on the internal impedance voltage drop is different, too.
阐述了模型参考诊断方法在励磁系统功率单元的具体应用。
The application of the model based fault diagnosis to the power unit of an excitation control system is described.
获得非线性色散关系,揭示了传播功率致使静磁表面波频带压缩。
The nonlinear dispersion relation shows that a high wave power results in a reduction of frequency band of MSSW.
专业生产小型继电器,功率继电器,磁保持继电器,汽车继电器,时间继电器,固态继电器,计数器,继电器,传感器。
Professional production of small relays, power relays, magnetic latching relay, automotive relay, time relay, solid state relays, counters, relay sockets, sensors.
得出磁滞损耗功率与频率、磁通密度及温度的经验公式。
An empirical formula describing the dependence of the power of hysteresis loss on frequency, magnetic flux density and temperature was derived.
根据无刷双馈电机的特性,采用磁链定向的矢量变换控制技术设计了一种新型功率控制系统。
According to the characteristics of brushless doubly-fed wind turbine and adopting flux linkage oriented vector transformation control technology, a new type of power control system is developed.
但是它的一个固有缺陷是功率晶体管截止期间变压器必须磁复位,因而需要采用附加的复位电路。
One inherent limitation of the forward converter is that the transformer must be reset during the power transistor off period. Thus, additional reset circuitry has to be used.
变压器式可控电抗器与磁饱和式可控电抗器相比,谐波电流更小、响应速度更快、功率损耗更小。
Compared with the magnetic valve type controlled shunt reactor, the transformer type controlled shunt reactor is superior in its smaller harmonic current, faster respond speed and less power loss.
同时传送功率和信息是电流互感器正常工作的必要条件,也是产生磁误差的基本原因。
To transfer power and information simultaneously is the necessary condition which enables current transformers to work normally, but is also the basic cause of producing magnetic errors.
使用合适的功率放大器驱动激励线圈,是实现基于磁致伸缩效应无损检测技术的关键环节。
It is important to apply a suitable power amplifier to drive the transmitting coil in magnetostrictive nondestructive testing (NDT).
在全速范围内分段进行恒磁通和恒电压恒功率控制,得到控制下的转矩—转速特性曲线。
Full speed within sections of constant flux and constant voltage constant power control, we can get the torque - speed characteristics under the control.
建立了基于变换器励磁的双馈感应电机的变速恒频风力发电功率控制系统的模型。
A variable speed constant frequency wind power generation system of doubly-fed induction generator based on converter excitation was described.
为了实现开关磁阻电机(SRM)绕组电流或磁链的精确控制,必须提高SR M功率变换器的工作频率以提高系统的动态响应速度。
To achieve the precision control of phase current or phase flux linkage in switched reluctance motor (SRM), the higher switching frequency of converter is required to increase dynamic response speed.
本文还提出一种强化励磁的控制方案,以解决低压小功率开关磁阻发电系统在高速状态下功率输出较低的问题;
The electronic controller, which controlled by DSP or by hardware circuit are developed for low-power switched reluctance generation system.
这是因为电励磁的同步电动机可通过调节励磁电流来改变其磁场和功率因数,使输出的机械特性与负载特性相匹配。
Synchronous motor excitated magnet by direct current can make output mechanism specialities matched load specialities by means of adjusting exciting current to change magnetic field and power factor.
在分析瞬时功率频谱特性的基础上,提出了一种基于瞬时功率的变压器励磁涌流和内部故障电流识别新方法。
A new method, based on the analysis of frequency spectrum of instantaneous power, for the discrimination between internal fault currents and inrush currents in transformer is proposed.
近年来我公司通过研究,开发了适用于高温、高压、大容积和大功率的反应釜磁传动搅拌器。
In recent years our company through research and development applicable to high-temperature, high pressure, large capacity and high-power transmission of the reactor magnetic stirrer.
发电机的设计要求决定了励磁电流、励磁电压,从而也决定了励磁所需的功率。
Generator design considerations determine the field current, field voltage, and consequently, the power required for excitation.
而且调节励磁不仅可以调节发电机的无功功率,还可以调节发电机的有功功率和转速。
Under proper excitation control, the reactive power, active power and speed of an ASG can be independently adjusted, respectively.
又因无需励磁电流,省去了励磁损耗,提高了电机的效率和功率密度。
Benefiting from the absence of the exciting current and the excitation loss, the efficiency and the power density have increased.
本文介绍一种利用磁光晶体记录特性进行高功率微波场矢量测量的传感技术。
The sensor technology for high power microwave vector field by using recording characteristics of magneto-optic crystal is described in this paper.
超磁致伸缩材料除了具有高的磁致伸缩性能外,还具有输出功率大,能量密度高等优点。
Giant magnetostrictive materials have a lot of excellence, for example, highly capability of magnetostrictive, big output power, high energy density and so on.
针对大功率磁传动增压注水泵在使用过程中存在的永磁体高温失磁等问题,分析了磁力传动器损坏的主要故障原因。
In the course of running of high-power magnetic driven boosting water injection pump, the magnetism of the permanent magnet may vanish at high temperature.
定子集中绕组中的磁通呈双极性变化,其功率密度比传统的DSPM电机要高。
The flux reverses polarities in the stator concentrated coils which leads to higher power density compared with traditional DSPM machine.
本文提出以DSP和IGBT为核心来设计数字式可逆励磁调节器,以取代现有的以晶闸管为功率元件的模拟控制的励磁调节器。
This paper presents reversible digital field regulator with DSP and IGBT, which is substituted for current analogue field regulator with thyristors as power element.
实验结果验证了定子磁链定向的矢量控制策略既能保证定子输出频率恒定,又能较好地跟踪风力机的最大功率输出。
The stator flux-oriented vector controlling strategies of keeping stator frequency constant and capturing the maximum wind power are verified by experiment results.
分析了全桥逆变器功率变压器产生直流偏磁的机理;
The cause of the DC bias of the main transformer in the full bridge inverter has been analyzed.
分析了全桥逆变器功率变压器产生直流偏磁的机理;
The cause of the DC bias of the main transformer in the full bridge inverter has been analyzed.
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