The excitation system of synchronous generator was the important element of control system of synchronous generator. Its primary mission was to control the constant of generator terminal voltage by regulating the direct current of generator exciting winding and made it maintain a constant level.
同步发电机励磁系统是同步发电机控制系统的重要组成部分，其主要任务是通过调节发电机励磁绕组的电流来控制发电机的端电压，并使其维持在一个恒定的水平上。
Bridge Excitation Strain gage signal conditioners typically provide a constant voltage source to power the bridge.
桥励磁 典型的应变片机提供一个恒定的信号电压源功率的桥。
The characteristics of current-linear-amplifier of AC exciter means that the ratio of excitation currents of main generator and exciter is constant, independent on load and temperature.
作者采用了abc坐标系统下的凸极同步发电机的数学模型，对交流励磁机带桥式整流电路进行了精确的计算机仿真分析。
Besides, the parallel operation of synchronous generator on one hand has to meet the needs of frequency, phase sequence、voltage, on the other hand it must guarantee a constant voltage at the voltage ends and a reasonable distribution of power of the generator, while all these functions can only be realized through excitation regulator.
另外同步发电机的并联运行在满足频率条件、相序条件、电压条件的同时，还必须保证发电机的端电压恒定和功率的合理分配，而这些功能必须依靠励磁调节器来实现。
Excitation time constant influences greatly on stability of power systems.
励磁机时间常数对电力系统动稳定有显著影响。
Power system; excitation system; time constant; dynamic stability; eigenvector analysis
电力系统；励磁系统；时间常数；动态稳定；特征分析
And the changing characteristics, due to the excitation current when the generator active power is constant, can also be gotten.
事实上发电机的运行参数(如不同的有功功率、无功功率)、不同的运行
It is revealed that the inertia constant and load rate of the induction motors have significant influence to the high-speed and synchronization capture transfers, while rotor resistance, excitation reactance and load rate mainly have influence on the residual voltage transfer.
研究发现电动机惯性常数和负荷转矩负载率主要影响快速切换和同期捕捉切换；而残压切换方式主要受电动机转子电阻，励磁电抗和负荷转矩负载率的影响。
This paper first gives the law of excitation in constant voltage control mode by theoretic and simulation, then the experiment confirms that the phase current and rotor speed have influences on the excitation current. A novel excitation current control mode at the constant torque starting process of DSEM is put forward, the simulation and experimental results demonstrate that the excitation must be controlled in constant current control mode in order to stand the torque at constant torque starting process of DSES/G.
该文通过理论与仿真分析了起动过程恒励磁电压控制模式下励磁电流的变化规律，并通过实验验证了起动过程相电流、转速对励磁电流的影响，在此基础上对电励磁双凸极电机恒转矩起动阶段提出励磁电流控制的方法，仿真与实验结果均表明电励磁双凸极起动/发电机励磁回路在恒转矩起动阶段必须在恒励磁流控制模式下以保证输出转矩恒定。
Other electronics introduced during the rebuilding give constant horsepower excitation control, and motor temperature control to allow maximum tractive effort to be maintained down to the point where the motor is in danger of overheating.
在改造过程中使用的另一些电子技术是恒定马力激发控制，以及发动机温度控制，以使在发动机过热温度以下保持最大的牵引力。
Other electronics introduced during the rebuild ing give constant horsepower excitation control, and motor temperature control to allow maximum tractive effort to be maintained down to the point where the motor is in danger of overheating.
在改造过程中使用的另一些电子技术是恒定马力激发控制，以及发动机温度控制，以使在发动机过热温度以下保持最大的牵引力。
Fourthly, according with the analyzing of flow measurement, we research the main problems needed to be solve in the process of measurement, such as analysis and measurement of the internal resistance, selection of excitation frequency, stable signal datum mark and restraining common mode interference, restraining for serial mode interference and working frequency interference; transporting and shielding the flow signal, constant current excitation and magnetic field equalizing, flow measuring
本章主要介绍了产品设计的系统构成，同时重点阐述了产品设计的关键部分、可靠性、电磁兼容性、仪表校准等几方面的问题。最终设计完成可以用于产业化制造的产品。论文在分析了电磁流量计原理的基础上，设计完成了低频矩形波励磁电磁流量计，为其他种类的电磁流量计的研究奠定了基础。设计完成的产品考虑了可靠性等相关产业化所涉及的问题，设计产品具有实际应用价值。
Influences of Model Parameters Based on Actual Measurement of Excitation Systems and Generator Model With Constant E_q'on Stability Calculation of Shandong Power Grid
励磁系统实测模型和Eq'恒定模型对山东电网稳定计算的影响
It includes the constant current source (CCS), power amplifiers, excitation coils, physical phantom, measurement-mode setting circuit, signal measuring block, DAC and digital I/O card.
该系统包括恒流源、功率放大器、激励线圈、物理模型、测量模式设置模块、信号检测模块、数据采集和数字I/O卡。
The formation efficiency and electron de-excitation rate constant for XeCl~in X-ray preionized pulse avalanche discharge
X光预电离脉冲雪崩放电中XeCl的形成效率和电子去激发速率
We design a suit of aviation AC excitation generator system, it insures the output voltage is constant frequency and constant voltage.
我们设计了一套航空用交流励磁发电机系统，以保证输出电压恒频恒压。
In terms of existing grid-connection techniques of wind power generator, the characteristics of " flexible connection " between AC-excited VSCF (variable-speed constant-frequency) wind power generator and grid are analyzed to make generator output voltage meet grid-connection condition by excitation control.
在总结现有风力发电机并网技术的基础上，研究了交流励磁变速恒频风力发电机与电网间的柔性连接特性，即可通过励磁控制调节发电机输出以满足并网条件。
The high-precision constant current source low-frequency rectangular wave excitation is adopted to ensure the stable magnetic field.
采用高精度恒流源低频矩形波励磁，确保磁场的稳定。
Synchronous generator by the third harmonic excitation, with the characteristics of self-excited constant-voltage and superior economy, owns a wide range of attention and development.
谐波励磁同步发电机具有自励恒压、经济性好的特点，得到了广泛重视和发展。
On the basis of a previous paper, this paper is a continuation of the discussion of various factors effecting the region of self-excitation of asynchronous machine. such as the rotational inertia constant, electrical parameters, characteristics of loads, and the effects of supply voltage.
本文在前文的基础上，讨论了机电惯性常数、电源电压、负载特性.以及电磁参数对异步电机自激区的影响；