A New Capacitor Current Resonance Measurement Method of Automatic Arc-Suppression Coil 一种新的自动消弧线圈电容电流谐振测量方法
Discussion on Decay Time for Residual Current in Resonance Grounding System 谐振接地系统中残流稳定时间的探讨
Simulation Study on Induced Current Magnetic Resonance Electrical Impedance Tomography of Brain Tissues 头部组织感应电流磁共振电阻抗成像仿真研究
The scheme of active damping by filter capacitor current is applied to suppress the transient resonance of LCL filter. 为了抑制LCL滤波器在系统暂态时产生的振荡问题,采取了电容电流抑制谐振的有源阻尼方案。
Measurement of metallic surface crack by using eddy current resonance testing 金属微裂纹的谐振式涡流检测
Constant current charging machine using LC series resonance LC串联谐振恒流充电系统
In response to the needs of power quality governance in production site, this paper designs a high power quality combined compensation system with capacities of correcting power factor, mitigating harmonic current and restraining harmonic resonance. 针对企业生产现场电能质量治理的需要,设计了一种具有功率因数校正、谐波电流治理和电网谐振抑制功能的高电能质量综合补偿系统。
Current Situation and Application of Resonance Theory 共振论的进展及应用
By injecting currents with various frequencies into power net from the secondary side of arc suppression coil and calculating the capacitive current, the automatic resonance adjustment is realized with the thyristor series capacitors. 采用从消弧线圈的副边向电网注入变频电流信号,测量系统电容电流,利用可控硅投切电容实现自动调谐的方法。
Study on eddy current compensation for magnetic resonance imaging system 磁共振成像中涡流的补偿方法研究
According to the result of the simulation in the MATLAB/ Simulink, the waves of the voltage and the current in the resonance circuit is analyzed. 第2章对感应加热电源中的主电路拓扑进行分析,比较串联谐振逆变电路与并联谐振逆变电路的优缺点,结合MATLAB中的仿真结果对谐振电路中的电压电流波形进行分析。
A new method is proposed to measure the tuning-off degree and the capacitive current of resonance grounding power networks based on a new measuring principle. 采用新的测量原理,提出了可同时对谐振接地电力网脱谐度和电容电流进行实时测量的新方法。
Automatic Tracing of Grounding Capacitance Current in Resonance Grounding Power Systems 谐振接地电网的电容电流自动跟踪测量
It is composed of four parts: DC ( Direct Current) power supply, resonance charging and polarity reverse unit, electric relay control unit and computer control unit. 它主要由四部分组成:三相整流直流电源,谐振充电及电压反向单元,继电器控制单元,计算机控制单元。
While the lamp is running in the steady-state, it can also make the lamp work at a low frequency square wave voltage and current a voiding acoustic resonance. 在稳态时可以使灯工作于低频叠加高频的方波电压,从而避免了声谐振的发生。
A study on the space-charge-limit current in waveguide and resonance cavity 波导和谐振腔中空间电荷极限电流的研究
To avoid the current resonance caused by LCL filter, damping resistance is usually needed, which increases wastage and reduces system efficiency. 为了避免LCL滤波器发生电流谐振,通常需要加入阻尼电阻,则导致损耗增加,降低系统效率。
A New Method of Digital Current Transformer Basing on the Theory of Ferromagnetic Resonance 基于铁磁谐振原理的数字式电流互感器的实现
This paper has carried on deep analysis and studies to various kinds of capacitive current calculation methods of resonance ground system and compensation principles of arc-suppressing coil, and has pointed out the error that they exist in theory and the necessity of reducing the error. 本文对谐振接地系统的多种电容电流计算方法和消弧线圈补偿原理进行了深入的分析与研究,指出了它们在理论上存在的误差及减小误差的必要性。
The thesis has a detailed analysis about the theory of series resonance capacitor charging power supply. It lists the expressions of the resonance current and voltage expressions of the resonance capacitor and the load capacitor. 本论文就串联谐振充电电源的基本工作原理进行了详细的分析,推导出了充电过程中谐振电流、谐振电容和负载电容电压解析表达式。
The paper has also analyzed the influence the high-voltage side fault and asymmetrical fluctuation of load to the judgment of capacitive current change of resonance ground system, and has put forward the method, which judges to capacitive current change accurately. 本文还分析了高压侧故障和负荷的不对称波动,对判断谐振接地系统电容电流变化的影响,并提出了准确判断电容电流改变的方法。
The quality factor of RLC series resonance and RL-C current resonance were calculated from the definition of it. 从Q值的定义出发,分别求出了RLC串联电路和RL-C并联电路的Q值。
One Kind of Current Resonance PFM Soft Switch DC-DC Converter 一种电流谐振PFM软开关DC-DC变换器
Discussion of parallel connection current resonance and overcompensation in filter compensating system 滤波补偿系统并联谐振及过补偿问题的探讨
Forward Injeted Current Detection of Magnetic Resonance in a-Si: H Solar Cell 非晶硅太阳电池的正向注入电流检测磁共振研究
The voltage balance protection according to connections of capacitor group is used for the inrush current and resonance during its switch-in, the series reactor for the explosion during its operation and the parallel discharge coil for the residual voltage during its switch-out. 针对补偿电容器投入时的涌流与谐振、运行中的爆炸、切除后的剩余电压等问题,分别采用了按电容器组接线的电压平衡保护、串联电抗器、并联平衡放电线圈等技术;
Parallel inverter is current resonance, which owns the advantages such as the avoiding of the high resonant voltage and strong load adaptability. 并联谐振型中频电源的优点是不会带来谐振高压,负载适应能力强。
It will cause a significant increase in current and voltage, and repeat produce high expansion current in the coil. This kind of resonance will bring damage to electrical equipments, affect the safe operation of the power system. 谐振会在线圈中重复地产生高倍数和长时间流过的大电流,这种循环往复的电流会损坏电力设备,影响电力系统的安全运行。
Finally, the short-circuit current, the transient recovery voltage, the secondary arc and the secondary current and resonance overvoltage characteristics of neutral reactor are analyzed for the UHV transmission system. 最后,对特高压输变电系统的短路电流,瞬态恢复电压,潜供电流以及中性点小电抗器对潜供电流与谐振过电压特性影响进行了分析。
Then, it proposes a two-stage modulation strategy to eliminate torque ripple during motor commutation process of seven switching drive topology. Simultaneously, it uses the current predictive control to suppress LC resonance phenomenon. 并且对七管驱动方式下的换相转矩脉动提出了一种双级调制策略,同时采用电流预测控制技术有效抑制了电路的LC谐振现象。