Statistical Analysis and Countermeasures of Under-voltage ( No-voltage) Release Protection of Low Voltage Circuit Breakers Energy Loss Research of Load-sensing Excavator's Hydraulic System 欠压(失压)脱扣保护动作负荷损失分析及对策负载敏感型挖掘机液压系统能耗分析
With the couple-field analysis tools, the electrostatic-structure couple-field analysis is carried out under normal working conditions and the pull-in voltage and release voltage are also analyzed. 采用耦合场分析工具和方法,对双轴微反射镜在正常工作条件下的静电和结构耦合场进行了分析,同时分析了光开关结构的吸合与释放电压。
The flux transfer trip is an actuator of intelligent release of low voltage circuit breaker, its performance concerns the reliability of circuit breaker. 磁通变换器是低压断路器智能脱扣器的执行元件,它的性能关系到断路器工作的可靠性。
In order to obtain volt ampere characteristic and related parameters of ZnO nonlinear varistor, the method by which the charged capacitor release energy to ZnO elements is applied, the element ′ s current and voltage are sampled and processed rapidly by microcomputer. 为得到阀片的伏安特性曲线和有关特征参数,用储能电容方式对ZnO阀片进行放电,应用微机技术对放电电压、电流进行快速采样处理。
The Experimental results on a wind simulator and flywheel based system have verified that proposed energy complementary control can satisfactorily regulate the power of the storage unit to store and release energy and thus to maintain a steady DC voltage from the distributed power generation system. 实验结果证明,在风力发电和飞轮储能联合系统的能量控制过程中使用模糊控制算法,实现了能量的快速存储和释放,起到了稳定系统电压的作用,取得了满意的控制效果。
Design of New Intelligent Release in Moulded Case Circuit Breaker INTELLIGENT TRIPPING DEVICE FOR LOW VOLTAGE MOULDED CASE CIRCUIT BREAKER 塑壳式断路器新型智能化脱扣器的设计与实现新一代塑壳式断路器的智能脱扣装置研究
The soft control strategy utilizes the dc-link capacitor to absorb or release the transient energy during the fault or disturb period, which will benefit the main control object such as power flow and bus voltage. 该策略利用了直流侧电容能够在干扰过程中,吸收或释放系统中部分的多余或不足的能量,从而有利于稳定系统的主要控制目标,如线路潮流和母线电压。
Experiment platform that was used to test delay time, trip voltage, release voltage and contact voltage was established after strict analysis to the design requirements. 使用这个平台对延迟时间、动作电压、释放电压和触点电压降进行了测试,并对实验结果做了分析。
Analyses the characteristics such as large heat release of equipment, compact arrangement of equipment and high rank of voltage. 分析了变电所设备间设备发热量大、设备布置紧凑、电压等级高等特点。
However, when the secondary side of HF transformer has no load, the stored magnetic energy in the leakage inductance lacks its path to release itself and cause a higher voltage surge between the secondary terminals of HF transformer. 但是,当高频变压器次级出现开路时,漏感中的储能没有放电回路,会导致较高的电压尖峰。
This system can detect the vacuum valve performance parameters such as the short circuit, open circuit conditions, the release and pick time of the voltage, vacuum suppression and release time, the leakage of the valve. 该系统能够检测真空阀的短路、断路情况,真空阀电压吸合与释放时间,真空打压与释放时间,阀的泄漏量等性能参数。
The load motor consume flywheel release energy and avoid the DC bus voltage to pump, so as to achieve its objective of feedback control. 这样的控制系统保证了充电时的的稳定性、快速性和准确性;放电时的飞轮释放能量被负载电机所利用,避免了中间直流母线电压的泵升,从而达到对Ud的反馈控制。