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At resonance the tank current is real and in phase with the coupler transformer voltage, which is in phase with the inverter voltage.

谐振时，振荡器的电流和耦合变压器的电压同相，还有逆变器的电压。

The mathematical model of a dual three-level STATCOM which consists of two three-level inverters connected together through the inter phase transformer is presented by means of the switching function concept The dc-link voltage, output current, and output voltage waveforms of the STATCOM are analyzed.

利用开关函数的概念，建立了由2个三电平逆变器和1个输出耦合变压器构成的双三电平STATCOM的数学模型，并对其直流电压波形和交流侧输出电压和电流波形进行了仿真分析。

The principle of the novel single-phase hybrid active power filter is described in detail. Based on the above analysis, Kalman filtering approach for estimation of harmonics is presented to improve the speed and precision of harmonic detection, and it also can avoid the influence made by voltage distortion on harmonic detection. A new current control strategy based on energy balance is presented to regulate the active part absorbing or releasing active power and control the inverter to produce current opposite to the harmonic current reflowing in injection branch, the above method combined with harmonic current tracking control that keeps the stabilization of dc-side voltage and improve the reliability of the system.

并详细分析了系统的滤波原理，提出了基于卡尔曼增益自调整的改进型动态谐波含量估计方法，能够快速准确的跟踪检测电网谐波电流，并且克服了电力机车等冲击性负荷引起的电网电压畸变对谐波检测精度的影响；提出了基于逆变器两侧能量平衡的电流控制方法使有源部分吸收或释放一定有功或无功功率及产生与注入支路回灌谐波电流相反的抑制电流，然后联合电网谐波电流跟踪控制以获得系统参考信号，保证了直流侧电压的稳定，提高了装置可靠性，增强了系统滤波性能。

An injection type shunt hybrid active power filter was analyzed, it can suppress harmonic currents and compensate high capacity reactive power, nevertheless, a sharp boosting on DC-side voltage was found in application. Based on the analyses of the reasons, different solutions was proposed such as adoption of main circuit of multiple performances, the use of hysteretic control method, fore-feed control of reflowing current or direct control on DC-side voltage without a rectifier to supply.

研究一种兼具大容量无功补偿能力的注入式并联混合有源滤波器，并分析其在工程应用中发现的直流侧电压抬升现象及这种现象产生的原因，在此基础上提出从采用多重化主电路结构、滞环控制法、回灌电流前馈控制法和脱离整流电源直接对直流侧电压进行控制等几个方面来抑制直流侧电压抬升的方法。

A pilot bus voltage correction method based on voltage control area.

基于电压控制区的主导节点电压校正方法。

In the case of plane-parallel electrodes.the variation between the voltage wave form of two dielectric plates and the voltage waveform of power supply was theoretically discussed-the times of different discharge shapes were respectively calculated-and what is more.the movement of charge ions was demonstrated.

从理论上对介质阻挡放电的放电气隙上的电压变化进行了系统分析，完整地讨论了放电过程中气隙上的电压波形变化以及各波形阶段对应的时间。并进一步确定了放电离子在不同波形阶段的运动情况。

A load modulating device comprises means (4) for polarising the housing of the transistor (M2, M3), at the first supply voltage or at the second voltage, in accordance with a logic modulation signal.

载荷调制装置包括一些偏压装置(4)，它可以根据逻辑调制信号，使一个或两个晶体管(M2、M3)的阱偏置到第一电源电压或第二电源电压。

Load model is representation of the relationship between the power and bus voltage. Load characteristics of power system have a significant effect on power system analysis of power flow and stability that includes transient stability, voltage stability and dynamic stability. The accurate load characteristics will help engineer to analysis power flow and stability.

中文摘要负载模型可反映负载功率和电压之间的相互关系，电力系统的负载特性对系统负载潮流及稳定度包括暂态稳定度、电压稳定度及动态稳定度的分析皆有著重大的影响，准确的负载特性将有助於电力工程人员在负载潮流与稳定度之模拟分析。

The solution includes 11 kV switchgear, automation hardware and software for the ships' power management systems, and high voltage and low voltage cables that connect the shore panel to the main switchboard and power management system onboard each vessel.

该解决方案包括用于船只电力管理系统的11KV接电开关、自动化硬件和软件，以及连接陆上面板与每艘船上的总开关板和电力管理系统的高压和低压电缆。

For the application of Balance of heat loss with limit high ,we can choose low a balanced current, high voltage start a balanced, low accuracy, as well as reduce the number of the battery in series to reduce heat loss of balance; In the situation that heat capacity of the battery pack requirements is easy , You can choose a higher balance of the current, low voltage start a balanced, high precision balance, as well as more battery in series to increase the number of battery-balanced speed.

对均衡热损耗限制高的应用，可选择低均衡电流、较高的均衡启动电压、较低的均衡精度以及较少的同时均衡电池数来减低均衡热损耗；而在电池包热容量宽裕的情况下，可以选择较高的均衡电流、较低的均衡启动电压、较高的均衡精度以及较多的同时均衡电池数来提高均衡的速度。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。