7逆功率、超功率检测及报警停机保护；
7 inverse power, super power detection and alarm stop protection;
逆功率脱扣试验。
逆功率脱扣测验。
请在船上做保护试验，它们应包括失压，过载和逆功率试验。
Please carry out the protection test on board. They should ask brige for permission.
船舶发电机组过载保护试验、并车试验、逆功率和逆电流保护试验；
Overload protection, and vehicle test, reverse power and reverse current protection test for marine generator.
逆功率继电器的可靠性直接关系到大中型发电机变压器组的安全运行。
Reliability of reverse-power relay is of immediate effect on the secure operation of large and medium generator-transformer units.
逆功率继电器逆功率继电器是指带瓦特计的继电器，用来感知电流的方向。
Reverse power relay a reverse power relay is a relay with a wattmeter movement that senses the direction of power flow.
黑启动初始阶段，小系统空载运行的情况下，由于逆功率保护而往往发生机组并车失败问题。
When a small system is in on-load operation in the early stage of black start, unit paralleling may fail due to reverse power protection.
如果一台发电机组没有运转，并且没有逆功率继电器保护，运转的机组就会驱动这个机组，这台机组上的发电机则变成电动机运行。
If one set stops and reverse power protection is not provided, the set still running will drive the set that has stopped. The generator on the set that has stopped will act as a motor.
本文采用自功率谱、逆频谱方法对拖拉机变速箱异常噪声源进行了诊断，找出了产生异常噪声的根源。
With auto-power spectrum and cepstrum, this paper diagnoses the unusual noise source of the gear box, and finds an impaired gear of the box.
以应用于燃料电池逆变功率变换的阻抗源逆变器为例，分析了其工作原理和控制方法。
To describe the operating principle and control, this paper focuses on an example: a Z-source inverter for dc-ac power conversion needed in fuel cell applications.
变频调速系统主电路采用交-直-交形式，以可编程逻辑器件(CPLD)作为调速系统逆变电路功率开关器件IGBT的逻辑控制器件。
Alternating-direct-alternating circuit is adopted and CPLD is used as logic control device of power IGBT in main circuit of variance-frequency timing system.
多电平逆变电路具有输出谐波少、开关频率低等明显上风，非常适合应用于高压大功率的变频调速领域，具有现实的节能意义。
It has significant advantages, such as less distorted output, lower switching frequency, etc, and it has reality energy conservation significance in application of the high - voltage and high-power.
本文论述了可控硅逆变器逆变角影响串级调速装置功率因数的基本原理。
This paper discusses the basic principle which the inverted firing angle of thyristor inverter has the influence on power factor of a cascade connected device.
由于复功率追踪引入了与线路数目相等的新节点，对潮流跟踪矩阵进行求逆时将耗费大量的时间。
As complex power method introduces large number new nodes, the invert of tracing matrixes will consume a long time.
详细推导了基于功率倒置阵列的线性约束最小方差（LCMV）算法及其递推公式，避免了矩阵求逆的复杂运算。
The linearly constrained minimum variance (LCMV) algorithm based on the power inversion array and its iterative formula are deduced in the paper, which avoids the complexities of matrix inversion.
提出采用大功率IGBT设计变极性脉冲MIG焊双逆变弧焊电源。
The high-power IGBTs are adopted to design the dual inverter arc-welding power source for variable polarity pulse MIG welding.
克服了线路阻抗变化对系统均流精度的影响。实验结果表明，该方法能较好地实现逆变模块的功率均分，模块间输出电流偏差小于1%。
The experimental results show the proposed method can share the output power quickly, and the current-sharing error is less than 1%.
同时，控制电路必须对整流电路、逆变电路等系统主电路部分进行功率控制，使在各种扰动下维持系统各参量不偏离其设定值。
At the same time, the control circuit must realize power regulating of the rectifying circuit and the inverter circuit and keep some parameters impervious to the interferer.
为了研究高性能、高效率的CO_2焊接电源系统，本文引入了逆变技术，并使用IGBT作为功率器件。
This paper introduces inverter technology and USES IGBT as power component to research high performance and high efficiency CO2 arc welding power source.
对一种大功率IGBT逆变式空气等离子切割电源的主电路进行了原理分析与设计。
The paper analyzes and designs the main circuit of high-power IGBT inverted air plasma cutting power supply.
现代高功率因数电子镇流器结构中普遍采用功率因数校正（PFC）和半桥逆变谐振电路拓扑。
The power factor correction (PFC) and half-bridge inverter circuit topology are commonly used in modern high power factor electronic ballasts.
结果表明：这种新型的大功率埋弧逆变自动焊机有着广阔的应用前景。
The result shows that this newfashioned high-power machine of submerged-arc welding inverter has wide prospect of application.
本文设计了一种适用于中大功率、便携式逆变焊机，具有电源输入侧功率因数高，主功率器件实现软开关等特点。
In this paper, a multifunctional welding machine is designed with the characters of high power factor, soft switching and portable remove.
设计了一种集充电和逆变功能于一体的大功率光伏逆变电源系统。
A kind of high power photovoltaic inverter power system, containing charge and inversion function is designed.
介绍了大功率单相变频加热电源的系统组成，包括整流、滤波、逆变和控制电路等部分。
This paper introduces the system of single phase large power source varied frequency for heating, contains rectifier, filter, inverter and control circuit etc.
揭示了逆变站电压支撑不足是限制直流功率紧急提升充分发挥作用的主要因素。
The study reveals that the voltage support in the inverter is the main limiting factor for the effectiveness of the HVDC emergent power modulation.
针对客车风扇电机电刷磨损快，使用寿命低的问题，提出一种实用新型小功率逆变驱动系统。
A novel small power inverter-fed induction-motor drive is present, concerning the fast wearing and tearing of the train fan motor and low life of it.
针对客车风扇电机电刷磨损快，使用寿命低的问题，提出一种实用新型小功率逆变驱动系统。
A novel small power inverter-fed induction-motor drive is present, concerning the fast wearing and tearing of the train fan motor and low life of it.
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