查询词典 harmonic analyzer

A new design scheme of hand- held power harmonic analyzer based on LabVIEW DSPmodule is presented.

文章摘要：提出一种基于全功能可视化数字信号处理器设计工具LabVIEW DSP模块的手持式电力谐波分析仪开发方案。

High performance power line harmonic analyzer.

高性能电网谐波分析仪。

With the 339A you get a total Harmonic Distortion Analyzer, True RMS Voltmeter, and Sine Wave Oscillator.

随着339A ，您会获得一个总谐波失真分析仪，真有效值电压和正弦波振荡器。

A virtual checkout instrument and harmonic analyzer instrument based on Lab VIEWis developed.

用LabVIEW编制了虚拟电流互感器校验仪及谐波分析仪程序。

A power line harmonic analyzer based on industrial PC is introduced.The system structure,the basic circuit design of si gnal pre-processing card,the basic HW and SW composition of data acquisition ca rd,and the system software design are described.

介绍了用PC机组成的电能质量分析仪的整体构成，信号预处理卡的基本电路设计，数据采集板的基本软、硬件结构及整个系统的软件设计。

Broad working load enclothes ● to help an user realize ISO9000 ● to use ● diversity and flexibility ● easily portable the working load that suits you with consistence and funds are estimated the 5500A of Fu Luke company of calibration program level tastes calibrator prolifically, can calibration number type and imitate type are multi-purpose watch, thermometer , hand-held dynamometer, data is collected implement, voltaic clamp, each sort analyzer of harmonic of calibrator of watch of recorder, face plate, process, electric power and a lot of other are similar.

宽广的工作负荷笼盖●帮助用户实现ISO9000 ●易于利用●多样性和灵敏性●便携式和坚固性适合您的工作负荷及经费预算的校准方案尺度的福禄克公司5500A多产物校准器，能够校准数字式和模拟式多用表、温度计、手持式功率表、数据采集器、电流钳、各类类型的记实仪、面板表、过程校准器、电力谐波分析仪以及良多其它近似的测量工具。

Since the harmonic spectrum of ac-side phase voltage of PWM rectifier is influenced not only by pulse modulation style, but also by the parameters of close-loop adjustors, a three-phase voltage source inverter controlled by TMS320F2812 has been built to obtain the harmonics purely generated by SVPWM and verify the algorithm. Power analyzer PZ4000 has been adopted to acquire experimental results.

由于PWM整流器交流侧相电压的谐波频谱不仅与脉冲调制方式有关，还受到闭环调节器参数的影响，因此该文搭建了以TMS320F2812为控制核心的三相电压型逆变器系统以得到单纯由SVPWM产生的谐波频谱，并对该算法进行验证。

Harmony ; ancient plain harmonic beauty ; recent-times loftiness of opposite ; ugliness ; absurdness ; modern dialectically harmonic bea

和谐；古代朴素和谐美；近代对立崇高；丑；荒诞；现代辩证和谐美

The main circuit of the direct voltage type SVC consists of the autotransformer with average voltage, fixed branch which can compensate the reactive power and filter the harmonic, dynamic branch which can compensate the reactive power and filter the harmonic, capacitive AC thyristor no contact switch and the measuring and controlling system of

自耦均压变压器作为SVC中的主要器件，本文通过变压器的短路试验以及编程进行多项式拟合，建立了其漏抗随电容器组投切级数变化的数学模型，进而做了自耦均压变压器与相同容量相同变比的双绕组变压器有功损耗的比较，分析了36抽头自耦均压变压器在一组电容器全部投运时的空载特性，并对SVC的静态性能进行了全面分析。

Electronic equipment produces busywork and harmonic components that not only increase unnecessary loading and power consumption in public power equipment. But also harmonic components insert into public power system that causes deteriorating of power quality. Risks increase into break and mistake of precision instrument.

而电力设备所产生的虚功与谐波不仅无谓的加重公用电源设备的负担，增加无谓的功率消耗，更因为谐波成份的加入而使得电源品质恶化，增加精密设备损坏与误动作的风险。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。