查询词典 inverter

In this paper, a DC pre-excitation strategy, which limits the starting current and enhances the electromagnetic torque via establishing the flux linkage before starting process, is proposed to the three-level inverter under analysis on the mechanism of the above large current.

该文在探究上述情况产生原因的同时，提出了一种应用于三电平变频器-电机系统的直流预励磁方案，在电机起动前预先建立起电机磁场，有效地遏制过大的起动电流。

TYH-60 and TYH-100 are the special equipment for cold pressing production of wrought iron materials, which adopt imported inverter technique with high bearing capacity and various mold patterns and are equipped with different patterns of so as to roll form different patterns on flat steel, square steel, round steel, square pipe and special pipe of certain specifications.

TYH-60和TYH-100是冷压生产铁艺用料的专用设备，采用进口变频技术，承载能力大，模具图案多，配置不同图案的模具，可将一定规格的的扁钢、方钢、圆钢、方管及异形管辊压出不同的花纹图案。

TYH-60 and TYH-100 are the special equipment for cold pressing production of wrought iron materials, which adopt imported inverter technique with high bearing capacity and various mold patterns and are equipped with different patterns of so as to roll form different patterns on flat steel, square steel, round steel, square pipe and special pipe of certain specifications.

我厂从事铁艺设备，铁艺机械的研制，开发，生产的专业厂家，主产品有手动，电动，切断，冲压，高频加热五大类。4。 TYH-60和TYH-100是冷压生产铁艺用料的专用设备，采用进口变频技术，承载能力大，模具图案多，配置不同图案的模具，可将一定规格的的扁钢、方钢、圆钢、方管及异形管辊压出不同的花纹图案。

Quasi-constant torque control is used when the speed is lower than 125 km/h, and constant power control is applied when the speed is higher than 125 km/h. Direct rotor flux oriented control system is employed and three-level neutral point clamped traction inverter with SVPWM control is adopted.

在速度低于125km/h采用准恒转矩控制，速度高于125km/h采用恒功率控制，采用直接转子磁场定向控制系统，牵引逆变器采用空间电压矢量控制的带中点钳位二极管的三电平拓扑结构。

Automotive supplier Lukcyandy production and management company is a large car modification parts automotive supplying base includes operators, including car surrounded by large, car wing / tail, automobile machine cover, auto exhaust pipe, auto balance bar / top bar modification, such as pieces of manufacturers, the project covers the automotive care bar, stainless steel car wheel eyebrow, the threshold of Article vehicle, motor vehicle be decorated windows, automotive fuel tank cover accessories, car guard, car decoration articles, car steering Lighting, automotive LED, HID car and barometer block car, car fender, pedal car with LED Yingbin, car modification at the front lines, well-known automotive spark plugs, automotive performance style, fuel-efficient car accelerator, auto magnetizer, auto rectifier, auto brake conversion, modified car lighting, as well as racing car steering wheel and other car modification products such as accessories include car seat cover, car oxygen bar, auto pedal, auto touch-up painting pens, spray cans of automotive touch-up painting, charcoal car, car perfume, car CD package / CD folder, the first car pillow, car pillow, car solar doll, shaking his head and so on, it supplies include automotive inverter / power converter, car mobile phone charger / car charge, car ashtray, car seat belt / car safety buckle, car foot pad, barometer block car, automotive beauty products contain conservation turtle license, vehicle 3m series, auto tools automotive products such as super-supermarkets, welcome to visit.

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The complete wind turbine speed control firstly proposed here also improves the tracking effect of wind turbine rotating speed to variable wind speed. Wind turbine rotating speed synchronized power observer compensates the power ripple of wind turbine resulted in inverter dead time. A low pass filter used at the output of MPPT controller smoothes the speed reference, which makes the rotating speed of wind turbine more stable.

本文首次提出的变转速扰动的MPPT控制提高了风车最大功率点追踪的快速性和稳定性，风车完全转速控制提高了风车转速对变动风速的跟踪效果，转速同步风车功率观测法消除了逆变器死区所造成的风车功率波动的影响，带有低通滤波器的MPPT控制器使得风车的转速更加趋于平稳。

Developing a high performance control strategy is a significant point in three-phase PWM inverter, which is an important part of wind power generation.

三相PWM逆变器是风力发电并网系统的主要部分，开发一种高性能的逆变器控制策略已经成为研究的重点。

As the temperature condition for operation of cooling tower was lower than the design wet-bulb temperature most of the time,it was uneconomical to use single-speed motor,and the use of inverter-fed motor also cost higher.

冷却塔运行的气温条件大部分时间低于设计湿球温度，采用单速电机运行不经济，采用变频电机设备费用较高，为解决这些问题，开发了适合冷却塔应用的变扭矩变极电机。

Mainly engaged in the project are: 1, lithium battery protection board, power type (power tools, electric vehicles, model aircraft) lithium battery protection board; 2, switching power supply, adapters, chargers; 3, high power audio, amplifier, communications power inverter power supply; 4, solar cells program, program charger, portable power supply; 5, special power supply / power supply, as well as smart power management system; 6, LED drivers, all kinds of high-frequency electronic circuit design, update problem-solving / Circuit Design and so on; Electronics 8514C has°load, four-channel Tektronix TDS2014B Oscilloscopes, Tektronix Current Probe, Power Instrument / high voltage tester, spectrum analyzer proposed, frequency meter, signal generator, the high and low temperature environment for the control room and other advanced equipment and a group of highly professional and well-motivated research in science and technology, design professionals; have the ability to achieve all-round, the perfect integration services.

主要经营项目有：1、锂电池保护板、动力类（电动工具、电动车、航模）类锂电池保护板；2、开关电源、适配器、充电器；3、大功率音响、功放、通讯电源、逆变电源；4、太阳能电池方案、充电器方案、便携电源；5、特种电源/智能电源以及电源管理系统；6、LED驱动，各种高频电子电路的设计，更新解难/电路设计等；公司拥有艾德克斯8514C电子负载、泰克TDS2014B四通道示波器、泰克电流探头、功率仪/高压测试仪、频谱分析议、频率计、信号发生器、高低温环境控制室等先进设备和一批专业素质高、干劲十足的科研技术、设计人才；有能力做到全方位、一体化的完美服务。

The experimental results illustrated distortion ratio of line voltage and efficiency were improved,compared with hard-switching inverter.

实验结果表明：与硬开关逆变器相比，输出线电压的畸变率降低了，效率得到了改善。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。