These high frequencies correspond to the rotation speeds of centrifuges; America tightly controls the export of frequency converter drives able to operate at frequencies above 600 Hz.
这些高频率与离心机的转速相对应；美国对能够以600赫兹以上频率运行的频率转换器驱动的出口进行了严格管控。
This product is fit for frequency converter power transmission system with high temperature resistant.
本产品适用于耐温等级较高的变频器电力传输系统。
The model considers the dynamics of converter switch circuit and can be applied in the analysis for high frequency dynamic characteristics.
该模型考虑了换流器开关电路的动态特性，适用于高频动态特性分析。
Driving is mainly regulated by frequency converter, with high driving accuracy of synchronous belt.
主传动采用变频调速。同步带传动，传动精度高。
With this technique, the effect of equivalent high switching frequency converter has been obtained with low switching frequency converter.
提出了基于载波组合相移技术的电流型电力有源滤波器，在较低的开关频率下实现了等效的高频载波效果。
The paper presents the system design method and control process of applying frequency converter to realize water provision in constant pressure for high building.
本文介绍了用变频器实现高层建筑恒压供水的系统设计方法和控制过程。
It has been shown that the designed DC switching mode converter has a stable output voltage frequency, small ripple, high operating frequency and low power consumption.
结果表明，所设计的直流开关型变换器集成模块输出电压稳定、纹波小、工作频率，高、功耗低，且体积小。
The results show that this control scheme could realize the high efficiency soft-switch control under the constant switching frequency to the converter.
结果表明，该控制方案能在恒定开关频率下对变换器实现高效率的软开关控制。
The constant - frequency quasi - resonant converter has the problems of power limitation and high stresses.
恒频控制的准谐振变换器存在功率限制和高应力缺陷。
Utilizing speed adjusting function of the frequency converter, the system has high operation efficiency and less time to adjustability.
采用变频调速器，系统调节的操作效率更高、响应时间更短。
A novel topologic structure of high frequency AC pulse density modulation converter is proposed, and its operation principle, control scheme and design are described in detail.
提出了一种新颖的高频交流脉冲密度调制变频器的拓扑结构，并详细阐述了工作原理、控制方案和设计方法。
A novel topology of high frequency link DC ac converter with bi directional flyback mode is proposed, and its operational principle and control strategy are introduced briefly.
提出了一种新颖的双向电流源高频链DC A C功率变换器的拓扑结构，并简要地阐述了其工作原理和控制方案。
Adverse effects of switching losses which operating at high frequency are analyzed at the beginning of a three-level matrix power converter configuration.
从三电平矩阵式电力变换器的拓扑结构入手，分析在高频下工作时开关损耗带来的负面效应。
A method of the high voltage and high frequency parallel resonant converter with capacitive output filter which has the minimal peak input current is introduced.
建立了一种具有最小电流峰值的电容输出滤波高频高压并联谐振变流器分析设计方法。
This circuit has been applied in development of high voltage frequency converter successfully.
该电路已经在高压变频器的开发中得到应用。
Gear system besides Double frequency converter controller, making machine simpler operation and more stable when high-speed working.
整机为双变频控制的基础上添加了齿轮传动系统，使整机操作简单、高速运行更加稳定。
One is abstracted from BUCK converter named single-loop model, which has only one high frequency current loop.
一个模型源自BUCK变换器，只有一个高频电流回路，称作单环模型。
The active clamp ZVS-PWM power converter circuit has many advantages over the conventional PWM converters. The design and performances of high frequency power supplies are improved.
有源箝位ZVS-PWM开关变换器较硬开关PWM变换器有很大的优点，可以改进高频电源的设计，改善它的性能。
The insulation class F or class H . The insulation of open-loop U/f condition of . structure has the adaptability to high carrie frequency voltage supplied by frequency converter .
电动机的绝缘等级为F级或H级，绝缘结构具有对变频器输出高载波频率电压的适应能力。
High frequency and soft switching of converter can reduce the size and weight of transformer and filter, improve electric performance, increase efficiency and reliability.
变换器高频软开关工作可减小变压器和滤波元件的尺寸和重量，改善电气性能，提高效率和可靠性。
In this paper, the principle and properties of power source high voltage frequency converter are introduced as well as its application in mixer fan of steelworks.
文章主要介绍了动力源高压变频器原理、性能及在炼钢混铁炉风机中的应用情况。
In some embodiments, the converter has a third sub-mode (' high output power sub-mode '), in which pulse width modulation is used but the switching frequency is fixed at a second frequency.
在某些实施例中，转换器具有第三子模式(“高输出功率子模式”)，其中使用脉冲宽度调制，但开关频率固定在第二频率。
Based on the analysis of the EMI sources and coupling paths of an off-line PWM converter, a high frequency model of EMI coupling paths is built and verified by measuring and theoretical calculation.
在对离线式PWM变换器电磁干扰源和电磁干扰传播通道分析的基础上，通过实测和理论分析相结合的方式，建立了电磁干扰传播通道的高频模型，并进行了验证。
High voltage frequency converter can deal with it. But it needs much space and costs a lot.
高压变频器能很好的完成大容量电机的起动，但是价格昂贵，占地面积大。
This paper introduces the work principle of four-quadrant operating high-pressure frequency converter, and its application in coal mine auxiliary shaft winch innovation system.
介绍了四象限运行高压变频器的工作原理，并应用到煤矿副井绞车改造系统。
The article analyzes the application of high voltage frequency converter on the arc furnace dust removal fan in some steel-smelting factory.
分析了高压变频器在某炼钢厂电弧炉炼钢除尘风机中的应用。
In the end, by studying the load character of contactless electrical power deliver system, this paper designs the high frequency full-bridge series resonance converter.
最后，文中详细分析了无接触电能传输系统的负载特性，进而设计出用于无接触电能传输系统的高频全桥串联谐振逆变器的拓扑结构。
Apply imported frequency converter, high frequency arc starting, high rate of success.
采用进口变频器件，高频引弧，成功率高。
This kind of material is already extensive now to be used for common mode choke of high frequency circuit changer, high frequency dc-to-ac converter, zero order mutual-inductor and etc.
这种材料现已广泛用于共模扼流圈、高频开关电源、高频逆变器、零序互感器等许多电器元件。
This kind of material is already extensive now to be used for common mode choke of high frequency circuit changer, high frequency dc-to-ac converter, zero order mutual-inductor and etc.
这种材料现已广泛用于共模扼流圈、高频开关电源、高频逆变器、零序互感器等许多电器元件。
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