Using variable frequency power, run more smoothly.
采用变频调速动力，运行更平稳。
Provides completely ideas of variable frequency power design.
提供了一套较为完整的电源系统设计方案。
The main function of variable frequency power source is to change the current AC power to the needed stable pure power.
变频电源的主要功用是将现有交流电网电源变换成所需频率的稳定的纯净的正选拨电源。
The SA4828 used as SPWM signal generator controls the IPM via driver circuits to produce variable frequency power supply.
它以SA 4828作为SPWM信号发生器，经过驱动电路控制IPM模块，产生三相变频电源。
Now, a good variable frequency power requires for not only high steady state performance, but also fast dynamic response.
好的变频电源输出波形不但要具有高的稳态性能，还应有快的动态响应。
Test bench through the use of Fengguang brand high-voltage variable frequency power supply to achieve the pump performance test function.
测试台通过采用风光牌高压变频电源实现了水泵性能测试功能。
This article describes the operation principle and circuit scheme of a sort of three-phase combined variable voltage and variable frequency power supply.
提出了一种组合式三相变压变频电源的工作原理和电路结构。
Variable frequency power, which has small size and light weight, played an important role in saving energy, frequency control and improving power quality.
变频电源自诞生以来，便以体积小、重量轻等特点，在节能、变频调速和改善电能质量方面起到了重要作用。
This paper introduces the application of 4.8mw variable frequency power supply of Fengguang brand in the water pump test system of Arak Machinery Plant in Iran.
本文介绍了风光牌4.8MW变频电源在伊朗阿拉克机械厂水泵测试系统的应用情况。
For the purpose of meeting high efficiency and premium efficiency motor tests, a set of static variable frequency power supply test system was researched and designed.
从满足高效和超高效电机的效率测试出发，研究和设计了一套基于静止变频电源的电机效率测试系统。
The working principle of the parallel contravariant IGBT variable frequency power supply and its application in the quenching process of engine crankshafts are introduced.
介绍了并联逆变式IGBT变频电源的工作原理及在汽车发动机曲轴淬火上的应用情况。
This paper mainly discusses the control and protection system for the 20kw VSCF (Variable Speed Constant Frequency) Wave Power Electric Station.
本文着重介绍了20千瓦变速恒频波力发电系统的控制功能和保护体系。
All electronic SS type camera tube is characterized by its low expense of power, variable scan frequency, high resolution, small size and light weight.
采用图案电极的静电聚焦静电偏转(SS型)摄像管，具有功耗低、扫描频率可变、分辨率高、体积小和重量轻等优点。
In order to meet the needs of variable pulse width, frequency and power for laser fuze, a model of the LD driver circuit is built up based on its principle.
为了满足引信用脉冲式半导体激光器驱动电路的脉冲宽度可调、频率可调、功率可调的需要，根据LD驱动电路的工作原理，建立LD驱动电路的一般模型，并进行了仿真分析。
The research in this thesis is focused on the low harmonic variable-frequency power for the system meeting the needs of wind tunnel propeller model testing requirements.
旨在研究满足螺旋桨飞机模型风洞试验要求的为高功率密度电驱动系统供电的低谐波变频电源。
A variable speed constant frequency wind power generation system of doubly-fed induction generator based on converter excitation was described.
建立了基于变换器励磁的双馈感应电机的变速恒频风力发电功率控制系统的模型。
MW variable speed constant frequency wind turbine from shenyang university of technology is a variable pitch wind turbine, it can change pitch to adjust power above rated wind speed.
由沈阳工业大学研制的MW级变速恒频风电机组属于变桨距型机组，它在额定风速以上进行变桨距调功控制。
The decoupled control of active power and reactive power is a key technology of variable speed constant frequency (VSCF) wind energy generation system.
双馈发电机的有功和无功功率的解耦控制是变速恒频（VSCF）风力发电系统的关键技术。
The using of the automatic optimization and frequency variable technology can realize efficiency in circulated water of the power plant.
利用自动优化控制和变频调速技术实现火电厂循环水泵安全节能高效控制。
The low-frequency instability in variable speed constant frequency doubly fed induction generator(DFIG) widely used in wind power generation is investigated.
研究了广泛应用于风力发电的变速恒频双馈感应电机系统中的低频不稳定现象。
The variable polarity power supply can satisfy the welding process of the aluminum and aluminum alloy by adjusting the current frequency, positive and negative current time and amplitude value.
调节正负半波的幅值、频率及占空比能满足铝及铝合金的焊接工艺要求。
The signal power supply that this thesis proposed is a frequency variable power source used in test field. This thesis concentrates on analysis and designing the nuclear part: Inverter.
本文的信号电源就是变频电源在测试领域的应用，本文就信号电源的核心逆变器部分做了详细的分析和设计。
The AC-DCAC voltage source inverter composes the main circuit of this variable frequency system and CPLD is the logic control device of the power device (IPM).
该变频调速系统主电路采用交-直-交形式，以(CPLD)作为调速系统逆变电路功率开关器件(IPM)的逻辑控制器件。
An APFC control solution for high power variable frequency air conditioner is introduced.
本文介绍了较大功率变频空调的一种APFC方案。
The operating status of three-phase three-wire HAPF(Hybrid Active Power Filter) in harmonic suppression and reactive power compensation for variable-frequency motor are introduced.
介绍了三相三线制混合型有源电力滤波器在变频调速电动机谐波治理和无功补偿方面的运行情况。
Because power systems are complex and multi-variable, it is very difficult to realize automatic secondary load-frequency control.
电力系统一般都很复杂且变量又多，实现二阶负载—频率自动控制也相应变得很困难。
Theoretic basis and application effect of using variable frequency regulation technique in power demand side were analyzed.
对电力需求侧采用变频技术的理论依据及实际应用中取得的效果进行了分析。
To the most potential variable-speed constant-frequency doubly fed induction generator, the device of power electronics converter used to control rotate speed is analyzed.
针对最具有发展潜力的变速恒频双馈风力发电系统，分析其用于转速控制的电力电子变换器装置。
The main parts of the aircraft VSCF electrical power system consist of the no-brush AC variable frequency generator, converter and controller.
飞机变速恒频电源系统的主要部件有无刷交流变频发电机、变换器和控制器。
Automatic shutoff power semiconductor widely applied in electric circuit such as SM's power, ac variable-frequency power etc. But burning tube often affected its reliability.
自关断功率半导体器件在步进电机电源、交流变频电源等电子线路中应用广泛，而烧管子问题严重影响自关断器件工作的可靠性。
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