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。
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 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 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。
For this project ABB Italy and ABB South Korea will supply low voltage switchgear, intelligent motor control units and variable frequency drives.
ABB意大利公司和ABB韩国公司将为这个项目提供低压开关柜，智能电机控制单元，以及变频器。
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。
Secondly, the paper designs and realizes the two level variable frequency heating power supply with line of 380V.
随后，本文给出了380V电源供电的二电平变频加热电源的主电路和控制电路的设计与实现。
The configuration and variable frequency adjusting speed of water circulation pump in city heat-supply system are introduced, and the effects of energy saving are analyzed.
对城市供热系统中循环水泵的配置及变频调速进行了介绍，分析了其节能效果。
In the heat-supply system with distributed variable frequency pump, there exists a zero pressure difference, at which supply and return water pressures are equal.
分布式变频泵供热系统中存在零压差点，该点供回水压力相等。
Self-excitation of induction motors caused by output LC filters of variable voltage variable frequency(VVVF) power supplies is harmful both to the motor and the power supply.
变频器LC滤波器中电容器与异步电机之间自激引起的过电压会对逆变器和电机本身产生危害。
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。
In this paper, a scheme for the water supply system of speed adjustment with variable frequency is introduced.
本文提出了一种变频调速给水系统方案。
Abstract: This paper introduces a voltage-variable and frequency-variable high voltage power supply using IPM. The operation principle is discussed in detail.
摘要：介绍了一种采用智能功率模块的调压调频高压电源，详述了其工作原理。
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。
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。
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