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。
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。
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。
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 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。
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。
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。
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。
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。
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