The variable voltage variable frequency(VVVF) control of 3-phase induction motor for driving trolleybuses is expounded.
介绍无轨电车采用变压变频控制的三相感应电动机驱动技术。
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。
By adjustment to control signal, systems might realize variable voltage, variable frequency, steady voltage, steady frequency closed loop control.
通过对控制信号的调整,系统可实现变压、变频、稳压、稳频的闭环控制。
A kind of medium voltage AC variable frequency control system, which consists of voltage source inverter, sinuous filter and stepup transformer with variable frequency, is introduced.
介绍一种采用低压电压型变频器、正弦波滤波器和变频升压变压器构成的低-高式中压变频控制系统。
The medium voltage variable-frequency controller is developed for the variable-frequency against the existing problem during application of submersible pump.
潜油电泵中压变频控制器是针对潜油电泵在应用中存在的问题而研制开发的变频调速控制装置。
The frequency inverters has a function of variable voltage and variable frequency.
频率逆变器具有变压、变频功能。
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 issue, a device of variable velocity variable frequency on medium-high voltage three-level is developed to reduce energy consumption and improve the cost-effective for the previous problems.
针对这些问题,本课题研究开发了一种中高压三电平变频调速装置,降低电机的能耗、提高系统的性价比。
Variable voltage and variable frequency system based on vector control is applied widely in high speed train.
基于矢量控制的变压变频调速在高速列车中得到广泛应用。
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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