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Stationary wavelet transform ; singular value decomposition ; fault of inverter ; classification

平稳小波变换；奇异值分解；逆变器故障；分类

The novel UHV-FTRTPS is composed of uncontrolled rectifier, H bridge inverter, step-up transformer and series resonant circuit.

整个装置由不可控整流电路、H桥逆变电路、升压变压器及串联谐振电路组成。

There is much high order harmonics from the inverter, so the high frequency model of the step-up transformer is established to study the influence of the stray capacitors.

同时由于变频器向该系统注入了大量的高频分量，为此建立了变压器高频分布模型，以评估变压器分布电容对全系统的影响。

Frequency AC-DC rectifier first, and then the inverter for AC 50 Hz, the step-up transformer into the local electricity company 11 kV power grid.

变频交流电先整流成直流电，然后逆变为50Hz的交流电，经升压变压器送入当地电力公司的11kV电网。

The keystone of this device as follows : input three phase AC power supply of 380V±15%, become DC after primary full-bridge commutation wave filter, convert high frequency AC pulse of over 20KHZ using IGBT inverter module, become DC power supply for the usage of producing ozone after step-up of High Frequency Transformer and commutation of quickness rectifier tube and reactor.

高频高压臭氧发生装置的基本原理是：输入380V±15%三相交流电源，经初级全桥整流滤波成为直流，通过IGBT逆变部件，转换成20KHZ以上的高频交流脉冲，再经高频变压器升压，最后由快速整流管、电抗器整定为可供发生臭氧用的直流电源。

Finally the down to date theory and technology, which is about parallel operation controlling in the modular inverter system, is discussed superficiality.

最后，本文对逆变电源系统运行中的环流产生及其特性进行了深入的分析。

It has following characteristics: full bridge inverter, PWM control, power superimposition, and rapid over-current protection.

该电源采用全桥逆变拓扑电路、PWM控制方式、输出功率叠加的方案，具有快速的过流检测与保护功能。

This paper discusses the design problems of the drive civcuit of the three-phase inverter with emphasis on reliability.

提出了对三相逆变器驱动电路的运行要求和设计方法，从而保证了器件的可靠运行。

Today, the next generation of this technology - AC TIG inverter - features three advanced squarewave technology capabilities.

今天，新一代的这种技术交流TIG焊变频三个特点矩形先进技术的能力。

It also analyzes the welding technology characteristics of inverter pulse TIG welding machine.

分析了逆变式脉冲TIG焊机的焊接工艺性能。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"