文中介绍了IGBT升压与降压式三相高频SPWM整流器的基本工作原理和控制方法。
This paper describes the basic working principles and control methods of three-phase high- frequency boost & buck IGBT SPWM rectifiers.
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。
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.
简要分析了峰值电流控制模式升压变换器的不稳定性及其原因，阐述了斜坡补偿的基本原理和设计问题。
Instability and reasons of peak current controlled BOOST converter are simply analyzed, basic principles of slope compensation and design problems are also expatiated.
文章介绍了应用超级电容作为手机电池的总体思路并重点介绍了其充电电路、升压电路和控制电路的设计。
The paper introduces the comprehensive idea of applying SuperCap in Mobile-telephone power and underlined the design of charge circuit, rising voltage circuit and control circuit.
系统硬件包括按钮开关输入电路、七段数码管输出电路、加热电路、升压电路以及波形控制产生电路。
The system hardware includes switch input circuit, seven segments LED output circuit, heating circuit and boost circuit.
本文最后对基于升压和限流控制方式的异步电动机软起动方法给出了具体实现方案。
This thesis finally provide a circuit based on increase voltage and limited-current soft-starter control method.
该系统包含升压和逆变两个环节，均采用电压外环、电流内环的双环pwm控制方式。
The two parts both adopt double loop PWM control mode which consists of outer voltage loop and inner current loop.
介绍了一种用普通开关电源专用集成电路控制块作为控制电路，以升压式变换器作为功率电路的功率因数校正电路。
Describes a power factor correction (PFC) circuit, in which the power circuit is a boost converter controlled general switch mode controller IC.
该电源由PWM高频升压斩波器及数字化控制SPWM逆变器组成，具有IGBT多重保护及机车抗emi特殊设计。
It consists of high frequency PWM boost chopper and digitalized SPWM inverter. It features IGBT multiple protection and special design for the protection of locomotive from EMI.
介绍了启动和停止过程断点设置及各断点实现的功能，阐述了机组升温升压过程中主要模拟量控制系统的全程控制策略。
The global control strategy of the main analog control system during the process of the unit's start-up is illustrated.
本文通过对电子、电气设备安全标准的理解和耐压试验的工作实践，对试验中存在的判定电流设定、升压速度控制、耐压试验结果判定和设备性能要求等问题进行了探讨。
Based on the understanding to the safety standards of electronic and electrical equipment and on the practice, this paper discussed the issues on setting the trip current, speed of rising H.
主要控制室升压，主阀关闭。
控制设备(30)使用反馈电压控制值来控制升压转换器(12)。
The control device (30) controls the voltage-up converter (12) using a feedback voltage control value.
通过三维叶型控制流动，提升压气机性能是压气机设计的重要方向，并在业界广泛使用。
Performce improvements obtained from 3d blading, which can provide more powerful flow control scheme, are widely recognized by the industry.
后接升压变压器，对其输出高电压进行调压-稳压控制。
Regulating the primary to voltage of a low voltage high current transformer . by which the output current can be regulated and stabilized .
后接升压变压器，对其输出高电压进行调压-稳压控制。
Regulating the primary to voltage of a low voltage high current transformer . by which the output current can be regulated and stabilized .
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