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直流环节
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  dc link
     Analysis and implementation of 48V/3KVA forward DC link soft-switching static inverter
     48V/3KVA正激直流环节软开关静止变流器的分析与实现
短句来源
     Soft Switch PWM DC DC Converter with Resonant DC Link
     带谐振直流环节的PWM软开关DC-DC变换器
短句来源
     Principle Analysis of SPWM High-frequency Pulse DC Link Inverter
     SPWM高频脉冲直流环节逆变器的原理分析
短句来源
     This paper researches two types of soft-switching inverters――Quasi-Resonant DC Link(QRDCL) inverter and Zero-Current-Transition (ZCT) inverter.
     软开关逆变器主要有两类典型拓扑类型――谐振直流环节逆变器和极谐振型逆变器。 本文分别对这两类逆变器中的拓扑――准谐振直流环节(QRDCL)逆变器和零电流转换(ZCT)逆变器进行了研究。
短句来源
     A prototype for 3000VA 27VDC/115V400HzAC three-phase Aviation Static Inverter with High Frequency Pulse DC Link is designed and successfully developed.
     设计、研制成功了3kVA 27VDC/115V400HzAC三相高频脉冲直流环节航空静止变流器。
短句来源
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  dc-link
     A New Quasi-Resonant DC-Link PWM Inverter Using Single Switch for Soft Switching
     使用单开关元件实现软开关的新型准谐振直流环节PWM逆变器
短句来源
     Research on Two-amplitude Control Technique for Actively Clamped Resonant Dc-link Inverter
     有源箝位谐振直流环节逆变器的双幅控制技术研究
短句来源
     For suppressing the high turn-on and turn-off di/dt, the dead time, Min pulse width and the switching frequency are analyzed with the phase disposition pulse width modulation (PDPWM) applied. Furthermore, with the IGCT (5SHX14H4502) used, the DC-Link part of 6kV, 2500kW MVDs is designed. The simulation results confirm its efficiency and the MVDs with the proposed DC-Link passed 6kV tests.
     基于PDPWM调制方式,分析了限流电阻对死区时间、最小脉宽及开关频率对开通及关断di/dt的影响,并基于IGCT5SHX14H4502文中设计了6kV、2.5MW二极管箝位型三电平中压变频器直流环节,并通过了6kV高压试验的检验,仿真结果验证了所选参数的有效性。
短句来源
     The Research of Resonant DC-Link Inverter
     谐振直流环节逆变器的研究
短句来源
     This paper presents a new quasi-resonant dc-link(QRDCL) inverter.
     介绍一种新型准谐振直流环节(QRDCL)逆变器。
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  “直流环节”译为未确定词的双语例句
     Under the test conditions of Ud=2800V and 350Hz switching frequency, the current in three phase inverting test reached to lOOOAr.
     在中间直流环节电压U_d=2800V,开关频率为350Hz的条件下,逆变的试验电流达到了1000Ar.
短句来源
     A prototype for 3kVA 27VDC/115V400HzAC parallel aviation static inverter system using a common voltage regulator with three-state DPM hystersis current control is designed and successfully developed.
     设计并研制成功了3kVA 27VDC/115V400HzAC共用电压外环三态DPM电流滞环控制并联高频脉冲直流环节航空静止变流器样机。
短句来源
     In this paper the mathematics model of matrix converter fed motor drive system in the static plane based on the fictitious link concept is given and the model of the drive system based on space vector modulation by means of Matlab/Simulink is discussed.
     把矩阵变换器与感应电机视为一个整体,建立了基于虚拟直流环节思想的矩阵变换器馈电电机驱动系统在两相静止坐标系中的动态数学模型,利用Matlab/Similink建立了基于空间矢量调制策略的矩阵变换器馈电电机驱动控制系统仿真模型并进行了仿真研究。
短句来源
     Reducing switching loss and raising switching frequency can be realized by employing a novel and simple DC-Rail ZVT inverter circuit. This soft-switching technique is applied in direct torque control system.
     利用一种控制简单的直流环节零电压过渡(DC-Rail ZVT)软开关逆变电路,可以大大减少开关损耗、提高开关频率,从而考虑将此软开关电路应用于异步电机直接转矩控制系统中.
短句来源
     The results of the simulation and experiments (with output power of 2 7kW) provided in the paper have shown that the new inverter has many merits.
     仿真结果和实验结果 (2 7kW )证明了这个电路优于谐振型直流环节型逆变器
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  dc link
A novel method for assessing the PWM information and measuring the motor phase currents by a dc link current sensor is proposed.
      
This paper presents a technique for realizing PAM capability in the case of a resonant dc link three phase inverter equipped with GTO thyristors.
      
A new quasi resonant dc link circuit together with a sinusoidal PAM for an inverter fed drive are proposed in order to reduce the power losses in the machine and in the inverter.
      
The power circuit is made up from two PWM converters which share a common dc link without the need of dc power supplies.
      
The presented method for the calculation of 3-phase AC systems with DC link indirect converters is based on the perception that the stationary operation of converter systems can be treated as a periodic sequence of similarly transient processes.
      
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  dc-link
It realizes suppression of inverter neutral-point potential variation by accurately modifying redundant factor of small vectors pairs, only requiring information of DC-link capacitor voltages and three-phase load currents.
      
This paper describes a new control method for the integrated of six current rectifiers-seven-level diode-clamped inverter feeding induction motor considering dc-link capacitors voltage balancing problem.
      
The performance of dc-link voltages control is evaluated in comparison to the conventional PI control scheme.
      
A simple and efficient current regulator design of grid inverter assures a fast disturbance rejection resulting in low dc-link ripple voltage.
      
A grid inverter is interfacing the dc-link to the grid.
      
更多          


A computer simulation model has been set up to study a variable speed drive system for self-controlled synchronous motors. The research is focused on the simulation of the DC link current transient and speed changes under different operating conditions. such as starting. speed controlling, loading and unloading. etc. Experimental results show that the calculating errors about starting time and peak current during starting is less than 5%, and the current and speed curves agree well with the test results. It...

A computer simulation model has been set up to study a variable speed drive system for self-controlled synchronous motors. The research is focused on the simulation of the DC link current transient and speed changes under different operating conditions. such as starting. speed controlling, loading and unloading. etc. Experimental results show that the calculating errors about starting time and peak current during starting is less than 5%, and the current and speed curves agree well with the test results. It is verified that the simulation model and the programme used are correct. Tte simulation programme is simple and easy to use. and can be used on personal computers.

建立了自控式同步电动机调速系统的数字仿真模型。主要考查了在起动、变速、突加及突减负载情况下,系统直流环节的电流和电机转速的变化。试验表明:起动时间及电流幅值的计算误差小于5%,转速及电流变化曲线与实际情况基本吻合。证明数学模型和计算程序是正确的。提供的仿真程序简单实用,在PC机上即可运行。

This paper analyzes the operation principle and control strategies of single-phase Resonant DC Link Inverters (RDCLI), which is a new kind of resonant converter topology. With the help of a digital computer,a 1kW RDCLI is analyzed in a wide range of loads to understand its performance characteristics. Three control strategies are discussed and compared in details. In the Hysitresis Current Pulse-Modulation (HCPM) method,since +1, - 1 and 0 states may be freely chosen, a current error band is employed to select...

This paper analyzes the operation principle and control strategies of single-phase Resonant DC Link Inverters (RDCLI), which is a new kind of resonant converter topology. With the help of a digital computer,a 1kW RDCLI is analyzed in a wide range of loads to understand its performance characteristics. Three control strategies are discussed and compared in details. In the Hysitresis Current Pulse-Modulation (HCPM) method,since +1, - 1 and 0 states may be freely chosen, a current error band is employed to select the freewheeling state. The results show this method leads to a good dynamic response. In the other two kinds of control strategies, there are certain demerits. Only +1 and -1 states can be chosen in the current regulated delta modulation (CRAM) while only +1 and 0 states in the positive half cycle of the output voltage may be selected in Optimum Pulsemodulation (OPM) and - 1 and 0 states in the negative half cycle. Conclusion is drawn that HCPM is suitable for this new kind of inverter. Simulation and experimental waveforms are also presented in this paper.

本文分析了一种新型谐振变换器拓扑—谐振直流环节逆变器(RDCLI)的单相逆变器的工作原理和控制方法,利用计算机数字仿真得到了额定容量为1kW的逆变器在阻性、感性和容性负载下的各种动、静态特性波形。文中比较了三种不同的电流内环控制方案。由于滞环控制的脉冲调节方案可以自由地选择开关模态,即可以选择0,+1和-1模态,使输出电压能够很好地跟踪给定电压信号。而CR△M方案只能选择-1和+1模态。优化脉冲调节方案在输出电压的正半周和负半周分别只能选择+1和0或-1和0模态,其动态响应性能不好。仿真结果表明,滞环控制的脉冲调节方案适用于RDCLI。实验波形验证了数字仿真结果的正确性。本文为构成这种谐振逆变器提供了设计、分析基础。

Adding a resonance link to the traditional PWM inflexible switching circuit, a voltage-source inverter of high frequency and no switching less was formed. Compared with current PWM inverters, this circuit has the advantages of high frequency, low noise, low switching-loss, little system volume, low electromagnetic interference, quite good output wareforms and no need of damping circuit.

具有共振直流环节的电压型逆变器是在传统的PWM硬件开关电路上加一个共振环节,构成高频、无开关损耗电压型逆变器。这种电路与目前通用的PWM逆变器相比,具有频率高、噪音低、开关损耗小、系统体积小、电磁干扰小,有较好的输出波形和不需要阻尼电路等优点。

 
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