This paper presents a new control strategy to eliminate second harmonic of dc output current in the 3-phase unbalanced network voltage PWM current-source converters (CSC).
提出一种电网电压不对称情况下抑制三相脉宽调制(PWM)电流型变流器(CSC)直流输出电流二次谐波、减少网侧电流低次谐波的控制方法。
By getting the direction function from the output AC current, the applied time of voltage vectors in one PWM period was chosen, the direction of central current was controlled for DC voltage balance.
该方法通过实时检测三相交流输出电流方向得到方向函数,利用该函数选择一个PWM周期内不同电压矢量作用时间来控制中点电流的方向,实现电压平衡。
Pulsed operation also allows these instruments to output current levels well beyond their DC capabilities.
这类仪器在脉冲操作模式下还能够输出大大超出其直流能力的电流值。
The stability of voltage and current output from HV DC power supply is very important for generating a stable HV electric field.
直流高压电源输出电压和电流的稳定性,对产生稳定的电晕电场极为重要。
The stability of voltage and current output from HV DC power supply is very important for generating a stable HV electric field.
直流高压电源输出电压和电流的稳定性 ,对产生稳定的电晕电场极为重要。
MPS700 series dc voltage constant-current power supply, is designed by using linear series MOSFET control mode of the ac input dc output power.
MPS700系列直流稳压稳流电源,是采用MOSFE T线性串联调整方式设计的交流输入直流输出电源。
Also, optimized SAPWM modulation wave has been utilized, improving the utility ratio of DC voltage and restraining effectively the output harmonic current of inverter.
并采用优化的SAPWM调制信号,提高了直流电压的利用率,并能有效地抑制逆变器输出的谐波电流。
The AAT3177 is a high output current, high efficiency, low noise, low profile Charge Pump DC/DC converter.
AAT3177是高输出电流,高效率,低噪音,低姿态电荷泵DC/ DC转换器。
The power can output several kinds of welding current such as variable polarity square wave AC, DC and pulse current etc.
该电源可实现变极性方波交流、直流、脉冲电流等多种输出。
The 600a dc standard current source is designed in this paper, which can output 10 ~ 600a dc current.
介绍600A直流电流标准源具有10 ~ 600 A直流标准电流输出能力。
DC model of SOI MOSFET including output current model and threshold voltage model is proposed in this paper. The velocity saturation effect is considered.
本文首先建立了一个SOIMOSFET器件的直流漏电流模型和阈值电压模型,模型考虑了速度饱和效应。
Secondly, the DC voltage loop and inner current closed-loop control method, both to ensure zero static error of the inverter output, but also to ensure that the inverter output waveform.
其次,本文采用直流电压外环、电流内环的双闭环控制方法,既保证了逆变器输出的静态误差为零,又保证了逆变器良好的输出波形。
This lack of static, DC offset current in the output transformer means that the core can be made smaller, because it requires no air gap to prevent core saturation from the static DC offset current.
这种缺乏静态,直流偏移电流输出变压器的核心手段,可更小,因为它不需要空气间隙,以防止核心饱和从静态直流偏移电流。
Derived the formula for computing quadratic harmonics of output current in the single phase unit power factor ac DC converter based on analysis of the circuit module of the equivalent current source.
在基于对等效电流源电路模型分析的基础上,推导出了单相单位功率因数变流器输出电流二次谐波的计算公式,将输出二次谐波电流正、反向交替注入交流输入侧来抵消电流中的谐波。
A new PWM control method for GTR current source rectifier is presented. The mathematical formulae that output voltage of the rectifier and inductance of the DC filter are derived.
提出了一种新的适合于GTR电流型变频器整流器部分的PWM控制方法,推导出了在准圆轨迹PWM控制规律下,整流器输出电压的计算公式和平波电抗器电感量计算的实用公式。
This paper analyzes the effects of the input and output decoupling capacitances on the grounding current EMI in DC motor drives.
本文针对直流电机调速装置输入和输出侧退耦电容对地电流干扰的影响进行研究。
By digital adjustment with high precision on the DC bias of reference sine wave, the DC bias contained in inverter output voltage can be adjusted to restrain DC circulating current.
通过对逆变器基准正弦波直流分量的高精度数字调节,相应调节逆变器输出电压直流分量以抑制直流环流。
An electronics transformer rectifier unit(TRU)with the output of 28.5V/100A DC is developed by using a novel phase shifted zero voltage and zero current switching PWM converter topology.
采用一种新型移相控制零电压零电流开关PWM全桥变换器拓扑,研制成2 8.5V/10 0A的航空电子变压整流器。
P. S. :The peak current or power should be tested when other output of DC overshoot rated load, and the peak current pulse widens within 100ms.
峰值电流或功率的测试是在其它额定负载时测试,且脉宽小于100毫秒。
For a parallel inverter system without output isolating transformers, discrepancy in DC biases contained in the output voltage of each module can cause large DC circulating current among inverters.
对于无输出隔离变压器的逆变器并联系统,各模块输出电压直流分量不一致会在模块间产生较大的直流环流。
For the parallel inverter system without output isolation transformers, the difference of DC components of the output voltage can cause large DC loop-current among modular inverters.
对于无输出隔离变压器的逆变器并联系统,各模块输出电压直流分量不一致会在模块间产生较大的直流环流。
Input out-phase, Output out-phase, input under-voltage, DC over-voltage, over-current, over-load, current stall, over-heat, external disturbance.
输入缺相,输入欠电压,直流过电压,过电流,过载,电流失速,过热,外部干扰等。
Monitor every feed-voltage and feed-current of DC output, every output state of switch, and state of fuse and lightning arrester. Under abnormal condition, monitor produces aural and visual alarm.
监测各直流馈电输出的电压、电流,各馈电输出开关状态、熔断器状态和防雷器状态,当发生异常情况时发出声光报警;
Secondly, this dissertation educes the promising topologies for isolated low-voltage high-current output DC/DC converters by analyzing and comparing the basic topologies of the DC/DC converters.
本文分析了DC/DC变换器一些基本拓扑的结构及其特点,对隔离式DC/DC变换器原边和副边拓扑进行了分析和比较,得出了隔离式低压大电流输出DC/DC变换器的优选拓扑结构。
Secondly, this dissertation educes the promising topologies for isolated low-voltage high-current output DC/DC converters by analyzing and comparing the basic topologies of the DC/DC converters.
本文分析了DC/DC变换器一些基本拓扑的结构及其特点,对隔离式DC/DC变换器原边和副边拓扑进行了分析和比较,得出了隔离式低压大电流输出DC/DC变换器的优选拓扑结构。
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