1、

In order to make more effective control of universal power quality controllers ( UPQC), an outer loop model for the voltage loop in a three-phase three-wire UPQC is proposed in the paper.

为了对通用电能质量控制器直流侧电压进行更为有效的控制,提出一种用于三相三线通用电能质量控制器(UPQC)直流侧电压控制的外环模型。

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2、

Using system zeroes and poles approach, analysis of voltage loop frequency compensation is also presented. Stability is realized through internal compensation.

本文还从零极点的角度对电压环路的频率补偿结构进行了分析,并利用内部补偿实现了稳定性设计。

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3、

based on the mathematical model of the three phase converter, the current loop and voltage loop control blocks were deduced and the control parameters were designed, which can be the reference of the grid connection pq control strategy for general dg unit.

其次针对并网模式下的三相变流器控制展开研究。建立了三相半桥变流器的数学模型,推导电流内环、电压外环的控制框图并进行设计,可作为通用并网PQ控制DG节点设计参考。

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4、

The dissertation builds up computer simulating model of voltage loop control.

建立了电压环控制的仿真模型.

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5、

Voltage Loop Judgement Method For The Three-phase and Three-cell Electric Energy Meter

三相三线电能表电压回路错误接线判别方法探讨

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6、

Outer loop is voltage loop which controls base time to assure arc length adjustment quickly in external disturbance through welding voltage feedback to reach arc length stable.

外环电压环通过弧压反馈控制基值时间来稳定弧长,保证电弧在焊接过程中遇到外界干扰能快速进行调节。

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7、

The basic principle of DSP digital control BOOST-PFC is presented. The small-signal power model of voltage loop and current loop is setup. The optimal parameters of control system are calculated in theory.

文中阐述了DSP数字控制BOOST-PFC的基本原理,建立了电压环、电流环的小信号功率模型,从理论上计算控制系统的最佳参数。

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8、

the small-signal model of voltage loop of three-phase pwm rectifier based on one-cycle control

单周期控制三相PWM整流器电压环小信号模型

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9、

The paper proposes a PFC voltage loop simulation model based on system modelling method.

提出了一种基于系统建模法的PFC电压环仿真模型.

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10、

According to the improved pulse compensation circuit, the relation between pulse compensation and crossover frequency of the voltage loop is analyzed, and the parameters of the voltage loop are optimized.

在优化的脉动补偿环节的基础上,分析了脉动补偿和电压环穿越频率的关系,对电压环部分的参数作了优化。

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11、

On this basis, according to the function and operational characteristics of the three-level inverter, the structure of the main circuit is determined. And the double loop control strategy, which consists of outer voltage loop and inner current loop.

在此基础上,依据三电平双向逆变器的特点确定其主电路结构,并采用电压外环、电流内环的双闭环控制策略。

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12、

The static operating current is only several μ A at 1.8 V~ 5.5 V supply voltage. The amplifier achieves an open-loop gain higher than 80 dB, and had high power supply rejection ratio ( PSRR) and high common mode rejection ratio ( CMRR).

电源工作电压1.8V~5.5V,静态工作电流仅为μA级,并具有80dB的开环增益、高电源电压抑制比和高共模抑制比等特点。

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13、

The adjustments of exhaust gas oxygen sensor voltage threshold value and fuel-air ratio during the X close-loop control process are introduced as well.

对λ闭环控制控制过程中氧传感器电压阈值调节和λ调节进行了初步分析。

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14、

The UPS System usually adopts PLL ( Phase Lock Loop) in the voltage control system, but when the load and power factor varies, the aberration influence induced by the voltage output wave is still not get a good solution.

目前,不间断电源逆变器通常采用锁相环的电压调节控制系统,但在负载及负载功率因数变化时,输出波形造成的畸变影响仍未得到很好的解决。

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15、

Experimental results show that the device can precisely measure many parameters of IOA, such as input offset voltage, input offset current, open loop differential AC voltage gain and AC common mode rejection ratio.

实验结果表明该测试仪能准确测量运算放大器的输入失调电压、输入失调电流、交流差模开环电压增益和交流共模抑制比等参数。

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16、

On the Relation Between Power Source Rejection Ratio, Open Loop Voltage Gain and Common Mode Rejection Ratio of an Operational Amplifier

运算放大器电源电压抑制比、开环电压增益和共模抑制比的关系

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17、

Design and Simulation of Double Closed-loop PI Regulator of Three-phase Voltage Source Rectifier Control System

PWM整流器的双闭环控制系统设计与仿真研究

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18、

The experiments of start-up stage and power-generation voltage regulator stage are carried out to test the current loop, obtain the motor mover position curve data and verify the stability of voltage adjustment.

进行了起动阶段和发电阶段电压调整情况的实验,测试了电流环,获得了动子位置曲线数据,验证了电压调整的平稳性。

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19、

It is shown that what affect the amplitude of pre-pulse voltage are the grounding inductance and the frequency of the charging loop circuit, which is determined by the secondary coil inductance of transformer and the capacitance of PFL.

研究表明由变压器副边电感和脉冲形成线电容构成的回路充电频率和接地电感的大小是影响预脉冲电压幅值的主要因素。

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20、

Constant Current/ Constant Voltage and Double Closed-loop Control System Made of TL 494

用TL494构成的恒流恒压双闭环系统

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