主发电机的开环时间常数会对建压过冲产生影响,而输出直流电压的上升速度也是一个重要因素。
The open loop time constant of the main generator influence the overshooting evidently. The important factor is the rising speed of the output DC voltage.
文章对一种只检测交流输入电压而不需要检测输出直流电压的简化单相pfc变换器进行了理论分析和研究。
It theoretically analyzed and studied a simple DC voltage sensorless single APFC converter by detecting an AC line voltage in the paper.
另外,还对滤波器的结构和参数对输出直流电压脉动和发电机相电流波形的影响及相电流谐波进行了仿真分析。
In addition, the thesis analyzes the influence of the filter structure and parameters on the output DC voltage ripple and the shape of phase currents, as well as harmonics of phase currents.
开关电源经试验验证性能良好,直流电压输出纹波不大于0.3%,效率高于85%。
The variety of the output DC voltage is less than 0.3% and the efficiency is higher than 85%.
本文介绍一种新型的直流开关电源,该电源是一种直流电压输入,三种直流电压输出,并能够达到相当高的效率。
A new type of DC switch power which is possessed a DC voltage input and three DC voltage output, and is able to reach higher efficiency has been introduced in this paper.
提高直流电压利用率可以提高逆变器的输出能力。
Increasing the efficiency of DC voltage can be helpful to increase the output voltage of the inverter.
SVPWM具有较高的直流电压的利用率,开关损耗小,从而实现了高性能的逆变输出。
SVPWM technique have many good qualities, such as less pulsating torque, high usage of DC bus voltage, less switching loss, better high-speed regulation performance.
在电子技术中,把交流电转换成低电压直流电的一种电路。这种电路的输出是经过调整的,使它的噪声及电压波动都很。
In electronics, a circuit for converting AC voltage to low voltage DC in such a way that the output is regulated to minimize noise and voltage fluctuation.
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。
Also, optimized SAPWM modulation wave has been utilized, improving the utility ratio of DC voltage and restraining effectively the output harmonic current of inverter.
交流发电机输出的直流电动势会有较大的脉动电压。
The DC electromotive force output by AC generator can have quite big pulsating voltage.
通常采用控制晶闸管的导通角,而得到输出连续可调的直流电压。
Usually, the output voltage for continuous adjustment was obtained by controling turn-on angle of thyristor.
由于直流电压源的钳位作用,交流侧输出电压波形为矩形波,并且与负载阻抗角无关。
Because the clamp effect of DC voltage source, AC side output the rectangular wave voltage waveform, and it has nothing to do with the load impedance Angle.
为了给智能仪表提供廉价标准电流信号输出接口,可以使用RC低通滤波器,从PWM中分离出与占空比成正比的线性直流电压信号。
To provide intelligent instruments with the cheap interface of the standard current sign, the RC low pass filter is used for producing a voltage signal which is proportion to PWM's duty rate from PWM.
本文详细分析了在异步调制下,直流电压的二次脉动对逆变器输出电流以及电机转矩的影响。
This paper analyses the influence of the rippled DC voltage to the output voltage of the inverter and the motors.
该方案能在80 ~ 265V宽输入电压范围内得到稳定直流电压输出,具有效率高、总谐波畸变率低、功率因数接近为1等特点。
It can achieve a fixed output of DC voltage in the universal input range of ac 80 ~ 265 V. It owns the advantages of high efficiency, low total harmonic distortion, PF near to 1.
将LVDT输出加在同步稳压器上,跟随一个低通滤波器,产生直流电压送至adc或直接驱动模拟反馈控制系统。
Applying the LVDT's output to a synchronous rectifier followed by a lowpass filter produces a dc voltage that can feed an ADC or directly drive an analog feedback-control system.
喷油梁结构型式与直流电源输出电压是影响静电涂油的主要因素。
The structure type of spurting oil beam and the output voltage of DC power were the main factors affecting the electrostatic oiling.
此直流电压经过LM 7805的稳压和C3的滤波便在稳压电源的输出端产生了精度高、稳定度好的直流输出电压。
The dc voltage after LM7805 on voltage stability and C3 filtering was manostat an output terminal of the produced high precision, stability good dc output voltage.
分压电路通过电阻分压对来自直流电源的直流输出电压进行分压,由此,施加与电极分别对应的直流输出电位。
The voltage dividing circuit USES the voltage dividing resistors to divide a DC output voltage from a DC power supply, thereby applying DC output potentials to the respective electrodes.
直流电压表pa 2:指示设备输出的二次侧直流电流。
DC voltmeter PA2: the secondary DC current exported by indicating device.
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。
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.
两种形式的输出幅度可以通过改变直流电源电压或通过改变脉冲宽度(脉宽调制pwm)来控制。
Output amplitude in both modes can be controlled by varying the DC source voltage or by varying the pulse-width (pulse-width modulation, PWM).
通过电压闭环调节,实现了输出恒定110V直流电压的功能。
By adjusting under voltage regulation loop, it achieves the function of providing stable 110v DC output.
针对统一潮流控制器在逆变变换过程中所具有的直流侧电压不断波动的特点,提出了动态SPWM方法,以克服逆变电源的直流电压波动对SPWM法的逆变输出的精确性所造成的影响。
Taking account of the voltage floating of the DC side of Unified Power Flow Controller in working process, a dynamic SPWM method is proposed, to promote the accuracy of the output of the inverter.
针对统一潮流控制器在逆变变换过程中所具有的直流侧电压不断波动的特点,提出了动态SPWM方法,以克服逆变电源的直流电压波动对SPWM法的逆变输出的精确性所造成的影响。
Taking account of the voltage floating of the DC side of Unified Power Flow Controller in working process, a dynamic SPWM method is proposed, to promote the accuracy of the output of the inverter.
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