本文针对汽车照明系统的用电环境，分成三部分设计和分析了不同电压结构的驱动电源。
This paper aims at the surroundings of automobile light system, divided into three parts, designs and analyses drivers with different voltage structures.
介绍了一种用于制盐业三相交流电机的电流、电压和温度的智能保护系统的设计与实现。
This paper introduces the design and practice of intelligence protection system for the current, voltage and temperature of three-phrase ac motors.
该系统可以避免三相不平衡负载对逆变器输出电压的影响。
This system can avoid the influence that three-phase imbalance load towards the output voltage of inverter.
基于非线性系统反馈线性化理论，建立了三相电压型PWM整流器非线性模型，设计了一种非线性控制器。
Base on the feedback linearization theory for nonlinear systems, presenting a nonlinear model for three phase voltage source PWM and designing a nonlinear controller.
利用C8051F005单片机作为微处理器并基于其内部集成的ADC子系统，设计一种新型三相电压数据采集系统。
Based on ADC subsystem integrated in C8051F005 chip, a new kind of data acquisition system of three-phase voltage was designed, which acted as the microcomputer.
论述了中性点绝缘系统中采用的三相防谐振电压互感器的原理与结构，并指出了运行中容易发生的接线错误。
The principle and structure of the resonance-proof three phase voltage transformer used in the neutral insulation system are discussed. The connection errors brought about in operation are presented.
三相系统中，某的电压或电流与其它相不相同时，就出现幅值与或。
Unbalances appear in a three-phase system when voltages or currents differ from on phase.
分析了二维和三维可视化的关系，阐述了三维空间下电力系统可视化的方法，并验证了三维空间电压监视的有效性和优越性。
The relationship between the two parts is discussed and the effectiveness and superiority of power system visualization in three-dimensional space is presented and verified.
利用电力系统三相交流电压过零点和高速数字频率合成器解决了跳频系统中同步和快速频率合成的两个关键问题。
The zero-crossings of the AC voltage and digital frequency synthesizer are used in solving the two main problems in frequency hopping system-synchronization and fast frequency synthesizing.
对一个三相系统模型进行仿真，分析了感应电机动态负荷特性对系统电压稳定性的影响，并给出改善电机节点电压性能的措施。
The paper simulates a three-phase system, analyzes influence of induction motor dynamics on voltage stability, and gives methods to improve voltage stability of induction motor nodes.
通过采用状态反馈精确线性化方法，将三相电压型整流器非线性化模型转化为完全可控的线性系统布鲁洛夫斯基标准型。
Non-linearization model of three-phase voltage source rectifier is translated into the controlled linearity system(Brunovsky model) by the precise state linearity in the thesis.
在讨论电压源型高压直流输电（VSC-HVDC）的控制策略中，根据所给出的拓扑结构，建立三相静止系统下的数学模型；
According to the given topology of voltage source converter based HVDC system (VSC-HVDC), three-phases mathematic model in stationary frame is established.
通过对三相交流电压的测试试验，验证了该系统的可靠性，可为国产电源系统的设计定型提供依据。
The test on three phase alternating voltage has shown that this system has good reliable performances and can afford evidence for finalizing the design of power supply system made in our country.
三台航空静止变流器模块均为电压、电流双环控制，通过公用电压调节器稳定并联系统的输出电压及频率，同时产生统一的模块电流给定信号。
Each module is controlled by voltage current two closed loops. The common voltage loop controls system output voltage & frequency, and generates a common reference current signal.
为此，简单介绍了一套较完整的仿真系统，其中主要介绍了发电机组三相短路后电压、电流数学建模过程及图形化显示方法。
The paper mainly introduces a kind of stimulatior, It emphasizes on the mathematical mode! of three phase short circuit breakdown and its showing methods.
配电系统三相电压的不对称会对用户造成一系列不利影响。
Voltage unbalance of three phase ac distribution systems adversely affects power customers.
本文采用非线性控制策略对由三相电压型PWM整流器组成变流器系统的控制方案进行了设计。
This paper applies nonlinear control theories to design the controller for the converter system consisted of PWM rectifier.
仿真和实验结果表明该系统能够有效抑制三相整流电路交流侧输入电流的谐波，降低输出电压纹波，减小整机体积。
The simulation and experimental results show that this system can restrain harmonics of three-phase rectifier of AC-side input current, reduce the output voltage ripple and decrease the volume.
在三相逆变器驱动电机系统中，开关器件的PWM波导致了轴电压和轴承电流的产生，使电机受到危害，降低了电机的使用寿命。
In the three-phase inverter-fed motor drives, the switching devices'PWM waves generate shaft voltage and bearing current, and these make the motor's life shorter.
冲击性负荷会引起供电系统严重的电压波动和三相不平衡，对其进行平衡化补偿具有重要的意义。
It is important to provide balancing compensation for shock load because of the severe voltage fluctuation and 3-phase unbalance imposed on power supply system by it.
它涵盖五个方面：供电电压允许偏差、公用电网谐波、三相电压不平衡度、电力系统频率允许偏差、电压允许波动和闪变。
It covers five aspects: supply voltage tolerance, utility harmonic, three-phase voltage unbalance, power system frequency tolerance, voltage fluctuation and flicker.
介绍了三相电压型PWM整流器直接功率控制(DPC)系统的组成与原理，分析了开关表的形成机理。
The article introduces the direct power control (DPC) principle and constitution for three-phase boost - type PWM rectifiers and analyses switching table.
该系统主电路采用三电平PWM变频器，以16位单片机80 98为核心组成数字控制系统，并采用空间电压矢量法的控制方法。
The device uses three-level PWM transducer as the main electric circuit of the system, 16 bits CPU 8098 as the the core of the digital control system.
本文设计了一种三相电压电流谐波监测系统。
In this paper, an intelligent instrument is introduced for measuring 3-phase voltage, current and Harmonic.
本文设计了一种三相电压电流谐波监测系统。
In this paper, an intelligent instrument is introduced for measuring 3-phase voltage, current and Harmonic.
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