The control scheme and operating principle of a double closed-loop AC/DC power converter system are discussed by using physics.
从物理角度讨论了双闭环交/直流功率变换器系统的控制方案和工作原理。
Nuclear plants generally need ac power to operate the motors, valves and instruments that control the systems that provide cooling water to the radioactive core.
核电站需要现场电源提供动力操作马达、阀门和各项控制系统的仪表，而且还为反应堆堆芯的冷却水系统提供电力。
To describe the operating principle and control, this paper focuses on an example: a Z-source inverter for dc-ac power conversion needed in fuel cell applications.
以应用于燃料电池逆变功率变换的阻抗源逆变器为例，分析了其工作原理和控制方法。
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。
The problems are:the storage of cumulating variable at power off, multi-byte division, the detection of rotating speed and the control of facilities by AC power.
这几个问题是：累积量的掉电存储问题、多字节除法问题、转速的检测问题和交流电设备的控制问题。
The result indicates the nonlinear variable structure control can adjust the transmission power of DC line effectively, and assure the stability of the AC-DC system.
仿真结果表明，非线性变结构控制可以有效地调节直流线路的传输功率，保证交直流系统的稳定性。
According to driving requirements of hybrid electric vehicle (HEV), a novel high frequency AC hybrid power control system is presented.
根据混合型电动汽车的性能要求，提出了一种采用高频交流的混合动力控制系统。
The DC system is capable of rapid response to changes in control setting, with DC power transfer changes occurring faster than in AC systems.
由于直流传送功率的改变要快于交流系统，直流系统对控制整定值能迅速作出响应。
The current controller on the HVDC line can do AC/DC parallel tie-line local control or improve the stability of AC/DC hybrid power systems.
直流功率调制器可以对交直流联络线进行局部控制或改善交直流混合系统的运行特性。
The AC-DCAC voltage source inverter composes the main circuit of this variable frequency system and CPLD is the logic control device of the power device (IPM).
该变频调速系统主电路采用交-直-交形式，以(CPLD)作为调速系统逆变电路功率开关器件(IPM)的逻辑控制器件。
Then both control scheme and operating principle of a double closed loop AC/DC power converter system are discussed by using physics.
在此基础上，提出了双向AC／DC功率变换器的一种双闭环系统控制结构，并从物理概念出发讨论了系统的工作原理。
The control methods and strategies of the AC electronic load based on modern power electronic technology are studied in this paper.
研究了基于现代电力电子技术的交流电子负载的控制方法和策略；
In this thesis, all kinds of SPWM control styles for inverters are studied, witch is the base for researching and developing a 2kw multi-function AC excitation power successfully.
本文对逆变器的各种SPWM控制方式进行了研究，并在此基础上成功研制出一台2k w多功能交流励磁电源。
In the system, Intel 80c196mc is used as control center and IPM is used as an intelligent power device in the main circuit of AC DC AC voltage type inverter.
该系统以80c 196MC为控制核心，采用IPM智能功率模块为功率元件，组成了交直交电压型逆变器主回路。
A control method of AC side harmonic current detection, based on the keystone analyzing of the parallel hybrid power filter, has been put forward in the study.
在对混合电力滤波器的原理分析基础上，提出了检测交流侧谐波电流的控制方法。
A downlink admission control (ac) algorithm is proposed in code division multiple access (CDMA) systems, that is based on multi-cell transmitted power raised estimation.
提出了一种在码分多址(CDMA)系统中，基于多小区功率增长估计的下行接纳控制(AC)算法。
The hardware of permanent magnet AC servo system is designed, including system power main circuit, system control circuit and auxiliary circuit.
设计了永磁交流伺服系统硬件电路，包括系统功率主电路、系统控制电路和辅助电路。
In this paper, the AC-DC-AC structure commonly used in wind turbine is introduced, and introduce the concept of power balance control.
本文结合风力发电机组中常用的交直交结构，将功率平衡概念引入并网变流器控制。
The robust adaptive control law is proposed for a HVDC power modulation controller of the interconnected AC/DC power system.
设计了应用于交直流互联电力系统的直流功率调制的非线性鲁棒自适应控制器。
A DC voltage outer loop control for power balance and PI correction and an ac current inner loop control for feedback are designed to ensure the current quality and stabilize the DC voltage.
通过直流电压外环的功率平衡控制及比例积分校正，配合内环并网电流反馈控制，使并网逆变器在保持并网电流质量的同时更好地控制直流电压。
In this paper, a back-to-back PWM converter is considered as the optimum scheme of ac excitation power supply and its operation principle and control strategy are discussed in detail.
在分析了其他变频器的局限性后，指出了双PW M变频器是交流励磁的最佳电源方案，详细地讨论了电压型双pw M变频器的工作原理与控制策略。
The optimal design of HVDC control and protection parameters in the case of large-scale ac and DC power system network is a valid measure to ensure achieving good transient and stable performance.
对大规模交直流网络下的高压直流控制保护系统进行参数优化设计，是保证灵活交流输电系统暂态性和稳定性良好的重要手段。
AC electrical dynamometer is a key equipment of engine power-test system, whose load is mainly regulated by the excitation control system of electrical dynamometer.
交流电力测功机是发动机测功系统的重要设备，励磁控制系统是测功系统负载调节的主要控制装置。
Analytical results show that using the presented method the robustness of control system and the stability of AC power transmission system are improved.
分析表明这种控制方法提高了交直流输电系统的稳定性及控制系统的鲁棒性。
This thesis does some corresponding researches and application works for the Tracking-Control System, the Thermoelectric Converter, the Electric Power Transducer and the AC Stabilizer of the system.
本文主要针对碟式太阳能热动力发电系统中的跟踪控制系统、热电转换装置、电力变换装置和交流稳压装置做了一些相应的研究和应用工作。
A new excitation control strategy is proposed for the rotor side converter in an AC excited wind-power generator to allow the system to ride through the grid short-circuit fault.
提出一种电网短路故障时保持交流励磁风力发电机不脱网运行的新型励磁控制策略。
The principle of PAM PWM compound control and the power transistor AC adjustable speed system based on that principle are presented in this paper.
本文介绍PAM、PWM复合控制原理和按此原理研制的大功率晶体管宽调速交流调速系统。
A new way to generate stable ac current is found with feed back control system by single chip microcomputer. So a new high power ac current regulator is developed.
再用单片机组成反馈控制系统，从而找到了交流稳流的新方法，研制出一个大功率交流稳流电源。
A new way to generate stable ac current is found with feed back control system by single chip microcomputer. So a new high power ac current regulator is developed.
再用单片机组成反馈控制系统，从而找到了交流稳流的新方法，研制出一个大功率交流稳流电源。
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