基于DSP28335的电能质量监测系统设计

利用DSP控制器运算能力强、精度高、硬件资源丰富等特点,设计了以TMS320F28335为核心的双DSP结构电能质量监测系统,并给出了采样电路、CAN通信等电路图及系统软件流程,介绍了上位机软件设计方案和电能质量分析方法。试验结果表明,采用双DSP结构系统及C语言和汇编语言混合编程的方法,提高了监测系统的实时性和可靠性。     

Implementation and test results of a generalized self-tuningexcitation controller

A self-tuning excitation controller performing the functions of AVR (automatic voltage regulation) and stabilization, and an interactive man-machine interface have been implemented using two microcomputers. The general setup of the hardware and software are described. Results of experimental tests on a physical model of a power system are also presented. The results demonstrate the effectiveness of the adaptive controller     

Adaptive supervisory control strategy of a fuel cell/battery-powered city bus

This paper presents an adaptive supervisory control strategy for a fuel cell/battery-powered city bus to fulfill the complex road conditions in Beijing bus routes. An equivalent consumption minimization strategy (ECMS) is firstly proposed to optimize the fuel economy. The adaptive supervisory control strategy is exploited based on this, incorporating an estimating algorithm for the vehicle accessorial power, an algorithm for the battery charge-sustaining and a Recursive Least Squares (RLS) algorithm for fuel cell performance identification. Finally, an adaptive supervisory controller (ASC) considering the fuel consumption minimization, the battery charge-sustaining and the fuel cell durability has been implemented within the hybrid city buses. Results in the “China city bus typical cycle” testing and the demonstrational program of Beijing bus routes are presented, demonstrating that this approach provides an improvement of fuel economy along with robustness and ease of implementation. However, the fuel cell system does not leave much room for the optimal strategy to promote the fuel economy. Benefits may also result in a prolongation of the fuel cell working life, which needs to be verified in future.     

水库自动化管理信息系统

介绍了水库自动化采集与控制管理信息系统的设计方案,包括系统的结构及功能,硬件设计,系统的采集与控制、软件设计以及开发工具选择等。     

挖掘机器人柴油机油门控制系统

自行设计和研制了一种挖掘机器人柴油机油门电子控制系统，能实现柴油机三种工作模式选择和自动怠速功能，并在系统软件设计和硬件设计两方面采取措施，提高系统的可靠性，使用结果表明，系统完全达到了设计要求。     

Power management and design optimization of fuel cell/battery hybrid vehicles

Power management strategy is as significant as component sizing in achieving optimal fuel economy of a fuel cell hybrid vehicle (FCHV). We have formulated a combined power management/design optimization problem for the performance optimization of FCHVs. This includes subsystem-scaling models to predict the characteristics of components of different sizes. In addition, we designed a parameterizable and near-optimal controller for power management optimization. This controller, which is inspired by our stochastic dynamic programming results, can be included as design variables in system optimization problems. Simulation results demonstrate that combined optimization can efficiently provide excellent fuel economy.     

活塞热疲劳模拟试验技术的自动控制系统

本文介绍了一种由可编程控制器（PLC）和PC机械成的活塞热疲劳模拟试验自动控制系统。具体介绍了系统的硬件、软件结构和设计要点。实际应用证明,该系统具有较高的可靠性和自动化水平。     

A fuzzy logic based supervisory controller for an FC/UC hybrid vehicular power system

Depending on growing concerns on energy crises and environmental issues, fuel cell (FC) powered electrical vehicles are favored for possible substitute to conventional internal combustion engine (ICE) based vehicular systems. However, the typical power profile of an automobile motor consisting of transients is not suitable for the use of a sole FC system for vehicle propulsion. This shortcoming could be partly overcome by hybridization. Two potential benefits of combining an FC system with an energy storage unit, ultra-capacitor (UC) has been presented in this study. Firstly, the durability of the FC system could be improved because the additional energy source can fulfill the transient power demand fluctuations. Secondly, the ability of the energy storage source to recover braking energy enhances the fuel economy greatly. An important aspect in designing a hybrid power structure is to find a suitable control strategy that can manage the active power sharing and take advantage of the inherent scalability and robustness benefits of the hybrid system. An integrated procedure for mathematical modeling and power control strategy design for an FC/UC hybrid vehicle is presented in this paper. A fuzzy logic supervisory controller based power management strategy that secures the power balance in hybrid structure, enhances the FC performance and minimizes the power losses is proposed. The main contribution of this paper apart from the previous studies of the authors is the modeling of the complete FC power system with air supply compressor and the integration of the control of the FC system internal dynamics (especially the oxygen excess ratio) into the overall supervisory control structure to maximize the efficiency and durability. To demonstrate the effectiveness of the proposed power management scheme, simulation studies were performed using MATLAB^®, Simulink^® and SimPowerSystems^® environments by integrating the detailed mathematical and electrical models of the hybrid vehicular system.     

基于无线网络的农业灌溉水电管理系统设计与应用

基于我国农业灌溉实际情况,采用无线组网技术提出了一种能满足远程自动抄表、自动计量及实现IC卡身份识别的农业灌溉水电管理系统,介绍了系统数据拓扑方式,阐述了水电控制器、通讯控制器及中心计算机在无线方式下的数据传输模式和实现方法,设计了通讯控制器的硬件电路.试验结果表明,该无线传输网络在一定程度上满足了农业灌溉的需求,有实用性和推广价值.     

Predictive energy management for a wind turbine with hybrid energy storage system

Hybrid energy storage systems (HESSs) help mitigating the fluctuations and variable availability of certain renewable sources, such as wind power, as they can provide support in different time scales. Therefore, regulating their state-of-charge (SOC) becomes crucial to ensure that the hybrid system complies with generation commitments agreed in time-ahead markets despite subsequent unexpected wind speed variations. So far, research has been mainly targeted at avoiding extreme SOC situations in the storage devices, whereas the regulation of this parameter to specific values has often been disregarded. A novel approach is proposed in this work, where model predictive control (MPC) is used to regulate the SOC of a HESS under variable wind and grid demand scenarios. The MPC-based supervisory controller developed for the hybrid system has been implemented and simulated under different situations. This controller monitors the future variation of the SOC with the aim of having the HESS available to develop its assigned functions successfully. The results show that a proper regulation of the SOC in the HESS increases the capacity to manage the active power supplied to the grid by the hybrid system based on wind power, as well as the level of compliance with generation commitments established time ahead.     

基于复合控制的塔式太阳能跟踪控制装置设计

针对塔式太阳能热发电站中定日镜跟踪装置的跟踪精度不高、构建成本较大等问题,提出采用将遗传算法的选择机制与吸热塔能量变化的反馈机制相结合的方式对光热电站的太阳能跟踪控制系统进行改进.在光热电站的少数几台定日镜上配备光电检测元件,并以其控制角度为基准控制其他定日镜的角度调整.采用DSP(digital signal processing)为控制核心,完成了跟踪控制器的通讯框架及控制系统的硬件电路设计.实验表明,该方案在保证光热电站整体控制精度的基础上,减少了光电检测元件安装数量和电站构建成本,并保证了视日轨迹跟踪控制时的自动调整能力.     

基于ZigBee的电能信息数据通信方法

ZigBee是一种基于IEEE802.15.4标准指定的短距离、低功耗的无线通信技术,具有低复杂度、自组织、低功耗、低成本的特点,可以灵活地结合嵌入式技术并广泛应用于自动控制领域。文章针对电能信息采集的数据通信需求,对基于ZigBee通信的电能信息采集系统中采集终端与采集主站之间的电能信息数据传输方法进行了研究,给出了传输规则、应用协议单元协议的制定方法以及基于STM32F407与CC2530的采集终端的软硬件设计。实验证明通信稳定可靠,电能信息数据的传输效率得到了提高。     

混合动力车发动机辅助控制单元开发

发动机工作区域优化是混合动力车实现节能的重要手段,应用新一代车用嵌入式控制芯片,开发了混合动力车发动机辅助控制单元,为混合动力车主控制器和发动机控制之间提供了控制接口.辅助控制单元能够完成发动机直接起停控制和发动机实时扭矩、功率控制等功能,并应用SAE J1939协议实现与主控制器之间的CAN通讯.试验结果表明,发动机控制接口设计合理,发动机转矩控制误差小,直接起停控制响应速度快,发动机辅助控制单元软硬件设计满足混合动力总成对发动机控制的要求.     

基于模糊解耦算法的电石炉控制系统设计

针对当前电石炉控制系统自动化程度低、故障率高、维护量大等一系列问题,设计了由PLC控制的电极自动控制系统。介绍了系统主要硬件配置、控制程序结构、监控组态画面设计。该系统采用模糊解耦算法,并根据现场工艺要求实现了由手动到自动之间的无扰切换。现场运行表明,该系统运行稳定可靠,操作方便,维护量小,对行业的生产进步起到示范和推动作用。     

热处理车间计算机监控系统开发

以组态王6.0为开发平台,利用日本岛电智能仪表、周波控制器、研华智能模块、晶闸管等组成硬件系统,对热处理设备实现了计算机监控,完成了电炉智能控制和PID调功功能,现场运行表明,本系统有控温精度高、炉温波动性小、设备自动化程度高的特点,实现了对热处理车间的集散控制.本系统具备485通讯接口功能,具有联网通讯和远程监视能力.     

面向电力信息物理系统协同控制的实时硬件控制器在环联合仿真平台

分布式协同控制算法已广泛应用于电力信息物理系统（CPPS）中,其仅需地理邻居节点间的本地通信即可完成设定的控制目标。但在复杂CPPS场景下评估分布式控制算法的性能,易受到被控物理目标特性和真实通信条件的影响。为了解决这个潜在的问题,本文提出了一种含硬件控制器在环的联合仿真平台,在RT-LAB实时仿真器中对CPPS物理侧...     

DMLHFLC (Dual mode linguistic hedge fuzzy logic controller) for an isolated wind–diesel hybrid power system with BES (battery energy storage) unit

Design of DMLHFLC (dual mode linguistic hedge fuzzy logic controller) for an isolated wind–diesel hybrid power system with BES (battery energy storage) unit is proposed in this paper. The design methodology is a hybrid model based on the concepts of linguistic hedges and hybrid genetic algorithm-simulated annealing algorithms. Dual-mode concept is also incorporated in this proposed controller because it can improve the system performance. The system is simulated and the results are compared with proportional plus integral controller and FLC (fuzzy logic controller). Sensitivity analysis and robustness of the controller is tested. The results prove the effectiveness of the proposed controller.     

厂级AGC机组负荷优化分配系统研究

针对我国目前电网的调度模式,提出了在自动发电控制(AGC)方式下的厂级负荷优化分配系统实现方案,该方案不改变电厂原有网络结构,直接在厂级监控信息系统中增加负荷控制节点,这样既不改变控制系统原有的各项功能,又使厂级负荷控制的投切比较灵活,大大增强了系统的稳定性。在优化算法上提出了遗传禁忌混合算法,以某电厂的3台机组为例,采用2008年负荷数据进行优化分配,并与实际分配进行对比,结果表明采用该算法进行优化分配后煤耗率下降了0.2g/(kW.h)～5.3g/(kW.h),对电厂节能降耗,提高经济效益有重要意义。     

基于OPC规范的火电厂监控信息系统研究

主要研究基于COM／DCOM技术的组件化程序设计思想,设计火电厂厂级监控信息系统。监控信息系统的通信接口,采用符合OPC规范的标准OPC接口（OPC客户程序和OPC服务器程序）,充分发挥OPC接口同一、开放的特性,为火电厂组成开放的、灵活的厂级监控信息系统提供了一种新的实现途径。     

System integration of a portable direct methanol fuel cell and a battery hybrid

This paper introduces a complete system-level design and integration of a portable direct methanol fuel cell (DMFC) system. We describe hardware and software design for the balance of plant (BOP) control, including a 32-bit microprocessor and electronics for actuators and sensors, focusing on reliable operation and protection of the DMFC system. Various BOP components are characterized to find the optimal design for better portability, reliability, and energy efficiency, and we suggest effective and robust design of control loops for them. We demonstrate a hybrid operation of the DMFC stack and Li-ion battery to maintain a constant stack output current regardless of the load current to maximize the performance. We emphasize the design of subsystems for power supply, measurement, actuator drive, and protection in detail. We verify the robust operation of BOP control against environmental changes such as orientation and pressure variations with an implemented control board.