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2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)最新文献

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Power system stability studies including real hardware using phasor power hardware-in-the-loop technology 电力系统稳定性研究包括实际硬件采用相量电源硬件在环技术
R. Brandl, Juan Montoya, T. Degner, Diana Strauss-Mincu
The transition of the electric power system to integrate higher shares of decentralized generation brings new challenges with regards to ensuring system stability. These aspects are currently object of countless research activities in which component and system testing play a crucial role. Common praxis is that power system studies and component or system testing are performed separately. Technologies like power hardware-in-the-loop proved to be a good solution over the last decade to combine both kinds of investigations. To increase the functionality of hardware-in-the-loop systems and closing the gap between simulation studies and system testing, this paper presents an approach that combines phasor simulations and hardware-in-the-loop testing.
电力系统向分布式发电并网的转变对系统稳定性提出了新的挑战。这些方面是目前无数研究活动的对象,其中组件和系统测试起着至关重要的作用。通常的做法是,电力系统研究和组件或系统测试是分开进行的。在过去的十年中,像电源硬件在环这样的技术被证明是一种很好的解决方案,可以将这两种调查结合起来。为了增加硬件在环系统的功能,缩小仿真研究和系统测试之间的差距,本文提出了一种相量仿真和硬件在环测试相结合的方法。
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引用次数: 1
Smart whiteboard for interactive learning 交互式学习的智能白板
Andre Kellerman, Nicoloy Gurusinghe, Thilanga Ariyarathna, R. Gouws
The need for educators conveying information more interactively has increased as we are moving into a more technological era. A need for increasing the efficiency of lectures has become very important. This project addresses the need for improved efficiency in ways of presenting a class. The challenge is to provide an alternative and affordable way to chalkboards and passive Power-point or transparent slides obtaining more interaction from students and improving the efficiency of a lecture. Interactive whiteboard was made possible by using Nintendo Wii remote and PC suite. Replacing the conventional chalkboard makes viewing sessions at another time/place possible. The software suite developed enables any PC display to be used as an interactive whiteboard.
随着我们进入一个更加技术化的时代,对教育者以更互动的方式传递信息的需求也在增加。提高讲课效率的需求变得非常重要。这个项目解决了提高课堂呈现效率的需要。我们面临的挑战是为黑板和被动的ppt或透明幻灯片提供一种替代的、负担得起的方式,以获得更多的学生互动,提高讲座的效率。通过使用任天堂Wii遥控器和PC套件,交互式白板成为可能。取代传统的黑板使观看会议在另一个时间/地点成为可能。开发的软件套件使任何PC显示器都可以用作交互式白板。
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引用次数: 2
New concept of wireless power grid for industrial and home application 工业和家庭应用无线电网的新概念
Zhu Mao, Hua Han, Qi Zhu, M. Su, Tao Peng
The wireless power transfer(WPT) has been an emerging technology in power transmission, and most researches focus on Single Source Single Load(SSSL) system. The SSSL can satisfy the load power requirement, but the receiver side has low degree of freedom(DOF). Considering state of the art technologies in WPT, to realize both the requirements of power delivery and high DOF of receiver side in industrial and home applications, Multi Sources Multi Loads(MSML) system is considerable. This paper proposes a new concept of Wireless Power Grid(WPG), which can realize high DOF while satisfying the load power requirement. The mathematical model of WPG has been established. The main issue of WPG is the trade-off between the requirement of transferred power and the minimum of energy losses. A case of WPG with three orthogonal transmitter coils and one receiver coil is analyzed, the optimal currents of transmitter coils are derived through Lagrange Multiplier method.
无线电力传输(WPT)是一项新兴的电力传输技术,目前大多数研究都集中在单源单负载(SSSL)系统上。SSSL可以满足负载功率的要求,但接收端自由度较低。考虑到WPT技术的发展现状,多源多负载(MSML)系统在工业和家庭应用中既要满足功率传输要求,又要满足接收机侧的高自由度要求。提出了在满足负载功率要求的前提下,实现高自由度无线电网的新概念。建立了WPG的数学模型。WPG的主要问题是在传输功率的要求和能量损失的最小之间进行权衡。分析了一种具有三个正交发射线圈和一个正交接收线圈的WPG,利用拉格朗日乘法求出了发射线圈的最优电流。
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引用次数: 2
Friction compensation control for electric power steering systems 电动助力转向系统的摩擦补偿控制
Pan-Pan Du, H. Su, G. Tang
This paper considers friction compensation control problems for electric power steering systems (EPSs) of vehicle. According to the requirement analysis of vehicle assistant control, a mathematical model of EPSs is established, and a double closed-loop control system structure is proposed. Based on the assist characteristic of the desired steering wheel torque, we design a torque control law with mechanical friction compensator and a current control law and with electrical friction compensator respectively. Theory analyses shows the double closed-loop control system structure can make the output torque applied to the steering wheel at different mechanical friction torques are always close to the desired steering wheel torque, and the control laws with friction compensators can make starting steering wheel is smooth. Simulation results show the control system structure and the friction compensation control strategy are easy to implement and the control effect is better.
研究了汽车电动助力转向系统的摩擦补偿控制问题。在分析汽车辅助控制需求的基础上,建立了eps的数学模型,提出了双闭环控制系统结构。基于期望方向盘转矩的辅助特性,分别设计了带机械摩擦补偿器的转矩控制律和带电摩擦补偿器的电流控制律。理论分析表明,双闭环控制系统结构能使在不同机械摩擦力矩下施加到方向盘上的输出转矩始终接近期望的方向盘转矩,带摩擦补偿器的控制律能使方向盘起动平稳。仿真结果表明,该控制系统结构和摩擦补偿控制策略易于实现,控制效果较好。
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引用次数: 1
A distributed optimal active power control scheme for inverter-based islanded AC microgrids 基于逆变器的孤岛交流微电网分布式最优有功控制方案
Gang Chen, Zhiyong Li, Zhijun Guo
This paper presents a distributed optimal active power control strategy for inverter-based islanded AC micro-grid with both droop-controlled and PQ-controlled distributed generators (DGs). Each DG is considered as an agent which can exchange information with neighbouring agents through a distributed peer-to-peer communication network. A distributed economic dispatch (ED) algorithm with fixed-time convergence is proposed to calculate the optimal active power references for each DG and the algorithm is rigorously proved by applying Lyapunov theory. Based on the ED references, the key parameters of droop controller and PQ controller are updated in real time, which makes each DG track the corresponding optimal active power reference. The frequency of islanded microgrid is automatically restored to the nominal value. Simulation results are provided to illustrate the effectiveness of the proposed distributed control strategy.
提出了一种具有下垂控制和pq控制分布式发电机的基于逆变器的孤岛交流微电网的分布式最优有功功率控制策略。每个DG被认为是一个代理,它可以通过分布式的点对点通信网络与相邻的代理交换信息。提出了一种固定时间收敛的分布式经济调度算法,用于计算各发电机组的最优有功参考,并应用李雅普诺夫理论对该算法进行了严格证明。基于ED参考,实时更新下垂控制器和PQ控制器的关键参数,使各DG跟踪相应的最优有功参考。孤岛微电网的频率自动恢复到标称值。仿真结果验证了所提出的分布式控制策略的有效性。
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引用次数: 2
SPV grid interfaced system with reduced switch converter for power quality improvement 采用简化开关变换器的SPV电网接口系统,改善电能质量
Nidhi Mishra, Bhim Singh
In this paper, a packed U-cell (PUC) based converter is connected to the solar photovoltaic (SPV) system. Here, every cell shaped in U consists two active power switches and a DC supply in between them. Whereas in one U-cell, PV array is used as dc supply and in another U-cell, a capacitor is used in between two power switches, correspondingly. Switch reduction is the prime attribution in this topology as compared to conventional multilevel topology. Here dc link voltages are determined where the value of upper half U-cell gives full range and lower half give one-third of upper portion. It decreases the complexity in the topology and also in control approach to make it a viable option. Here, switching pattern is also different from conventional multilevel converter, which is applied to the grid interfaced system. The maximum power point tracking (MPPT) is achieved using an incremental conductance method (INC), whose rate of convergence is fast. Moreover, its feasibility makes appropriate as the single stage based system, which reduces the overall cost of the system by using less number of switches to get desired levels in voltage. The decrease in multiple stage in turn, helps to improvise the overall impact of the system. Power quality analysis is carried out in order to determine the validation for an IEEE-519 standard.
本文设计了一种基于u电池(PUC)的变换器与太阳能光伏(SPV)系统相连接。这里,U形的每个单元由两个有源电源开关和它们之间的直流电源组成。而在一个U-cell中,PV阵列用作直流电源,在另一个U-cell中,在两个电源开关之间相应地使用电容器。与传统的多层拓扑相比,开关减少是该拓扑的主要属性。这里确定直流链路电压,U-cell上半部分的值为全量程,下半部分的值为上半部分的三分之一。它降低了拓扑和控制方法的复杂性,使其成为可行的选择。在此,开关模式也不同于传统的多电平变换器,应用于电网接口系统。最大功率点跟踪(MPPT)采用增量电导法(INC),其收敛速度快。此外,其可行性使其适合作为单级系统,通过使用较少数量的开关来获得所需的电压水平,从而降低了系统的总体成本。在多个阶段依次减少,有助于即兴发挥系统的整体影响。电能质量分析是为了确定IEEE-519标准的有效性。
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引用次数: 2
Experimental battery monitoring system design for electric vehicle applications 应用于电动汽车的实验性电池监测系统设计
S. M. Salamati, Cong-Sheng Huang, Bharat Balagopal, M. Chow
Li-ion batteries are considered as main energy sources for next generation of transportation systems. This paper presents a systematic way to design an efficient hardware testbed for Battery Monitoring System (BMS) applications in Electric Vehicle (EV) industry following the standard industrial communication protocol. The hardware testbed performs both the battery voltage/current data acquisition and the Co-Estimation algorithm. Co-Estimation is an electric circuit model based SOC estimation algorithm which takes model parameter variations into account. In this paper, the Co-Estimation algorithm is firstly discussed. A battery hardware testbed design is then elaborated, and reasons for selecting main components, including microcontroller and voltage/current sensors are explained. The performance of the hardware testbed is compared with MATLAB simulation result using the same Co-Estimation algorithm, showing similar performance between two different platforms: hardware testbed and software simulation.
锂离子电池被认为是下一代交通系统的主要能源。提出了一种基于标准工业通信协议的电动汽车电池监测系统(BMS)硬件测试平台的系统设计方法。硬件测试平台完成了电池电压/电流数据采集和协估计算法。协估计是一种考虑了模型参数变化的基于电路模型的SOC估计算法。本文首先讨论了协估计算法。然后阐述了电池硬件试验台的设计,并说明了主要组件的选择原因,包括单片机和电压/电流传感器。使用相同的协估计算法,将硬件试验台的性能与MATLAB仿真结果进行比较,在硬件试验台和软件仿真两个不同的平台上表现出相似的性能。
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引用次数: 8
Research and optimization design of transmitting and receiving system in wireless power transfer via coupled magnetic resonances 耦合磁共振无线电力传输发射与接收系统的研究与优化设计
Shaojie Feng, Yang Li, Ke Huo, Yumei Li
This paper presents a research and optimization design of transmitting and receiving system in wireless power transfer via coupled magnetic resonances. The system connects the coil to the metal obstruction, which helps to eliminate the negative impact of metal obstacles on the wireless power transmission system and improve system transmission efficiency and direction compatibility. The influence of the coil connected with the metal obstacle on the resonance frequency of the system is studied and the optimized design has improved the transmission efficiency and direction compatibility compared with the metal-free systems is proved by establishing a universal wireless power transmission experimental device.
本文研究了一种耦合磁共振无线电力传输发射与接收系统的优化设计。该系统将线圈连接到金属障碍物上,有助于消除金属障碍物对无线电力传输系统的负面影响,提高系统传输效率和方向兼容性。通过建立通用无线电力传输实验装置,研究了与金属障碍物连接的线圈对系统谐振频率的影响,与无金属系统相比,优化设计提高了传输效率和方向兼容性。
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引用次数: 0
Robust position control of DC motor using a low-order disturbance observer against biased harmonic disturbances 基于低阶扰动观测器的直流电机鲁棒位置控制
I. Kim, Y. Son, Sang-Hee Kang, Seungchul Lim
Differences between nominal and real plants often arise from parametric uncertainties and external disturbances in practical control systems. Disturbance observer-based controllers have been widely used in various control applications to compensate plant uncertainties and reject disturbances. This paper addresses a model-based low-order disturbance observer design that can estimate a biased harmonic disturbance. By using the disturbance model, the proposed method successfully estimates the disturbance with unknown amplitude and phase but known frequency. A sufficient condition is presented for the stability of the proposed low-order observer based on output measurement information only. Based on the proposed observer, the position control problem of a dc motor is solved in the presence of parametric uncertainties and the harmonic disturbance. The conventional integral state feedback controller is combined with the proposed observer. The proposed observer estimates unmeasurable system states as well as the disturbance. Comparative computer simulations for a numerical example and a dc motor system are performed to test the performance of the proposed method. The simulation results show the enhanced performance of the proposed disturbance observer-based scheme.
在实际控制系统中,标称对象和实际对象之间的差异往往是由参数不确定性和外部干扰引起的。基于扰动观测器的控制器已广泛应用于各种控制应用中,以补偿对象的不确定性和抑制扰动。本文提出了一种基于模型的低阶干扰观测器设计,该观测器可以估计有偏谐波干扰。该方法利用扰动模型,成功地估计了未知振幅和相位但已知频率的扰动。给出了仅基于输出测量信息的低阶观测器稳定性的充分条件。基于该观测器,解决了存在参数不确定性和谐波干扰的直流电机位置控制问题。将传统的积分状态反馈控制器与该观测器相结合。所提出的观测器既可以估计不可测系统状态,也可以估计干扰。通过数值算例和直流电机系统的对比计算机仿真,验证了所提方法的性能。仿真结果表明,基于扰动观测器的方案具有较好的性能。
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引用次数: 3
A hybrid energy storage system for transient load and its multiple operation in DC microgrid 直流微电网暂态负荷及其多重运行混合储能系统
Duy-Hung Dam, Duc-Khanh Hoang, T. Chun, Hong‐Hee Lee
This paper presents a new configuration of hybrid energy storage system (HESS) to split the power between battery and super-capacitor (SC), and cooperative operation of multiple HESS in DC microgrid. The power sharing between the battery and the SC is achieved by means of the combination of internal battery resistance and output LCL filter, which consists of SC and two inductors. The battery current is compensated so that it smoothly changes regardless of any disturbance. The effect of the LCL parameters is investigated and evaluated by simulation with PSIM software. The simulation results prove that the proposed HESS configuration achieves high stability performance, lower cost and easy application to DC microgrid.
本文提出了一种新的混合储能系统(HESS)配置,实现了电池与超级电容器(SC)的电力分流,以及多个超级电容器在直流微电网中的协同运行。电池和SC之间的功率共享是通过电池内部电阻和输出LCL滤波器的组合来实现的,LCL滤波器由SC和两个电感组成。电池电流经过补偿,使其在任何干扰下都能平稳地变化。利用PSIM仿真软件对LCL参数的影响进行了研究和评价。仿真结果表明,所提出的HESS结构具有稳定性能高、成本低、易于应用于直流微电网的特点。
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引用次数: 1
期刊
2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)
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