The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The paper presents the method of digital modelling of process of switching on by vacuum switch in capacitive circuits. Currently, there are few descriptions of vacuum switch models used for capacitive circuits switching on. More often researchers focus on vacuum switch models used for switching of the circuits (also previous works of the Authors) and even more often models used for switching of the...
PV modules output performances are affected by change in irradiance, temperature level and partial shading condition. Therefore, it is necessary to improve output power of PV module to achieve maximum power. This paper presents MATLAB based Simulink model in which flyback converter is used as MPPT converter. The advantage of having this scheme is that switching losses are less as flyback converter...
In this paper, the new structure of non-isolated boost dc-dc converter is considered as achieving maximum power transferring to load from a photovoltaic (PV) power network. To achieving maximum power point (MPPT) of operating mode, the Perturb-and-Observe (P&O) is applied after modeling of other part of this power network such as battery, bidirectional dc-dc converter and proposing new control...
This paper analysis and compares the different driving techniques for the brushless DC motors (BLDC). First, the conventional block commutation technique used to drive the BLDC is discussed with respect to the produced torque ripple. Second, the modified techniques like the overlap and phase advance techniques discussed as well. Finally, a combined driving technique including the phase advance and...
A low power switching method for SAR ADC is proposed in this paper. With this switching method the comparator first compares the sampled input voltage with Vref/2 to generate the MSB and determine whether to use Vref/2 or Vref as the comparator reference voltage in the following conversation steps, and the DAC with a split capacitor array uses Vref/2 as the reference voltage to generate the remaining...
This work investigated nine popular integration algorithms and simulated the DC-DC boost converters, with and without parasitic elements, operating in continuous conduction mode (CCM). The off-line simulations were performed under the Matlab environment. The methodology consisted of firstly, deriving the state-space model of the converter and then deriving its small-signal average model. The average...
Developing sensors or sensor systems requires precise knowledge of their technical properties. On the one hand the three-dimensional sensitivity of a sensor is of interest. On the other hand the transmission characteristics of transceiver systems, that transfer information or energy, depending on the distance between transmitter and receiver are of particular interest. Measurements can be useful if...
The proposed paper deals with the problem of modelling and simulation of a dual-redundancy Electro-Hydrostatic Actuator (DREHA) by the way of co-simulation based on AMESim and MATLAB. With the development of More Electric Aircraft (MEA) technology, integrated Power-by-Wire (PBW) actuator will be used in the airborne actuation system. As an important PBW actuation system, EHA has virtues of high efficiency,...
A hierarchical decentralized network reconfiguration approach to minimize power losses for smart distribution systems was presented in Part I. In this paper, the proposed approach is applied to four test distribution systems to examine its performance. A demonstration system consisting of the test system and distributed intelligent agents is built using MATLAB/Simulink to illustrate how the decentralized...
The design of PWM sliding mode control for a novel frequency conversion circuit which called boost matrix converter is presented. The general situation of sliding mode control strategy and frequency converters are firstly introduced. The specific analysis of boost matrix converter and the derivation process of PWM sliding mode controller are clarified afterwards. Finally the system simulation result...
This paper presents the design of a 3 phase Cyclo-converter which can be used for high frequency application. The load must be the RLC load for obtaining a constant voltage at 30 KHz which is resonant frequency. It can be operated at unity power factor. The cyclo - converter can also be made functional to convert the low frequency alternating current to High frequency alternating current. Here we...
Now a day's Brushless DC motor (BLDC) and DC motors are being used in most of the Electrical Vehicle. Switched Reluctance Motor (SRM) may become best alternative to BLDS and DC motor in this area because of its constant power output capability, good thermal management and fault tolerance capability. Furthermore SRM having advantages of low weight, high efficiency, small size, low cost and high torque...
In recent years the simulation tools have been optimized for precise modelling and simulation for their special purpose. Therefore the simulation tools have been developed to model and simulate a certain problem. In the past, the hardware was used to be modeled in a SPICE simulator, the software in a signal and differential equation based simulator. Nowadays the investigated systems are decreasingly...
Control system of micro-plasma arc welding machine, including timing control system and parameters control system, has been studied deeply. Based on the study on timing control system and parameters control system, their models were established by automatic control theory, and systems' model simulation was implemented and analyzed by means of Simulink/Matlab. It was showed that the model of timing...
Classic SPWM control mainly focused on making the output voltage of inverter transformer as close as possible to the sine wave, did not take into account the output current waveform. The voltage space vector PWM (SVPWM) control, considering the inverter and AC motor as an integral whole, control the inverter in accordance with the circular track of the rotating magnetic field, can work better. In...
Based on ANSOFT software, the 2d and 3d finite element models of switch reluctance motor were established, the dynamic simulations on the switch reluctance motor finite element models were researched by different control strategies. The accuracy and precision of the finite element models were verified by comparing the finite element results with MATLAB simulation results. The results show that the...
Aiming at the power device open and close faults occurred in the inverter, GUI based simulation platform for inverter drive system under fault condition is studied primarily in this dissertation. Using the S-function block of the MATLAB, the S function of the motor is written. The SIMULINK blocks of the inverter under different power device faults condition are built by the basic blocks of MATLAB/SIMULINK...
The operation principle of peak current mode control H bridge converter was analyzed. It can observe nonlinear phenomena in H bridge converter after simulating to the model, which builds by the concept of binary logic variables using Matlab/Simulink. According to the characteristics of H bridge converter, a time-delayed feedback control method was applied to suppress the chaos behavior of H bridge...
Based upon the engine efficiency map and hydraulic pump/motor efficiency curve, a real-time control strategy is proposed for parallel hydraulic hybrid vehicles (PHHV) using the load leveling concept and logic threshold approach to control the torque distribution, various operation modes and the dynamical transitions between the modes for the hybrid power train. In the environment of the backward simulation...
Photovoltaic (PV) system is composed of several elements as solar cells, boost converter, inverter and load. Owing to the existence of converters, photovoltaic system is a hybrid system contains continuous dynamic and discrete dynamic. Traditionally, the power electronic converter is difficult to model. This paper illustrates the modeling method of hybrid system, especially finite automata model....
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.