Advanced Materials Research Vols. 860-863

Abstract: Aspen Plus software is adopted to simulate the CO2 recovery & liquefaction flowsheet in the beer fermentation process. According to the simulation results, the parameters of scrubber, CO2 compressor and CO2 condenser are analyzed. The sensitivity analysis is also made for the scrubber water consumption, CO2 compressor pressure and flash temperature of CO2 condenser.

Abstract: According to the different specifications of capacitor frame structure similar, designed by different designers, it will cause unnecessary duplication of labor, long design cycle, high cost, and the probability of error is relatively large, probably the same problem recurring. It causes not only the waste of manpower and resources, but also the existence of manufactured parts cannot be assembling a series of follow-up questions, it needs to be modified to normal use, causing great resistance to the research and development of new products. So that the competitiveness of enterprises in the same industries was at a disadvantage, based on the secondary development of Pro/E to solve the above problem.

Abstract: Compressed natural gas (CNG) is regarded as one of the most promising alternative fuels, is widely used for the automobile engines. In order to improve the thermal efficiency of CNG engine, the direct-injection (DI) technology has been adopted. The stratified CNG mixture can be ignited by the spark plug which is installed near the injector nozzle, so the lean combustion can be subsequently achieved. For the direct-injection spark-ignition (DISI) engine, the reliable ignition is a foundational problem for the reliable operation, so it is very important to study on the spray characteristics of DISI engine. In our study, a combustion chamber is designed and a visualization system is built. The DI CNG spray's injection process was digital recorded with the schlieren optical system under different experiment conditions. The spray characteristics of the DI CNG engine were analyzed with the experimental results.

Abstract: With the shortage of fossil energy and the worrying about environmental problems, renewable energy and electric-vehicle get rapid development. Against this background, an overview of power characteristic of electric vehicles is presented. Monte Carlo method is used to simulate the charging and discharging behavior of electric-vehicles, and the load curve of EVs of different scale is presented. It analyses the charging load characteristic in the uncoordinated charging mode and the discharging capacity curve in the vehicle-to-grid (V2G) mode in this paper. Under the software package of Visual C++ 6.0, it verifies the availability and feasibility through comparison and analysis, which lays a foundation for the large-scale development of electric vehicles.

Abstract: To realize the online error analysis and verification of control strategy, it is necessary to simulate the states of the motion mechanism, and accurately to obtain the motion relationship between multi-axis and between motors. So a test and simulation system of multi-axis controller was designed. The system consists of a unit of real-time acquisition and analysis, a simulation unit of motor loads, a motherboard and a computer. Motor driving signals for multi channels are synchronously sampled and analyzed by the unit of acquisition and analysis. Motherboard is used to link the various parts. The working states of motor divers under loads are simulated by simulating the motor loads. In the industrial computer, the control effects of multi-axis control system are displayed by 3D simulation. Test results show that the system is stable and reliable, and has a certain application value.

Abstract: In order to improve the performance of a new type of full hybrid electric bus, this paper puts forward a set of coordinated control method to adjust the operation of the engine and two motors. In the engine start-stop logic control, comprehensive consideration of SOC, the speed of the bus and the accelerator pedal stroke are performed, while hysteresis control is introduced to improve the stability of the control; In the engine working point adjusting control, not only the engine speed command rate of change was optimized, but also the output torque rate was optimized to match the air injection and exhaust, etc. Further, the method based on dynamic constraints was used to optimize the working point adjustment process. At present, there are hundreds of busses operates in route. Results verify the feasibility and effectiveness of the control method. The vehicle has good fuel economy, and the dynamic performance and driving comfort are also greatly improved.

Abstract: Research on energy storage technology and intelligent control strategies, is the main research trend of "green" strategic of electric traction technology under the new energy policy in the new century. It could help to achieve improvement on performance and quality of rail transport. Based on the dynamic performance design requirements of the target vehicle, this paper puts forward a set of hybrid power system which adapts to match schemes and energy control strategy in areas without electricity of power batteries and super capacitors in different working conditions. The test results of dynamic performance and energy control strategy show that the hybrid system satisfies the requirements of security and dynamic performance of the target vehicle, and also ensures higher energy use efficiency.

Abstract: With the development of vehicles-to-grid (V2G) technology, electric vehicles (EVs) are receiving increasing attention in recent years. This paper describes a smart home energy dispatch model including EVs and flexible appliances. In this model, the home's electricity cost is minimized through optimal dispatch, while the comfort level of home is considered. A simplified method to measure battery degradation is proposed. The model is solved by the dissipative particle swarm optimization (DPSO) algorithm. Simulation results show that the battery lifetime can be extended when the battery degradation is considered in the charging and discharging of the EV. With the decrease in the battery cost, the user has more incentives to use the EV as a storage device to reduce the electricity cost.

Abstract: A simple mathematical model of the range of EV is established in this paper and it is used to analyze the main related factors. A kind of electric vehicle model is also constructed and analyzed in simulation software ADVISOR. From the results of analysis, the regulation of influence of some affecting factors on the driving range of EV can be obtained. All these regulations are helpful for us to promote our designing of EV.

Abstract: This paper predicts the future of rapid charging technology for EV, including its corresponding vehicle types and charging time. We choose the Monte Carlo simulation method to choose the initial charging time, initial SOC for each EV randomly, so as to get the fast charging EV load. After all these, we could have a comprehensive reliability evaluation of the generation and transmission power system includes fast charging EV load. In the end, through a matlab test example, a reliability evaluation on the impact of fast charging EV load on power generation and transmission system is made.