A number of studies have focused on Insulated Gate Bipolar Transistor (IGBT) junction temperature prediction methods. Some methods introduce extra circuits or sensors for an invasive prediction. However, the most current hardly consider situation that may be affected by IGBT degradation after long term operation. In this paper, neural network using DC link voltage, switching frequency, load and Negative Thermal Coefficient thermistor (NTC) as inputs is proposed online The training completed...

In this paper, we study the effect of moving bottlenecks on traffic flow. The full velocity difference (FVD) model is extended to flow a two-lane highway, and new lane changing rule proposed reproduce vehicular behavior. Using model, derive fundamental current—density diagrams for with bottleneck. Moreover, typical time—space diagram highway shows formation dissipation Results demonstrate that bottleneck enlarges increase density, but can be reduced by increasing maximum heavy truck. effects...

For grid connected hydropower plants with surge tanks, the time response of frequency hydro-turbine governing system under coupled action tank and power load disturbance have been examined. On basis a mathematical model operating in an isolated tank, to has developed. Using Laplace transformation, comprehensive transfer function, taking as input signal speed output signal, developed for model. Finally, by using MATLAB-Simulink numerically simulate at different scales sectional areas,...

The load capacity of the permanent magnet synchronous motor is limited by rotor temperature, and excessive temperature will bring potential thermal safety problems system. Therefore, accurate prediction for electric vehicle crucial to improve performance system operation safety. This paper studied heating mechanism energy flow path built heat conversion model stator rotor. real-time algorithm predict was constructed based on dissipative conservation temperature. And method initial fitted...

A three-lane traffic flow model is proposed to investigate the effect of car accidents on flow. The an extension full velocity difference (FVD) by taking into account lane changing. extended lane-changing rules are presented behaviour. cases that occupy exterior or interior lane, medium and two lanes studied numerical simulations. time-space diagrams current presented, jams investigated. results show accident has a different when it occupies lanes. have more serious whole road they larger...

Load rejection test is one of the essential tests that carried out before hydroelectric generating set put into operation formally. The aims at inspecting rationality design water diversion and power generation system hydropower station, reliability equipment dynamic characteristics hydroturbine governing system. Proceeding from different accident conditions set, this paper presents transient processes load corresponding to conditions, elaborates types rejection. Then numerical simulation...

The actual power capacity of permanent magnet synchronous machine for electric vehicles is usually limited by rotor temperature, and overheating one the major reasons failure. Therefore, an approach temperature estimation proposed to improve motor peak utilization protect from serious demagnetization due thermal damage. A real-time iterative algorithm provided based on equivalent model temperature. First, heat generating principle each part as well flow transferring system analyzed. Second,...

An extended two-lane lattice model of traffic flow with consideration the slope effect is proposed. The reflected in both maximal velocity and relative current. stability condition derived by applying linear method. By using nonlinear analysis method, we obtain Korteweg–de Vries (KdV) equation near neutral line modified (mKdV) critical point. analytical numerical results demonstrate that enhanced on uphill but weakened downhill when angle increases.

Motor as well its controller plays an important role in driving electric vehicle. As sole power device, it is closely related with actual torque accuracy to make sure security during EV driving. Due complex controlling system for motor, there are some random failures of hardware and software which can bring a series unexpected risks acceleration or deceleration. A novel method based on motor parameters feature proposed estimate extraction three-phase volts currents. Additionally, Quality...

Costate value plays a significant role in the application of PMP-based control strategy for PHEV. It is critical terminal SOC battery at destination and corresponding equivalent fuel consumption. However, it not convenient to choose approximate costate real driving condition. In paper, optimal problem PHEV based on PMP has been converted nonlinear programming problem. By means KKT condition can be approximated as multipliers NLP divided by LGL weights. A kind general estimation approach...

In order to obtain junction temperature of insulated-gate bipolar transistor (IGBT) on electric vehicle, a number studies have proposed (Tj) estimation methods. However, some these methods require additional circuits which lead cost increase, simulate the IGBT thermal process with model, induces deviation between real functional results and simulation, other algorithm based may involve upgrading main control unit (MCU) increased costs. This paper proposes method Tj regression analysis. The...

A new extended lattice model of traffic flow is presented by taking into account both multianticipative behavior and the reaction-time delay drivers. The linear stability theory nonlinear analysis method are applied to model. condition obtained. Korteweg–de Vries (KdV) equation near neutral line modified (mKdV) critical point derived. numerical results show that will be enhanced consideration weakened with increase delay. unfavorable effect induced driver reaction delays can partly...

Permanent magnet synchronous motors are widely used and have sufficient development prospects in the drive systems of electric vehicles. Traditional model predictive control (MPC) methods shown to achieve good performance by tracking d- q-axis current as well limiting amplitude. However, dynamic response harmonics during switching process not considered traditional MPC. Therefore, this paper proposes an MPC that can effectively improve performance, where switch transfer sequence constraint...

In this paper, an ISG hybrid electrical vehicle (HEV) was modeled by LabVIEW of National Instruments (NI). order to test its fuel economic performance in human-in-the-loop environment, a small researching driving simulator built. The simulation platform and data acquisition system were built NI PXI hardware related software. Unity 3D game engine selected construct virtual scene. Game inputs device used as manipulate hardware. whole realizes man-machine interactive simulation, provides safe...