Horia Hedesiu

Electrical Machines Virtual Laboratory: Grid Connection of a Synchronous Generator

Virtual laboratories can become important components of the teaching process, because using them several experiment-oriented problems can be solved easily and also from the distance. Graduates using virtual laboratories will be better trained when they enter the job market. In the paper a laboratory work will be presented having two components: a simulation and an experimental module. Both can be used for the preparation of a real lab and for accessing the real-world experiments. The virtual lab modules can also allow multiple students to remote access the experiments, the multicast data transfer mechanisms and arbitration mechanisms

High-frequency model and conductive interferences of a small doubly salient permanent magnet machine

In this paper a HF model, based on lumped parameters, of the DSPM motor is developed and a simulation of the conducted EMI in electrical drive with PWM inverter fed and bidirectional current control DSPM motor is performed.

FPGA based processor in the loop analysis of variable reluctance machine with speed control

This paper details on an advanced analysis of a Variable Reluctance Machine, designed to be used for light electric vehicle propulsion. The goal is to setup a Field Programmable Gate Array (FPGA) based Processor-in-the-Loop simulation test bench for the proposed machine, in such way, that emulates the real machine and control unit as close as possible. Hence, two FPGAs are used, one running the Field Oriented Control unit, the other one running the machine model. The communication between these devices is performed via the digital and analog I/Os. Hardware tools from National Instruments are used and the FPGAs are programmed using LabVIEW FPGA graphical programming environment. The chosen control strategy for the machine is the Maximum Torque per Ampere Control, in addition to the classical Field Oriented speed Control.

Rapid control prototyping of a speed control strategy for a switched reluctance machine

This paper presents a rapid control prototyping technique for a speed controlled Switched Reluctance Machine. The control is developed in LabVIEW FPGA and runs on an R-series board by National Instruments equipped with a Kintex-7 FPGA chip. The control is designed and simulated in real-time using look-up tables, with data provided by finite element method simulations and mathematical equations describing the electric machine model with fidelity. The results of the control simulation are validated on a physical test bench proving the benefits of the proposed technique in the field of real-time simulations.

Real-time FPGA model in the loop analysis of Permanent Magnet Synchronous Machine for LEV

The paper details an advanced analysis of a Permanent Magnet Synchronous Machine, as traction motor for light electric vehicles. The focus of the paper is to create a real-time model in the loop (RTMiL) simulator based on Field Programmable Gate Array (FPGA). By this, the gap between the simulated models and the behavior of the real machine and its converter is diminished. The machine with its electronic converter will be modelled on one FPGA and the control unit, with Field Oriented Control, on a second one. The communication between these devices is performed via the digital and analog I/Os. Hardware tools from National Instruments are used and the FPGAs are programmed using LabVIEW FPGA graphical programming environment. The results of the RTMiL analysis will be compared to those obtained by finite element models, benchmarking the strength of such real time simulators.

Real-time FPGA simulator for electric vehicle power supply systems

The combination of Battery-Ultracapacitor, as a Hybrid Energy Storage System (HESS) controlled with a bidirectional buck-boost converter for light electric vehicles is presented in this paper. By combining these two energy storage elements an efficient supply system can be obtained. A bidirectional Buck-Boost converter is used to control the energy transfer between the elements of the HESS and the load. From a predefined New European Driving Cycle (NEDC) the power needed from the energy storage of the electric vehicle is obtained. This needed power is used to simulate the load. The focus of this paper is to create a real-time model in the loop (RTMiL) simulator based on Field Programmable Gate Array (FPGA). Hardware tools from National Instruments are engaged and the FPGAs are programmed using Lab VIEW FPGA graphical programming environment.

Complete FPGA based real-time motor drive simulator with bidirectional battery and ultracapacitor power supply

The paper describes step by step the process of constructing and testing real-time tool for analysis of a bidirectional Buck-Boost converter supplying a Permanent Magnet Synchronous Machine (PMSM), as a traction motor for light electric vehicles. This converter was developed to be used as a controlled energy transfer equipment between the main energy source of a battery and an auxiliary ultracapacitor. The focus of this paper is to create a real-time model in the loop (RTMiL) simulator based on Field Programmable Gate Array (FPGA). By this, the gap between the simulated models and the behavior of the real machine and its converter is diminished. The machine and the control unit with Field Oriented Control will be modeled on two FPGAs while for the Buck-Boost Converter, the battery and the ultracapacitor (UC) models will use a third FPGA. The communication between these devices is performed via the digital and analog I/Os. Hardware tools from National Instruments are used and the FPGAs are programmed using LAB VIEW FPGA graphical programming environment.

FPGA based real-time simulation of a Switched Reluctance machine drive unit

This paper presents an overview and the results of a Field Programmable Gate Array (FPGA) based real-time simulation of a Switched Reluctance Motor (SRM) drive system, designed for light EV applications. The analysis is ran on a Kintex-7 FPGA using an R series board from National Instruments. The real time simulation model is designed in LabVIEW FPGA and uploaded on the R series board to perform accurate and high speed simulations of the machine. The advanced SRM hybrid model includes look-up tables and mathematical equations, describing the real model with high fidelity. The results of the analysis are validated by results based on offline simulation which proves the benefits of such real-time simulations and also validates the performances of the machine.

Reconfigurable test platform for modular embedded systems in manufacturing processes

This paper presents a platform developed for in production testing of modular embedded systems. These systems are flexible and low cost, with respect to production and maintenance. However, they require a complex testing process, in order to reduce the flaws in the production process and increase the rate of certified modules. For the manufacturers, modular embedded systems offer the possibility of reusing parts of a project in other projects, thus reducing the overall cost. Being reconfigurable, these systems enable the manufacturers to sell devices that fit the requirements of more users.