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This paper proposes a novel hardware real time simulator of SynRM (Synchronous Reluctance Motor) using FPGA (Field Programmable Gate Array). The proposed method simulates a motor speed control system within 1 μs including a three phase PWM inverter. For realization of the hardware real time simulator, a motor mathematical model based on the dq rotate coordinate is solved. In addition, three phase...
This paper proposes a new method of modelling of inductance spatial harmonic components for a position sen-sorless control. The conventional methods for the sensorless control based on mathematical model consider only fundamental components of the inductances. This cause several problems including limited controller's bandwidth. The proposed method is based on the fact that the estimated back electromotive...
This paper proposes one novel sliding mode controller for the Half-bridge converter to reduce the line and load disturbance. Based on the bilinear model of the Half-bridge DC/DC converter, the small signal model and the design consideration of the sliding mode controller for this converter are deduced and presented. The controller is simply implemented in the analog controller board. The validation...
This paper presents a new simplification of Space Vector Pulse Width Modulation (SV-PWM) for two-level three-phase inverters. The look-up tables with formulas about switching times and states were replaced by simple arithmetic and boolean equations. The explicit identification of the sector where the reference space vector is located was also eliminated. This paper proposes the rotation of reference...
Recently electric vehicles are taken up as successor to conventional gasoline engine vehicles and many researchers have focused on motion control of electric vehicle. This paper describes a strategy to assist the vehicle driver using an accelerator pedal and a steering wheel is considered. In particular, the accelerator pedal is called haptic pedal and the combination control of steer-by-wire and...
Interior permanent magnet synchronous motors (IPMSMs) are employed for drive motors of electric and hybrid vehicles. Therefore, the control method in overmodulation range of inverter is important for fast torque response and expanding operation range of IPMSM. In this paper, the control methods based on perfect tracking control and PWM hold model are proposed in overmodulation range. The proposed...
Methods to detect DC bus current in order to reconstruct three-phase currents have a well-known problem of short DC pulse duration. To expand the pulse duration, several pulse width modulation (PWM) modification techniques have been proposed. The "Half Pulse Shift (HPS) method is very promising because it has both robustness against detection errors that occur due to current ripple and low acoustic...
So far, the authors' group have developed a pitching control method for electric vehicle (EV) based on the quick torque response of motors in order to improve the driving comfort. In this paper, a novel estimation method of braking torque is proposed to generate ideal vehicle acceleration for pitching control. The acceleration reference can be obtained from the estimated braking torque, motor torque,...
In this paper, according to power sharing algorithm and types (2 Con & 2 Inv, 2 Con & 1 Inv, 1 Con & 1 Inv) of photovoltaic (PV) and fuel cell (FC) hybrid generation system, control algorithms of converter and inverter are presented. Almost algorithms of PV and FC hybrid generation system are performed and verified to use by technology for commercialization. Moreover, a comparative study...
This paper proposes a discretization method suitable for real-time simulators using Forward Euler method. Realtime simulation using Forward Euler method have the following problems. One is simulation error caused by time step limitation, and another is delay in simulated waveforms. The authors have proposed a simulation method suitable for real-time simulators, but there is a problem that physical...
This paper proposes a combined steady state (SS) and dynamic model of a proton exchange membrane fuel cell (PEMFC) for use in distributed generation (DG) systems simulation. The SS fuel cell parameters associated with ohmic loss, activation overpotential and concentration over potential which are not easily accessible are estimated using a non-linear fitting of measured V-I fuel cell characteristics...
PM motor drive systems are widely used for industrial drives. However, PM motors basically produce the torque ripple due to the fluctuation of the magnetic field distribution. Dead time of the inverter, offset of sensors and current measurement errors lead to the torque ripple, too. The torque ripple leads vibration noises. In this paper, we proposed a torque ripple suppression method based on perfect...
A new magnetic-flux saturation model has been developed for permanent magnet synchronous motors. In the new model, simple first-order functions Φd(id, iq) and Φq(id, iq) express the relationships between d-q axis currents and each axis magnetic flux, considering magnetic saturation and cross-coupling effects. Taking advantage of these new features, we developed a current controller that introduced...
This document introduces a design methodology for a resonant boost converter topology that is suitable for operation at very high frequencies. The topology we examine features a low parts count and fast transient response but suffers from higher device stresses compared to other topologies that use a larger number of passive components. A numerical design procedure is developed for this topology that...
This paper deals with simulation and experimental verification of DC/DC converter with input active filter. Input filter design is presented and in analysis two different stabilization methods are studied. Offset method is based on stabilization of undesired current values on input choke and it is based on total change of converter switching (unplugging from the power network). Stabilization method...
A new control method based on State-Dependent Ricatti Equation (SDRE) control for single phase PWM inverter with FPGA based hardware controller is proposed. In the deadbeat control approach, robustness for the variation of the system parameter is the key issue. Some approaches were proposed, for example, a single-rate deadbeat control with disturbance observer, a multi-rate deadbeat control, and so...
A new generation of DC to AC inverters which is called Multilevel Inverter, has many industrial applications, especially in high-voltage and high-power. In spite of nearly sinusoidal waveform, multilevel inverters produce noticeable harmonic content. THD is normally used as a benchmark to evaluate harmonic contents. THD is one of important factors to produce losses in devices such as induction motors,...
An alternative approach to develop a large signal time dependent model of a simple electrochemical capacitor is proposed. A simple planar electrochemical cell consisting of two metal electrodes separated by a sulfuric acid electrolyte layer is modeled from first principles. The model is a large signal time dependent model and is valid under constant temperature conditions. The model is based on the...
The objective of the discrete-time modeling tools is twofold. First, they give an insight into the basic ideas of discrete-time modeling of dc-dc converters for university students and interested power electronics specialists. Second, as it is being presented below, the interactive calculation tools facilitate the fast and simple model development in WEB browser after entering the basic circuit and...
The DC-DC converter using coupled inductors is known as one of the topologies that achieve higher power density. This paper focused on this topology especially using extreme close-coupled inductors (ECCI). Following the elucidation of design guidelines for the coupled inductor theoretically, the superiority of the interleaved converter using ECCI in terms of reducing the size and losses in the magnetic...
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