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This paper presents the phase-variable modeling of a SynRM motor in PSIM simulation tool. Just like a real motor, the three-phase input is modeled by means of resistor, inductor, and dependent voltage source circuit elements. The dependent voltage source is used to replace the variable inductance of the stator equivalent circuit by using the voltage source absorption theorem. There are two features...
This paper presents the construction of the phasevariable model of a three-phase ac induction motor in PSIM simulation tool. The modeling can be divided into an electromagnetic part, an electromechanical part, and a mechanical part. There are two features of the constructed model block. One feature is that the three-phase inputs are circuit-based, so it can be directly connected to the inverter for...
This paper presents the vector control design of an axial-flux permanent magnet motor (AFPM) driven by a current source inverter (CSI), which is considered as having many advantages over the voltage source inverter. The control system consists of a 2-DOF speed controller, a multi-loop current controller, and an SVPWM modulation block, which can offer a faster dynamic response, an instantaneous adjustment...
Class E resonant inverter is often applied to design a high frequency AC power source. Based on the zero voltage switching (ZVS) operation, the class E converter has high converting efficiency even the converter works at high frequency. In general, the output power needs to be controlled for practical application. The power output of class E inverter can be adjusted by regulating the duty ratio of...
This paper presents the modeling of an AFPM motor with cogging torque ripple. The model block has been constructed and verified in PSIM. This is a combination of circuit component based and equation based model which facilitates the coupling of the model inputs to the PWM inverter and the load torque input for integrated performance evaluation of the motor drives. The model has also been verified...
This paper presents the design of a power management simulator of an electric vehicle with auxiliary fuel cell and wind energy sources. The power system of the electric vehicle consists of a 1-kW hydrogen fuel cell and a 2-kW LiFePO4 battery. The supply of the system power is managed by a power management unit. Normally, the LiFePO4 battery is the main power of the electric vehicle with light load...
The aim of this paper is to propose a new integrated permanent magnet synchronous motor (PMSM) drive to improve performance for the whole speed range. Conventionally, in the field-weakening PMSM (or interior PMSM) drive, there are three common drawbacks, which are high copper loss, poor current transient performance, and greatly sensitive to the variation of dc-link voltage. The proposed control strategy...
This paper presents a novel maximum-power-point-tracking (MPPT) algorithm in wind-turbine generation systems using neural network compensator based on the slope of the wind-turbine mechanical power versus rotation speed to avoid the oscillation problem and effect of uncertain parameters. Because the characteristics of the wind-turbine rotation speed is determined by the wind speed and air density...
In this study, a model reference adaptive digital control scheme is proposed for the buck-boost converter. The control design of the buck-boost converter is a challenging work because the buck-boost converter, which is a non-minimum phase (NMP) system, has a right half-plane zero. This controller design is based on the small signal model of the buck-boost converter and a reference model. A cost function...
In this paper, an adaptive digital control scheme is proposed for the buck-boost converter using a desired pole/zero assignment approach. In the case that the plant parameters are well-known, through the sensitivity function a digital controller for the buck-boost converter with desired pole/zero assignment is proposed by solving some simple algebraic equations instead of solving a Diophantine equation...
This paper presents the modeling and estimation of state of charge (SoC) for Li-ion batteries using ANFIS architecture. The system consists of two phases of operation. The phase 1 is the SoC modeling process. The phase 2 is the real-time estimation process. Firstly, on the phase-1 operation, a brand-new Li-ion battery is used for a completely discharge cycle which consists of 355 cycles of discharge/charge...
In this study, based on the slope of power versus voltage, a novel MPPT algorithm using neural network compensator is proposed to avoid the oscillation problem and effect of uncertain parameters in photovoltaic (PV) systems. However, the characteristics of PV output voltage and output current are determined by the solar irradiation conditions, ambient temperature, and the load electrical characteristics,...
An H∞ fuzzy trajectory estimation is proposed for robust tracking guidance and early warning in antitactical ballistic missile systems with model uncertainties and external disturbances. In order to avoid solving the nonlinear Hamilton-Jacobi-Isaac(H-J-I) partial differential equation for H∞ trajectory estimation of the nonlinear reentry vehicle (RV) dynamic equation, the Takagi and Sugeno fuzzy linear...
This paper presents a novel isolated buck converter with output voltage ripple reduction by a complementary square-wave scheme. The converter is composed of a forward DC-DC converter, a half-bridge inverter, and a common LC filter. The outputs of forward converter and halfbridge inverter are connected in series, so that their square-wave outputs are added to form one constant DC voltage. The LC filter...
This paper presents the model construction of a brushless DC motor via MATLAB/SIMULINK and FPGA control, so that one can evaluate the performance of the BLDC motor control with various control schemes using MATLAB/SIMULINK. The constructed model consists of a BLDC motor dynamics block, a Hall-sensor signals generation block, a back-emf block, and a PWM-generation logic block. In order to evaluate...
This study introduces H∞ decentralized static output feedback fuzzy control design for nonlinear interconnected systems via T-S fuzzy models. In general, due to the interactions among subsystems, it is difficult to design an H∞ decentralized output feedback controller for nonlinear interconnected systems. A singular value decomposition (SVD) method is proposed in this study to solve the H∞ decentralized...
This study introduces L∞ -gain static output feedback fuzzy control design for nonlinear systems via T-S fuzzy models. Unlike the L2-gain (H∞) control case, the L∞-gain control problem is dealing with persistent bounded disturbances. The structure of static output feedback controller is much simpler than that of dynamic output feedback controller. A singular value decomposition (SVD) method is proposed...
This paper describes the robust static output feedback H∞ fuzzy control design for a class of nonlinear stochastic systems. The system dynamic is modelled by Itô-type stochastic differential equations. For general nonlinear stochastic systems, the H∞ control can be obtained by solving a second-order nonlinear Hamilton-Jacobi inequality. In general, it is difficult to solve the second-order nonlinear...
This paper presents a novel interleaved and isolated DC to DC buck converter with high voltage ratio. The converter consists of a half-bridge converter and a forward converter which are connected in parallel with a common load. As being one of interleaved DC to DC converters, it has smaller output current ripples within wide duty ratio, and it also has isolated input/output parts and higher voltage...
Generally, one should use one large input capacitor rated from thousands of micro farads to ten-thousands of micro farads when applying reflex method for battery charger. However, large capacitor is very expensive. This paper proposes a novel control strategy with separate charging time to reduce the loading of the input capacitor, so that one may use a smaller input capacitor, and then reduce the...
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