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This paper presents a system simulation technique that combines the capabilities of two defacto standard tools. The SPICE tool that accounts for electronic device characteristics is seamlessly incorporated with SIMULINK, which is a more general purpose dynamic system simulation environment. The result is a simulation technique that has the general flexibility of SIMULINK while accounting for electronic...
This paper presents the analysis and design of the full-bridge (FB) LC parallel resonant plasma driver at the radio-frequency (RF) operation with variable-inductor based phase control scheme. Since the switching frequency of the RF plasma module is mainly fixed at 13.56MHz for EMC regulation, the variable-inductor control scheme can adjust the transconductance amplitude to enable load-current regulation...
A hybrid modeling technique in CCM (Continuous Conduction Mode) and equally valid in DCM (Discontinuous Conduction Mode) is proposed for the step-down Buck converter. An improved ν-resolution model is obtained which easily allows the deduction of the equivalent PWA (Piecewise Affine) model that is adequate for predictive control design. Simulation results of the open-loop model are presented, proving...
In this paper, the application of the Sliding Mode Theory, in terms of observer and control design, to the DC-DC Single-Ended Primary Inductor Converter (SEPIC) is investigated. The choice and influence of the sliding surface regarding the state vector is presented. Usual sliding surfaces chosen to control other high order DC-DC converters are found not to work on the SEPIC. Thus, other surfaces are...
Capacitive Power Transfer (CPT) technology has been proposed and investigated recently as an alternative contactless power transfer method which has the advantages of being able to transfer power across metal barriers and causing low power losses in metal surrounding circumstances. However, more fundamental researches are needed to guide CPT coupling analysis and design. Based on the Duality Principle,...
This paper studies stability and bifurcation of a simple piecewise linear dynamical system relating to several kinds of switching converters with solar cell input. Applying a simplification method, we derive the 1D phase map that is useful for precise analysis. The system can exhibit rich bifurcation phenomena, and for simplicity, we consider bifurcation for two parameters corresponding to temperature...
This paper illustrates how Kalman filters were used in a model-based fault diagnosis of a DC-DC boost converter. A time-averaging model was used with the Kalman filters to generate residual signals. Multiple signature faults were developed in fault scenarios to identify critical variations in the elements of a power converter using the adaptive estimation technique. Results show a very precise and...
The main theme of this paper is to present practical considerations for the design and implementation of digital-controlled power converters and thereby providing archival reference for the development of digital power converter. First, the effects of A/D converter, software-based compensator and digital pulse-width modulator on digital power converter are introduced. Second, the selection of modulation...
This paper presents an inverter topology based on series-voltage-action (SVA) used to generate additional levels. This inverter will be called as SVA Inverter. The SVA Inverter presents some advantages over the traditional inverters, such as output voltage higher than the dc-link voltage and lower distortion in output voltage. The complete analysis presented in this paper includes the inverter model...
In order to evaluate and improve the electromagnetic compatibility (EMC) of a variable frequency air conditioner, a time-domain methodology is advanced to analyze the conducted electromagnetic interference (EMI) caused by the three phase inverter-motor system in an actual air conditioner. The parasitic parameters of the EMI propagation path in the air conditioner are extracted using impedance measurement...
The reliability of the PMSM drives is the one of critical factors in several industries, in particularly, the areas where the precise operation and/or high performance are required. This paper proposes a novel diagnosis scheme using Extend Kalman Filter (EKF), especially, in subject to the open-phase faults of the inverter switches. The stator resistances of PMSM are estimated by the EKF in real time...
The Switched Reluctance Machine can be used as an AC generator. In this operation mode, a capacitor is connected in parallel with each phase forming an L-C tank. Due to L characteristics, the behavior of the machine is highly nonlinear and generally, analytical solutions for the system differential equations are not possible. The steady state behavior of the system is a limit cycle. To predict and...
Contactless battery charging platform is an emerging technology that brings safety, reliability and convenience to low-profile charging applications. In this paper, an improved three-layer circular coil array PCB winding is proposed, which can generate the near-uniform magnetic field over a specific operation area. Moreover, an optimal circuit design procedure is developed to maintain the approximately...
In this paper, a few known characterization techniques for supercapacitors have been evaluated with the purpose of being able to predict the roundtrip efficiency of an energy storage system under constant power application. It is found that the user cannot rely on a single characterization method since the methods based on small signal disturbance are not very precise when the model is subjected to...
High penetration of Plug-in Hybrid Electric Vehicles (PHEV) are expected in the near future. Battery state information is essential in protecting the PHEV battery from harmful charging/discharging, and in optimal battery management. With accurate battery relaxation effect model, the battery νoc (open circuit voltage) can be obtained from direct measurements on the battery's terminal voltage and load...
Supercapacitors are usually low voltage, high capacity devices with milliohm order equivalent series resistances. They usually have time constants from fractional seconds to seconds. Due to these long time constants, compared to the time durations of power line transients in the range of few microseconds to several 100 microseconds, these devices may be able to withstand short duration surges with...
Interior Permanent Magnet Synchronous Motor(IPMSM) is used for wide applications because of its large torque density and high efficiency. However, IPMSM has large space harmonics and strong magnetic nonlinearity. The establishment of the dynamic characteristic analysis technique is required to examine control techniques to high performance and high efficient drive of IPMSM. In the paper, a new matrix...
These High quality factor resonators are key components in RF-circuits. Fabrication of on-chip LC tank circuits is costly and suffers from low Q-factor. Design, simulation, and fabrication of a novel off-chip resonator with high quality factor are reported. Minimum feature size of standard PCB fabrication has been used to make imbedded solenoids in Duroid substrate with 2.2 relative permittivity....
So as to reduce size, volume, weight and increase efficiency of power supplies for electrical sequential loads, authors propose to analyze functioning and disfunctioning of two converter topologies: inverter + power sharing system; matrix converter. A system with two electrical machines is analyzed through simulations from the control point of view and the design point of view considering over-current...
A series parallel-loaded resonant inverter (SPLRI) providing complementary AC high-voltage sinusoidal waves for driving group multiple EEFLs (multi-EEFLs) is proposed. The balance of the AC wall discharge inversion process in multi-EEFLs is achieved with the likely AC drives so as to enhance luminous output. An experimental to design approach is conducted to find the dynamic parameters of the multi-EEFL...
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