An advantage for some wide bandgap materials, that is often overlooked, the thermal coefficient of expansion (CTE) better matched to ceramics in use packaging technology. It shown optimal choice uni-polar devices clearly GaN. further future bipolar C (diamond) owing large bandgap, high conductivity, and electron hole mobilities. A new expression relating critical electric field breakdown abrupt junctions material energy derived used derive expressions specific on-resistance power...

Power-electronics-based dc power distribution systems, consisting of several interconnected feedback-controlled switching converters, suffer from potential degradation stability and dynamic performance caused by negative incremental impedances due to the presence constant loads. For this reason, analysis these systems is a significant design consideration. This paper reviews all major criteria for that have been developed so far: Middlebrook Criterion, Gain Margin Phase Opposing Argument...

Wide bandgap power devices have emerged as an often superior alternative switch technology for many electronic applications. These theoretically excellent material properties enabling device operation at higher switching frequencies and temperatures compared with conventional silicon devices. However, defects can dominate behavior, particularly over time, this should be strongly considered when trying to model actual characteristics of currently available Compact models wide are necessary...

This paper deals with subsynchronous resonance (SSR) phenomena in a capacitive series-compensated DFIG-based wind farm. Using both modal analysis and time-domain simulation, it is shown that the DFIG farm potentially unstable due to SSR mode. In order damp SSR, rotor-side converter (RSC) grid-side (GSC) controllers of are utilized. The objective design simple proportional damping controller (SSRDC) by properly choosing an optimum input control signal (ICS) SSRDC block, so mode becomes stable...

In this paper, a new thermal model based on the Fourier series solution of heat conduction equation has been introduced in detail. 1-D and 2-D models have programmed MATLAB/Simulink. Compared with traditional finite-difference equivalent <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">RC</i> network, can provide high simulation speed accuracy, which proved to be more favorable dynamic characterization power semiconductor switches. The complete...

This paper presents application and control of the gate-controlled series capacitor (GCSC) for compensation subsynchronous resonance (SSR) damping in doubly-fed induction generator (DFIG)-based wind farms. The GCSC is a new FACTS device composed fixed parallel with pair antiparallel gate-commuted switches. study considers DFIG-based farm, which connected to series-compensated transmission line whose parameters are derived from IEEE first benchmark model computer simulation SSR. small-signal...

Compact models of wide-bandgap power devices are necessary to analyze and evaluate their impact on circuit system performance. Part I reviewed compact for silicon carbide (SiC) diodes MOSFETs. II completes the review SiC covers gallium nitride as well.

Grid impedance and the output of grid-connected inverter are important parameters for operation systems, such as solar, wind, other distributed-generation resource systems. The mismatch between grid interfacing circuit often generates harmonic resonances that lead to reduced power quality even instability. Since impedances usually vary over time a function many parameters, online measurements required stability assessment adaptive control inverters. Several methods have been proposed quick,...

Recently, there has been an increase in the use of finite control set model predictive (FCS-MPC) for power converters. Model (MPC) uses discrete-time system to predict future values variables all possible actions and computes a cost function related objectives. This technique can provide fast dynamic response. However, MPC method implementation imposes very high computational burden causes significant hardware requirements real-time implementation. In this paper, fully field-programmable...

Many modern commercial ships are electric ships, i.e., they utilize integrated propulsion (IEP ), where motors with variable speed drives used for ship propulsion. This provides a number of advantages, such as reduced size and weight, power availability aboard the ship, vibration, more flexibility in generation engine placement by eliminating mechanical connection between engines Most cruise many yachts, even cargo IEP. There is also significant interest IEP military ships.

The problems faced in generating analytical models for the insulated gate bipolar transistor (IGBT) and power diode are devising correct equations determining realistic boundary conditions, especially two-dimensional (2-D) features, while ensuring convergence of models. These issues addressed this paper relation to temperature dependent modeling NPT IGBTs diodes. Simulation experimental results presented compared validate approach.

The theory of synergetic control was introduced in a power electronics context previous paper. In this paper, we review the theory, then focus on some practical aspects with reference to both simulations and actual hardware. particular, address management current limit condition solve it several different approaches. Adaptive other laws are also improve performance. various controls evaluated by applying classical voltage step test load test.

This paper presents the application of compact insulated gate bipolar transistor and p-i-n diode models, including features such as local lifetime control field-stop technology, to full electrothermal system simulation a hybrid electric vehicle converter using lookup table device losses. The is simulated with an urban driving cycle (the federal schedule), which used generate transient temperature profiles. A methodology also described explore reliability profile, rainflow counting techniques...

A practical and accurate parameter extraction method is presented for the Fourier-based-solution physics-based insulated gate bipolar transistor (IGBT) power diode models. The goal to obtain a model enough allow switching loss prediction under variety of operating conditions. In first step procedure, only one simple clamped inductive load test needed six parameters required 12 15 nonpunch-through (NPT) punch-through (PT) IGBT models, respectively. second part procedure an automated formal...

A novel Passivity-Based Stability Criterion (PBSC) is proposed for the stability analysis and design of DC power distribution systems. The criterion based on imposing passivity overall bus impedance. If impedance ensured, guaranteed as well. PBSC reduces artificial conservativeness sensitivity to component grouping typical existing criteria, such Middlebrook its extensions. Moreover, easily applicable multi-converter systems in which flow direction changes, example a result system...

This paper first presents a step‐by‐step tutorial on modal analysis of doubly‐fed induction generator (DFIG)‐based series compensated wind farm. The model the system includes turbine aerodynamics, sixth‐order order generator, second‐order two‐mass shaft system, fourth‐order transmission line, an eighth‐order rotor‐side converter (RSC) and grid‐side (GSC) controllers, first‐order DC‐link model. Then, using time‐domain simulations, it is shown that fixed‐series DFIG highly unstable due to...

Subsynchronous resonance (SSR) damping in fixed-speed wind turbine generator systems (FSWTGS) by using two series flexible ac transmission system (FACTS) devices, the thyristor-controlled capacitor (TCSC), and gate-controlled (GCSC) are studied this paper. The former is a commercially available FACTS device, latter second generation of devices gate turnoff (GTO) or other gate-commuted switches. GCSC characterized fixed parallel with pair antiparallel switches enabling rapid control impedance...

This paper presents a new approach for creating real-time models of power electronic converters using dynamic neural networks. The are time-domain, switch-averaged, large-signal, real-time, and embeddable. combination characteristics renders the model uniquely suited to create digital twins converter which can run on any platform, including locally converter's controller. training dataset proposed network be generated from simulation (rather than measured hardware prototype) convenience....

Wide bandgap III-nitride semiconductor materials possess superior material properties as compared to silicon, GaAs and other III-V compound materials. Recent achievements in gallium nitride (GaN) technology for optoelectronics have resulted ultra-bright blue light emitting diodes lasers, ultraviolet emitters, solar-blind optical detectors. In the electronic area, drastic improvement of microwave device performance has been achieved, yielding record high power densities 20-30 W/mm. Novel...

The design process for a fuel-cell-based inverter system domestic use is discussed. peculiar characteristics of the fuel cell stack energy source require battery buffering. and requirements this application are A large number different possible solutions examined. proposed solution uses an active filter to compensate slow dynamics cell.

The process for designing digital controls power electronics is typically quite convoluted and affords many opportunities errors to occur. We present here a new complete method rapid prototyping of that allows realization designs. approach uses collection tools include both software (the virtual test bed (VTB) Matlab/Simulink) hardware (dSpace DSP). An example application the methodology completes discussion.

The theory of synergetic control was introduced in a power electronics context previous paper. In this paper we review the theory, then focus on comparison with sliding mode approach. Common elements and main differences are underlined illustrated through comparative simulation example. advantages that it is well-suited for digital implementation, gives constant switching frequency operation, better off-manifold dynamics. Finally, experimental results under transient conditions compared....

Although insulated-gate bipolar-transistor (IGBT) turn-on losses can be comparable to turn-off losses, IGBT has not been as thoroughly studied in the literature. In present work turn on under resistive and inductive load conditions is detail through experiments, finite element simulations, circuit simulations using physics-based semiconductor models. Under conditions, it critical accurately model conductivity-modulation phenomenon. clamped at there strong interaction between freewheeling...

Recent progress in the identification of switching power converters using an all-digital controller has granted network analyzer functionality to control platform. In particular, cross-correlation technique provides a nonparametric converter's small-signal control-to-output frequency response. The literature shows viability this as well few improvements basic technique. This online allows new flexibility areas monitoring and adaptive control. paper, several method system are proposed that...