Alternative Time-Invariant Multi-Frequency Modeling of PWM DC-DC Converters

Behjati, Hamid; Niu, Lei; Davoudi, Ali; Chapman, P.L.

doi:10.1109/tcsi.2013.2252641

Cited by 45 publications

(27 citation statements)

References 31 publications

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“…The initial guess value x (0) h is usually zero, and the optimal initial guess valueD (0) is the root itself determined by (26). SinceD (0) cannot be expressed explicitly in (26) by associating m 0 , m kc and m ks in terms of x f and x (0) h , a mechanism to estimateD (0) within simulation has been implemented in [9], [14] by applying one-step Newton-Raphson method with an initial guess value m 0 , which yieldŝ…”

Section: Newton-raphson Methodsmentioning

confidence: 99%

Reduced-order multifrequency averaging in naturally sampled PWM converters

Pan

Cramer

2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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Multifrequency averaging is a generalization of the state-space averaging technique for representing converters in which large ripple may be present. Herein, a method of representing naturally sampled PWM converters using reduced-order multifrequency averaging is proposed. An associated NewtonRaphson method is developed to achieve fast convergence in simulation. The proposed method is capable of predicting the system average behavior and system stability.

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Section: Newton-raphson Methodsmentioning

confidence: 99%

Reduced-order multifrequency averaging in naturally sampled PWM converters

Pan

Cramer

2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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“…Automotive traction application is different from the above owing to dynamic torque demand and variable frequency of operation. Moreover, SSA is unable to compute switching ripples or their cross-coupling effects [8]. MFA performs well if the minimum computation requirement is preferred [9].…”

Section: Mfa Reviewmentioning

confidence: 99%

Multi‐frequency averaging (MFA) model of a generic electric vehicle powertrain suitable under variable frequency of averaging developed for remote operability

Sen

Evans

Johnson

2020

IET Electrical Systems in Transportation

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Geographically distributed hardware-in-the-loop (HIL) testing has the potential to allow hybrid vehicle powertrain components (battery, motor drive, and engine) to be developed at geographically remote locations but tested concurrently and coupled. Inter-location internet communication links can allow non-ideal behaviour observed in a physical component in one location (e.g. an electrical drive) to be imposed on another physical component elsewhere (e.g. an ICE), and vice-versa. A key challenge is how to represent the behaviour of a remote, physical component under testing in a local HIL environment. Internet communications are too slow and unreliable to transmit waveforms in real-time and so one solution is to use a local 'slave' model whose behaviour and parameters are tuned based on observations at the remote location. This study proposes a multifrequency averaging (MFA) slave model of an electric motor drive system for use in this application; it addresses a weakness in previously published work by extending the MFA model to variable frequency operation. The model was benchmarked against experimental operation (and its equivalent simulation model) in open-loop and closed-loop space vector pulse-width modulation control strategy, fixed and variable frequency operation. Results show significant reconciliation of model and experiment.

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“…These methods, however, generate low-frequency models that cannot reproduce the wide-band behavior of switching circuits. Alternative simulation techniques are available that provide the frequencydomain representation of the steady-state response [4]- [9]. Operating directly in the frequency domain has the relevant advantage of avoiding the calculation of possibly long transients and any issue related to the proper choice of integration time step and waveform windowing, which may impact the accuracy and the efficiency of the simulation.…”

Section: Introductionmentioning

confidence: 99%

Steady-State Analysis of Switching Converters via Frequency-Domain Circuit Equivalents

Trinchero

Manfredi

Stievano

et al. 2016

IEEE Trans. Circuits Syst. II

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This brief presents a frequency-domain approach for the steady-state analysis of pulse-width modulated converters and switched circuits with non-ideal switching behavior. The proposed strategy generalizes recent methodologies based on the Fourier expansion of the steady-state responses of a periodically switching circuit and on the simulation of an augmented linear time-invariant system. This system is now also given an interpretation in terms of an equivalent circuit, which is simulated at a single frequency point to solve for all the harmonics. The method offers a modular topological approach that is combined with standard tools for circuit analysis and enables the simulation of networks with an arbitrary number of switches and driving mechanisms. Single, multiple, and possibly non-ideal commutation events within the switching period are handled in the same framework, without additional complexity. The technique allows for the full frequency-domain characterization of both the functional and the noisy behavior of the circuit responses. The feasibility and strength are demonstrated via comparisons with simulations and measurements on two application examples, i.e. a full-bridge single-phase inverter and a dc-dc boost converter.

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Alternative Time-Invariant Multi-Frequency Modeling of PWM DC-DC Converters

Cited by 45 publications

References 31 publications

Reduced-order multifrequency averaging in naturally sampled PWM converters

Reduced-order multifrequency averaging in naturally sampled PWM converters

Multi‐frequency averaging (MFA) model of a generic electric vehicle powertrain suitable under variable frequency of averaging developed for remote operability

Steady-State Analysis of Switching Converters via Frequency-Domain Circuit Equivalents

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