BEN-GURION UNIVERSITY OF THE NEGEV PESC 03 A

Зарегистрируйтесь, чтобы просмотреть полный документ!

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 A Unified SPICE Compatible Model for Large and Small Signal Envelope Simulation of Linear Circuits Excited by Modulated Signals Simon Lineykin and Sam Ben-Yaakov* Power Electronics Laboratory Department of Electrical and Computer Engineering Ben-Gurion University of the Negev P. O. Box 653, Beer-Sheva 84105, ISRAEL Phone: +972 -8 -646 -1561, Fax: +972 -8 -647 -2949 Email: sby@ee. bgu. ac. il, Website: www. ee. bgu. ac. il/~pel []

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Power System Driven by a modulated signal [2]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Example 1: a Resonant Network Excited by a Modulated Signal [3]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Example 2: Electronic Ballast [4]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 [5] A Primer to Envelope Simulation Any analog modulated signal (AM, FM or PM) can be described by the following expression: The Current in the network excited by u(t):

BEN-GURION UNIVERSITY OF THE NEGEV Phasor Analysis Inductance PESC’ 03 [6]

BEN-GURION UNIVERSITY OF THE NEGEV Phasor Analysis Capacitance Resistance PESC’ 03 [7]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Splitting the Network into Two Cross-Coupled Components Imaginary and Real [8]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Splitting the Network into Two Cross-Coupled Components Imaginary and Real Load Component Imaginary Load Component [9]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 [10] Simulation Alternatives Cycle-by-cycle (full simulation) High and low frequencies Very long simulation Only transient AC transfer function -> point-by-point Envelope simulation (Large Signal -Previous study) Only low frequency Only transient AC transfer function -> point-by-point

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Example: Piezoelectric Transformer Driven by FM Signal (SPICE( [11]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Example: Piezoelectric Transformer Driven by FM Signal (SPICE( [12]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Example: Piezoelectric Transformer Driven by FM Signal (SPICE( [13]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Example: Piezoelectric Transformer Driven by FM Signal (SPICE( - Harmonic modulating signal [14]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Example: Piezoelectric Transformer Driven by FM Signal (SPICE( [15]

BEN-GURION UNIVERSITY OF THE NEGEV Or. CAD Schematics for Envelope Simulation (Large Signal) PESC’ 03 [16]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Results of Full and Envelope Transient Simulations The modulating input signal The Frequency modulated signal Output signal Envelope Cycle-by-cycle [17]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Objectives of this Study To extend the envelope simulation method to AC analysis A method that would not need an analytical derivation Same model compatible with DC, AC, and Transient analysis types [18]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Proposed Method – Small Signal Analysis Using AC–Simulation Amplitude modulation phasor The source is linear and suitable for AC analysis – as is [19]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Linearization of Sources for Angle Modulation Phase Modulation phasor =Ac Small signal =Ac*kp*u(t) Small signal PM – Nonlinear source Linear source [20]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Linearization of Sources for Angle Modulation Frequency Modulation phasor =Ac Small signal =Ac*kp* u(t)dt Small signal FM – Nonlinear source Linear source [21]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Results: Piezoelectric Transformer Driven by FM signal (AC and Point-by-Point) for Different Carrier Frequencies [22]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Results: Piezoelectric Transformer Driven by FM signal (AC and Point-by-Point) for Different Carrier Frequencies [23]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 [24] Frequency Response of the Network (unmodulated input signal) using DC-sweep in envelope simulation is equivalent to frequency sweep in full simulation The parameter of DC sweep is a carrier frequency fc The source for DC sweep:

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Example: Frequency Response of Piezoelectric Transformer with Different Resistive Loads [25]

BEN-GURION UNIVERSITY OF THE NEGEV PESC’ 03 Conclusions Envelope simulation method was extended to cover all simulation types: Transient, AC, DC. Method is suitable for any linear circuit. Method is also suitable for nonlinear circuits that can be linearized for small signal. [26]

Скачать презентацию BEN-GURION UNIVERSITY OF THE NEGEV PESC 03 A

9446f099b1c842dfc5d8885d1fc81c5d.ppt

Количество слайдов: 26