Michel Arpilliere

Design of a boost power factor correction converter using optimization techniques

This paper presents an approach to continuous variable design optimization of a power electronics converter. The objective of the optimization approach is to minimize the total component cost. The methodology is illustrated with the design of a boost power factor correction front-end converter with an input electromagnetic interference filter. The system design variables are first identified. The relevant system responses and component costs are then expressed as a function of these design variables. Finally, by using mathematical optimization techniques, the design variable values that minimize the total system component cost are obtained, given practical constraints on these design variables and system responses.

Design optimization of a boost power factor correction converter using genetic algorithms

This paper presents a software tool for designing a low-cost boost power factor correction front-end converter with an input electromagnetic interference filter. A genetic algorithm based discrete optimizer is used to obtain the design. A detailed and experimentally validated model of the system, including second order effects, is considered. A graphical user interface for managing the design specifications and system component databases, controlling and monitoring the optimization process, and analyzing the performance of the top designs found by the optimizer is also described. The results of a design study for a 1.15 kW unit are presented to demonstrate the usefulness of the software tool.

Busbar Design: How to Spare Nanohenries ?

This paper intends to compare the many different solutions available to design a busbar interconnection. Starting from a single copper plate and going to multilayer busbars, the influence of the external shape of the sheet, of the number and the nature of holes and apertures are considered. Simulations and measurements are used to determine the stray inductance of the different busbars. Design rules are deduced from the many case studies, based on industrial examples

Experimental evaluation of IGBTs for characterizing and modeling conducted EMI emission in PWM inverters

As a step to achieve the objective of predicting electromagnetic interference (EMI) noise in IGBT PWM inverters, this paper proposes a new and practical EMI noise source modeling method. An equivalent Thevenin source in the frequency-domain, including the voltage source and source impedance, is employed to model the main EMI noise emission source - the IGBT switching. The modeling approach for both the differential mode (DM) and common mode (CM) noise source is studied. The methodology is verified experimentally using a simple, controlled testbed. The important issues on measurement repeatability and data processing are also investigated and discussed.

A Simple Carrier-Based Modulation for the SVM of the Matrix Converter

Today, industry has not fully embraced the matrix converter solution. One important reason is its high control complexity. It is therefore relevant to propose a simpler but efficient modulation scheme, similar as three phase voltage source inverter modulators with the well-known symmetrical carrier-based ones. The modulation presented in this paper is equivalent to a particular space vector modulation (SVM) and takes into account harmonics and unbalanced input voltages, with the same maximum voltage transfer ratio (86%). The aim of this work is to propose a simple and general pulse-width-modulation method using carrier-based modulator for an easier matrix converter control. Furthermore, a simple duty cycle calculation method is used, based on a virtual matrix converter. Finally, simulations and experimentations are presented to validate this simple, original and efficient modulation concept equivalent to matrix converter SVM.

Voltage source inverter

This article presents an EA-based design optimization tool for a three-phase voltage source inverter with diode front-end rectifier used for industrial motor drive power stage considering all major subsystems front-end rectifier, inverter and thermal management system, and EMI filter. Analytical relationships are developed and implemented into three optimizers. Global optimization is achieved by considering the relations between the subsystems. Design examples verified the usefulness and correctness of the design methodology and tool.

Analysis and Design Optimization of Diode Front-End Rectifier Passive Components for Voltage Source Inverters

This paper presents a systematic design optimization approach for inductors and capacitors in diode front-end rectifiers for voltage source inverters. Analytical relationships between various design variables, operating conditions, and performance and physical constraints are established under nominal, overload, and inrush conditions. A new method to analytically calculate the inrush current is developed considering the nonlinear characteristics of the inductor core materials. A design optimization program based on the established analytical relationships and a genetic algorithm is developed. Examples show that the optimization process can lead to a smaller/lower cost inductor and capacitor design. Experiments are conducted to verify key analytical relationships and the optimized design.

Optimizing EMI filter design for motor drives considering filter component high-frequency characteristics and noise source impedance

This paper proposed an integrated passive EMI filter design procedure with consideration of the component high-frequency characteristics and noise source impedance. There is no longer any need for the traditional cut-off frequency or attenuation slope concepts. Considering DM current amplitude for the CM choke design, so the designed filter will work under drive normal operations includes core saturation effect. The temperature effect on choke impedance is also modeled, which means the winding wire selection is optimally determined by loss and thermal models, and no experimental current density value needed. The high-frequency filter attenuation check is not needed, the design cycle of the EMI filter can be greatly reduced, and over-design of the filter can be avoided. The proposed method can be easily implemented into optimization software with certain noise prediction methods, to realize systematical optimization of drive systems.

Analysis of the tradeoffs between thermal behavior and EMI noise levels in a boost PFC circuit

The need to provide power factor correction (PFC) and low electromagnetic interference (EMI) is required in a growing number of applications. The boost PFC circuit is widely used to fulfil this requirement because it can easily be implemented to provide a high power factor with high efficiency. The aim of this work is to provide insight into the tradeoffs between reducing the EMI noise levels and the penalties, or advantages, incurred in the thermal performance of the circuit. A 1 kW boost converter with 230 V AC 50 Hz input and 368 V output has been constructed for this study.

Analysis and design optimization of front-end passive components for voltage source inverters

This paper presents a systematic design optimization approach for inductors and capacitors in front-end rectifiers for voltage source inverters. Analytical relationships between various design variables, operating conditions, and performance and physical constraints are established under nominal, overload and inrush conditions. A new method to analytically calculate the inrush current is developed considering the nonlinear characteristics of the inductor core materials. A design optimization program based on the established analytical relationships and a genetic algorithm is developed. Examples show that the optimization process can lead to a smaller/lower-cost inductor and capacitor design.