Automotive Electrical And Electromechanical System Design

Automotive Electrical and Electromechanical System Design Dr.-Ing. Uwe Knorr

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Challenge #1: Multi-Domain Design Electrical

Controls

Mechanical

Hydraulic















Multi-Domain Design \

u

e

0

0

0

Multiple Domains are interconnected and

\

u

e

0

0

0

The electrical content of vehicles increases

each other

domains















tiy x e l p m o C

Challenge #2: Multi-Level Design INREG

+

vbus

VBUS>=VSET

I_main

V

D1

VM1

VBUS
EQU

OUTREG vset

vbus := VM1.V NL1

GAIN2

sp

GAIN

NL

XY1 engine2generator VSET

I1

XY

GAIN3

CONST

GAIN

VBUS

GAIN4

CONST

GAIN

GAIN1 GAIN

ERR

v1d (t) = i1d (t) ⋅ R1 + v1q (t) = i1q (t) ⋅ R1 +

INTG1

SUM1

I

dψ

1d

(t)

dt dψ 1q (t) dt

LIMIT1 LIMIT

−

p ⋅ ω (t) ⋅ ψ

1q

+

p ⋅ ω (t) ⋅ψ

1d

(t)

(t)

ts n e n o p m o C f o #















Multi-Level Design Different analyses require different model accuracy levels Different analyses require different algorithms

Different accuracy levels require different modeling languages Model exchange from one level to the next higher















Challenge #3: Multi-Organizational Design OEM System

Tier I Subsystem

















Multi-Organizational Design Analysis

Model

















Design Challenges Today Thermal System

Tier 2 Supplier

















Need for Integration System

















EM Design Environment Maxwell2D/3D

Electromagnetism Electro mechanics

SIMPLORER Simulation Data Bus Simulator Coupling Technology

Simulink

















Integrated Design Environment



















Compatibility

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Post Processing


representation FFT Presentation Mode


















Component Characterization

•lookup Loadstable



















State Machines

topologies & parameters

modification values



















Relay Model































can be assigned an individual sampling time or run with system time step













LA := 9.5m KE := 0.544 J := 4m

























Battery Wire Wire - Thermal - Thermal dynamic dynamic

Fuse - -Double Lamp Relay Normally Filament Element Open

Alternator - Transient Model Inertia

PWM Terminal Inline Engine - Speed Source Pair

FuelWire Wire Cell - Thermal - Thermal dynamic dynamic II II

Fuse - -Advanced Lamp Relay Normally Single Filament Closed

Alternator - Average Model Friction

PWM Switch Eyelet Engine Terminal - Dynamic Model

Wire Wire withwith Thermal Thermal Pin Pin

PPTC (Three Lamp Relay - One Double Pole, RC Filament combinations) Two Throws

Alternator - Current Source Fan

PWM Load

Wire Wire - Advanced - Advanced

PPTC (Two Lamp Relay - Two Advanced RC Poles, Combinations) Two Throws

Starter Ideal Gearbox

Flasher Switch

Wire Wire - Advanced - Advanced II II

Relay - Two Poles, Cross-Strap

DC Machine Gearbox with Losses

Gauge based

























Easy parameterization using Wizard technology Statistical analyses, optimization and parameter variations Characterization tool for fuses Multiple model levels for components Web based example database with jump start projects Animated symbols for easy visual inspection

























and reference Control modeled using state current machines modification modeled using state machines













• VHDL-AMS • Mechanics • Electro Mechanical • Magnetics





































Single B2 B6 Bridges Diode Phase Bridge - Inverse Power Supply Parallel Connection

Three Two Level Level Square Three Wave Phase NS Phase Two Level Inverter

Ideal B2 B12 Fully Diode Three Controlled Bridge Phase Power Supply

Four Two Level Quadrant Natural Current Sampling Control













driven squirrel













Auxiliary elements, such as power grid models and loads















Mechanical Elements Library Mechanical Systems Rotational

Coordinate Transformation

Mass Rigidity Torque Source Angular Velocity Source Ground

Translational-Translational Electrical Machines

Translational Mass Rigidity

SYMP Synchronous Machine Permanent Excitation

Force Source

SYMP Synchronous Machine Permanent Excitation w Damper

Velocity Source Ground















Mechanical Elements Library ET1

Motor-generator

Square_wave1.VAL

M

Stf1

DCMP

STF

M

DCMP

Dcmp1

Dcmp2

J := 2m

J := 2m

M

Stf2

DCMP

Mas1 J

STF

Dcmp3 J := 2m

J := 10m

250.00

Dcmp1.VA Dcmp2.VA Dcmp3.VA

100.00 0 -100.00 -250.00

0

0.50

1.00 t















Mechanical Elements Library Benefits

Non-linear friction models incl. stick friction

SIMPLORER C-Code interface

Electrical Machine model implementation with mechanical pins provide connectivity between electrical and















Multi-Organizational Design VHDL-AMS

Simulink

MathCad

Sim-Interface

External Simulators

SIMPLORER Simulation Data Bus Internal Simulators















VHDL-AMS Schematic Fully

Embedded

















VHDL-AMS Code for a Resistor ENTITY Resistor IS PORT (

Resistor p

m

















Entity and Architecture Entity Interface description of a subsystem or physical

Architecture Behavior description of the model

















VHDL-AMS Basic Library OPEN!

















VHDL – Digital Systems A.val

Two bit adder with Carry

B.val

















VHDL – Digital Systems Complete Automotive System Analysis across Domains • ASICs



















VHDL-AMS Multi Domain Design



















VHDL-AMS

Suppliers

Fuel Sensors Fuse Economy ……



















DC Drive – VHDL-AMS Controller



















DC Drive – VHDL-AMS Controller



















C/C++ Interface

Elements



















Link Library .dll













and load torque

Voltage and Current

























is an open API integration interface that canand S-function be used forin other Matlab

























































































































Successive Monte CarloApproximation



























Integrated Technologies s/ am es r ag chin i D a k oc te M l B ta S Simulator Coupling

C irc u

Matlab/ Simulink

its

MathCAD Co-Simulation















Integrated Design Environment

S

s d ar d n ta

A cc u ra cy

C

Automotive Electrical And Electromechanical System Design

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