Renesas - Tune & calibrate your motor in a few mouse-clicks
-
Upload
vincent-mignard -
Category
Technology
-
view
583 -
download
1
description
Transcript of Renesas - Tune & calibrate your motor in a few mouse-clicks
1
Markt & Technik Symposium – Electrical Drives
Andrea Ghirardello | BFG EngineeringVincent Mignard | Renesas Electronics Europe
Thursday the 10th of October 2013 Rev. 1.1
00000-A
Tune & Calibrate Your Permanent Magnet Motorin a few Mouse-ClicksIntroduction
2Corbis Copyright
3Corbis Copyright
4
3 Men 3 Months €200K
5
6Corbis Copyright
7
8Corbis Copyright
9
IEC 60730Safety compliance
OutstandingNoise immunity
Automatic shutdownA/D converter self-diagnosis
Running Overload detection
10
How to tune & evaluate ?
Corbis Copyright
11
In a few clicks, the software is tuned to the custom motor and ready to run.
12
External Parts Cost (€)
- Quad Op-Amp IC 0.3- PCB used by Op-Amp 0.20- Mounting & testing 0.40 TOTAL € 0.90
Royalty-free vector control sensorless software
High integration, low BOM costs, e.g. Op-amp saved up to €0.9
Available now @ €99/kit
Schematics, gerber files, BOM list available
Corbis Copyright
13
1 Man 1 Month €30K
14
15
Markt & Technik Symposium – Electrical Drives
Andrea Ghirardello | BFG EngineeringVincent Mignard | Renesas Electronics Europe
Thursday the 10th of October 2013 Rev. 1.1
00000-A
Tune & Calibrate Your Permanent Magnet Motorin a few Mouse-ClicksTheory
16
Where are the mysterious parameters?
Kp Ki motor specific coefficients
17
MotorCurrent PIcontroller
v(t)Error ResponseReference
What is the current PI role?
)()()( tErrorKtErrorKtv ip
Kp Ki motor specific coefficients
18
How to modelize the motor?
Measurement of
L/R and 1/RKp Ki
v(t)L
R
i(t)
Motor modelized
RL
t
eR
Vti /1)(
V/R
L/R
V/L
t
i
then)(1)( if tVtv
19
How to find Kp and Ki?
t
v
A voltage step is applied to the motor
Step #1 Step #3
L/R and 1/R extracted
Kp and Ki calculated !Kp Ki
Step #2
The motor response is measured by the MCU
20
Where are the mysterious parameters?
Rs mLs motor specific coefficients
21
Which motor equations uses the Flux Estimator?
dt
diRv
dt
diRv
s
s
ms
ms
iL
iL
iRv
iRv
s
s
)( mss ILjIRV
Rs mLs motor specific coefficients
22
How to find Rs , Ls and m ?
Step #2
Three motor responses measured by MCU Rs mLs
Step #3
Solve the 3 equations of 3 unknowns &
extract:Three stimulations applied to the motor
Step #1
23
Rs mLs
Kp Ki
The auto-calibration is done !
24
Let’s try now to tune this AC Brushless motor
25
www.renesas.eu/rx62tkit