DRIVES CONTR S & MOTO S, C,
NTROLS & MOTORS
FEA
FEAT RE ATURE
Gett ng beyond numerical results for testing electric rid
rivetrain
Unfortunately, there are several issues w th this traditional setup: • There is no time
• Real-ti mo
Evaluating m tor efficiency has become extremely i recent developments are focused onm re efficient electrical chines and drives. The m in issue is how to implement an accelerated procedure that obtains the m tor or drive efficiency for all operating points safely,, accuratelly and rapiidly
Unfortunately, there are several issues with this traditional setu • T ere is n tim
synchronisation between all the asurement systems; therefore, it difficult or nearly i mp
possible to ma O
rdinary test mird nary test methods using a typical power analyser only
typical power analyser onl
offer numerical results. To get beyond numerical results, al
offer numerical results. To get beyond numerical results, all electrical
simultaneously at high sample rates, coupled with advanced real- ti
signals m st be acquired si
aneously at high sampl
rates, coupled with advanced real time custom analysis and fast data transfer to automation systems. This m kes it possible to perform electric m tor and drive efficiency apping accurately and rapidly, as el as al
customanalysis and fast data
transfer to automation systems. This makes it possible to perform electric motor and drive efficiency mapping accurately and rapidly, as well as almost any type of advanced analysis.
st any type of advanced analysis. MAXIMUMIMAX MUM EFF CIENCY EFFICIENCI
Electrical drives are used i a w de variety of appl ations, basical every electrical
Electrical drives are used in a wide variety of applications, basically every electrical machine that is inverter driven or contains a
chine that i inverter driven r co
variable speed drive. The key is to design and test for the maxi efficien y at all o eratin the entire drivetrain safely, accurately and rapidly.
signals along the
variable speed drive. The key is to design and test for the maximum efficiency at all operating poiints innts in the entire drivetrain safely, accurately and rapidly. Traditional
eters are
electrical, mechanical and physical signals must be acquired
echanical and physical thods using a
chanical (torque/ speed) and electrical (voltage/current) signal at the same point in time. • No raw data is available;
• Typical power analysers onl
synchronisation between all th measurement systems; therefore, it is difficult or nearly impossible to make comparisons between mechanical (torque/ speed) and electrical (voltage/current) signals at the same point in time. • N raw data is available;
therefore, no advanced analysis can be performed.
therefore, no advanced analysis can be performed.
• Typical power analysers only offer a few calculations per second, not enough for feedback on automation/control systems. • Power m ters are not reliable during dynamc l ad changes, start up or any chang area that needs analysis.
further testing and es in speed, an
• V rification of results is not possible because no raw data is available, requiring retesting if anything is in question.
• Verification of results is not possible because no raw data i availab e, req rin retesting if is in
tio
As a result, one needs to m ke several assumptions about issues and errors; make changes based on those assumptions and then retest, ich is time con
As a result, one needs to make several assumptions about issues and errors;
ing an rather costly. ake changes based on
those assumptions and then retest, which is time consuming and rather costly.
Traditionally, signals along the drivetrain are measured w th a w de range ofm asurement systems. For exam , digital
drivetrain arem asured with a wide range of measurement systems. For example, digital multimeters are used for battery voltage and current easurements and traditional
With the eDrive Testing solution, HBM has introduced a tool that is said to o ercom the limitations of the typical test m thod using a gh speed data acquisition pow analyser. Benefits i clude:
th the eDrive Testing solution, has introduced a tool that is
said to overcome the limitations of the typical test method using a high speed data acquisition power analyser. Benefits include:
used for battery voltage and current measurements and traditional power analysers for m asuring the output of the inverter. Sometimes a scope is used to view the signals. To easuremachine output, a torque sensor and some type of data acquisition systemis used.
power analysers formeasuring the output of the inverter. Sometimes a scope is used to view the signals. To measure machine output, a torque sensor and some type of data acquisition system is used.
• Synchronous recording of all drivetrain signals, so mechanical and electrical traces can be compared accurately plus easily configurable to test 3, 6 or 12 phase machines and acquire more signals like CAN, temperature, vibration and strain
/AUTOMAT /AUTOMA ION ATION
• Synchronous recording of all drivetrain signals, so m chanical and electrical traces can be com ared accurately plus easily configurable to test 3, 6 or 12 phase m chines and acquire m re signals l ke CAN, temperature, vibration and strai
offer a few calculations per second, not enough for feedback on automation/control systems. • Power meters are not reliable during dynamic load changes, start up or any changes in speed, an area that needs further testing and analysis.
• Real-time advanced analysis like motor ma
e advanced analysi mapping, dq0 (Park)
and Space Vector (Clarke)
transformation enables immediatediate results rather than hours or days. • Transfer real-ti
and Space Vector (Clarke) transformation enables i
results rather than hours or days. • Transfer real-time calculated results to automation systems via EtherCAT at 1,000 results per second.
calculated
results to autom tion systems via EtherCAT at 1,000 results per second.
• Perform real-time power • Performreal-time power
calculations per half cycle with a typical 0.02 per cent power accuracy even during dynamc l ad changes, start up or any changes i • Verificatio
calculations per half cycle wth a typical 0.02 per cent power accuracy even during dynamic load changes, start up or any changes in speed. • V rification of results is possible because raw data is
speed. f results is p ssible any ti any time because raw data i
available, so no retesting is needed if an
available, so no retesting is needed if a ything is in question.
is in SIGNIFICAN SIGNIFICANT SAV ti tio AV NGS VINGSI
HBM’s new efficiency testing method provides a tool which offers savings i
analyse electrical
s new efficiency testing thod provides a tool which offers savings in time and cost, whiile accelerating the ability to analyse electrical motors, inverters and drivetrains with any type of rapid analysis i
and cost, le accelerating the ability to tors, i verters
and drivetrains with any type of rapid analysis in a matter of
am tter of
seconds rather than hours or days. As a result, this makes it possible to clear the way for even more efficient electric m tors, inverters and drivetrains at a rapid rate, thereby boosting productivity, capabi ty and research and ent in every
seconds rather than hours or days. a result, this m kes it p ssible
to clear the w y for even m re efficient electric motors, inverters and drivetrains at a rapid rate, thereby boosting productivity, capability and research and velo
development in every appliication that incorporates an electrical chine that is inverter driven or contains a variable speed drive.
catio
that i corporates an electrical machine that is inverter driven or contains a variable speed drive.
White papers on the topi
‘Analysis of electrical inverters and machines’ are available to download via the HBM ht
e papers on the topic nalysis of electrical
www.hbm. m/ verters
and m chines’ are avai ble to download via the HBM website:bsite:
https://www.hbm.com/en/6757/h bm-edrive-testing-power- analyzer-solution/
bm-edrive-testing-power- analyzer-solution/
AU AUTOMA MAT ATION | JUNE 2017 JUNE 201 19 19
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Evaluatingmotor efficiency has become extremely important sinceportant since recent developments are focused on more efficient electrical machines and drives. The main issue is how to implement an accelerated procedure that obtains the motor or drive efficiency for al operating points safely accurate y and rap dl
Gettiing beyond numerical results for testing electric andan hybrid drivetrains
Focus on Vision on Vision
Colour Inspection Colour Inspec
pecttion
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