Accelerate Motor Mapping And Drivetrain Analysis With Advanced Power Analyzer
by Mike Hoyer, HBM Test And Measurement, Madison, Wisc, How2Power Today, Jul 16 2018
Focus:
Evaluating motor efficiency has become extremely important since significant efforts are
focused on making electrical machines and drives more efficient. The main issue is how to
implement an accelerated procedure that obtains the motor or drive efficiency for all operating
points accurately and rapidly. Ordinary test methods using a typical power analyzer only offer
inadequate numerical results. To achieve better results, all electrical, mechanical and
physical signals must be acquired synchronously at high sample rates with advanced real-time
custom analysis coupled with fast data transfer to automation systems. This article will
outline how to accurately and significantly accelerate efficiency motor mapping; and how to
speed up calculations of dq0 (Park) and space vector (Clarke) transformation or any motor,
inverter and drivetrain custom analysis. As explained here, these operations can be performed
in seconds instead of hours or days using HBM’s eDrive solution, a power analyzer designed for
motor testing. The article begins with a review of the elements affecting the efficiency of
electrical (variable speed) drive trains, test instruments and methods used to measure their
efficiency and the shortcomings of these methods.
What you’ll learn:
- How to perform efficiency mapping of electric motors and drives rapidly and accurately
- How to understand the limitations of conventional power analyzers in testing electrical drive trains
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