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MDS SOFT DYNAMOMETER

MDS -  Portable Inertia Dyno

CWIEME 2019 Global Awards
2018 AEMT Awards Finalist

Self-calibrating Portable Dyno

The Soft Dyno produces complete, full-range mechanical and electrical performance curves, including losses and efficiency, for any type or size of the motor, without using a loading device. The new but IEEE/IEC/NEMA -compliant process measures voltage, current, and speed during uncoupled motor starts, meaning no more need for complex, expensive, limited-range dyno infrastructure to performance test motors.


Its unique, patented data consistency and self-calibration checks assure confidence in the results by laws of physics and motor design. Have a need for performance curves after a repair, in production, while commissioning or troubleshooting? If you can start the motor across-the-line, with a line-frequency soft-start (discrete-tapped or ramped-voltage transformer), or with a drive, this technique will produce performance curves. [US Patent No. 10,698,031 ]

MDS -  Portable Inertia Dyno Product Details:

FULLY COMPLIANT, SELF-CALIBRATING, MOTOR PERFORMANCE TEST RESULTS WITHOUT A DYNO

  • Uncoupled Starts
  • Self Calibrating
  • Covers Full Speed Range
  • Far Exceeds IEEE-112
  • Induction, DC, BLDC Motors
  • Across the Line or Soft Starts

Results for Induction Motors

  • Current
  • Voltage
  • Speed
  • Input Power
  • Torque
  • Acceleration
  • Efficiency
  • Static and Dynamic Friction
  • Rotor Inertia
  • Core Loss
  • Back EMF due to Residual Magnetism
  • IEEE-112 Circuit Parametersring

The above values can be analyzed Vs RPM or Vs Time


Results for Current

VoltaPMDC, BLDC, and Micro DC gearmotors


The following values can be analyzed Vs RPM or Vs Time:

  • Current
  • Voltage
  • Speed
  • Input Power
  • Torque
  • Acceleration
  • Efficiency
  • Torque Constant Kt
  • Voltage Constant Ke
  • Static and Dynamic Friction
  • Rotor Inertia, Resistance
  • Inductance

Top of Menu

  • Smart/Variable speed resolution accommodates poor/noisy tach setup
  • Low pass filtering removes HF noise
  • Instrumentation and setup errors can be corrected during or after the test
  • Self-calibrating cross checks assure adherence to laws of Physics and high confidence in results

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