Motor Measurement,
from Performance Analysis to Quality Testing

Improving Motor Performance and Quality High-Precision Measurement Solutions

Hioki offers a diverse array of motor measurement solutions that can be used in applications ranging from performance analysis to quality testing. The ability to assess and analyze using high-precision measurement technologies provides valuable assistance to engineers as they work to increase motor performance and quality.

Evaluating Inverter Motor Efficiency and Loss

Simultaneously measure inverter input and output power, and motor output.
Evaluate inverter, motor, and overall system efficiency and loss in an accurate and highly reproducible manner.

Inverter motor ECU measurement and compliance testing

Make quick work of PCU compliance testing by taking advantage of PW6001 and INCA link functionality so that you can use the PW6001 to perform accurate power and motive power measurement. You can simultaneously monitor CAN bus data and ECU RAM values.

Identifying PMSM Motor Parameters

Identify more accurate motor control motor control by using motor parameters measured under actual operating conditions in upstream design processes.

Test Automobile Fuel Economy

Taking fuel economy measurements that comply with WLTP international standards requires the precise measurement of current integration and power integration for the recharging/discharging of each battery in the system.
High accuracy clamp current sensors, the excellent DC accuracy of the PW3390, and the ability to integrate current and power at 50 ms intervals are extremely effective in meeting this application.

Measuring Motor Temperature

Apply thermocouples to the motor frame and winding to record temperature variations.
Display and record differences in temperature relative to the measurement environment as a waveform in real time.

EV and EV Motor Evaluation Using CAN/CAN FD

Accurately assess behavior during HILS testing and vehicle evaluation by simultaneously measuring control and sensor data on the CAN bus and actual analog values.

Measuring Dynamic Motor Characteristics

Record inverter output voltage and current, torque, and RPM from motor start to stop.
Calculate inver ter output power, motor power, and motor efficiency using waveform calculations.

Measuring Motor Torque Vibrations

Measure torque and vibration, and analyzebehavior during motor operation.
Discover resonance phenomena and other unpredicted frequency components by using FFT calculations to perform a frequency analysis.

Measuring Resolver Rotation Angles

A resolver is used as a sensor to accurately measure the angular position of the motor.
Resolvers are used in harsh environments such as industrial motors, servers, and electric vehicles (EVs) because they can operate under demanding conditions for extended period of time. In order to increase EV range, it's necessary to control motors with a high degree of precision so as to boost their energy efficiency.

Performing Layer Short Testing of Motor Windings

Detect insulation failures (layer shorts) and deterioration in motor windings.
Generate pass/fail judgments with greater precision than conventional approaches by quantifying response waveforms.

Performing Motor Winding Maintenance

Perform impulse testing and use the results in motor winding maintenance and trend management.

Observation of Partial Discharges During
Breakdown Voltage Testing

Detect partial discharges by observing current and voltage waveforms during breakdown voltage testing.
By checking for partial discharges, which can lead to insulation breakdown, you can ascertain whether a coil contains any latent defects.

Measuring Motor and Winding Insulation Resistance and Withstand Voltage

Carry out insulation resistance and withstand voltage testing.
Ensure a high level of safety by testing the state of insulation as part of shipping inspections.

Measuring Winding Resistance

Check for wire breaks by measuring winding resistance with a high level of precision.
Check for incorrect wire thickness and turn count by using a high-precision resistance meter to make the measurements.

Measuring Motor Coil Inductance

Measure winding inductance. Check phase balance, motor dynamic performance, RPM variations, and compatibility of the driver motor.

Measuring Motor Weld Resistance

Test weld quality (check for weld defects) in rectangular wire stators using a DC resistance meter with high resolution and measurement accuracy.
Motor measurement application
Evaluating Inverter Motor・Efficiency and Loss
Inverter Motor ECU Measurement and Compliance Testing
Identifying PMSM Motor Parameters
Test Automobile Fuel Economy
Measuring Motor Temperature
EV and EV Motor Evaluation Using CAN/CAN FD
Measuring Dynamic Motor Characteristics
Measuring Motor Torque Vibrations
Measuring Resolver Rotation Angles
Performing Layer Short Testing of Motor Windings
Performing Motor Winding Maintenance
Observation of Partial Discharges During Breakdown Voltage Testing
Measuring Motor and Winding Insulation Resistance and Withstand Voltage
Measuring Winding Resistance
Measuring Motor Coil Inductance
Measuring Motor Weld Resistance
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