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Blower Motor Test Rigs

Automated Test Bench for performance evaluation on Blower motors

Client 1: Based in Chengalpattu, Tamil Nadu, India

Test Bench Overview:

The test bench was designed to provide a self-contained platform to conduct type tests and performance validation tests on blower motors.

The test rig employs a low inertia air-cooled eddy current dynamometer, which is ideal for production line type of testing.

The test bench is automated and computerized for the purpose of proper sequencing of various tests, gathering data on performance parameters that yield information on performance characteristics of the motors.

Specifications of test blower motors

Rated torque (max)	6 kgcm
No load Speed (max)	4500 rpm.
Rated Speed ( max)	3500 rpm
Operating voltage	12 V dc.
Duty Rating	Continuous
Parameters Directly Measured	Instantaneous values of speed, torque, current and terminal Voltage to be plotted as a function of time.
Test requirements	Type testing and Performance validation of different models of blower motors.

Overall test bench specifications

Application	Type testing and validating the performance of Visteon make Blower Motors
Loading	*Dynaspede Eddy current Dynamometer* (rated for 60Ncm and max speed 7000 rpm)
Speed measurement	Inductive proximity sensor and a toothed wheel
Torque measurement	*Integral reaction type torque* sensor provided on the dynamometer
Control System	PC based control system, with WINDOWS based software developed in LabVIEW.
Tests conducted and Parameters monitored	No Load Test	No load Current No load Voltage No load speed
	Load Test	Voltage Current Speed Torque Input electrical power Output mechanical power Efficiency
	Dynamic transient test	The load is ramped gradually from *small loads* (*limited by drag torque of dynamometer) to rated load* conditions to plot the transient characteristics of speed, torque, current, voltage, power and efficiency.

II. Automated Test Bench for performance and endurance testing on Blower motors:

Client 2: Based in Bangalore, Karnataka, India

Test Bench Overview:
The test bench was designed to provide a self-contained platform to conduct performance and endurance tests on automotive blower motors for verification and design validation purposes. This test bench employs an advanced AC dynamometer for conducting tests from no load to stall conditions. The dynamometer has following advantages over the conventional form of loading.

Drag torque compensation: This feature would facilitate testing of motors from no load to stall conditions.

Inertia compensation: Faster system response, is achieved by advanced digital control circuitry.

The PC based control system allows the motors to be tested and verified under various conditions of no-load, partial load, transient dynamic load and stalled conditions to evaluate the performance. The instantaneous values of all the performance related parameters viz. speed, torque, current and terminal voltage sensed during the tests are displayed on the PC, and recorded in the form of function trends with respect to time.

Specifications of test blower motors

Stalling torque (Max)	3.0 Nm ( range 1.5 to 3 Nm)
Rated torque( max)	0.6 Nm ( range 0.2- 0.6)
No load Speed (Max)	12,000 rpm.
Rated Speed ( max)	5000 rpm ( range 2800 – 5000)
Operating voltage	12 V dc. ( range 12-13.5 V)
Maximum Power delivering ability	220 W
Parameters Directly Measured	Instantaneous values of speed and torque, Current and terminal Voltage all to be plotted as a function of time.
Test requirements	Performance characteristics and endurance testing of different models of blower motors.

Overall test Bench specifications

Test motors	Blower Motors
Loading	Dynaspede AC Dynamometer
Speed measurement	Inductive proximity switch and a toothed wheel
Torque measurement	High accuracy in-line brushless Rotating Torque transducer
Control System	PC based control system, with WINDOWS based software developed in LabVIEW.
Tests conducted and Parameters monitored	No Load Test	No load Current No load Voltage No load speed
	Load Test	Voltage Current Speed Torque Input power Output power Efficiency
	*Stall Test*	*Stall Current* *Voltage under stall condition* *Stall torque*
	Dynamic transient test	The load is ramped gradually *from no-load to stall conditions* to plot the dynamic characteristics of speed, torque, current, voltage, power and efficiency

Blower motor test rigs

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