Ohtama Co., LTD. – Specializing in permalloy, magnetic shielding, magnetic field measurement, heat treatment and magnetic field cancellation.

e-MotorChamber: System Detailse-MotorChamber_details

e-MotorChamber Demonstration Anechoic Chamber Equipment

This page introduces the system equipment such as the long shaft and dynamometer.

*The demonstration anechoic chamber is located in the Fujimatsu Laboratory at the Tokai EMC Center of e-OHTAMA, LTD.

 

We will also explain optional extras available when purchasing a new or modified system, including delivery dates and a rough schedule for deployment.

 

 Shaft

The system uses a shaft with a length that can secure a distance of 1,000 mm or more from the microwave absorber to the test sample. Noise transmitted from the shaft that penetrates the wall of the anechoic chamber is also eliminated.

*The shaft is covered with metal for safety reasons.

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 Cooling chiller (for sample)

The system is equipped with a chiller that offers both water cooling and oil cooling.

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  Inverter and battery simulator

Size:
5,000 x 700 x 2,500 mm (W x D x H)

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 Motor mounting part

We can also supply a test motor mounting jig (please contact e-OHTAMA).

 Dynamometer

The dynamometer achieves high-speed rotation of 20,000 rpm or more. It is also possible to comply with the greater specifications of future standards.

*The dynamometer is covered with metal for safety reasons.

dynamo

 Dynamometer controller

Rotation and torque can be controlled manually or through the use of a program.

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 Dynamometer control software

Emissions can be measured while observing the rotation, torque, voltage, and current of the test motor by using our proprietary software.

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 Anechoic chamber and test layout

At the e-OHTAMA Fujimatsu Laboratory, which has a demonstration anechoic chamber, absorbers are installed on five sides. In addition, the copper table-top (2,700 × 1,500 mm), on which the sample system is mounted, can be moved within the anechoic chamber if necessary.

■ Position of copper table-top A, B: For an EV motor test
■ Position of copper table-top C: For tests other than those for EV motors
 

Recommended specifications for remodeling/new construction Anechoic chamber: 7,000 × 7,000 × 4,300 mm (W × D × H) or more
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Optional Extras

The dynamometer chamber, amplifier chamber, and measurement chamber are optional equipment for both new and remodeled systems.

Dynamometer chamber (soundproof specification)

 Recommended size: 7,000 × 4,000 × 2,600 mm (W × H × D) or larger

Amplifier chamber

 Recommended size: Customer’s specifications

Measurement chamber (shield specifications)

 Recommended size: Customer’s specifications

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Specifications

 

Demonstration Anechoic Chamber

(Fujimatsu Laboratory)
Customization
Dynamometer Rotation speed(rpm) 
Torque(N・m) 
Capacity (kW)
20,000
350
190
Up to 25,000
Up to 800
Up to 380
Battery simulator Voltage(V)
Current(A) 
Capacity(kW)
DC 700
600
190
Up to DC 1,000
Up to 1,000
Up to 500

*We can also provide services such as selecting test equipment, training and dispatching test operators, and calibrating test equipment for you.

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Overview Flow Diagram

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*The construction work at the customer's site is expected to take a total of 5 months, with it taking 3 months to construct the anechoic chamber and 2 months for delivery and adjustment of the motor and inverter.
*From entering into a contract to delivery of the system usually takes about one year, which includes the time it takes to produce the motor and inverter, however, this timeframe does depend on the specifications.
*This flow chart shows the approximate process from beginning to end. The actual schedule will change depending on the specific conditions of the project.

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Inquiries

Sales:

Ohtama CO., LTD.

 

042-377-4311

EMC Testing & Technical Support

Tokai EMC Center, e-OHTAMA, LTD.

 

0120-978-728

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