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External Fixed E-axes EMC Test Bench

External fixed e-axes EMC test benches enable testing of the e-axes the anechoic chamber, and have excellent EMC performance.

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Product Description

Model Selection

External fixed e- axes EMC test benches have two excellent dynamometers outside the anechoic chamber, and connect to the test object by the EMC drive shaft.

Type	nmax(rpm)	Trated(N.m)	Prated(kW)	nrtated(rpm)	n2(rpm)	Pmax(kW)@ nmax	Cooling
EMD-B300-12-2	12000	1000	300	2865	12000	300	Air
EMD-B350-10-2	10000	2500	350	1337	10000	250	Air
EMD-B350-08-2	8000	3000	350	1114	7000	300	Air
EMD-B350-07-2	7000	2000	350	1671	6000	300	Air
EMD-E450-06-2	6000	4000	450	1074	3500	300	Air
EMD-E500-06-2	6000	6000	500	795.8	3500	400	Air
EMD-E500-03-2	3000	5000	500	670	2000	400	Air

Note.

JKT can provide customized EMC test benches to meet special requirements. In order to test e-axle and high speed e-motor , JKT’s EMC e-axle test benches could equip a special gearbox connect to the EMC drive shaft one side in the anechoic chamber. The special gearbox has one direct output shaft and another high speed output shaft.

Based on the e-axle dynamometer, JKT designs a set of movable EMC dynamometer for hybrid and extended-range powertrains EMC test. The movable EMC dynamometer can simulate engine output to conduct comprehensive testing on hybrid and extended-range powertrain assemblies.

Typical Application Project for e-axes test

Test benches test e-motor and e-axes of the electric vehicles (EVs).

Main test contents:

Conducted Emission test
Radiated Emission test
Standard: GB/T 18655 & CISPR25

Example top view

Basic configurations:

Dynamometer & Mechanical System: Two high-dynamic asynchronous or synchronous motors are selected as the dynamometer, equipped with two EMC drive shafts system and precision, reliable mechanical components. Dynamometers installed outside the anechoic chamber.

Frequency Converter: Four-quadrant frequency converters are adopted for dynamic or steady-state control of the dynamometers. It enables control of rotational speed, torque, allowing the dynamometer to operate in either motoring or generating mode.

Battery Simulator or Bidirectional DC Power Supply: Simulates an on-board battery pack to supply power to the inverter and the motor. The DC power connects to HV filter outside the anechoic chamber, and then connect to HV AN by HV lines.

MCU Power Supply: Provides a low-voltage power supply for the motor controller. Customer can also select the battery which put on the test table.

Test Object Cooling System: Supplies cooling medium for the tested E-axle and E-drive. An oil or water-cooling system is available for certain oil-cooled or water-cooled test pieces. Parameters including temperature, pressure and flow rate of the cooling system are fully adjustable. The water-cooling system can also use ethylene glycol as the cooling medium. The cooling system is connected to the fluid waveguides mounted on the wall of the anechoic chamber.

Automated Measurement & Control System: Conducts overall control and condition monitoring of the entire motor test bench.

350kW 7000rpm 3000N.m EMC Test bench for e-motor and e-axes

External Fixed E-axes EMC Test Bench