Testing of electric motors

With the electric motor roller dynamometer maps can be drawn of the electric machine efficiency, i.e. charts of the electric motor efficiency as a function of the speed and load (torque).

Testing capabilities

Mechanical
parameters of electric motors which we can test:

  • torque meter No. 1:
    • maximum torque 100 Nm,
    • maximum speed 12,000 rpm,
    • maximum mechanical power 125.67 kW;
  • torque meter No. 2:
    • maximum torque 500 Nm,
    • maximum speed 7,000 rpm,
    • maximum mechanical power 366.5 kW;
  • future torque meter:
    • maximum 1,000 Nm,
    • maximum speed 7,000 rpm,
    • maximum mechanical power 650 kW;
  • approximate maximum motor dimensions: a cylinder of 52 cm in length and 32 cm in diameter (it is possible to modify motor mounts and frames for larger motors).

Testing of electric motors – parameters of
L-ILOT inverters

Electrical
parameters of electric motors that we can handle with our inverters:

  • Inverter No. 1:
    • rated current 200 A,
    • peak current 400 A (60 sec.),
    • maximum supply voltage 700 V DC;
  • Inverter No. 2:
    • rated current 700 A,
    • peak current 800 A (60 sec.),
    • maximum supply voltage 450 V DC.

Electric motors tests – stand

The stand
is equipped with a battery simulator with the following main parameters:

  • simulator power supply 3×400 V AC,
  • continuous power 80 kW,
  • instantaneous power 120 kW (60 sec.),
  • adjustable output voltage 24-800 V DC,
  • rated current +/- (bi-directional) 267 A,
  • peak current +/- (bi-directional) 400 A,
  • the ability to quickly prototype the required energy storage capacity and conduct long-term tests with DC voltage.

Liquid cooling of motors/inverters

  • water cooler No. 1 – maximum heat capacity 5 kW;
  • water cooler No. 2 – maximum heat capacity 10 kW.

Testing of electric motors – possibility to conduct tests with the customer’s inverters:

  • the electric power of a single inverter powered directly from the DC bus in the configuration of electric motor + generator as a load must not exceed 380 kW;
  • the electric power of a single inverter supplied directly from the 3×400 V AC network with the configuration of an electric motor + generator as a load must not exceed 650 kW.