AVL DynoPerform / 98 SIMULATION SOLUTIONS TEST SYSTEM SOLUTIONS Electrification Battery Test Systems E-Motor Test Systems Power Electronics Test Systems Component Test Systems MBD on the virtual testbed Engine Test Systems End of Line Test Systems Real Life Test Systems Driveline Test Systems Fuel and Lube Test Systems Emission Test Systems and Certification Vehicle Test Systems Racing Test Systems TESTING EQUIPMENT Dynamometers and Actuators Vehicle Testbeds Test Cell Mechanics and Control Rooms Media Conditioning Consumption Measurement Injection Testing Combustion Measurement Emission Analysis and Measurement In Vehicle Measurement TESTING EQUIPMENT SIMULATION TOOLS TESTING TOOLS CUSTOMER SERVICES Eddy current dynamometers in the AVL DynoPerform series are equipped with drum rotors. An adjustment of the air gap is not necessary. A DC current flows through the excitation coil. This creates a variable magnetic field that is dependent on the excitation current. The magnetic field of the rotating rotor creates eddy currents at the surface of the cooling chambers. This converts the mechanical energy of the engine into thermal energy. The energy is absorbed by the cooling water which can be retroactively cooled via a cooling tower, as it is the case for the cooling water for the combustion engine. TORQUE MEASUREMENT The eddy current dynamometer is a cradled dyno. The reaction force of the brake torque is measured with a strain gauge-based load cell. The measuring accuracy is influenced by the linearity of the load cell and the hysteresis of the dyno. The torque measuring system is calibrated by load beams and dead weights. The measuring error of the load cell can be compensated by the measuring amplifier. APPLICATIONS Cost-effective dynamometer for tests in R&D, quality control and endurance • Steady-state and transient applications • R&D for engines and components • Tests for fuel and lubrication oil BENEFITS AT A GLANCE • Excellent full-range torque and speed control stability • No axial forces on the shaft bearings due to drum rotor design • No air gap adjustment required • Very fast loading and unloading thanks to an IGBT full bridge power unit with a 4-quadrant PWM controller (substantially faster than a thyristor bridge power unit) • High permissible coupling weights LOAD UNIT FOR ENGINE TEST CELLS Using the power unit LSE 410 for eddy current dynamometers, very quick load changes are achieved due to the modern IGBT technology with PWM control
Solutionskatalog2016_EN
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