Standards

Standards

Safety

How do our test systems deal with standards as a whole?

Do you have to deal with a range of standards in the automotive sector? So do we. We at AVL SET design our test systems accordingly.

Different standards focus on the safety and functionality of the drive inverter:

  • Functional safety (ISO 26262)
  • Signal and low voltage on-board network (LV 124, LV 148 and VDA 320 )
  • Test sequences for components in HV on-board network (LV 123) 
  • Test specification for components for electric drives (ISO 21498/21782, IEC 61377)

 

ISO 26262:

The drive inverter is a safety-relevant component in a vehicle. In the worst case, a fault can lead to damage or personal injury. Our AVL SET test solution offers you the possibility to inject fault behaviour into the unit-under-test in a targeted fashion, such as:

  • Interruption of the intermediate circuit
  • Short circuits and interruption of the motor phases
  • Influencing the rotor position signals
    • Short circuit
    • Interruption
    • Parameter changes, such as amplitude, phase, noise
  • Targeted changes of electrical machine parameters for sensitivity analysis
    • Variation of electrical characteristics
    • Variation of magnetic characteristics
    • Variation of mechanical characteristics
  • Influencing the temperature sensors
  • Interruption and targeted error in communication with the unit-under-test
LV 124 and LV 148:

The LV 124 and LV 148 standards describe requirements and tests for electronic components in the LV on-board network for use in vehicles, such as:

  • Behaviour during over- and under-voltage
  • Load shedding
  • Fast and slow changes in supply voltage
  • Reset behaviour
  • Reverse poling

AVL SET provides you with a modular set of test solutions to enable you to observe and select the supply for the unit-under-test in accordance with the standardized requirements.

LV123:

This standard ensures the electrical characteristics and the safety of components in HV on-board networks. The standard includes the following tests:

  • Interaction between LV and HV systems
  • Check the correct functioning for different voltage ranges and voltage ripple
  • Load shedding (for example HV battery ejection)
  • Dynamic change in system voltages
  • Active and passive discharging of intermediate circuits
  • HV voltage offset against reference potential
  • Overcurrent and overvoltage limits
  • Undervoltage limits
  • Test voltages

Our AVL SET test systems support the tests by using highly dynamic battery emulation, special ripple generators, and a module for the injection of fault behaviour.

ISO 21498 and ISO 21782:

These standards specify the measurement method for the characterization of inverters.

The following topics are addressed:

  • Operating points for
    • Efficiency measurement
    • Thermal validation

Our AVL SET test systems are equipped with the appropriate current and voltage sensors and a power measurement device. The PUMA automation system supports the execution, measurement and archiving of the tests. This system also offers the ability to configure test sequences to conduct tests according to the standards.