Artificial Network AN-Series

AN-Series is an Artificial Network that electrically recreates the vehicular power-net impedance for component tests of voltage class B (high voltage) components in laboratories and test benches. The AN-Series uses an analog system with a bandwidth covering up to 150 kHz. An artificial network like the AN-Series is crucial for the proper testing of all voltage class B components in both hybrid and electric vehicles. Generated DUT interferences like ripple, dynamics, spikes, and other higher frequency noise is correctly absorbed and reflected by the Artificial Network, recreating conditions similar to that in a vehicular high voltage power net. This allows for better testing of the component’s robustness and immunity to its generated noise. Testing with AN-Series artificial network would also bring efficiency and life-cycle tests closer to real-world results and in line with standards like the ISO 21498, LV 123, IEC 61851-23, VW80300, MBN 11123, and internal-norm requirements.

• In accordance with LV123, ISO 21498, MBN 11123, VW 80300, and IEC 61851-23.
• Customer-specific solutions according to in-house standards like the MBN 11123, GS 95023, VW 80303 or Impedances taken from vehicular measurements.
• Liquid-cooled for stabile resistance temperature and constant ohmic value.
• True continues current loading without derating, ideal for in-the-loop testing during the development stage of HV components.
• 2x tighter tolerance than required in ISO 21498. Accredited DAkkS calibration is available upon request.
• The modular and upgradable system grows with your testing needs.
• Self-monitoring, safe and reliable system

High Voltage System:

This product is a high voltage and high current system and should only be used and handled by qualified professionals in proper laboratory conditions.

Large internal Cx capacitance (greater than 6 mF):

This product contains large internal Cx capacitance connected between the high voltage lines. Even when DC power supply to the Artificial Network (AN) is turned off, the high voltage will linger for longer periods of time. Hence, before handling or starting any work on the high-voltage system and connected equipment, always test for the absence of voltage. Ensure that the high voltage lines are fully discharged (to below 10 V). Voltages above 10 V can lead to arc flashes when a short circuit between the high-voltage lines occurs.

Fused voltage outputs:

High voltage measurement points “DUT Voltage Reference” and “DC Power Supply Sense” are fused and may not be electrically connected to the high voltage lines when the fuses are blown. To ensure the test for the absence of voltage is valid, proceed first with a positive test or a connectivity test between “DUT Voltage Reference” and “DC Power Supply Sense”. After testing for the absence of voltage at the voltage measurement points “DUT Voltage Reference” and “DC Power Supply Sense”, testing for the absence of voltage directly at the high voltage busbar.

Internal Cy capacitance (equal or greater than 2 μF):

This product contains internal Cy capacitance between high voltage lines and ground. When connected to other devices the Cy capacitance may exceed safe values. Before begging to handle or starting any work on the high voltage system always test for the absence of voltage between high voltage lines and the ground.

Safety Note and Typical Application Setup

Emergency-Stop:

Before the use of this product or system, ensure that the product or system is connected to the laboratory Emergency-Stop. This product or system must be able to shut off or cut off the DC power supply and DUT in case of overheating or internal error.

Cooling:

For the Physical form B system or product, the correct temperature and flow rate of the liquid coolant must be present and running as soon as voltage is present on the high-voltage lines, otherwise, the internal components of the system may be damaged.

Typical Application setup:

Specification

Electrical Characteristics:

  
 
 DC Power Supply Requirements

The High Voltage DC Power Supply is connected to the AN-Series via the lower busbars labeled “DC Power Supply”.

Requirements of the DC Power Supply:

1. DC Power Supply Cx output capacitance connected between the high voltage lines shall not exceed 200 uF.
2. The current limit (CC) of the DC Power Supply shall be set to not more than the max continuous current of the AN-Series as written on page 6.

The following points are recommended for the DC Power Supply:

1. Shielded cables between the DC Power Supply and the AN with shielding connected on both ends.
2. Sense input of the DC Power Supply connected to the AN sense out.
3. Sense Response bandwidth of the DC Power Supply ≥ 1 kHz
4. DC Power Supply with Insulation monitoring.