BOLAB systems are designed for electrical testing of high-voltage components in electric vehicles and provide targeted test solutions according to standards such as LV 123, VW 80300, ISO 21498-2, MBN 11123 and PSA B217112. The main components include high-voltage power supplies, four-quadrant amplifier systems and artificial networks, all of which are part of the BOLAB product portfolio.

BOLAB high-voltage power supply solutions are available for 500 V, 1,000 V or 1,500 V, and provide power modules from 15 kW to 54 kW through a modular design. They can be used as standalone units or stacked in parallel for a total power of up to 540 kW, and support future module expansion. Third-party high-voltage power supplies such as EA, Delta Elektronika, Heinzinger, Gustav Klein and Regatron can also be integrated into the system. For voltage ripple immunity testing, the BOLAB four-quadrant amplifier system can serve as a ripple generator, handling sinusoidal waveforms, spikes and single pulses; the immunity of load-dump voltage can also be achieved in the same way. The rise and fall time of the high-voltage power supply is less than 200 μs, and that of the four-quadrant amplifier system is less than 15 μs; overshoot and undershoot rarely occur or do not occur.

In addition, BOLAB is equipped with artificial networks according to the main standards such as ISO 21498-2, VW 80300, LV 123 and MBN 11123: the required internal resistance is built in, the current range is from 60 A to over 1,000 A, and air or liquid cooling is used depending on the power level, with the specified tolerance meeting the standards. In many cases, a single artificial network is suitable for several standards, helping to keep the investment cost-effective.

Product Features

·Covers standards such as LV 123, VW 80303/80300, ISO 21498, MBN 11123, BMW GS 95023, PSA B217110/12, Nissan 28400 NDS 91 and Renault 36-00-811, as well as customer-specific requirements.

·High-voltage power supply: 500 V / 1,000 V / 1,500 V, power modules from 15 kW to 54 kW available, total parallel power up to 540 kW, supports integration of third-party power supplies.

·Four-quadrant amplifier system: modular design, supports parallel expansion, can handle sinusoidal waveforms, spikes and single pulses, rise/fall time less than 15 μs; high-voltage power supply rise/fall time less than 200 μs, overshoot and undershoot rarely occur or do not occur.

·Artificial network (AN-Series): current from 60 A to over 1,000 A, internal resistance built in, air or water cooling available, a single device contains up to 8 impedance networks (8-in-1), voltage 1,000 V, Cx capacitance 700 μF or 10 mF (200/350 A RMS) available.

·Supports development testing and product validation testing: voltage ripple generation, voltage slope generation, voltage ripple immunity testing and high-voltage component life testing.

·Certified by DAkkS, the national accreditation body of the Federal Republic of Germany.

·Multiple independent test systems can be flexibly combined and merged for use when higher power is required by the DUT.

Main Products / Sub-products

BOLAB High-Voltage Power Supply

High-voltage power supplies of 500 V, 1,000 V or 1,500 V, with modular power units from 15 kW to 54 kW, usable as standalone units or stacked in parallel up to 540 kW, supporting future module expansion; rise/fall time less than 200 μs; third-party high-voltage power supplies such as EA, Delta Elektronika, Heinzinger, Gustav Klein and Regatron can be integrated.

BOLAB Four-Quadrant Amplifier System (Ripple Generator)

Used for voltage ripple immunity testing, it can handle sinusoidal waveforms, spikes and single pulses, and performs load-dump voltage immunity testing. Connected in series with the high-voltage power supply (including third-party units), it requires minimal hardware setup; ripple testing and load-dump testing share the same setup, and full-frequency scanning (including the lowest frequency or DC) requires no change to the system setup. The modular design supports parallel operation and future expansion, with time characteristics less than 15 μs.

High-Voltage Artificial Network (AN-Series)

According to VW 80300, AN-VW-A/B/C/ABC (50/100/200 mΩ, 60 A to 1,000 A) are provided; according to ISO 21498, AN-ISO-A/B/Z/C/ABC/ABCZ (2x10 mΩ to 2x100 mΩ, 60 A to 1,000 A) are provided, and composite models compliant with both ISO 21498 and VW 80300 (60 A to 400 A) are also offered. Optional Cx capacitance 700 μF or 10 mF (200 A RMS / 350 A RMS), with ripple generator interface, air or water cooling.

Voltage Ripple and Load-Dump Test System

An easy-to-use solution with the high-voltage DC power supply connected in series with the BOLAB four-quadrant amplifier, avoiding the limitations of the coupling transformer (CDN) approach, such as restricted speed and amplitude under load, low-frequency saturation, and the ability to couple only sinusoidal interference. For example, when the four-quadrant amplifier system provides 1,000 A RMS, it can generate ripple current exceeding 500 A pk; the maximum ripple current is jointly determined by the DC current and the AC current.

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