NHR-4800

KEY FEATURES:

• Fully integrated battery cycler: built-in isolation contactor relays, pre-charge circuit, reverse polarity checker
• Voltage models from 80VDC
• Modular and scalable power (Parallel up to 165kW)
• High power density in 4U chassis
• High Performance Source and Regenerative Load
• Regenerative power > 90% (Typical)
• SiC-based technology
• Fast transient speeds: Slew Rate < 1.5mS
• Modes: Charge/Discharge, Load, and Battery Emulation
• Optimize battery connections to minimize hazards
  • Low output capacitance relay isolated from UUT
  • Automatic soft-start re-charge function - Inrush Limiting
• Power Hardware-in-the-Loop (PHIL) Capability
• Air-cooled (no liquid cooling) provides simplified maintenance
• Advanced digital measurements
• Control options: touch panel and SCPI

High Density, Small Footprint, Fully Integrated Battery Cycler and Emulator

The NHR 4800 is a highly versatile and compact battery cycler capable of delivering high-power performance in a 4U chassis. The multi-functional battery cycler can also serve as a DC source, DC load, battery emulator, and amplifier for power-level hardware-in-the-loop (PHIL) testing. The NHR 4800 delivers up to 80VDC and 400A in a single unit while delivering scalable power ranging from 16.5kW up to 165kW. The fully integrated battery cycler includes isolation contactor relays, pre-charge circuitry, and a reverse polarity checker. In addition to battery cycling (sourcing and loading), the 4800 includes a wide range of additional operating modes including a built-in battery cycling profile controller, Arbitrary Profiles (XY and Macros), Sinusoidal on DC, Maximum Power Point Tracking (MPPT) and more. The battery emulation mode allows for accurate emulation of batteries or other bi-directional DC busses for test applications that use batteries such as powertrain and propulsion, EV fast charging, and more. The PHIL feature provides additional testing capability that is especially required in research applications. The versatile system with integrated safety features can replace multiple instruments in research, validation, and production environments. The NHR 4800 can be operated from an integrated touch panel or using SCPI commands in LabVIEW and Python.

An Auto-Ranging Operating Envelope that Delivers

The 4800 provides a very wide operating envelope with higher current and power capability to meet your testing needs. Unlike traditional supplies which have a maximum power at only one voltage/current, the 4800 output automatically adjusts providing more current at lower voltages resulting in a much wider operating envelope with a constant power curve. For example, the 80V model provides up to 400A and 16.5kW of power (Figure 1) far exceeding the power capabilities of competitive auto-ranging models.