Data acquisition T
he SIRIUSi-XHS-PWR product family is Dewesoft’s solution for safe high- power in-vehicle measurement of current, voltage, and power in e-mobility applications.
Hybrid ADC technology allows it to be used in early development applications, including transient and harmonic analysis, powertrain efficiency, and more. It can also be used at the validation stage, performing standardised driving cycles like WLTP in order to determine the driving range and full power analysis. Current measurement is performed by a patented DC-CT zero-flux transducer which is based on a Platiše Flux Sensor (PFS). This technology guarantees high-precision measurements of AC and DC currents (<0.1 per cent) with a high bandwidth (>500 kHz). DC-CT current transducer also provides extremely low- temperature drift, excellent linearity and overload capability. Measurements of battery DC and motor AC currents, including all higher- frequency signals can be performed easily. The first released product is SIRIUSi-XHS-PWR-
1xHV-1xDC-CT-1000A-UNI. This DAQ device is designed to measure voltages up to ±2,000 V (0.03 per cent accuracy) and currents up to ±2,000A with a maximum sampling rate of 15 MS/s. The unit is universal in terms of high-voltage harness connection allowing the usage of different cable and connector types.
Hybrid ADC technology enables high bandwidth and high dynamic measurements in one device. In high-bandwidth mode, both current and voltage are sampled at rates up to 15 MS/s with up to 5 MHz bandwidth. High dynamic alias-free mode with up to 2 MS/s sampling provides up to 140 dB dynamic range. The system is tested to the EN 61010-1 safety standard providing channel-to-channel and channel-to-ground isolation to CATII 1000 V. The IP65-rated chassis, having the power lines running through, operates between -20°C and 70°C, and withstands high shock and vibration. Internal temperature monitoring is also provided. Measured values can be transferred via Ethernet, XCP, OPC UA, and CAN. Data is synchronised with other data from CAN BUS, GPS and IMU data, video, and more. Synchronisation is achieved using the IEEE 1588v2 PTP timing protocol.
The scope of supply includes a SIRIUSi-XHS- PWR-1xHV-1xDC-CT-1000A-UNI device, a
SAFE MEASUREMENT FOR MORE EFFICIENT ELECTRIC VEHICLES
connection cable and a set of various mounting accessories for HV harnesses, all packed in a plastic case. Additionally to the SIRIUSi-XHS-PWR DAQ device, Dewesoft offers accessories that provide a simple connectivity solution. ETH-POWER-JUNCTION combines data and power lines for the single-cable connection to the SIRIUSi-XHS-PWR device. It is intended to be used with a single SIRIUSi-XHS-PWR unit. When using multiple SIRIUSi-XHS-PWR device, a
six-port GbE switch with a PTP synchronisation is your best choice. DS-6xLAN-L1B offers four downlink ports on the front panel and 2 uplink ports (RJ45 connectors) on the back panel. Each of the ports can handle traffic up to 1Gbps. Downlink ports use LEMO 1B series connectors and include passive PoE option providing the power supply to SIRIUSi-XHS-PWR units. The DS-6xLAN-RJ45 network switch is a variation which uses RJ45 connectors on the four front ports making it suitable for standard SIRIUS-XHS devices. For both DS-6xLAN switches Dewesoft has developed a DS-MOUNT6, thus providing a fully stackable solution.
CAN communication is also supported by the SIRIUSi-XHS-PWR. There is a waterproof D-SUB9 connector on the side. Usage of a special CAN-SYNC breakout adapter cable (D9fw-D9m-L00B4f-Xm-CAN-SYNC) allows CAN connection as well as synchronisation with the legacy devices using a standard IRIG-B-DC timecode. Vehicle electrification is the major trend for driving innovation in the automotive field. This requires the implementation of intelligent management and smart distribution of in-vehicle electric power. SIRIUSi-XHS- PWR measuring technology allows e-car engineers to more easily and accurately perform energy flow analysis, and therefore better optimise their designs.
Dewesoft
dewesoft.com
46
March 2023 Instrumentation Monthly
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