Open search
Advertisement

Measuring modules

Current, voltage, and power measurement in EVs

CSM (Germany) introduced the HV BM Split modules for electric and hybrid vehicles where confined installation space is available. Acquired data is output via CAN.

HV BM Split modules: HV SBM_I open for measurements in busbars, HV SBM for measurements in HV power cables, and HV SAM 1.1 (from left to right) (Source: CSM)

The high-voltage breakout module (HV BM) Split system provides frequency measurement of current, voltage, and power in the high-voltage (HV) power cables and busbars. The HV SBM modules use the technology of the company’s larger CSM HV Breakout modules. The sensors in the modules are connected to the HV SAM (Split Acquisition module) measurement module via shielded, HV-safe cables. This allows for distributed installation in test vehicles, even between vehicle components, in cable ducts, and inside components such as e-axles or HV batteries.

Current and voltage measurement with HV BM Split modules between vehicle components: HV SAM 1.1 with connected HV SBM_I and HV SBM_U (from left to right) (Source: CSM)

The current sensors measure currents via customer-selected shunt modules (from ±10 A to ±2000 A) and are equipped with a sensor and memory for automatic online temperature compensation. The HV tap is also located in the module. The HV SBM_I current sensors are available for connection to the HV cable via cable glands and ring terminals as well as with Amphenol PL300/PL500 connector system. An open, encapsulated shunt module without housing for direct installation (e.g. in busbars) is also offered. The voltage is tapped via HV SBM variants, which can also be connected via ring terminals, PL300/PL500 connector system, or via a HV-safe sensor cable. The modules measure voltages up to ±1000 V, with the measuring range dimensioned up to ±2000 V. The encapsulated module variants are provided in robust housings, which ensure HV safety for components and users according to EN 61010:1-2010.

The HV SAM 1.1 acquisition module for single-phase measurements acquires the current and voltage data of the connected HV SBM modules and transmits the data via CAN or Ethercat interfaces. Optionally, the acquisition module also calculates the RMS (root mean square) values of current and voltage, active, apparent, and reactive power as well as the phase angle and outputs these values via CAN. For more comprehensive tests and the calculation of additional values in real time, the modules are combinable with other components from the Vector CSM E-Mobility measurement system.

of

Publish date
2022-03-14
Company

CMS

Breadcrumb


Publish date
2022-03-14
Company

CMS

Breadcrumb
Advertisement
Trafag DIS - Dewit Industrial Sensors