Designing an instrumentation system for high current measurement requires careful consideration of the trade-offs associated with each type of sensing device. The purpose of this application note is to help engineers understand the sensing choices available and the corresponding trade-offs with each technology.
There are a variety of current sensing technologies that can monitor the status of an HEV or EV battery. The solution varies with the voltage and capacity of the battery. As shown in Figure 1, there are two main locations where you can measure current: top of stack (high-side sensing) and bottom of stack (low-side sensing). Figure 1.
Current and Voltage measurement modules from tables 1 and 2 respectively are synchronized when installed together in either a CompactDAQ or CompactRIO chassis. Channel synchronization is needed for more accurate phase and power measurements. Table 1: NI has a variety of C Series modules for current measurement.
For high precision current measurement and high DC current measurement, indirect methods often offer better performance and safety. This application note focuses on indirect technologies as they apply to the measurement of electrical power.
Our standardized photovoltaic container and energy storage products are engineered for reliability, safety, and easy deployment. All systems include comprehensive monitoring and control systems with remote management capabilities.
The Lab Mate high voltage power supply has an integrated current sensor, but it is also possible to measure low current values externally, as knowing the actual current flow through the load …
This paper is meant to be a comprehensive how to guide to help measure voltage, measure current, and measure power with computer based instrumentation. The following …
This paper is meant to be a comprehensive how to guide to help measure voltage, measure current, and measure power with …
Current sensors in high‐voltage grids are required to accommodate harsh environments and provide accurate measurements of several kiloamperes.
The measurement of currents and voltages becomes particularly interesting as soon as requirements such as accuracy, …
There are a variety of current sensing technologies that can monitor the status of an HEV or EV battery. The solution varies with the voltage and capacity of the battery. As …
Current sensors in high‐voltage grids are required to accommodate harsh environments and provide accurate measurements …
Measure current for BMU battery management Measure voltage to detect troubles in high voltage power contactor, such as welding Measure temperature for protecting the unit …
The Lab Mate high voltage power supply has an integrated current sensor, but it is also possible to measure low current values externally, as …
Introduction Designing an instrumentation system for high current measurement requires careful consideration of the trade-offs associated with each type of sensing device. The purpose of …
The measurement of currents and voltages becomes particularly interesting as soon as requirements such as accuracy, synchronicity or high voltage are added. With the …
A challenge associated with the high-side measurement location is that the amplifier must interface with large input voltage rails, such as high-voltage batteries. A typical …
The BJB board features two of our latest MC33772C ICs redundantly measuring battery pack current and several high voltages. The BJB also performs Coulomb Counting …
The battery cabinet can not only measure, use the three-phase current, voltage, power, but also monitor the current, voltage, power factor of the multiple branches.
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