One-Section Shunt Energy Meter Reference Design

Design single-phase vitality meters with this reference design—obtain precision, flexibility, and effectivity for contemporary vitality options.

TIDA-010960 is a reference design from Texas Devices (TI) that gives design engineers with a complete resolution for creating a single-phase vitality meter utilizing remoted multichannel ADCs. This design makes use of the AMC130M02 remoted ADC to pattern a shunt present sensor, providing 0.5% accuracy throughout a 50mA–15A vary with a 4kHz sampling fee. The metrology parameters are calculated by the TI Arm Cortex-M0+ microcontroller, enabling exact vitality measurement. The reference design is appropriate for a spread of purposes, together with electrical energy meters, main home equipment, small dwelling home equipment, warmth pumps, and lighting techniques in single-phase configurations.

As industries transition to wash, net-zero electrical energy techniques, this reference design helps engineers create sensible and versatile grids that empower customers to handle their vitality utilization extra successfully. By using this design, engineers can develop techniques that permit customers to shift electrical energy consumption to cheaper, off-peak durations, reminiscent of heating HVAC warmth pumps throughout low-cost electrical energy hours. This contributes to lowered vitality prices and extra environment friendly vitality use in houses and small companies.

– Commercial –

This electrical energy meter offers a number of key advantages, reminiscent of detecting electrical energy utilization, calculating the facility consumption of finish tools, and displaying this information for customers. The built-in real-time clock (RTC) perform permits the meter to robotically regulate the heating or charging of kit through the least expensive electrical energy durations. It additionally capabilities as an influence monitor, alerting customers if the tools just isn’t functioning correctly.

Engineers working with this reference design can select between single-phase or multiphase configurations, relying on the top tools’s necessities. The design incorporates an remoted single-phase setup utilizing the AMC130M02 ADC, offering energy and information isolation. It meets stringent accuracy necessities, fulfills minimal pattern fee wants with out compromising efficiency, and presents flexibility in deciding on the host MCU. This flexibility contains selecting primarily based on processing capabilities, RAM, flash capability, and communication modules reminiscent of SPI, UART, I2C, RTC, and CRC.

– Commercial –

The reference design makes use of two channels of the remoted AMC130M02 ADC and the cost-effective MSPM0G1106 MCU, with one channel for present sensing by means of a shunt resistor and the opposite for voltage sensing. The firmware helps metrology calculations for single-phase vitality measurement, together with key parameters like part lively vitality, reactive vitality, obvious vitality, and different important energy measurements.

For voltage sensing, the design ensures that the Mains voltage is scaled appropriately to suit the enter vary of the AMC130M02 gadget by selecting appropriate voltage divider resistors. This method minimizes the voltage-to-current crosstalk, bettering metrology accuracy whereas barely lowering voltage accuracy, which is much less important on this software.

TI has examined this reference design. It comes with a invoice of supplies (BOM), schematics, meeting drawing, printed circuit board (PCB) format, and extra. The corporate’s web site has extra information concerning the reference design. To learn extra about this reference design, click on right here.