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 answer for growing 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 charge. 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 functions, together with electrical energy meters, main home equipment, small residence home equipment, warmth pumps, and lighting programs in single-phase configurations.
As industries transition to wash, net-zero electrical energy programs, this reference design helps engineers create sensible and versatile grids that empower shoppers to handle their vitality utilization extra successfully. By using this design, engineers can develop programs that permit shoppers to shift electrical energy consumption to cheaper, off-peak intervals, resembling heating HVAC warmth pumps throughout low-cost electrical energy hours. This contributes to lowered vitality prices and extra environment friendly vitality use in properties and small companies.
This electrical energy meter offers a number of key advantages, resembling detecting electrical energy utilization, calculating the ability consumption of finish tools, and displaying this knowledge for shoppers. The built-in real-time clock (RTC) perform permits the meter to mechanically regulate the heating or charging of kit through the least expensive electrical energy intervals. It additionally capabilities as an influence monitor, alerting shoppers 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 tip tools’s necessities. The design incorporates an remoted single-phase setup utilizing the AMC130M02 ADC, offering energy and knowledge isolation. It meets stringent accuracy necessities, fulfills minimal pattern charge wants with out compromising efficiency, and provides flexibility in deciding on the host MCU. This flexibility consists of selecting based mostly on processing capabilities, RAM, flash capability, and communication modules resembling SPI, UART, I2C, RTC, and CRC.
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 way 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 section 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 machine by selecting appropriate voltage divider resistors. This strategy minimizes the voltage-to-current crosstalk, bettering metrology accuracy whereas barely decreasing voltage accuracy, which is much less important on this utility.
TI has examined this reference design. It comes with a invoice of supplies (BOM), schematics, meeting drawing, printed circuit board (PCB) structure, and extra. The corporate’s web site has extra knowledge concerning the reference design. To learn extra about this reference design, click on right here.
