The MCP3909 / dsPIC33F 3-phase power meter reference design has an accuracy class of 0.2S
The power meter reference design options energetic power pulse output, energetic energy, RMS present and voltage.
Power meters are important for detecting the utilization of energy and test the standard of incoming energy. The newer meters not solely measure the consumed energy but in addition numerous different parameters similar to frequency, RMS present, RMS voltage, and so on. So, if you wish to design your individual energy meter, then the 3-phase power meter reference design from Microchip will simplify your job.
The MCP3909 / dsPIC33F is a reference design for a 3-Part Power Meter which relies on Microchip’s 16-bit dsPIC33F Microcontroller Unit (MCU). The reference design is able to offering correct measurements in a 220V, 5(10)A system. The design incorporates the MCP3909 16-bit ADCs for exact analog conversion, whereas the calculations are carried out by a PIC18F2520 Flash MCU. The reference design consists of the PIC18F4550 USB Interface Module, enabling meter analysis and calibration utilizing the “3-Phase Energy Meter Software” on Home windows XP or Home windows 2000. The module additionally options an LCD for extra power meter firmware design and analysis.
The reference design provides exact measurements and versatile output portions, making it appropriate for numerous meter designs, from fundamental power meters to these requiring complete harmonic evaluation. The power meter reference design can precisely measure energetic power pulse output, energetic energy, RMS present and voltage, and over 100 serially accessible output registers. Moreover, it may possibly allow you to measure voltage sag detection, and exact energy calculations. The reference provides a strong platform for growing power meters that meet stringent accuracy necessities. The combination of the dsPIC33F’s DSP engine and quasi-synchronous sampling algorithm leads to price financial savings and simplified meter design.
The MCP3909 3-Part power meter reference design provides a spread of key options and benefits. It makes use of flash-based calculations for environment friendly power measurement, using huge dynamic vary ADCs that guarantee correct analog conversion with 128 samples per line cycle. The meter provides calibration and correction registers for exact fine-tuning and person configurability. With its command-driven operation and mode registers, customers can customise options like positive-only power accumulation and no-load threshold mode. Moreover, the design consists of the PIC18F4550 USB Interface Module for handy meter analysis and calibration utilizing devoted software program, together with an LCD for firmware design and analysis functions. Total, this reference design supplies a complete and user-friendly resolution for strong 3-phase power metering purposes.
Key Options and Benefits of MCP3909 / dsPIC33F 3-Part Power Meter Reference Design
- DSP Engine and Fourier Transforms: The design harnesses the dsPIC33F’s DSP engine, performing all calculations within the frequency area utilizing direct Fourier transforms (DFT). This enables for correct harmonic evaluation and a variety of output portions for various meter purposes.
- Quasi-Synchronous Sampling Algorithm: The dsPIC firmware implements a quasi-synchronous sampling algorithm, eliminating the necessity for exterior zero-crossing detection and PLL circuitry. This reduces prices and complexity by synchronizing ADC samples to the road frequency by software-based frequency measurement and correction.
- Excessive Accuracy and Efficiency: The meter design achieves an accuracy class of 0.2S, assembly stringent measurement necessities. It helps a variety of parameters, together with energetic energy, reactive energy, energy issue, frequency, and harmonic element measurements for each voltage and present inputs.
- Versatile Meter Configuration: The design accommodates a 3-phase 4-wire system, with voltage inputs accessible for each 220/380V and 57.7/100V configurations. The ADC sampling price is adjustable, offering flexibility for various sampling necessities.
- Pulse Outputs and Creeping Prevention: The meter consists of two pulse outputs for complete part energetic energy and reactive energy. It options an anti-creeping design to make sure correct measurement even at very low currents (<0.0008 IB). The heartbeat fixed is about at 3200 Imp/kWh.
This reference design has been examined by Microchip. It comes with required design assets similar to pattern code, schematics, BoM, and so on. Yow will discover further information in regards to the reference design on the corporate’s web site. To learn extra about this reference design click on here.
