Power measurements Test

Table of Contents

• Files and directory structure
• Supported Combinations
• Steps to Run the Example
  • Sample Output

This example demonstrates capability of power measurements library. In this ramp generator is used to create ramp signal and with sine function, a sine wave of 50Hz frequency is generated. This genrated sine wave with amplitude multiplication[10] provided as one of input (v) and same sine wave with 45deg phase shift and another amplitude multiplication[5] provided as another input (i) for power measurement library. In this example input voltage rms, input current rms and power factor are calculated and printed on console using power measurements library.

Files and directory structure

Folder/Files	Description
power_measurements_main.c	Main function for power measurements library testing
power_meas_sine_analyzer.h	power measurement library header file
rampgen.h	rampgen library header file
powermeas.syscfg	DAC configuration as per test usage

Supported Combinations

Parameter	Value
CPU + OS	r5fss0-0 nortos
	r5fss0-0 freertos
Toolchain	ti-arm-clang
Boards	am263x-cc
Example folder	examples/power_measurements

Steps to Run the Example

• When using CCS projects to build, import the CCS project for the required combination and build it using the CCS project menu (see Using SDK with CCS Projects ).
• When using makefiles to build, note the required combination and build using make command (see Using SDK with Makefiles ).
• Launch a CCS debug session and run the executable, see CCS Launch, Load and Run

Sample Output

Shown below is a sample output when the application is run :

Sine input(sinwt) generated provided is shown in figure:

Sine wave without amplitude observed from logic analyzer

Power factor need to be 0.707 (cos45deg) as 45deg phase shift is introduced while providing voltage(10*sinwt) and current(5*sin(wt+45deg)) waveform.

- Input current rms, Input voltage rms, power factor
- Current_rms = 3.535537 Voltage_rms = 7.070998 Power factor = 0.707088