50.3. QEIV2 Sin Mode TOGI

50.3.1. Overview

Qeiv2 Sin TOGI Mode project demonstrates the configuration of the single Sin mode TOGI function. In single Sin mode, when TOGI is enabled and w_param is set, QEIV2 will calculate another set of orthogonal signals and use the orthogonal sine and cosine signals to calculate the phase position, thereby improving the accuracy of phase position calculation.

This application can be used for phase calculation during grid connection, such as solar power generation. To integrate the generated electricity into the grid, it is necessary to calculate the phase of the grid, so that the phase of the electricity to be connected to the grid is consistent with the phase of the grid.

50.3.2. Configurations

  • Use a signal generator to generate a set of Sin sine waves with a frequency of 50Hz, peak to peak value of 2V, and center offset of 1.65V.

  • Connect sine signal to QEIV2 Sin pin, as detailed in the development board documentationQEIV2 Sin/Cos Pin.

50.3.3. Running the Demo

  • Sin sine and cosine wave injection, simulating single-phase signals in the power grid.

  • After powering on, open the serial port terminal and print 2000 data messages. ADC is the sine waveform, pos and ang are the phases, and 0-360 degrees correspond to 0x0-0xFFFFFFFF.

adc:0x7b96, pos:0x205aff, ang:0x205b00, z:0x1
adc:0x7c42, pos:0x91d5ff, ang:0x91d600, z:0x1
adc:0x7c42, pos:0x91d5ff, ang:0x91d600, z:0x1
adc:0x7d46, pos:0x1038fff, ang:0x1039000, z:0x1
adc:0x7d46, pos:0x1038fff, ang:0x1039000, z:0x1
adc:0x7e14, pos:0x17544ff, ang:0x1754500, z:0x1
adc:0x7e6c, pos:0x1e677ff, ang:0x1e67800, z:0x1
adc:0x7e6c, pos:0x1e677ff, ang:0x1e67800, z:0x1
adc:0x7f43, pos:0x257b1ff, ang:0x257b200, z:0x1
adc:0x80c1, pos:0x2c9a7ff, ang:0x2c9a800, z:0x1
adc:0x80c1, pos:0x2c9a7ff, ang:0x2c9a800, z:0x1
adc:0x8129, pos:0x33b29ff, ang:0x33b2a00, z:0x1
adc:0x8129, pos:0x33b29ff, ang:0x33b2a00, z:0x1
adc:0x8273, pos:0x3ad2aff, ang:0x3ad2b00, z:0x1
adc:0x82c7, pos:0x41ea4ff, ang:0x41ea500, z:0x1
adc:0x82c7, pos:0x41ea4ff, ang:0x41ea500, z:0x1
adc:0x8362, pos:0x48fe5ff, ang:0x48fe600, z:0x1
adc:0x845f, pos:0x50150ff, ang:0x5015100, z:0x1
adc:0x845f, pos:0x50150ff, ang:0x5015100, z:0x1
adc:0x8494, pos:0x5721dff, ang:0x5721e00, z:0x1
adc:0x8494, pos:0x5721dff, ang:0x5721e00, z:0x1
adc:0x86fa, pos:0x5e475ff, ang:0x5e47600, z:0x1
adc:0x8690, pos:0x65595ff, ang:0x6559600, z:0x1
adc:0x8690, pos:0x65595ff, ang:0x6559600, z:0x1
adc:0x8883, pos:0x6c7c0ff, ang:0x6c7c100, z:0x1
adc:0x8883, pos:0x6c7c0ff, ang:0x6c7c100, z:0x1
adc:0x87ba, pos:0x73863ff, ang:0x7386400, z:0x1
adc:0x89c7, pos:0x7aa29ff, ang:0x7aa2a00, z:0x1
adc:0x89c7, pos:0x7aa29ff, ang:0x7aa2a00, z:0x1
adc:0x8a08, pos:0x81b60ff, ang:0x81b6100, z:0x1
adc:0x8b1c, pos:0x88cceff, ang:0x88ccf00, z:0x1
adc:0x8b1c, pos:0x88cceff, ang:0x88ccf00, z:0x1
adc:0x8c30, pos:0x8fe6bff, ang:0x8fe6c00, z:0x1

  • After the above printing is completed, the following information will be printed periodically, which is interrupted when the phase is at 0 degrees.

position: 0x2c29ff
ang: 0x2c2a00
z: 0x1bf
position: 0x229dff
ang: 0x229e00
z: 0x1c0
position: 0x1c2dff
ang: 0x1c2e00
z: 0x1c1
position: 0xebdff
ang: 0xebe00
z: 0x1c2
position: 0x647ff
ang: 0x64800
z: 0x1c3
position: 0x6c7fff
ang: 0x6c8000
z: 0x1c4
position: 0x63cbff
ang: 0x63cc00
z: 0x1c5
position: 0x5e46ff
ang: 0x5e4700
z: 0x1c6