71M6513谐波性能(71M6513 Harmonic Performance)

71M6513 Harmonic Performance 
 
Teridian Semiconductor Corporation has developed a custom compute engine firmware to support the energy metering in the presence of harmonics.   The compute engine firmware was developed to provide the following capabilities:
 
1.  Measurement of Wh information with harmonics and a separate Wh measurement register for fundamental component.  These two sets of registers are available simultaneously for meter harmonic analysis.
 
•  The existing CE outputs, WSUM_X (0x42), W0SUM_X(0x43), WSUM1_X(0x44), and WSUM2_X(0x45) will be broadband Wh measurement registers
 
•  Four new output registers, WSUM_F(0x5e), W0SUM_F(0x5b),W1SUM_F(0x5c) and W2SUM_F(0x5d), will be fundamental   Wh output only.   
 
2.  VSQh, ISQh, and VARh  measurement will be selectable between either broadband or fundamental only.  
 
•  When NB_SELECT >=0, VRMS, IRMS, and VARh will be measurements of fundamental component only.  That is the output registers V0SQH_X(0x4e), V1SQH_X(0x4f), V2SQH_X(0x50), I0SQH_X(0x4a), I1SQH_X(0x4b), I2SQH_X(0x4c), INSQH_X(0x4d), VARSUM_X(0x46), VAR0SUM_X(0x47), VAR1SUM_X(0x48), VAR2SUM_X(0x49) all contain fundamental measurements only.
 
•  When NB_SELECT < 0. VRMS, IRMS, and VARh will be broadband (inclusive harmonics).  That is the  output registers V0SQH_X(0x4e), V1SQH_X(0x4f), V2SQH_X(0x50), I0SQH_X(0x4a), I1SQH_X(0x4b), I2SQH_X(0x4c), INSQH_X(0x4d), VARSUM_X(0x46), VAR0SUM_X(0x47), VAR1SUM_X(0x48), VAR2SUM_X(0x49) all contain fundamental and harmonic components in their measurements.
 
3.  Only 3 phase 4 wire wye ((Va* Ia  + Vb * Ib + Vc * Ic) or 3phase 3 wire (Va* Ia  +  Vb * Ib) configurations are supported.