 |
Moteur de recherche de fiches techniques de composants électroniques |
|
|
Moteur de recherche de fiches techniques de composants électroniques |
|
ADE9000ACPZ Fiches technique(PDF) 29 Page - Analog Devices |
|
|
|||||||||||||||||||||||||||||
ADE9000ACPZ Fiches technique(HTML) 29 Page - Analog Devices |
|
|
29 / 73 page  ADE9000 Data Sheet Rev. A | Page 28 of 72 Total and Fundamental RMS The ADE9000 offers total and fundamental current and voltage rms measurements on all phase channels. The datapath is shown in Figure 61. xV_PCF or xI_PCF VOLTAGE OR CURRENT CHANNEL WAVEFORM LPF2 x2 √ 215 xRMSOS xRMS 52702092 0 +0.064% –0.064% Figure 61. Filter-Based Total RMS The total rms calculations, one for each channel (AIRMS, BIRMS, CIRMS, NIRMS, AVRMS, BVRMS, and CVRMS), are updated every 8 kSPS. The fundamental rms calculations available in the AIFRMS, BIFRMS, CIFRMS, AVFRMS, BVFRMS, and CVFRMS registers are also updated every 8 kSPS. The fundamental rms is not available for the neutral channel. The xRMS and xFRMS value at full scale is 52,702,092 decimals. The total and fundamental rms measurements can be calibrated for gain and offset. Perform gain calibration on the respective current and voltage channel datapath. The following equations indicate how the offset calibration registers modify the result in corresponding rms registers: xRMOSOS xRMS xRMS 0 × + = 15 2 2 where xRMS0 is the initial xRMS register value before offset calibration. xFRMOSOS xFRMS xFRMS 0 × + = 15 2 2 The ADE9000 also calculates the rms of the sum of IA + IB + IC ± IN and stores the result in ISUMRMS. The ISUM_CFG bits in the CONFIG0 register configure the components included in summation. Total and Fundamental Active Power The ADE9000 offers total and fundamental active power measurements on all channels. To calculated the total active power for Phase A, see Figure 62. APGAIN AWATTOS AWATT LPF2 DISAPLPF AI_PCF AV_PCF ENERGY/ POWER/ CF ACCUMULATION Figure 62. Total Active Power, AWATT, Calculation for Phase A The active power calculations, one for each channel (AWATT, BWATT, and CWATT), are updated every 8 kSPS. The fundamental active power is also updated every 8 kSPS and is available in the AFWATT, BFWATT, and CFWATT registers. With full-scale inputs, the xWATT and xFWATT value is 20,694,066 decimals. Enable the LPF2 (DISAPLPF = 0) for normal operation. Disable LFP2 by setting DISAPLPF in the CONFIG0 register to obtain instantaneous total active power. DISAPLPF is zero at reset. The total and fundamental measurements can be calibrated for gain and offset. The following equations indicate how the gain and offset calibration registers modify the results in the corresponding power registers: xWATTOS xWATT xPGAIN xWATT 0 + + = 27 2 1 xFWATTOS xFWATT xPGAIN xFWATT 0 + + = 27 2 1 xPGAIN is a common gain to total and fundamental components of active, reactive, and apparent powers. Total and Fundamental Reactive Power The ADE9000 offers total and fundamental reactive power measurements on all channels. Figure 63 shows how to perform the total reactive power calculation. APGAIN AVAROS AVAR LPF2 DISRPLPF AI_PCF AV_PCF ENERGY/ POWER/ CF ACCUMULATION 90 DEGREE PHASE SHIFT π 2 Figure 63. Total Reactive Power, AVAR, Calculation The reactive power calculations, one for each channel (AVAR, BVAR, and CVAR) are updated every 8 kSPS. The fundamental reactive power is also updated every 8 kSPS and is available in the AFVAR, BFVAR, and CFVAR registers. With full-scale inputs, the xVAR and xFVAR value is 20,694,066. Enable the LPF2 (DISRPLPF = 0) for normal operation. Disable LFP2 by setting DISRPLPF in the CONFIG0 register to obtain instantaneous total reactive power. DISRPLPF is 0 at reset. The following equations indicate how the gain and offset calibration registers modify the result in the corresponding power registers: xVAROS xVAR xPGAIN xVAR 0 + + = 27 2 1 xFVAROS xFVAR xPGAIN xFVAR 0 + + = 27 2 1 |
|
Lien URL |
| ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Lien vers la fiche technique | Echange de liens | Fabricants All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
French ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
