STEVAL-IPE009V1 STMicroelectronics, STEVAL-IPE009V1 Datasheet - Page 36

• Manufacturer Part Number: STEVAL-IPE009V1
• Description: BOARD EVAL ST72321BR9/STPM14
• Manufacturer: STMicroelectronics
• Type: Other Power Managementr

Specifications of STEVAL-IPE009V1

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: STPM14, ST72F321BR9T6
• Primary Attributes: 1-Ph 220 VAC, LCD Displays: No-Load, Reverse, Fraud, or Case Tampering
• Secondary Attributes: Up to 4 Tariff Rates, Data Accumulated for Meter Life, Time Stamp for: Tamper, Fraud, Power Failure
• Input Voltage: 220 V
• Product: Power Management Modules
• Silicon Manufacturer: ST Micro
• Silicon Core Number: ST72321BR9 And STPM14
• Features: Continuously Detects, Displays No-Load Condition, Reverse Direction, Fraud And Case Tamper Condition
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: STPM14, ST72321BR9
• Other names: 497-8434; STEVAL-IPE009V1

Energy calculation algorithm
36/46
Equation 16
has been then removed from the instantaneous power.
In the case of current sensors like "Rogowski coils", which provide the rate of the
instantaneous current signal, the initial voltage signal differentiation stage is switched off. In
this case the signals coming from the A/D conversion and their consequent integrations are:
Equation 17
v(t) = V
Equation 18
Equation 19
Equation 20
The signals process flow is the same as shown in the previous case, and even with the
formulas above, the result is the same.
The absence of any AC component allows a very fast calibration procedure. Averaging the
readings of several line periods is not needed. The active energy measurement is already
stable after one line cycle. Moreover the digital calibration allows saving time and space
compared to the hardware calibration made with resistor strings.
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Doc ID 13167 Rev 7
ϕ
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STPM11, STPM12, STPM13, STPM14