DSPIC33FJ128GP706A-E/MR Microchip Technology, DSPIC33FJ128GP706A-E/MR Datasheet - Page 91

• Manufacturer Part Number: DSPIC33FJ128GP706A-E/MR
• Description: 16 Bit MCU/DSP 40MIPS 128KB FLASH 64 QFN 9x9x0.9mm TUBE
• Manufacturer: Microchip Technology
• Series: dsPIC™ 33Fr

Specifications of DSPIC33FJ128GP706A-E/MR

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 40 MIPs
• Connectivity: CAN, I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: AC'97, Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 18x10b/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 64-VFQFN, Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

C.7
C.8
C.9
© 2009 Microchip Technology Inc.
MEASURING SECONDARY PARAMETERS
APPARENT POWER OF EACH PHASE AND TOTAL APPARENT POWER
POWER FACTOR OF EACH PHASE AND TOTAL POWER FACTOR
The methods of measuring parameters such as RMS values of voltage and current,
active power, reactive power and frequency have been discussed in previous sections.
These are primary parameters that need to be calculated from the original data. There
are some other parameters called secondary parameter, such as power factor of each
phase, total reactive power, total active power, total power factor, harmonic
components and cumulative energy. They are obtained indirectly from primary param-
eters.
The measurement of secondary parameters is discussed in this section.
C.7.0.1
For 3-phase 4-wire systems, 3-phase total active power and recative power are the
sum of power of each phase, respectively, which can be expressed as:
EQUATION C-54:
EQUATION C-55:
Apparent power is defined as:
EQUATION C-56:
Power factor is defined as the ratio of active power to apparent power. The definition
can be represented as shown in Equation C-57:
EQUATION C-57:
TOTAL ACTIVE POWER AND TOTAL REACTIVE POWER
Q
P
Power Calculation Theory
PF
=
S
=
=
Q
P
=
A
A
----------------------- -
+
+
Q
P
P
Q
2
2
B
+
P
B
+
+
+
p
Q
2
P
Q
2
C
C
DS51723A-page 91