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UM0969 Datasheet(PDF) 36 Page - STMicroelectronics

Part # UM0969
Description  3-phase motor control demonstration board featuring IGBT intelligent power module STGIPS10K60A
PDF  46 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM0969 Datasheet(HTML) 36 Page - STMicroelectronics

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Power losses and dissipation
UM0969
36/46
Doc ID 17665 Rev 2
Figure 15
shows how to calculate the relevant parameters (values reported are not referred
to the STGIPS10K60A).
Figure 15.
Static parameter calculations
Assuming that the switching frequency is high, the output current of the PWM-inverter can
be assumed to be sinusoidal.
Equation 11
where
φ is the phase-angle difference between output voltage and current.
Using Equation 10, the conduction loss of one IGBT and diode can be obtained as follows:
Equation 12
Equation 13
where
ξ is the duty cycle in the given PWM control method:
AM07753v1
VFO
RD = ΔVF / ΔIF
ΔIF
ΔVF
VTO
RCE = ΔVCE / ΔIC
ΔIC
ΔVCE
)
cos(
I
i
peak
φ
−
θ
=



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