Power losses of the IGBTs' and FWDs
' used in the PCU account for about 20% of the total losses of an HV (Fig.
Powertrain: 3.5-liter V-6 with Lexus Hybrid Drive, electronically controlled continuously variable transmission , FWD
The method uses data collected from a falling weight deflectometer (FWD
), which imparts a dynamic load to the pavement surface that is similar to that of a single heavy moving wheel load.
Generally speaking though, the most used methods are the falling weight deflectometer (FWD
) and Dynaflect, while the development of the rolling dynamic deflectometer (RDD) also holds promise (Bay, Stokoe 1998).
The Power Card(P/C) is the resin-molded package including IGBT (Insulated Gate Bipolar Transistor), FWD
(Free Wheeling Diode), heat sink, and terminals.
The LTPP program developed documentation for procurement and evaluation of FWDs
. Copies of these documents are available from the LTPP Customer Support Service Center at firstname.lastname@example.org.
The report, FWD
Calibration Center and Operational Improvements: Redevelopment of the Calibration Protocol and Equipment (FHWA-HRT-07-040), provides information on how the new FWD
calibration procedure was developed and how to calibrate an FWD
according to the new procedure.
In 2000, the four FWD
calibration centers were used to calibrate a total of 79 FWDs
, including 57 owned by State highway agencies.
It is known that a laboratory resilient modus test and a falling weight deflectometer (FWD
) test are usually used to obtain the resilient modulus of subgrade [5, 6].
Keep this Hawthorns run going @davemorgan68 my worry is the flanks we have to stop FB's coming fwd
so choice of wide midfield/Fwds is critical @MarkWbaI really do not fear any team in the prem at the moment @thevan the first big home test of the season, another step to see if the current side is ready to emulate the 78/79 side @johnilf Man c (have) title hopes so dangerous fixture, will shutting up shop work again or do we take advantage of leaky defence?