Power Electronic Handbook P7
Power Electronic Handbook P7
... arrangement [1]. However, most power electronics converters are circuits with controllable voltage output. To achieve current control, the voltage of the power electronics converter can be controlled ... compact size, and low cost, switching power supplies continue to gain popularity. Switching power supplies could be as high as three times more efficient than linear power supplies a...
Power Electronic Handbook P9
... regenerate power, and high
power capability. DC drives and motors from a few horsepower to hundreds of horsepower could be
operated and controlled efficiently in all four quadrants when powered by ... Rajapandian Ayyanar, Amit Kumar Jain
Overview • Power Quality Considerations • Passive Harmonic Filters • Active Filters
for Power Conditioning • Unity Power Factor Rectification
18...
Power Electronic Handbook P8
... European Space Power Conf. (ESPC), Graz, August 1993, 173–178.
12. J. Fernando Silva and Sonia S. Paulo, Fixed frequency sliding mode modulator for current mode
PWM inverters, in Power Electronics ... used in other applications, not
discussed here, such as inverters [14, 18], power factor controllers [16], and AC power supplies [17].
References
1. V. I. Utkin, Sliding Modes and Their...
Power Electronic Handbook P11
... used for constant-speed applications. With
recent improvements in semiconductor technology and power electronics, the induction machine is
seeing wider use in variable-speed applications [6].
This ... T. A. Lipo, A new method for rotor time constant tuning in indirect field oriented
control, in Power Electronics Spec. Conf., 573–580, 1990.
14. D. M. Brod and D. W. Novotny, Current control...
Power Electronic Handbook P10
... Machines
(Brushless DC
Machines/Electronics)
10.1 Introduction
10.2 Machine Construction
Permanent Magnets • Stator Windings
10.3 Motor Characteristics
Mathematical Model
10.4 Power Electronic Converter
... with induction motors
in the fractional horsepower range. The former will have better efficiency and better power factor and,
therefore, a greater output power for the...
Power Electronic Handbook P13
... motor must have
an even number of phases. Also, the power devices must be rated to withstand the full DC supply voltage.
The high cost of power semiconductor devices and the need to reduce the ... the
threshold level appropriately.
13.8 Applications
The simple motor structure and inexpensive power electronic requirement have made the SRM an
attractive alternative to both AC and DC ma...
Power Electronic Handbook P12
...
l
pm
+
T
cog
+=
T
cog
T
q
z
zN
t
q
r
()T
d
z
zN
t
q
r
()sin+cos
z∈Z
∑
=
T
q
z
T
d
z
T
q
z
T
d
z
© 2002 by CRC Press LLC
The power into the machine is simply the sum of the power into each phase:
(12.8)
and the power output of the machine is
(12.9)
where
ω
rm
... magnet motor drives, IEEE Trans. Ind. Electron.,
35(4), 537–541, 1988.
3. B. K. Bose, Ed., Power Electron...
Power Electronic Handbook P16
... orderly shutdown of loads.
Power Conditioning
A UPS provides continuous, regulated power to its load, under all conditions of the utility power line.
Unlike other types of power conditioning equipment, ... transformers and some do not.
Laura Steffek
Best Power
John Hecklesmiller
Best Power
Dave Layden
Best Power
Brian Young
Best Power
© 2002 by CRC Press LLC...
Power Electronic Handbook P15
... computer disk drives and the like. The power level for these drives usually range below
20 to 30 kW; however, drives with slightly lower control quality usually have power levels below 50 to
60 kW.
Servo ... magnet (PM)
DC motors, permanent magnet synchronous motors or, rarely, induction motors. For low -power appli-
cations stepping motors can be used, but this type of motor exhibits a...
Power Electronic Handbook P14
... consumes twice the power
of exciting the motor one phase on at a time. Exciting a three-phase motor with two phases on at a time
produces no additional torque but also consumes twice the power of exciting
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