Tài liệu Power Electronic Handbook P4 pptx
Tài liệu Power Electronic Handbook P4 pptx
... larger power applications, typically above 1.5 kW, it is advisable to use a higher power supply. In
some applications, two of the three phases of a three-phase power system are used as the source powering
the ... CRC Press LLC
3. AC power systems can be interconnected employing a DC tie without reference to system frequen-
cies, short circuit power, etc.
4. High-speed control of DC...
Tài liệu Power Electronic Handbook P18 pptx
... PCU output power. When the PCU output power
reaches a maximum level, the input resistance is fixed at the value that produces this level. Presumably
when output power is a maximum, input power is ... maximum power from
the array. This is done by incorporating maximum power- tracking circuitry into the PCU. Figure 18.4
shows the
I
–
V
characteristics of an array with the max...
Tài liệu Power Electronic Handbook P223 docx
... for power electronics
systems. Obviously, advances in raw processing power for personal computers as well as the rapid devel-
opment of electronic design software have influenced the field of power ... the simulation of power electronics systems proved to
be difficult from the outset, because power electronics circuits typically operate in a highly discontinuous
mode, with power se...
Tài liệu Power Electronic Handbook P22 pdf
... (1791–1867) experimented with magnetic fields. He wound two coils on an iron ring.
When one coil was powered from a battery, he noticed that a transient voltage developed on the second
coil and, later,
Tài liệu Power Electronic Handbook P21 docx
... electrical loads in the MEC power systems. As is described in Refs. 5 through 8,
most of the future electic loads require power electronic controls. In future automobiles, power electronics
will be used ... areas of power electronics and electric motor drives along with fault-tolerant electrical
distribution systems and control electronics enable the transforming of present automoti...
Tài liệu Power Electronic Handbook P20 docx
... compensation
• Increase the power angle, i.e., phase shift
One can also reverse the power flow by changing the sign of the power angle; i.e., a positive power
angle will correspond to a power flow from sending ... controller.
© 2002 by CRC Press LLC
today’s power systems. This chapter describes specifically the Unified Power Flow Controller known as
the UPFC. This power electr...
Tài liệu Power Electronic Handbook P19 pdf
... Kessinger, J. P., Advanced power electronics as an enabler of unbundled power quality services, in
Proceedings of the NSF Conference on Unbundled Power Quality Services in the Power Industry,
Key
West, ... information about the power
supply and other factors can be sent between a customer and a power company. For example, information
of power system restoration can be sent...
Tài liệu Power Electronic Handbook P17 ppt
... displacement power factor
yields the total power factor, 0.75 in this case. Thus, the incandescent lamp, a resistive load, appears to
the power system as a 0.75 power factor lagging load. Low power ... it is possible to achieve a power factor greater than 0.99 and a THD less
Power factor
Average power
Apparent power
1
T
v
s
t()i
s
t()
0
T
∫
V
rms
I
rms
==
Power factor...
Tài liệu Power Electronic Handbook P6 ppt
... 5th
European Conference on Power Electronics and Applications, Brighton, U.K., 1993, 134.
8. Seki, N. and Uchino, H., Converter configurations and switching frequency for a GTO reactive power
compensator, ... high-
power voltage source inverters, IEEE Trans. Power Electron., 7, 189, 1992.
© 2002 by CRC Press LLC
25. Corzine, K. A., Delisle, D. E., Borraccini, J. P., and Baker, J. R., M...
Tài liệu Power Electronic Handbook P5 docx
... of power electronics circuits. The most widely accepted definition of a power
electronics circuit is that the circuit is actually processing electric energy rather than information. The
actual power ... are connected to loads,
which require either reactive power or effective power feedback. In the case of reactive power, the
direction of the power flow in the converter changes peri...
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