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发帖数: 32 | 1 请研究方向适合的站内联系
No1: A new active common mode EMI filter for switched mode PWM inverter fed
ac drives
Submitted to the Journal of Engineering, Computing and Architecture
ABSTRACT
This paper proposes a new active common mode electromagnetic interference (
EMI) filter for switched mode PWM Inverter applications. The proposed filter
is based on current sensing and compensation circuit which utilizes fast
transistor amplifier for current compensation. The amplifier is biased with
an isolated low voltage DC power supply. Hence it is possible to construct
an active filter independent of the source voltage of equipment. Thus this
filter can be used in any application regardless of working voltage.
Simulation of output wave form verified by using MATLAB Simulink model
results.
Key word: ACIF, Switched mode PWM Inverter, LISN, EMI noise
No. 2: Supervisory Expert Fuzzy Controller Based Frequency Stabilization in
a Parallel AC – DC Multi Area Interconnected Power Systems
Submitted to the Journal of Engineering, Computing and Architecture
Abstract: This paper presents a Supervisory Expert Fuzzy Controller (SEFC)
for maintaining the system frequency in a parallel AC-DC interconnected
thermal power system. In the proposed control scheme, the input scaling
factor tuning of a direct expert controller is made using the area control
error and power plant system input to obtain better performance for a
different load disturbance. The control scheme will reduce the Area Control
Error (ACE) and increase the system dynamic stability. The control scheme
consists of a lower level direct fuzzy controller and an upper level
supervisory fuzzy controller. The lower level controller provides the
solution to a particular situation and the upper level controller provides a
mechanism to the main goal of the system. The responses to various load
changes in the multi area system are studied and the performance of the
proposed expert controller is compared with the conventional integral
controller and the fuzzy controller. The results prove that the SEFC
performance is better in terms of stability and robustness than conventional
control methods.
Keywords: Load Frequency Control, AC – DC Interconnected System, High
Voltage Direct Current (HVDC) Link, Area Control Error, Direct Fuzzy
Controller, Supervisory Expert Fuzzy Controller. |
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