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- Waleed Al-Saedi, Stefan Lachowicz, Daryoush Habibi
- 2011 IEEE Power Engineering and Automation…
- 2011

A robust current control strategy for PV (photovoltaic) grid-connected systems is required for reliable use of solar energy as an abundant and clean renewable energy. This paper presents real time optimization parameters of the current control strategy for a 3-phase photovoltaic grid-connected Voltage Source Inverter (VSI) system. The proposed controller… (More)

- Stefan Lachowicz, Hans-Jörg Pfleiderer
- 4th IEEE International Symposium on Electronic…
- 2008

The paper presents a novel method of evaluating the square root function in FPGA. The method uses a linear approximation subsystem with a reduced size of a look-up table. The reduction in the size of the lookup table is twofold. Firstly, a simple linear approximation subsystem uses the lookup table only for the node points. Secondly, a concept of a variable… (More)

- Hans-Jorg Pfleiderer, Stefan Lachowicz
- 2009 MIXDES-16th International Conference Mixed…
- 2009

This paper presents a novel method of reducing the spurious signal content in a digitally synthesized sine wave at the output of a numerically controlled oscillator (NCO). The proposed method uses a linear approximation subsystem with a reduced size look-up table (LUT). Two NCO architectures are considered. Architecture 0 - which is the standard - in which… (More)

- Hoang Nam Nguyen, Daryoush Habibi, Viet Q. Phung, Stefan Lachowicz, Kungmeng Lo, Byung Kyu Kang
- GLOBECOM
- 2006

We propose a joint optimization model for capacity design of networks with p-cycles. The model is based on a modified definition of network fundamental cycles and the available straddling links. Concepts about visible and hidden straddling links, which are essential components of our model are also introduced. This is the first ILP model for joint… (More)

- Stefan Lachowicz
- 2008

The paper presents a novel method of evaluating the square root function in FPGA. The method uses a linear approximation subsystem with a reduced size of a lookup table. The reduction in the size of the lookup table is twofold. Firstly, a simple linear approximation subsystem uses the lookup table only for the node points. Secondly, a concept of a variable… (More)

- Chul Kim, A. M. Rassau, Stefan Lachowicz, Mike Myung-Ok Lee, Kamran Eshraghian
- EURASIP J. Adv. Sig. Proc.
- 2006

This paper introduces a novel architecture for next-generation adaptive computing systems, which we term 3D-SoftChip. The 3D-SoftChip is a 3-dimensional (3D) vertically integrated adaptive computing system combining state-of-the-art processing and 3D interconnection technology. It comprises the vertical integration of two chips (a configurable array… (More)

- A. M. Rassau, T. C. B. Yu, +4 authors T. D. Wilkinson
- DATE
- 1998

A novel Smart Pixel Opto-VLSI architecture to implement a complete 2-D wavelet transform of real-time captured images is presented. The Smart Pixel architecture enables the realization of a highly parallel, compact, low power device capable of real-time capture, compression, decompression and display of images suitable for Mobile Multimedia Communication… (More)

- Hans-Jörg Pfleiderer, Stefan Lachowicz
- 2009 International Conference on Field…
- 2009

This paper presents a novel method of reducing the spurious signal content in a digitally synthesized sine wave at the output of a numerically controlled oscillator (NCO). The proposed method uses a linear approximation subsystem with a reduced size look-up table (LUT). Two NCO architectures are considered. Architecture 0 - which is the standard - in which… (More)

- Whamid Al-Shabib, Stefan Lachowicz
- 2013 5th International Conference on Modeling…
- 2013

In this paper COMSOL model is used to model the s-parameters of the electromagnetic shielding of layer/layers of Polyaniline (PAni) for Wi-Fi Electromagnetic Interference (EMI) shielding. PAni has a good future for minimizing the problems with Electromagnetic Shielding (EMS), and will be increasingly be used to provide protection from Electromagnetic… (More)