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The electrical power transfer is an essential element of an energy system. Along with frequency and phase, electrical power influences the dimensions and costs involved. The paper presents an analysis of mark-space method, which offers a mathematical solving of power measurement in singlephase AC circuits. Remarkable that it can has analog solution implemented. The existence of electronic circuits...
The voltage regulation for stand-alone three-phase single-stage boost inverter (SSBI) is presented in this paper. In three-phase SSBI, the voltage regulation is achieved by adjusting the boost ratio. The SSBI has been simulated for a wide range of input dc voltages and load levels. Moreover, the performance a 2kW 208/230V laboratory-scale three phase boost inverter is presented for both linear and...
In this paper it will be presented through simulations, the verification and validation of a previously built Matlab/Simulink/Sim-Power-Systems toolbox for a PWM AC-to-DC converter provided with a new line conditioning control strategy, more complex and useful than the actually applied unity power factor rectifier control method. It will be studied the performances of this converter toolbox by applying...
In this paper, a novel converter, named negative-output KY buck-boost converter, is presented herein, which has no bilinear characteristics. First of all, the basic operating principles of the proposed converter are illustrated in detail, and secondly some simulated and experimental results are provided to verify its effectiveness.
A novel converter, named negative-output KY boost converter, is presented here in, which needs one additional capacitor and one additional diode as compared to the boost converter. In the following, the basic operating principles of the proposed converter are illustrated in detail, together with some simulated and experimental results to verify its effectiveness.
A novel voltage bucking/boosting converter is presented herein, which has negative output and no bilinear characteristics. First of all, the basic operating principles of the proposed converter are illustrated in detail, and secondly some simulated and experimental results are provided to demonstrate its effectiveness.
A novel converter, named as negative-output KY boost converter, is presented herein, which needs one additional capacitor and one additional diode as compared to the boost converter. In the following, the basic operating principle of the proposed converter is illustrated in detail, together with some simulated and experimental results to verify its effectiveness.
In this paper, a novel converter, named as negative-output KY buck-boost converter, is presented herein, which has no bilinear characteristics. First of all, the basic operating principle of the proposed converter is illustrated in detail, and secondly some simulated and experimental results are provided to verify its effectiveness.
Experimental validation of motor drives to ensure appropriate efficiency and performance is essential to such sectors as: industrial; aerospace, naval and land propulsion devices, and utilities. For low power machines, this is typically a non-issue since test beds are relatively inexpensive and accessible. However, as power levels increase into the upper kilowatt and megawatt range, validation of...
This paper presents the implementation and design of a power converter for an autonomous wind self-excited induction generator (SEIG) feeding an isolated load through the employment of a DSP-based rectifier-inverter circuit. The output voltage and frequency of the studied wind SEIG is inherently variable due to random fluctuation of wind-speed variation. A three-phase constant-voltage constant-frequency...
This paper is concerned with the design and simulation of a pulse width modulation (PWM) rectifier for three-phase Permanent Magnetic motor drive. Based on the mathematical model of PWM rectifier, the dual-close-loop engineering design with decoupled feed-forward control is applied in the 3-phase voltage source rectifier. The objective to be reached is to realize unity power factor at the input ac...
This paper deals with the inclusion of frequency effects (skin effect) in an enhanced transport delay model for electric cables of arbitrary length connected to a PWM-IGBT variable frequency drive (VFD), to better predict overvoltage peaks in the line during transient.The problem and the importance of predicting peak overvoltages to determine the appropriate insulation to be used by cables is addressed...
With advancement of recent high-speed switching devices, PWM inverters are operated in high frequencies and often generate EMI noises due to common-mode leakage currents. There are mainly two types of leakage currents. One is inverter leakage currents due to parasitic capacitances between switching devices and heat sinks. The other is load leakage currents due to parasitic capacitances between the...
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