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The aim of this paper is the study and implementation of the start-up process of a shunt active compensators. This process is divided in two steps: the passive charging of the compensating capacitor accomplished by the inverse diodes of the compensator power inverter and the active charging of the capacitor, using the IGBTs. The second step can be implemented in many ways, with different ratios of...
In many power electronic applications galvanic isolating IGBT/MOSFET drivers are advantageously used. The main reasons are safety issues, driving high voltage power semiconductors with blocking voltages of typically 600 V or above and avoiding or minimizing unwanted ground current loops. This paper deals with a new method for achieving galvanic isolation in high voltage drivers based on printed circuit...
This paper is focused to achieving the efficient operation of an twelve-pulses Static Synchronous Compensator (StatCom) controlled by a fixed point DSP. The controller includes a digital Phase-Locked-Loop (PLL), pulse generator modules for firing angle control of the Voltage Source Converter (VSC), along with the appropriated circuitry for charging the DC Capacitor. The StatCom output signal processing...
This paper is aimed to achieve the efficient operation of a twelve-pulses static synchronous compensator (StatCom) controlled by a DSP. The controller includes a novel phase-locked-loop (PLL), pulse generator modules for firing angle control of the voltage source converter (VSC), along with the appropriated circuitry for charging the DC capacitor. The StatCompsilas output signal processing for controlling...
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...
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