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This paper proposes the design and implementation of a field-programmable gate array (FPGA)-based drive system for a rotor flux oriented vector-controlled induction motor drive. The system is realized by using FPGA (XC2V250) from Xilinx and its related hardware circuit. A vector oriented control structure using integer arithmetic has been developed for the voltage control of induction motors. The...
A high performance three-phase active power filter is proposed in this paper. A novel circuit for detecting the amplitude of the active part of the fundamental load current is also proposed. The detection time of the current is not more than 1/4 cycle. Its transient response is superior to the other conventional techniques. Moreover, the proposed algorithm avoids the use of mains voltage signal in...
A single-stage power converter for dc uninterruptible power supply (UPS) is proposed in this paper. Basically the proposed converter is an integration result of a power factor correction circuit with a dc-to-dc converter to achieve simple hardware circuit, high efficiency, and low cost for extra UPS function. Under normal operation, a two-switch CUK converter operates as an ac to dc converter with...
This paper presents a soft-switching single-phase three-arm dynamic voltage restorer which aimed at solving voltage disturbances such as voltage swell, voltage sag, over-voltage and under-voltage. The proposed scheme is composed of a three-arm topology which operates as a rectifier and an inverter. Rather than the conventional four-arm topology, the proposed three-arm topology not only reduces the...
This paper presents an FPGA-based control circuit for controlling the soft-switching single-phase three-arm unified power quality conditioner (UPQC). The proposed soft-switching UPQC employs three-arm topology and uses simple resonant units. All main switches of the high-frequency arm operate at zero-voltage-switching (ZVS) turn on, while the auxiliary switches operate at zero-current-switching (ZCS)...
The system analysis and circuit implementation of a reduced parts three-phase soft-switching inverter (THSSI) comprising four main switches and four auxiliary switches is proposed in this paper. All main switches in the proposed THSSI operate at zero-voltage-switching (ZVS) turn-on, while the auxiliary switches operate at zero-current-switching (ZCS) turn-on and turn-off. Since the control circuits...
This paper proposed a novel single-phase soft-switching unipolar PWM active power filter (SSUPAPF). The proposed active power filter uses a simple auxiliary resonant circuit. The main switches of high-frequency arm operate at zero-voltage- switching (ZVS) turn-on. Also, the auxiliary switches operate at zero-current-switching (ZCS) turn-off. The main switches of low-frequency arm operate at 60Hz to...
A novel four main switches and four auxiliary switches power converter configuration of the three-phase voltage-doubler soft-switching rectifier is proposed in this paper. The reduction in the number of main switches can also increase the reliability because the control circuits and the auxiliary circuits are thereby reduced to two sets. All main switches in the proposed rectifier operate at zero-voltage-switching...
This paper proposed a novel single-phase soft-switching unipolar PWM rectifier (SSUPR) using a simple auxiliary resonant unit. All main switches of high-frequency arm operate at zero-voltage-switching (ZVS) turn-on, while the auxiliary switches operate at zero-current-switching (ZCS) turn-off. All main switches of low-frequency arm operate at 60 Hz to greatly reduce switching losses. Moreover, a soft-switching...
This study proposes a novel single-phase soft-switching active power filter (SSAPF) using a simple resonance unit. All main switches in the proposed SSAPF operate at zero-voltage-switching (ZVS) turn on, while the auxiliary switches operate at zero-current-switching (ZCS) turn off. The advantages of the proposed power filter include improved efficiency, reduced voltage stresses, and greatly reduced...
A novel power converter configuration of a three-phase soft-switching rectifier comprising four main switches and four auxiliary switches is proposed in this paper. The reduction in number of main switches can also increase the reliability because the control circuits and the auxiliary circuits are thereby reduced to two sets. All main switches in the proposed rectifier operate at zero voltage switching...
A novel single-phase full-bridge soft switching rectifier (FBSSR) using a new resonance unit is proposed in this paper. All main switches in the proposed soft switching rectifier operate at zero-voltage-switching (ZVS) turn-on and turn-off. Moreover, the auxiliary switches operate at zero-current-switching (ZCS) turn-on and turn-off. Major benefits of this novel rectifier are found in efficiency improvement,...
This paper presents a zero-voltage-switching (ZVS) pulse-width-modulated (PWM) single-phase inverter and the establishment of a V-connected three-phase inverter using two such single-phase modules. All main switches in the ZVS-PWM inverter operate at ZVS turn-on. The auxiliary switches operate at zero-current-switching (ZCS) turn-off. Since commutations of the main power devices occur with low losses,...
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