This paper shows architecture for an energy recycler circuit used for dc-source burn-in test. The... more This paper shows architecture for an energy recycler circuit used for dc-source burn-in test. The circuit, composed of power electronics devices, accomplishes the burn-in test in a dc power supply with rated voltage equal 54.5 V and current equal 50 A. It uses a PIC16F870 microcontroller to control a current inverter and a passive non-dissipative snubber to help the commutation
2012 10th IEEE/IAS International Conference on Industry Applications, 2012
ABSTRACT This paper presents a double boost converter with power factor correction (PFC) suitable... more ABSTRACT This paper presents a double boost converter with power factor correction (PFC) suitable for parallel/series connected inputs, depending on the grid voltage value. Using the proposed converter is possible to eliminate the low-frequency autotransformer in input of the converter which allows UPS operation with two input voltage values (110V and 220V). The control strategy is based on the average current mode control and applied to both converters, in order to provide power factor correction and output voltage regulation. The simulation results for a 2.4 kW proposed converter are presented in order to demonstrate the proposed ideas.
This paper proposes a new control technique to improve the fault-ride through capability of doubl... more This paper proposes a new control technique to improve the fault-ride through capability of doubly fed induction generators (DFIG). In such generators the appearance of severe voltage sags at the coupling point make rise to high over currents at the rotor/stator windings, something that makes necessary to protect the machine as well as the rotor side power converter. As a
ABSTRACT This paper presents an electronic circuit for stand-alone systems application. The conve... more ABSTRACT This paper presents an electronic circuit for stand-alone systems application. The converters architecture is composed by a battery charge controller, a step-up converter based on three-state switching cell, and a voltage source inverter (VSI). All of them operate with pulse width modulation (PWM) technique. The battery charge controller is a classic boost converter that operates in continuous conduction mode (CCM) and it is used to regulate the battery bank voltage, and also to reach the maximum power point from wind turbine. The second converter is a step-up, where a secondary winding is coupled to the transformer to raise the battery voltage up to 400VDC. It also operates in CCM applying two overlapping gate signals. In order to perform the DC-AC conversion, a classical voltage source inverter operating with unipolar voltage switching technique is used. Principles of operation, as well as, experimental results of the assembled prototype are presented.
This paper shows architecture for an energy recycler circuit used for dc-source burn-in test. The... more This paper shows architecture for an energy recycler circuit used for dc-source burn-in test. The circuit, composed of power electronics devices, accomplishes the burn-in test in a dc power supply with rated voltage equal 54.5 V and current equal 50 A. It uses a PIC16F870 microcontroller to control a current inverter and a passive non-dissipative snubber to help the commutation
2012 10th IEEE/IAS International Conference on Industry Applications, 2012
ABSTRACT This paper presents a double boost converter with power factor correction (PFC) suitable... more ABSTRACT This paper presents a double boost converter with power factor correction (PFC) suitable for parallel/series connected inputs, depending on the grid voltage value. Using the proposed converter is possible to eliminate the low-frequency autotransformer in input of the converter which allows UPS operation with two input voltage values (110V and 220V). The control strategy is based on the average current mode control and applied to both converters, in order to provide power factor correction and output voltage regulation. The simulation results for a 2.4 kW proposed converter are presented in order to demonstrate the proposed ideas.
This paper proposes a new control technique to improve the fault-ride through capability of doubl... more This paper proposes a new control technique to improve the fault-ride through capability of doubly fed induction generators (DFIG). In such generators the appearance of severe voltage sags at the coupling point make rise to high over currents at the rotor/stator windings, something that makes necessary to protect the machine as well as the rotor side power converter. As a
ABSTRACT This paper presents an electronic circuit for stand-alone systems application. The conve... more ABSTRACT This paper presents an electronic circuit for stand-alone systems application. The converters architecture is composed by a battery charge controller, a step-up converter based on three-state switching cell, and a voltage source inverter (VSI). All of them operate with pulse width modulation (PWM) technique. The battery charge controller is a classic boost converter that operates in continuous conduction mode (CCM) and it is used to regulate the battery bank voltage, and also to reach the maximum power point from wind turbine. The second converter is a step-up, where a secondary winding is coupled to the transformer to raise the battery voltage up to 400VDC. It also operates in CCM applying two overlapping gate signals. In order to perform the DC-AC conversion, a classical voltage source inverter operating with unipolar voltage switching technique is used. Principles of operation, as well as, experimental results of the assembled prototype are presented.
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