Topic
Three-phase
About: Three-phase is a research topic. Over the lifetime, 16801 publications have been published within this topic receiving 159477 citations.
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Papers
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24 Oct 2008
TL;DR: A three-phase soft-switching, bidirectional dc-dc converter for high-power automotive applications that operates with a novel asymmetrical but fixed duty cycle for the top and bottom switches of each phase leg.
Abstract: This paper presents a three-phase soft-switching, bidirectional dc-dc converter for high-power automotive applications. The converter employs dual three-phase active bridges and operates with a novel asymmetrical but fixed duty cycle for the top and bottom switches of each phase leg. Simulation and experimental data on a 6-kW prototype are included to verify the novel operating and power flow control principles.
49 citations
TL;DR: This paper proposes a new three-phase single-stage power-factor corrector buck-boost-type rectifier topology that only requires four switches, improving the rectifier efficiency as only one reverse-blocking power semiconductor conducts at any time.
Abstract: This paper proposes a new three-phase single-stage power-factor corrector buck-boost-type rectifier topology. The typical topology uses a bridge configuration with six switches. This new topology only requires four switches, improving the rectifier efficiency as only one reverse-blocking power semiconductor conducts at any time. A vector-based sliding-mode control method for the three-phase input currents is also proposed. This fast and robust technique uses sliding mode to generate /spl alpha//spl beta/ space-vector modulation, which forces the input line currents to track a suitable sinusoidal reference. A near-unity power-factor operation of the rectifier is obtained using a sinusoidal reference in phase with the input source voltages. A proportional-integral controller is adopted to regulate the output voltage of the converter. This external voltage controller modulates the amplitude of the current references. The characteristics of the new rectifier are verified with experimental results.
48 citations
Patent•
29 Nov 2008
TL;DR: In this paper, a phase transformation network is used to convert electric power from typically unstable multiple dc sources to ac electric power of suitable quality for injection into an electric power grid. But, the conversion is accomplished by current regulation of the output from the dc source to the input of each one of multiple inverters in a system, with each inverter outputting multiple phase currents that are out of phase with the multiple phase outputted from all other inverters.
Abstract: Electric power from typically unstable multiple dc sources is converted to ac electric power of suitable quality for injection into an electric power grid. Conversion is accomplished by current regulation of the output from the dc sources to the input of each one of multiple inverters in a system, with each inverter outputting multiple phase currents that are out of phase with the multiple phase currents outputted from all other inverters in the system. The multiple phase currents from all of the inverters in a system are connected to the secondary windings of a phase transformation network that produces a three phase current output having a step shaped waveform for injection into the electric power grid.
48 citations
23 Feb 1992
TL;DR: The grey noise pulse width modulation (GNPWM) as discussed by the authors was proposed for three-phase, voltage-controlled inverters, which combines the best features of the deterministic space-vector PWM and the random PWM techniques.
Abstract: The grey noise pulse width modulation (GNPWM) technique for three-phase, voltage-controlled inverters is described. It is shown that the GNPWM combines the best features of the deterministic space-vector PWM and the random PWM techniques. The GNPWM technique is characterized by: the highest DC/AC voltage conversion; high-quality output current at a low switching frequency of the inverter; varying switching patterns and spread, grey-noise, harmonic spectra of the output voltage and current, beneficial for the noise/vibration characteristics of a drive system supplied from the inverter; and simplicity of the hardware implementation using an integrated microcontroller system. Theoretical background, simulations, and experimental results are presented. >
48 citations
25 Jul 2010
TL;DR: In this article, the authors proposed a novel topology for electrical vehicles and plug-in hybrid electrical vehicles with controllable power factor with 3-phase input and unity power factors with single phase input.
Abstract: This paper proposes a novel topology for Electrical Vehicles and Plug-in Hybrid Electrical Vehicles with controllable power factor with 3-phase input and unity power factor with single phase input. The proposed on-board topology provides bidirectional power flow to/from the grid, low weight, low volume, and isolation. A control scheme is devised and a complete simulation of power control is performed over varying loads, varying input voltages, three phase or single phase input, and switching schemes. Simulation results are presented that demonstrate the ability to control power flow and synthesize the grid currents to be sinusoidal.
48 citations