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ABSTRACT: This paper presents the three-phase voltage source soft-switching pulse width modulation (PWM) based inverter using the quasi-resonant commutation snubber circuits in order to improve the power conversion efficiency, realize the high control performances and reduce the electromagnetic noises as compared with three-phase voltage source conventional hard-switching PWM inverter. At first, the resonant AC link snubber-assisted soft-switching inverter is presented as the zero voltage soft-switching (ZVS) PWM inverter and the operation principle of the resonant AC link snubber circuit is explained. Secondly, the common mode and differential mode electromagnetic conductive noises of the resonant AC link snubber-assisted ZVS-PWM inverter is evaluated as compared with the hard-switching PWM inverter, and it is shown clearly that the reduction of differential mode noise is ineffective by using the resonant AC link snubber-assisted ZVS-PWM inverter as compared with hard-switching PWM inverter from the measured results. Thirdly, in order to overcome this problem, the hybrid resonant commutation bridge leg link snubber circuit that the zero voltage and zero current soft-switching (ZVZCS) of all the switches of inverter bridge arms are achieved is proposed, and operation principle of this hybrid resonant commutation bridge leg link snubber circuit is presented. And at last, the electromagnetic noise level of the ZVZCS-PWM inverter and hard-switching PWM inverter are evaluated, it is explained that both common mode and differential mode noises can reduce by using the hybrid resonant commutation bridge leg link snubber as compared with hard-switching PWM inverter, and it is described that ZVZCS-PWM inverter is suitable to improve both conductive common mode and differential mode electromagnetic noise levels.
Power Electronics and Drive Systems, 2003. PEDS 2003. The Fifth International Conference on; 12/2003
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ABSTRACT: This paper presents a performance analysis of active auxiliary resonant commutation bridge-leg snubber-assisted three-phase voltage-fed soft-switching PFC rectifier using IGBTs which can operate under a condition of zero voltage switching (ZVS) using a digital control scheme based instantaneous power feedback. This power converter is suitable for high power applications as compared with the other types of snubber assisted soft switching power conversion system. The operating performances of this three-phase PFC rectifier are illustrated and evaluated on the basis of simulational and experimental results.
Power Electronics and Drive Systems, 2003. PEDS 2003. The Fifth International Conference on; 12/2003
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ABSTRACT: This paper presents a novel prototype of three-phase voltage source type zero voltage soft-switching (ZVS) inverter using the main and auxiliary IGBT power module packages in order to reduce their switching power losses as well as electro-magnetic conductive and radiative noises. A single inductor-based resonant AC link snubber circuit specified as one of auxiliary resonant commutation snubbers to achieve the ZVS for the three-phase voltage source type inverter operating under a principle of specific instantaneous space voltage vector sinewave modulation is originally demonstrated as compared with the other types of resonant AC link snubber circuit topologies. In addition to this, its operation principle and unique features are described in this paper. The practical basic operating performances of the new conceptual instantaneous space voltage vector modulated three-phase voltage source soft-switching inverter are evaluated and discussed on the basis of waveforms quality evaluations on the output line to line voltage, power loss analysis, power conversion efficiency and electromagnetic conductive and radiative noise from an experimental point of view, comparing with three-phase voltage source hard-switching inverter.
Industrial Electronics Society, 2003. IECON '03. The 29th Annual Conference of the IEEE; 12/2003
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ABSTRACT: This paper presents a novel prototype of the three-phase power module bridge package type auxiliary resonant AC link snubber circuit for the three-phase voltage source type sinewave soft switching PWM inverter using IGBT power module which operates under instantaneous space voltage vector modulation scheme. The operating principle of a novel prototype resonant AC link snubber circuit in addition to its unique features are described for current source load model during one switching period which is equivalent to the three-phase voltage source type inverter with LPF, along with its design approach based on the simulation data. The steady-state performance evaluations of space vector modulated three-phase voltage source type sinewave soft switching inverter incorporating a new prototype circuit of three-phase active auxiliary resonant AC link snubber is illustrated and discussed as compared with those of three-phase voltage source type sinewave hard switching PWM inverter with a space voltage vector modulation strategy. The power loss analysis of the three-phase soft switching PWM inverter using IGBT power modules is actually evaluated and discussed on the basis of the conduction power losses based upon the measured v-i characteristics in addition to all the switching power losses of each IGBT with antiparallel diode.
Industrial Electronics Society, 2003. IECON '03. The 29th Annual Conference of the IEEE; 12/2003
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ABSTRACT: In recent years, it has been more important power conversion technology for implementing the downsizing and low electromagnetic noise, high performance and high efficiency in order to achieve high frequency pulse modulation-based switching of the power semiconductor devices in power conversion circuits and systems with a great advance of the power semiconductor switching devices. In general, high frequency switching-based pulse width modulation of the power semiconductor devices in the inverter and converter produces some significant problems such as increase of switching power losses and EMI/RFI noises, leak current generation related to a high dv/dt and electrical insulation breakdown of reactor and transformer due to a high di/dt. In order to overcome these problems, soft switching power conversion circuit technologies are able to give effective solutions from a practical point of view. In this paper, a novel prototype of the resonant AC link snubber- assisted inverter that the auxiliary resonant commutation circuits are simply connected in parallel with the three-phase AC load of the three-phase voltage source inverter is presented to achieve the zero voltage soft switching PWM or pulse modulated zero voltage soft-switching inverter or rectifier, and operation mode and the sinewave modulation method of an active resonant AC link snubber circuit is described, and the performance evaluations such as output line-to-line voltage waveforms, actual power conversion efficiency, electromagnetic conductive and radiative noises of this resonant snubber-assisted voltage source soft-switching inverter circuit are basically evaluated and discussed as compared with those of three-phase hard-switching inverter from an experimental point of view.
Telecommunications Energy Conference, 2003. INTELEC '03. The 25th International; 11/2003
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ABSTRACT: This paper presents a novel prototype of the three-phase power module bridge package type auxiliary resonant AC link snubber circuit for the three-phase voltage source type sinwave soft switching PWM inverter operating under instantaneous space voltage vector modulation scheme. The operating principle of a novel prototype resonant AC link snubber circuit in addition to unique features are described for current source load model during one switching period which is equivalent to the three-phase voltage source type inverter with LPF, along with its design approach based on the simulation data. The steady-state performance evaluations of space vector modulated three-phase voltage source type sinewave soft switching inverter incorporating a new prototype circuit of three-phase active auxiliary resonant AC link snubber is illustrated and discussed as compared with those of three-phase voltage source type sinewave hard switching PWM inverter with a space voltage vector modulation strategy. The power loss analysis and conventional efficiency estimation of the three-phase voltage source soft switching PWM inverter using IGBT power modules is actually evaluated and discussed on the basis of the conduction power losses based upon the measured v-i characteristics for in addition to all the switching power losses of IGBT with antiparallel diode.
Telecommunications Energy Conference, 2003. INTELEC '03. The 25th International; 11/2003
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ABSTRACT: In this paper, a high frequency pulse current transformer-assisted auxiliary active resonant commutation snubber (HFTA-ARCS) for voltage source power conversion is proposed. A three phase voltage source type soft switching inverter incorporating HFTA-ARCS circuits in its three bridge legs can reduce the current rating of the auxiliary active power switches and simplified sensorless control scheme without the specified boost current management required for soft switching. Its operating principle and digital control scheme are described and a practical design method of circuit parameters on this HFTA-ARCS circuit is also introduced on the basis of computer simulation results. Moreover, this space vector modulated soft switching inverter system with DSP-based digital control scheme is discussed on the basis of performance evaluations. The effectiveness of this inverter is proved by simulation results and this inverter system is also compared with the conventional three-phase hard switching inverter under the conditions of specified parameters
Industrial Electronics, 2001. Proceedings. ISIE 2001. IEEE International Symposium on; 02/2001
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ABSTRACT: This paper presents a new active quasi-resonant snubber-assisted
(auxiliary quasi-resonant commutation block-link; ARCB) voltage source
type three phase soft switching PWM-PFC rectifier, which can operate
under a principle of zero voltage soft switching (ZVS) commutation. Its
operating principle and the steady-state performances of this
digitally-controlled three phase soft switching PWM-PFC rectifier system
with an instantaneous power feedback scheme are illustrated and
evaluated on the basis of computer-aided simulation analysis
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual; 02/2001
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ABSTRACT: This paper presents a novel type of active resonant AC link
snubber circuit topology with a single quasi-resonant inductor, which is
more effective in order to achieve the zero voltage soft switching of
single-phase or three-phase voltage source inverter using IGBTs for
CVCF/VVVF power applications and utility-interfaced dispersed power
supply. In the first place, the design procedure and design example of
this resonant snubber is schematically described. In the second place,
the comparative feasible studies of the switching power losses analysis,
the power conversion efficiency, the conductive and radiative noises for
AC load side resonant snubber-assisted soft switching inverter treated
here are actually carried out as compared with those data of the generic
voltage source hard switching inverter using IGBTs. The effectiveness of
this resonant snubber is proved on the basis of the experimental results
for voltage source soft switching inverter
Industrial Electronics Society, 2001. IECON '01. The 27th Annual Conference of the IEEE; 02/2001
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ABSTRACT: This paper presents steady-state and transient-state performance
evaluations of active auxiliary resonant commutation snubber
(ARCS)-linked three-phase voltage source soft commutation PFC rectifier
using a software control scheme which can operate under the conditions
of ZVS on all main active power switches in three-phase bridge arm and
ZCS on bi-directional auxiliary active power switches in ARCS. This soft
switching PFC rectifier is discussed as compared with a three phase hand
switching PFC rectifier. The total system performances of
digitally-controlled three phase soft switching PFC rectifier with each
phase ARCS, which implements instantaneous power feedback and DC voltage
feedback control strategies are illustrated and evaluated on the basis
of experimental and simulation results, together with power loss
analysis
Industrial Electronics Society, 2000. IECON 2000. 26th Annual Confjerence of the IEEE; 02/2000
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ABSTRACT: This paper presents a new active resonant snubber assisted
(auxiliary quasi-resonant commutation block-link; ARCB) voltage source
three phase soft switching PWM-PFC rectifier which can operate under a
principle of zero voltage soft switching (ZVS) commutation. The
operating principle and the performances of this digitally-controlled
three phase voltage source soft switching PWM-PFC rectifier are
illustrated and evaluated on the basis of computer aided simulation
analysis
Industrial Electronics Society, 2000. IECON 2000. 26th Annual Confjerence of the IEEE; 02/2000
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ABSTRACT: This paper presents feasible performance of digitally-controlled
three-level three-phase voltage source soft switching inverter with two
auxiliary resonant DC link snubbers which can operate under a condition
of zero voltage switching (ZVS). The operating principle of this
inverter topology which is suitable for a high power energy storage
utilization system is discussed as compared with a two-level soft
switching inverter. The system effectiveness of the new inverter treated
here are proved on the basis of the experimental results
Telecommunication Energy Conference, 1999. INTELEC '99. The 21st International; 07/1999
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ABSTRACT: This paper presents feasible performance of a digitally-controlled
three-level three-phase voltage source-type soft-switching inverter with
two auxiliary resonant DC link snubbers which can operate under
conditions of zero voltage switching (ZVS). The operating principle of
this inverter topology suitable for high power energy storage
utilization system is discussed as compared with the two-level soft
switching inverter. The system effectiveness of the new inverter treated
here is proved on the basis of experimental results
Power Electronics and Drive Systems, 1999. PEDS '99. Proceedings of the IEEE 1999 International Conference on; 02/1999
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ABSTRACT: This paper describes a three-phase voltage source-fed soft switching inverter system with auxiliary resonant AC link snubbers for CVCF application which incorporates by the optimal type-1 servo controller operated on the d-q coordinate frame. In this paper, the steady state and transient-state operating performance of this soft switching inverter and is illustrated and evaluated on the basis of its computer simulation analysis. The circuit design procedure of an active resonant snubber circuit topology on the AC side is illustrated by the simulation results. The effectiveness of this soft switching inverter is proved from a practical point of view
Industrial Electronics Society, 1999. IECON '99 Proceedings. The 25th Annual Conference of the IEEE; 02/1999
