A novel design method for CIC-CPPFC circuit has been proposed in this paper. The main contributions are as follows: 1) The principle of CIC-CPPFC circuit has been introduced and a few of significant formulas have been derived to compute the input current, input power and so on; 2) Based on these formulas, the parameters of the CIC-CPPFC can be simply calculated. Therefore, a design procedure and approach have been put forward in this paper; 3) Employing the design results, a prototype for PT converter and electronic ballast has been built up to verify the design method and to show the calculation procedures; The results of simulation and experiment show that CIC-CPPFC could improve the power factor of PT converter and the line current harmonics components meet totally the requirements of IEC 61000-3-2.
{"title":"A novel design method for continuous-input-current charge pump power factor correction circuit","authors":"Weiping Zhang, Rui Zhang, Xiaohan Guan, Zhiyong Sheng","doi":"10.1109/IPEMC.2009.5157469","DOIUrl":"https://doi.org/10.1109/IPEMC.2009.5157469","url":null,"abstract":"A novel design method for CIC-CPPFC circuit has been proposed in this paper. The main contributions are as follows: 1) The principle of CIC-CPPFC circuit has been introduced and a few of significant formulas have been derived to compute the input current, input power and so on; 2) Based on these formulas, the parameters of the CIC-CPPFC can be simply calculated. Therefore, a design procedure and approach have been put forward in this paper; 3) Employing the design results, a prototype for PT converter and electronic ballast has been built up to verify the design method and to show the calculation procedures; The results of simulation and experiment show that CIC-CPPFC could improve the power factor of PT converter and the line current harmonics components meet totally the requirements of IEC 61000-3-2.","PeriodicalId":375971,"journal":{"name":"2009 IEEE 6th International Power Electronics and Motion Control Conference","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115030806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-05-17DOI: 10.1109/IPEMC.2009.5157823
Yan Li, Y. Li
With the increasing concerns for the traditional energy shortage and environment issues, distributed generation (DG) systems based on renewable energy sources (RES) have experienced a fast development in recent years. With more DG units being integrated into the power system, a more recent concept, called microgrid, is developed by grouping a cluster of loads and parallel DG units in a local area. This paper addresses the issue of real and reactive power control for DG units in a low voltage (LV) microgrid during the autonomous islanding operation. The traditional method for power control in parallel DG systems is the frequency and voltage magnitude droop method, which is based on the assumption of a mainly inductive line impedance, and is subject to power control couplings when implemented in a LV microgrid, where the line resistance to reactance ratio (R/X) is high. It is also revealed in this paper that the traditional droop control can lead to stability concerns in a LV microgrid. To achieve accurate and decoupled real and reactive power control and at the same time, to improve the system stability, a virtual frequency-voltage frame control is proposed, where the original voltage and frequency frame is transformed to a virtual frame to realize a completely decoupled relationship between real and reactive power. Details of frame transformation control and small signal stability analysis are presented. Both simulation and experimental results are provided in this paper.
{"title":"Decoupled power control for an inverter based low voltage microgrid in autonomous operation","authors":"Yan Li, Y. Li","doi":"10.1109/IPEMC.2009.5157823","DOIUrl":"https://doi.org/10.1109/IPEMC.2009.5157823","url":null,"abstract":"With the increasing concerns for the traditional energy shortage and environment issues, distributed generation (DG) systems based on renewable energy sources (RES) have experienced a fast development in recent years. With more DG units being integrated into the power system, a more recent concept, called microgrid, is developed by grouping a cluster of loads and parallel DG units in a local area. This paper addresses the issue of real and reactive power control for DG units in a low voltage (LV) microgrid during the autonomous islanding operation. The traditional method for power control in parallel DG systems is the frequency and voltage magnitude droop method, which is based on the assumption of a mainly inductive line impedance, and is subject to power control couplings when implemented in a LV microgrid, where the line resistance to reactance ratio (R/X) is high. It is also revealed in this paper that the traditional droop control can lead to stability concerns in a LV microgrid. To achieve accurate and decoupled real and reactive power control and at the same time, to improve the system stability, a virtual frequency-voltage frame control is proposed, where the original voltage and frequency frame is transformed to a virtual frame to realize a completely decoupled relationship between real and reactive power. Details of frame transformation control and small signal stability analysis are presented. Both simulation and experimental results are provided in this paper.","PeriodicalId":375971,"journal":{"name":"2009 IEEE 6th International Power Electronics and Motion Control Conference","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115331840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-05-17DOI: 10.1109/IPEMC.2009.5157557
Huali Chen, Yunlian Sun, Yan Cheng
Increasing demand for premium electric power, in terms of both quality and reliability, and emerging new energy technologies have led to the development of DG. In the process of connected DG with the power grid, harmonic/inter-harmonic is very serious problem. A new method based on modified MM filter and HHT is proposed to detect harmonic/inter-harmonic caused by the power electric elements. Researched intensively the characteristics of MM transform and MM filter, MM filter is modified aimed at the drawback of selection of structure elements and statistic deflection. HHT is perfectly self-adaptive analysis method. To the signal with harmonic/inter-harmonic, white pulse and positive & negative impulse, firstly, using modified MM filter to remove the white noise, positive & negative impulse and high times harmonic because of its low-passing characteristic, that method's key element is to choosing appropriate SE and its filter effect is better than the wavelet transform. Based on this, using EMD to get a set of IMFs for the denoised signal, the IMFs are almost the single frequency signal. At last, carrying out Hilbert transform to IMFs can get the instantaneous frequency and amplitude of every harmonic/inter-harmonic accurately.
{"title":"Harmonic and inter-harmonic detection of grid-connected distributed generation based on modified mathematical morphology filter and Hilbert-Huang transformation","authors":"Huali Chen, Yunlian Sun, Yan Cheng","doi":"10.1109/IPEMC.2009.5157557","DOIUrl":"https://doi.org/10.1109/IPEMC.2009.5157557","url":null,"abstract":"Increasing demand for premium electric power, in terms of both quality and reliability, and emerging new energy technologies have led to the development of DG. In the process of connected DG with the power grid, harmonic/inter-harmonic is very serious problem. A new method based on modified MM filter and HHT is proposed to detect harmonic/inter-harmonic caused by the power electric elements. Researched intensively the characteristics of MM transform and MM filter, MM filter is modified aimed at the drawback of selection of structure elements and statistic deflection. HHT is perfectly self-adaptive analysis method. To the signal with harmonic/inter-harmonic, white pulse and positive & negative impulse, firstly, using modified MM filter to remove the white noise, positive & negative impulse and high times harmonic because of its low-passing characteristic, that method's key element is to choosing appropriate SE and its filter effect is better than the wavelet transform. Based on this, using EMD to get a set of IMFs for the denoised signal, the IMFs are almost the single frequency signal. At last, carrying out Hilbert transform to IMFs can get the instantaneous frequency and amplitude of every harmonic/inter-harmonic accurately.","PeriodicalId":375971,"journal":{"name":"2009 IEEE 6th International Power Electronics and Motion Control Conference","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116018754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Chinese railways are characterized by a wide range of various locomotive series. Nowadays, 80% of the locomotives driven by electricity run on the most main railroads. Most of the electric locomotives designed by AC-DC traction system till 2003 while DJ1 locomotives manufactured by AC-DC-AC traction system. Power Electronics is one of the pivotal parts of the whole locomotive equipment, playing important roles in power outputting, traction torque releasing, brake dynamic inflicting etc. This paper probes into 3 ages of the power electronics technology used in the electrical locomotives in China. The line-commutated control (thyristor and diodes) and the line-commutated control (thyristor and diodes) in traction and auxiliary system delegates the different age. Problems in system design concerning match of invert and asynchronous traction motor are discussed. Main circuit diagram, power electronics and general technical parameters are presented. At last, The paper gives a comparison of the traction characteristic for the electrical locomotive in different age.
{"title":"Power electronics used in Chinese electric locomotives","authors":"Xianjin Huang, Liwei Zhang, Mingzhi He, X. You, Q. Zheng","doi":"10.1109/IPEMC.2009.5157565","DOIUrl":"https://doi.org/10.1109/IPEMC.2009.5157565","url":null,"abstract":"The Chinese railways are characterized by a wide range of various locomotive series. Nowadays, 80% of the locomotives driven by electricity run on the most main railroads. Most of the electric locomotives designed by AC-DC traction system till 2003 while DJ1 locomotives manufactured by AC-DC-AC traction system. Power Electronics is one of the pivotal parts of the whole locomotive equipment, playing important roles in power outputting, traction torque releasing, brake dynamic inflicting etc. This paper probes into 3 ages of the power electronics technology used in the electrical locomotives in China. The line-commutated control (thyristor and diodes) and the line-commutated control (thyristor and diodes) in traction and auxiliary system delegates the different age. Problems in system design concerning match of invert and asynchronous traction motor are discussed. Main circuit diagram, power electronics and general technical parameters are presented. At last, The paper gives a comparison of the traction characteristic for the electrical locomotive in different age.","PeriodicalId":375971,"journal":{"name":"2009 IEEE 6th International Power Electronics and Motion Control Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122738555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-05-17DOI: 10.1109/IPEMC.2009.5157546
Honglin Zhou, Geng Yang
This paper presents the control methods for large Doubly Fed Induction Generator (DFIG)-based wind farms with hybrid HVDC (High-Voltage dc) connection. The sending end of the hybrid HVDC topology is a Line-Commutated Converter (LCC) with a STATCOM (Static Synchronous Compensator) while the receiving end is a Current Source Inverter (CSI) using forced-commutated devices. The STATCOM provides stator voltage support for DFIGs, as well as commutation voltage for the LCC. Taking into account the nonlinear and coupling characteristics of each subsystem, a series of control schemes are provided. Simulations under both normal and fault conditions are carried out, which verify that, incorporating the advantages of existing LCC-HVDC and VSC (Voltage Source Converter)-HVDC technologies, the proposed system has the black-start capability, and can provide flexible reactive power support to the grid. Moreover it is able to separate the wind farm from the ac fault on the inverter side, thus enhancing the reliability of the overall wind energy system.
{"title":"Control of DFIG-based wind farms with hybrid HVDC connection","authors":"Honglin Zhou, Geng Yang","doi":"10.1109/IPEMC.2009.5157546","DOIUrl":"https://doi.org/10.1109/IPEMC.2009.5157546","url":null,"abstract":"This paper presents the control methods for large Doubly Fed Induction Generator (DFIG)-based wind farms with hybrid HVDC (High-Voltage dc) connection. The sending end of the hybrid HVDC topology is a Line-Commutated Converter (LCC) with a STATCOM (Static Synchronous Compensator) while the receiving end is a Current Source Inverter (CSI) using forced-commutated devices. The STATCOM provides stator voltage support for DFIGs, as well as commutation voltage for the LCC. Taking into account the nonlinear and coupling characteristics of each subsystem, a series of control schemes are provided. Simulations under both normal and fault conditions are carried out, which verify that, incorporating the advantages of existing LCC-HVDC and VSC (Voltage Source Converter)-HVDC technologies, the proposed system has the black-start capability, and can provide flexible reactive power support to the grid. Moreover it is able to separate the wind farm from the ac fault on the inverter side, thus enhancing the reliability of the overall wind energy system.","PeriodicalId":375971,"journal":{"name":"2009 IEEE 6th International Power Electronics and Motion Control Conference","volume":"231 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122775826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-05-17DOI: 10.1109/IPEMC.2009.5157473
H. Sugimura, B. Saha, Soon-Kurl Kwon, S. Hideki, S. Sumiyoshi, H. Omori, M. Nakaoka
This paper presents newly developed half bridge ZVS-PWM high frequency inverter using ZCS-PFC converter conducting full bridge 1 diode. This high-frequency inverter is composed of a passive PFC converter operating at one diode conducting bridge circuit and asymmetrical ZVS-PWM high frequency resonant inverter without the bulky electrolytic capacitor stage for boosted DC voltage smoothing. In addition, this proposed high-frequency resonant inverter has only one diode conducting mode in the diode bridge rectifier with boost inductor. The operating principle of the proposed series load resonant high frequency inverter is described by using the switching mode equivalent circuits in addition to the simulated operating voltage and current waveforms. The circuit parameters of proposed high frequency inverter design to achieve one diode conduction at the same time at diode bridge part by simulation analysis in this paper. The operating performances of this proposed ZVS-PWM high-frequency inverter are also illustrated on the basis of simulation analysis which includes its UFAC-to-HFAC power regulation characteristics, soft switching operating range, UFAC side power factor characteristics and UFAC side line current harmonics characteristics by FFT analysis. In principle, the effectiveness of this UFAC-to-HFAC direct power frequency converter using IGBTs for consumer high-frequency IH appliances is evaluated and proved on the basis of simulation results.
{"title":"A single stage induction heating high frequency series load resonant ZVS-PWM inverter with active filtering pfc rectifier operating at one diode conduction and ZCS commutation","authors":"H. Sugimura, B. Saha, Soon-Kurl Kwon, S. Hideki, S. Sumiyoshi, H. Omori, M. Nakaoka","doi":"10.1109/IPEMC.2009.5157473","DOIUrl":"https://doi.org/10.1109/IPEMC.2009.5157473","url":null,"abstract":"This paper presents newly developed half bridge ZVS-PWM high frequency inverter using ZCS-PFC converter conducting full bridge 1 diode. This high-frequency inverter is composed of a passive PFC converter operating at one diode conducting bridge circuit and asymmetrical ZVS-PWM high frequency resonant inverter without the bulky electrolytic capacitor stage for boosted DC voltage smoothing. In addition, this proposed high-frequency resonant inverter has only one diode conducting mode in the diode bridge rectifier with boost inductor. The operating principle of the proposed series load resonant high frequency inverter is described by using the switching mode equivalent circuits in addition to the simulated operating voltage and current waveforms. The circuit parameters of proposed high frequency inverter design to achieve one diode conduction at the same time at diode bridge part by simulation analysis in this paper. The operating performances of this proposed ZVS-PWM high-frequency inverter are also illustrated on the basis of simulation analysis which includes its UFAC-to-HFAC power regulation characteristics, soft switching operating range, UFAC side power factor characteristics and UFAC side line current harmonics characteristics by FFT analysis. In principle, the effectiveness of this UFAC-to-HFAC direct power frequency converter using IGBTs for consumer high-frequency IH appliances is evaluated and proved on the basis of simulation results.","PeriodicalId":375971,"journal":{"name":"2009 IEEE 6th International Power Electronics and Motion Control Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122995240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-05-17DOI: 10.1109/IPEMC.2009.5157724
Dehong Zhu, Xin Cheng, Huangqiu Zhu
In the paper, an innovated AC-DC 3 degrees of freedom active magnetic bearing (AC-DC-3DOF-AMB) is proposed, which is driven by a DC amplifier in axial direction and a 3-phase power converter in radial directions, respectively. The principle of producing magnetic suspension forces for the AC-DC-3DOF-AMB is introduced. The flux path of the AC-DC-3DOF-AMB is calculated by using equivalent magnetic circuit method, the mathematics models of magnetic suspension forces are deduced, and the experimental prototype of this novel bearing is designed. The flux path and magnetic suspension forces of the rotor are verified by finite element analysis software ANSOFT. The nonlinearity of magnetic suspension forces and the coupling characteristics of movement and electromagnetic couplings around the balanceable position are calculated and analyzed by MATLAB software. The theoretical research and simulation results have shown that the mechanical structure and flux path of this AC-DC-3DOF-AMB are reasonable, and the maximum suspension magnetic forces satisfies design requirement. The magnetic suspension forces have better linearity and symmetry around the balanceable position. There are almost no movement and electromagnetic couplings among 3 degrees freedom of this magnetic bearing.
{"title":"Structure and performance analysis for AC-DC three degrees of freedom active magnetic bearings","authors":"Dehong Zhu, Xin Cheng, Huangqiu Zhu","doi":"10.1109/IPEMC.2009.5157724","DOIUrl":"https://doi.org/10.1109/IPEMC.2009.5157724","url":null,"abstract":"In the paper, an innovated AC-DC 3 degrees of freedom active magnetic bearing (AC-DC-3DOF-AMB) is proposed, which is driven by a DC amplifier in axial direction and a 3-phase power converter in radial directions, respectively. The principle of producing magnetic suspension forces for the AC-DC-3DOF-AMB is introduced. The flux path of the AC-DC-3DOF-AMB is calculated by using equivalent magnetic circuit method, the mathematics models of magnetic suspension forces are deduced, and the experimental prototype of this novel bearing is designed. The flux path and magnetic suspension forces of the rotor are verified by finite element analysis software ANSOFT. The nonlinearity of magnetic suspension forces and the coupling characteristics of movement and electromagnetic couplings around the balanceable position are calculated and analyzed by MATLAB software. The theoretical research and simulation results have shown that the mechanical structure and flux path of this AC-DC-3DOF-AMB are reasonable, and the maximum suspension magnetic forces satisfies design requirement. The magnetic suspension forces have better linearity and symmetry around the balanceable position. There are almost no movement and electromagnetic couplings among 3 degrees freedom of this magnetic bearing.","PeriodicalId":375971,"journal":{"name":"2009 IEEE 6th International Power Electronics and Motion Control Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123010513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-05-17DOI: 10.1109/IPEMC.2009.5157661
P. Mao, Shaojun Xie, A. Xu, Zegang Xu
A new equivalent input circuit of one-cycle-controlled (OCC)PFC converter is built, based on which, the current phase lag issue especially outstanding at low ratio of switching frequency to line frequency is analyzed, and a novel current phase lag compensation scheme by controlling the voltage across the switch is proposed to reduce the phase lag of line current relative to line voltage. Implementation method of the compensation scheme with digital control is introduced, and a design example is given. The stability of the system using the compensation scheme is verified by frequency-domain analysis. The newly built equivalent input circuit can more preciously reflect input characteristics of the OCC PFC converter, and the proposed compensation scheme can reduce the current phase lag, and increase the displacement power factor, which has been verified by experimental results.
{"title":"Current phase lag issue and the compensation scheme for OCC PFC converter","authors":"P. Mao, Shaojun Xie, A. Xu, Zegang Xu","doi":"10.1109/IPEMC.2009.5157661","DOIUrl":"https://doi.org/10.1109/IPEMC.2009.5157661","url":null,"abstract":"A new equivalent input circuit of one-cycle-controlled (OCC)PFC converter is built, based on which, the current phase lag issue especially outstanding at low ratio of switching frequency to line frequency is analyzed, and a novel current phase lag compensation scheme by controlling the voltage across the switch is proposed to reduce the phase lag of line current relative to line voltage. Implementation method of the compensation scheme with digital control is introduced, and a design example is given. The stability of the system using the compensation scheme is verified by frequency-domain analysis. The newly built equivalent input circuit can more preciously reflect input characteristics of the OCC PFC converter, and the proposed compensation scheme can reduce the current phase lag, and increase the displacement power factor, which has been verified by experimental results.","PeriodicalId":375971,"journal":{"name":"2009 IEEE 6th International Power Electronics and Motion Control Conference","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114140592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-05-17DOI: 10.1109/IPEMC.2009.5157800
Xiaofeng Sun, Ningning Li, Baocheng Wang, Xin Li
The Active Power Filter harmonic compensation system based on supply-side current detection method, because of its closed-loop in essence would have a certain suppression for phase delay and resonance of the system, but closed-loop gain too great will lead instability of the system, which not only influence the effect of harmonic compensation, but also lose the aforementioned advantage. Previous papers enhanced stability margin so as to increase loop gain by adding phase lead correction to the system, however, the improvement of compensation effect is limited. The reasons for hindering further improve of the effectiveness compensation is found out and which is improved in this paper, its effectiveness is verified by the results of experiment.
{"title":"Improvement for the closed-loop control of shunt Active Power Filter","authors":"Xiaofeng Sun, Ningning Li, Baocheng Wang, Xin Li","doi":"10.1109/IPEMC.2009.5157800","DOIUrl":"https://doi.org/10.1109/IPEMC.2009.5157800","url":null,"abstract":"The Active Power Filter harmonic compensation system based on supply-side current detection method, because of its closed-loop in essence would have a certain suppression for phase delay and resonance of the system, but closed-loop gain too great will lead instability of the system, which not only influence the effect of harmonic compensation, but also lose the aforementioned advantage. Previous papers enhanced stability margin so as to increase loop gain by adding phase lead correction to the system, however, the improvement of compensation effect is limited. The reasons for hindering further improve of the effectiveness compensation is found out and which is improved in this paper, its effectiveness is verified by the results of experiment.","PeriodicalId":375971,"journal":{"name":"2009 IEEE 6th International Power Electronics and Motion Control Conference","volume":"2676 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114188998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-05-17DOI: 10.1109/IPEMC.2009.5157582
Ping Rong, Wei Chen, Zheng-yu Lu
In this paper, A novel ZVZCS active clamped dual switch flyback converter was proposed, whose main switches and auxiliary switch all realize zero-voltage turning-on, and the rectifier diode on the secondary side also achieves ZCS. It overcomes the demerit of high voltage stress on the main switch in conventional flyback converter; meanwhile the duty circle can extend to more than 50% by slope compensation. Thus it is favorable for high efficiency, wide input range capacity and suited for the high input voltage occasions. In addition, the converter makes full use of leakage inductor energy, no extra snubber is needed. The detailed operation principles, characteristics and design principles were presented, then a prototype with 127V∼330Vdc input, 5A/18.5V output verified the validity and applicability of the proposed active clamped dual switch flyback converter.
{"title":"A novel active clamped dual switch flyback converter","authors":"Ping Rong, Wei Chen, Zheng-yu Lu","doi":"10.1109/IPEMC.2009.5157582","DOIUrl":"https://doi.org/10.1109/IPEMC.2009.5157582","url":null,"abstract":"In this paper, A novel ZVZCS active clamped dual switch flyback converter was proposed, whose main switches and auxiliary switch all realize zero-voltage turning-on, and the rectifier diode on the secondary side also achieves ZCS. It overcomes the demerit of high voltage stress on the main switch in conventional flyback converter; meanwhile the duty circle can extend to more than 50% by slope compensation. Thus it is favorable for high efficiency, wide input range capacity and suited for the high input voltage occasions. In addition, the converter makes full use of leakage inductor energy, no extra snubber is needed. The detailed operation principles, characteristics and design principles were presented, then a prototype with 127V∼330Vdc input, 5A/18.5V output verified the validity and applicability of the proposed active clamped dual switch flyback converter.","PeriodicalId":375971,"journal":{"name":"2009 IEEE 6th International Power Electronics and Motion Control Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121891427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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