{"title":"Regenerative braking control for light electric vehicles","authors":"Cheng-Hu Chen, W. Chi, M. Cheng","doi":"10.1109/PEDS.2011.6147317","DOIUrl":"https://doi.org/10.1109/PEDS.2011.6147317","url":null,"abstract":"In this paper, a cost effective single stage bidirectional DC/AC converter is designed and implemented using a general full-bridge inverter without any additional power switches or bulky passive components. According to different driving conditions, three switching strategies are developed and analyzed. These switching strategies, which are named after the operating number of the power switches, are called the single-switch, two-switches and three-switches control strategies. Different performance indexes such as boost ratio, maximum voltage conversion ratio, braking torque, etc., are proposed and compared among different switching strategies. Theoretical analysis and experimental results have revealed that the cruising distance, braking torque, and reliability can be improved effectively using a variable braking control strategy according to the driving conditions. Since the additional power switches, passive components and costly position sensors are not required, the proposed method is particularly suitable for various light electric vehicles.","PeriodicalId":166786,"journal":{"name":"2011 IEEE Ninth International Conference on Power Electronics and Drive Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115757689","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}
{"title":"Performance evaluation of a low power solar-PV energy system with SEPIC converter","authors":"N. Adhikari, Bhim Singh, A. Vyas","doi":"10.1109/PEDS.2011.6147339","DOIUrl":"https://doi.org/10.1109/PEDS.2011.6147339","url":null,"abstract":"This paper presents the design and performance of a low power stand-alone solar photovoltaic (PV) energy generating system. The system is designed considering solar-PV panels of 750W to feed an average load demand of 250W for a rural household. The system includes series-parallel combination of solar panels, MPPT (maximum power point tracking) controller, a dc-dc converter, an energy storage system and a single-phase VSI (voltage source inverter). A dc-dc converter is providing a constant dc bus voltage and its duty cycle is controlled by the MPPT controller. A modified incremental conductance approach is utilized for MPPT. In this approach, MPPT controller automatically generates a PWM signal for the dc-dc converter to extract maximum power. To maintain the power quality a feedback control is used in the VSI. The complete system is designed, and modeled to evaluate its performance. Simulated results are presented to demonstrate the performance of the MPPT controller and designed system for varying atmosphere conditions and load disturbances.","PeriodicalId":166786,"journal":{"name":"2011 IEEE Ninth International Conference on Power Electronics and Drive Systems","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124291525","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}
{"title":"Three-phase boost converter with integrated auxiliary step-up circuit for electric vehicle applications","authors":"Ching-Ming Lai, Ming-Ji Yang, Hou-Hsuan Chen","doi":"10.1109/PEDS.2011.6147333","DOIUrl":"https://doi.org/10.1109/PEDS.2011.6147333","url":null,"abstract":"This paper proposes a novel three-phase interleaved high step-up converter suitable for electric vehicle applications. By integrating an auxiliary circuit, the proposed three-phase converter can achieve a higher voltage-boosting ratio than that of the conventional boost converter and possess lower duty cycle, leading to significantly reduced diode reverse recovery, voltage ratings of power devices and energy volumes of most passive components. Besides, interleaved feature of the proposed converter provides the lower input current and output voltage ripples. The operating principle and steady state analysis for the proposed converter are presented and discussed in this paper. Finally, simulation and experimental results of a laboratory prototype are provided to verify the feasibility.","PeriodicalId":166786,"journal":{"name":"2011 IEEE Ninth International Conference on Power Electronics and Drive Systems","volume":"365 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124340785","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}
{"title":"A new DSP-based ZVT photovoltaic energy conversion system","authors":"Yie-Tone Chen, Chi-Jer Lan","doi":"10.1109/PEDS.2011.6147381","DOIUrl":"https://doi.org/10.1109/PEDS.2011.6147381","url":null,"abstract":"This paper proposes two new topologies-zero voltage transition (ZVT) charge and discharge converters applied to the renewable photovoltaic energy conversion system. Aside from the capability of making the maximum power point tracking (MPPT), the main switch also has the capability of ZVT, which could minimize the loss caused by the transition of the switch. Also, the energy transformed from the switch could be transferred to the battery and recharge the battery. The battery could also be recharged and discharged to achieve the energy balance of system. Furthermore, the battery voltage is not needed to be the same as the DC bus voltage in the proposed system. The conversion system therefore has more design flexibility in the choice of the battery voltage and DC bus voltage.","PeriodicalId":166786,"journal":{"name":"2011 IEEE Ninth International Conference on Power Electronics and Drive Systems","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124452494","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}
{"title":"Design and implementation of digital controller using FPGA for 200-kHz PWM inverter","authors":"Shinya Suzuki, K. Wada, Toshihisa Shimizu","doi":"10.1109/PEDS.2011.6147386","DOIUrl":"https://doi.org/10.1109/PEDS.2011.6147386","url":null,"abstract":"This paper presents design procedure of a 200 kHz PWM inverter with a current controller. The switching devices of the inverter consist of Si-MOSFETs and SiC-SBDs, and an FPGA is used for digital control of output current waveforms. The authors have developed an FPGA controller with high-speed and synchronous AD converter. The processing time of FPGA can be ignored because of less than 100 ns, and the time delay of an AD converter could not also be taken into account. A laboratory system rated at 200-kHz PWM inverter is confirmed that the validity of the design procedure from the experimental results. Finally, the experimental results of 10-kHz sinusoidal current control will be shown.","PeriodicalId":166786,"journal":{"name":"2011 IEEE Ninth International Conference on Power Electronics and Drive Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114932921","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}
{"title":"A simple rule-based approach for detection and classification of voltage sag, swell, and interruption in power systems","authors":"Cheng-I Chen, H. Wang, Y. Chin","doi":"10.1109/PEDS.2011.6147338","DOIUrl":"https://doi.org/10.1109/PEDS.2011.6147338","url":null,"abstract":"For the development of smart grid, the effective detection of power quality events is a very important task for the power system monitoring. Voltage sags, interruptions, and voltage swells which usually produce large losses in commercial and industrial consumers are the main events in power systems due to the sensitivity of equipments to these voltage variations. In this paper, a simple rule-based detection method for voltage events by applying the filter bank and adaptive filter is presented. The usefulness of the proposed algorithm is demonstrated by a simple laboratory setup with LabVIEW program and actual recorded waveforms. With the help of accurate detection time of the filter bank and correct event classification of adaptive filter, power system monitoring could provide accurate and useful information to power grids via the developing advanced metering infrastructure.","PeriodicalId":166786,"journal":{"name":"2011 IEEE Ninth International Conference on Power Electronics and Drive Systems","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124816021","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}
{"title":"A flexible dynamic behavior model of inductors to link time domain simulation with empirical loss equations that is instantaneous dB/dt and B(t) dependent for SPICE simulation","authors":"Long-Ching Yeh","doi":"10.1109/PEDS.2011.6147298","DOIUrl":"https://doi.org/10.1109/PEDS.2011.6147298","url":null,"abstract":"A flexible dynamic behavior inductor circuit model that links the time domain simulation with dB/dt and B(t) dependent empirical loss equations is proposed. For the first time, this model automatically detects dB/dt and B(t) and calculates the dynamic resistance value for a resistor that is put in parallel with an inductor whose inductance is also calculated according to its dependency on B(t) and operating frequency, all in a time domain. This circuit model is flexible since one can change the loss formula easily by replacing a “resistor” expression of an ABM (Analog Behavior Model) in the circuit. The circuit model is verified both with sinusoidal and square wave excitations at different frequencies and different excitation levels. The simulated power loss data are compared with experimental data. It shows an excellent match for all the three types of empirical equations tested in this inductor circuit model. However, the impedance behavior is found to be dependent on empirical loss equations. This proposed model is useful for circuit designs that use inductors.","PeriodicalId":166786,"journal":{"name":"2011 IEEE Ninth International Conference on Power Electronics and Drive Systems","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128536308","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}
{"title":"Dynamic model of brushless DC drive using FE method based characteristics","authors":"B. Kerdsup, N. Fuengwarodsakul","doi":"10.1109/PEDS.2011.6147225","DOIUrl":"https://doi.org/10.1109/PEDS.2011.6147225","url":null,"abstract":"In general, a brushless dc (BLDC) motor is modeled by using a trapezoidal waveform as a back electromotive force (E.M.F.). It is a simple model with moderate accuracy. However, when BLDC motor operates in a high speed range where the back E.M.F. plays an important role to the characteristic of the machine, the trapezoidal back E.M.F. could lead to erroneous results. Although the finite element (FE) analysis can be applied for modeling with high accuracy, it takes so much time to simulate one operating point. Moreover, it is complicated and time-consuming to run in the dynamic operations. Therefore, it needs to be optimized between accuracy and time consumption. This paper presents a dynamic simulation model of BLDC motor with more accuracy comparing to the conventional simulation model. It uses the back E.M.F. and inductance which are obtained from the finite element method (FE method). The model was implemented in MATLAB/Simulink and PLECS program. In this work, the outer rotor BLDC motor for electric bicycles was used. The results of simulation model were verified by experiment.","PeriodicalId":166786,"journal":{"name":"2011 IEEE Ninth International Conference on Power Electronics and Drive Systems","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128618709","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}
T. Win, Yusuke Baba, M. Okamoto, E. Hiraki, Toshihiko Tanaka
{"title":"A half-bridge inverter based Active Power Quality Compensator with a DC voltage balancer for electrified railways","authors":"T. Win, Yusuke Baba, M. Okamoto, E. Hiraki, Toshihiko Tanaka","doi":"10.1109/PEDS.2011.6147244","DOIUrl":"https://doi.org/10.1109/PEDS.2011.6147244","url":null,"abstract":"This paper proposes a half-bridge inverter based Active Power Quality Compensator (APQC) with a DC voltage balancer for electrified railways. The APQC is composed of three-leg structured power devices with two common DC capacitors. The first two legs perform as two half-bridge inverters to generate compensation currents and the third-leg is used for DC voltage balancer. The first-leg is connected to α-phase and the second-leg is connected to β-phase. Two DC capacitors are connected in series and midpoint is grounded. These two half-bridge inverters exchange and balance active power for two feeders through two common DC capacitors and compensate reactive and harmonic components of the distorted load currents. The third-leg controls two common DC capacitors to balance voltage level of each other. Using proposed APQC, the primary side of Scott transformer attains balanced and sinusoidal source currents. The principle and control algorithm of proposed a half-bridge inverter based APQC is discussed in detail. The proposed APQC is confirmed by both the PSIM computer simulation software and prototype experiment system. Simulation results show that the proposed APQC can achieve balanced and sinusoidal source currents in secondary side of Scott transformer.","PeriodicalId":166786,"journal":{"name":"2011 IEEE Ninth International Conference on Power Electronics and Drive Systems","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127041233","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}
{"title":"Influence of number of poles, magnet arrangement, and current density on characteristics of inner and outer rotor PMSMs","authors":"Yusuke Tani, S. Morimoto, M. Sanada","doi":"10.1109/PEDS.2011.6147330","DOIUrl":"https://doi.org/10.1109/PEDS.2011.6147330","url":null,"abstract":"Permanent magnet synchronous motors (PMSMs) have been increasingly used in various applications for their small size and high efficiency. There are two major classes of PMSMs. One is the inner rotor type (IR type) PMSM, which has the rotor on the inside and the stator on the outside. The other is the outer rotor type (OR type) PMSM, which has the rotor on the outer side of the stator. In this paper, the characteristics of seven kinds of IR type and OR type motor structures are compared by changing the magnet arrangement, number of poles, and current density.","PeriodicalId":166786,"journal":{"name":"2011 IEEE Ninth International Conference on Power Electronics and Drive Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127370722","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}