Pub Date : 2017-12-01DOI: 10.1109/ITEC-INDIA.2017.8356953
Yash Sukhatme, J. Titus, Parthasarathy Nayak, K. Hatua
SiC MOSFETs are characterized by fast switching speeds typically in the range of 50-60 ns. However, the parasitic MOSFET capacitance and load parasitic capacitance form a resonant LC network with the layout parasitic inductance which causes unwanted overshoot and oscillations in the device voltage and current. This increases the losses in the converter and limits the maximum frequency of operation. Using an Active Gate Driver to reduce the ringing and oscillations definitely has its advantages and is widely reported in literature. However, in some of the AGD techniques the timing constraints on the controller are too restrictive and it is practically difficult to implement such fast control algorithms for a SiC MOSFET. This paper tries to address this issue by proposing an open loop AGD. The proposed method essentially sets the timing intervals of the stages apriori thereby eliminating the restrictive timing constraints on the controller.The proposed method has been tested on a two level VSI, switching at 100 kHz, running a 15 kW induction motor from a 400 V DC bus. The performance of the proposed technique as well as the operation are discussed in this paper. The test results reveal dominant dead time effects in the motor line current when the inverter is switching at 100 kHz, which generally are not observed in IGBT based drives where the IGBT switching frequency is less than 10 kHz. The reason for the dead time effects is investigated and appropriate compensation is carried out.
SiC mosfet的特点是开关速度快，通常在50-60 ns的范围内。然而，寄生MOSFET电容和负载寄生电容与布局寄生电感形成谐振LC网络，导致器件电压和电流出现不必要的超调和振荡。这增加了转换器的损耗并限制了最大工作频率。使用有源栅极驱动器来减少振铃和振荡肯定有其优点，并在文献中被广泛报道。然而，在一些AGD技术中，控制器上的时序约束过于严格，实际上很难实现这种SiC MOSFET快速控制算法。本文试图通过提出一个开环AGD来解决这个问题。所提出的方法本质上是先验地设置各阶段的时序间隔，从而消除对控制器的限制性时序约束。所提出的方法已经在一个两电平VSI上进行了测试，开关在100 kHz，运行一个来自400 V直流母线的15 kW感应电机。本文讨论了该技术的性能和操作。测试结果显示，当逆变器开关频率为100khz时，电机线路电流中的死区时间效应占主导地位，而在IGBT开关频率小于10khz的基于IGBT的驱动器中通常不会观察到这种效应。分析了产生死区效应的原因，并进行了相应的补偿。
{"title":"Digitally controlled active gate driver for SiC MOSFET based induction motor drive switching at 100 kHz","authors":"Yash Sukhatme, J. Titus, Parthasarathy Nayak, K. Hatua","doi":"10.1109/ITEC-INDIA.2017.8356953","DOIUrl":"https://doi.org/10.1109/ITEC-INDIA.2017.8356953","url":null,"abstract":"SiC MOSFETs are characterized by fast switching speeds typically in the range of 50-60 ns. However, the parasitic MOSFET capacitance and load parasitic capacitance form a resonant LC network with the layout parasitic inductance which causes unwanted overshoot and oscillations in the device voltage and current. This increases the losses in the converter and limits the maximum frequency of operation. Using an Active Gate Driver to reduce the ringing and oscillations definitely has its advantages and is widely reported in literature. However, in some of the AGD techniques the timing constraints on the controller are too restrictive and it is practically difficult to implement such fast control algorithms for a SiC MOSFET. This paper tries to address this issue by proposing an open loop AGD. The proposed method essentially sets the timing intervals of the stages apriori thereby eliminating the restrictive timing constraints on the controller.The proposed method has been tested on a two level VSI, switching at 100 kHz, running a 15 kW induction motor from a 400 V DC bus. The performance of the proposed technique as well as the operation are discussed in this paper. The test results reveal dominant dead time effects in the motor line current when the inverter is switching at 100 kHz, which generally are not observed in IGBT based drives where the IGBT switching frequency is less than 10 kHz. The reason for the dead time effects is investigated and appropriate compensation is carried out.","PeriodicalId":312418,"journal":{"name":"2017 IEEE Transportation Electrification Conference (ITEC-India)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133098530","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 : 2017-12-01DOI: 10.1109/ITEC-INDIA.2017.8356956
Vinod Kumar Bussa, R. Singh, R. Mahanty
This paper proposes an improved L-Z-source inverter (L-ZSI), which is derived from L-ZSI with addition of two switching devices, one diode and one capacitor. The improved LZSI gives higher boost ability at low shoot-through duty region compared to the L-ZSI and overcome the limitations of L-ZSI. Another advantage of the proposed inverter is its expandability as same as L-ZSI. To achieve higher boosting rate further at low shoot-through region, additional cells (three diodes and one inductor) can easily cascaded at the switched-inductor cell. A 100 W laboratory prototype is developed to validate the performance of the proposed inverter simulations are shown to verify the expandability of proposed inverter.
{"title":"Extendable multicell improved L-Z-source inverter","authors":"Vinod Kumar Bussa, R. Singh, R. Mahanty","doi":"10.1109/ITEC-INDIA.2017.8356956","DOIUrl":"https://doi.org/10.1109/ITEC-INDIA.2017.8356956","url":null,"abstract":"This paper proposes an improved L-Z-source inverter (L-ZSI), which is derived from L-ZSI with addition of two switching devices, one diode and one capacitor. The improved LZSI gives higher boost ability at low shoot-through duty region compared to the L-ZSI and overcome the limitations of L-ZSI. Another advantage of the proposed inverter is its expandability as same as L-ZSI. To achieve higher boosting rate further at low shoot-through region, additional cells (three diodes and one inductor) can easily cascaded at the switched-inductor cell. A 100 W laboratory prototype is developed to validate the performance of the proposed inverter simulations are shown to verify the expandability of proposed inverter.","PeriodicalId":312418,"journal":{"name":"2017 IEEE Transportation Electrification Conference (ITEC-India)","volume":"259 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123086623","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 : 2017-12-01DOI: 10.1109/ITEC-INDIA.2017.8333871
S. R. Gurumurthy, V. Agarwal, V. Srinath
Applications such as Electromagnetic aircraft launch system, Electromagnetic guns, Integrated flight through power system, Electromagnetic welding etc. require dc power source which is need to supply large power to the load though for short duration. Usually charged capacitors are used as the power source. Hence there is a need for the Capacitor Charging Power Supply (CCPS). This requires high rated switchgears and power semiconductors devices at the input circuitry even though the average power drawn from the mains is low. To avoid high rated power components at input circuitry, an Intermediate Energy Storage (IES) device can be used which stores energy (drawing low power from input mains) for longer duration and deliver same to the load in shorter time (delivering higher power). One CCPS has been conceived, designed and built using a Flywheel as an IES device. Design guidelines, simulation and testing results of the system built are presented in this paper.
{"title":"Compact and modular solid state controlled flywheel based capacitor charging power supply","authors":"S. R. Gurumurthy, V. Agarwal, V. Srinath","doi":"10.1109/ITEC-INDIA.2017.8333871","DOIUrl":"https://doi.org/10.1109/ITEC-INDIA.2017.8333871","url":null,"abstract":"Applications such as Electromagnetic aircraft launch system, Electromagnetic guns, Integrated flight through power system, Electromagnetic welding etc. require dc power source which is need to supply large power to the load though for short duration. Usually charged capacitors are used as the power source. Hence there is a need for the Capacitor Charging Power Supply (CCPS). This requires high rated switchgears and power semiconductors devices at the input circuitry even though the average power drawn from the mains is low. To avoid high rated power components at input circuitry, an Intermediate Energy Storage (IES) device can be used which stores energy (drawing low power from input mains) for longer duration and deliver same to the load in shorter time (delivering higher power). One CCPS has been conceived, designed and built using a Flywheel as an IES device. Design guidelines, simulation and testing results of the system built are presented in this paper.","PeriodicalId":312418,"journal":{"name":"2017 IEEE Transportation Electrification Conference (ITEC-India)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127999479","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 : 2017-12-01DOI: 10.1109/ITEC-INDIA.2017.8333720
S. Gupta, R. Srivastava
This paper discusses voltage regulation (VR) of PMSG for a wind energy conversion system (WECS) under varying wind conditions. Mechanical flux-variation technique (MFV) has been used for VR of a kaman-type dual-stator axial-flux PMSG at above rated rotor/wind speed extending the speedrange of generator. An experimental test-bed has been set up to implement MFV in the generator and subsequently, the implications of proposed technique on the performance of generator has been analyzed. Total harmonic injected in generator output due to proposed technique has been calculated by FFT analysis and compared for two types namely, sinusoidal and trapezoidal back-emf characteristics.
{"title":"Comparison of variable-flux PMSG for extended speed-range based on magnet arc-length to pole-pitch ratio","authors":"S. Gupta, R. Srivastava","doi":"10.1109/ITEC-INDIA.2017.8333720","DOIUrl":"https://doi.org/10.1109/ITEC-INDIA.2017.8333720","url":null,"abstract":"This paper discusses voltage regulation (VR) of PMSG for a wind energy conversion system (WECS) under varying wind conditions. Mechanical flux-variation technique (MFV) has been used for VR of a kaman-type dual-stator axial-flux PMSG at above rated rotor/wind speed extending the speedrange of generator. An experimental test-bed has been set up to implement MFV in the generator and subsequently, the implications of proposed technique on the performance of generator has been analyzed. Total harmonic injected in generator output due to proposed technique has been calculated by FFT analysis and compared for two types namely, sinusoidal and trapezoidal back-emf characteristics.","PeriodicalId":312418,"journal":{"name":"2017 IEEE Transportation Electrification Conference (ITEC-India)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117154366","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 : 2017-12-01DOI: 10.1109/ITEC-INDIA.2017.8356947
Aditya Narula, V. Verma
The bidirectional power conversion with simple and unified bidirectional control, modular architecture, low common mode currents, low ripple, effective use of storage element and low voltage stress on the switches are some of the important features requisite for Vehicle to Grid (V2G) and Grid to vehicle (G2V) interface for Electric Vehicle (EV). This paper proposes a new approach to circuit configuration of the converter for incorporating all the aforementioned bottlenecks to realize a robust converter for both V2G and G2V interface with LVDC grid. The proposed topology employs a simple and unified bidirectional control algorithm capable of smartly charging (G2V)/discharging (V2G) the battery stacks with customized rates depending on the SoC’s of battery stacks with negligible common mode currents. The control scheme automatically drives the converter to use the Trans-Z impedance network the moment higher gain is requisite during low charge conditions of batteries or any transients on the LVDC grid. The proposed modular bidirectional converter is tested through rigorous simulation to affirm high efficiency operations over a broad range of duty cycle.
{"title":"Bi – directional trans – Z source boost converter for G2V/V2G applications","authors":"Aditya Narula, V. Verma","doi":"10.1109/ITEC-INDIA.2017.8356947","DOIUrl":"https://doi.org/10.1109/ITEC-INDIA.2017.8356947","url":null,"abstract":"The bidirectional power conversion with simple and unified bidirectional control, modular architecture, low common mode currents, low ripple, effective use of storage element and low voltage stress on the switches are some of the important features requisite for Vehicle to Grid (V2G) and Grid to vehicle (G2V) interface for Electric Vehicle (EV). This paper proposes a new approach to circuit configuration of the converter for incorporating all the aforementioned bottlenecks to realize a robust converter for both V2G and G2V interface with LVDC grid. The proposed topology employs a simple and unified bidirectional control algorithm capable of smartly charging (G2V)/discharging (V2G) the battery stacks with customized rates depending on the SoC’s of battery stacks with negligible common mode currents. The control scheme automatically drives the converter to use the Trans-Z impedance network the moment higher gain is requisite during low charge conditions of batteries or any transients on the LVDC grid. The proposed modular bidirectional converter is tested through rigorous simulation to affirm high efficiency operations over a broad range of duty cycle.","PeriodicalId":312418,"journal":{"name":"2017 IEEE Transportation Electrification Conference (ITEC-India)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114877124","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 : 2017-12-01DOI: 10.1109/ITEC-INDIA.2017.8333838
A. Verma, Bhim Singh
In this paper, a three phase off-board charger is proposed that has a bi-directional flow of active power. The charger uses both solar photo voltaic (PV) array and grid energy to charge the electric vehicle (EV) battery. Moreover, the charger also feeds the solar PV array and battery energy into the grid. To achieve this, the charger has a provision to act as a standalone generator to generate the sinusoidal voltage of reference amplitude and frequency. In case of grid outage, unavailability of solar PV generation, the charger feeds household loads. It acts as an uninterruptible power supply (UPS) and has the capability to synchronize with the grid voltage on grid restoration and maintains the uninterruptible power supply to the load. While feeding the nonlinear loads an improved linear sinusoidal tracer (ILST) algorithm is used to estimate the fundamental current component of load current, so that the current drawn from the grid is always sinusoidal and at unity power factor (UPF). The controller is designed to extract the maximum power in all operating conditions. Moreover, the controller is designed such that it takes the decision of power flow among the different energy sources based on the demand. The charger is designed for a three phase 230V (rms) line, 50 Hz supply. The charger performance is analyzed in various dynamic conditions.
{"title":"Multi-objective reconfigurable three phase off-board charger for EV","authors":"A. Verma, Bhim Singh","doi":"10.1109/ITEC-INDIA.2017.8333838","DOIUrl":"https://doi.org/10.1109/ITEC-INDIA.2017.8333838","url":null,"abstract":"In this paper, a three phase off-board charger is proposed that has a bi-directional flow of active power. The charger uses both solar photo voltaic (PV) array and grid energy to charge the electric vehicle (EV) battery. Moreover, the charger also feeds the solar PV array and battery energy into the grid. To achieve this, the charger has a provision to act as a standalone generator to generate the sinusoidal voltage of reference amplitude and frequency. In case of grid outage, unavailability of solar PV generation, the charger feeds household loads. It acts as an uninterruptible power supply (UPS) and has the capability to synchronize with the grid voltage on grid restoration and maintains the uninterruptible power supply to the load. While feeding the nonlinear loads an improved linear sinusoidal tracer (ILST) algorithm is used to estimate the fundamental current component of load current, so that the current drawn from the grid is always sinusoidal and at unity power factor (UPF). The controller is designed to extract the maximum power in all operating conditions. Moreover, the controller is designed such that it takes the decision of power flow among the different energy sources based on the demand. The charger is designed for a three phase 230V (rms) line, 50 Hz supply. The charger performance is analyzed in various dynamic conditions.","PeriodicalId":312418,"journal":{"name":"2017 IEEE Transportation Electrification Conference (ITEC-India)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115107055","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 : 2017-12-01DOI: 10.1109/itec-india.2017.8333872
A. P. Singh, P. Sharma, D. Wadhwani, Vivek Rai, V. Sharma
The need for hybrid vehicles is growing day by day. The hybrid vehicles are boon for the environment; as internal combustion engines are leading to the unhealthy environment. The biggest problem with the hybrid vehicles is the need of sources to charge batteries for the better run time. The research elucidates the use of thermal electric transducers to convert thermal energy attained by the vehicles to charge batteries. The heat is attained with the help of graphene and steel coils from heat developed at the radiator, exhaust system and brakes which provides 1.5KW energy.
{"title":"Attribution of engine thermal energy for battery management","authors":"A. P. Singh, P. Sharma, D. Wadhwani, Vivek Rai, V. Sharma","doi":"10.1109/itec-india.2017.8333872","DOIUrl":"https://doi.org/10.1109/itec-india.2017.8333872","url":null,"abstract":"The need for hybrid vehicles is growing day by day. The hybrid vehicles are boon for the environment; as internal combustion engines are leading to the unhealthy environment. The biggest problem with the hybrid vehicles is the need of sources to charge batteries for the better run time. The research elucidates the use of thermal electric transducers to convert thermal energy attained by the vehicles to charge batteries. The heat is attained with the help of graphene and steel coils from heat developed at the radiator, exhaust system and brakes which provides 1.5KW energy.","PeriodicalId":312418,"journal":{"name":"2017 IEEE Transportation Electrification Conference (ITEC-India)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126376892","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 : 2017-12-01DOI: 10.1109/ITEC-INDIA.2017.8333886
Gargi Pancholi, D. K. Yadav, L. Chaturvedi
This paper shows very reliable, extended range power supply for an electric vehicle. The power sources present are solar PV source, a battery and an Ultra capacitor (UC) [1]. Vehicles operated only on battery oriented systems faces issues of charging, discharging of battery rapidly. To decrease these impacts on battery, it will consolidate with ultracapacitor. The advantages of this setup include better acceleration performance, longer driving range, controlled regenerative braking, smaller battery pack and longer battery life. The work introduce in this paper tries to minimize the stresses on battery, present during periods of acceleration and braking of three phase induction motor drive. Bidirectional DC-DC converters are used for the proper flow of power to motor during various stages of driving cycle. The THD values are also get reduce up to great level with this framework.
{"title":"Energy management strategies for hybrid electric vehicle using PV, ultracapacitor and battery","authors":"Gargi Pancholi, D. K. Yadav, L. Chaturvedi","doi":"10.1109/ITEC-INDIA.2017.8333886","DOIUrl":"https://doi.org/10.1109/ITEC-INDIA.2017.8333886","url":null,"abstract":"This paper shows very reliable, extended range power supply for an electric vehicle. The power sources present are solar PV source, a battery and an Ultra capacitor (UC) [1]. Vehicles operated only on battery oriented systems faces issues of charging, discharging of battery rapidly. To decrease these impacts on battery, it will consolidate with ultracapacitor. The advantages of this setup include better acceleration performance, longer driving range, controlled regenerative braking, smaller battery pack and longer battery life. The work introduce in this paper tries to minimize the stresses on battery, present during periods of acceleration and braking of three phase induction motor drive. Bidirectional DC-DC converters are used for the proper flow of power to motor during various stages of driving cycle. The THD values are also get reduce up to great level with this framework.","PeriodicalId":312418,"journal":{"name":"2017 IEEE Transportation Electrification Conference (ITEC-India)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126383356","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 : 2017-12-01DOI: 10.1109/ITEC-INDIA.2017.8356959
S. P, R. Kalpana, Bhim Singh, G. Bhuvaneswari
This paper highlights the power quality issues and explains the remedial measures taken by means of hybrid frontend third harmonic current injection rectifiers. Here zig-zag transformer is used as the current injection device so that the advantages pertaining to zig-zag transformer is utilized effectively. The third harmonic current injection device along with the three-level boost converter at the output stage will increase the dc-link voltage. Also, the power quality is well improved using third harmonic current modulated front-end structure which is well appropriate to medium/higher power applications. The experimental prototype of hybrid front-end PFC rectifier is developed in the laboratory to validate the MATLAB simulation results.
{"title":"Power quality improvement in front-end hybrid AC-DC converter based on current injection technique","authors":"S. P, R. Kalpana, Bhim Singh, G. Bhuvaneswari","doi":"10.1109/ITEC-INDIA.2017.8356959","DOIUrl":"https://doi.org/10.1109/ITEC-INDIA.2017.8356959","url":null,"abstract":"This paper highlights the power quality issues and explains the remedial measures taken by means of hybrid frontend third harmonic current injection rectifiers. Here zig-zag transformer is used as the current injection device so that the advantages pertaining to zig-zag transformer is utilized effectively. The third harmonic current injection device along with the three-level boost converter at the output stage will increase the dc-link voltage. Also, the power quality is well improved using third harmonic current modulated front-end structure which is well appropriate to medium/higher power applications. The experimental prototype of hybrid front-end PFC rectifier is developed in the laboratory to validate the MATLAB simulation results.","PeriodicalId":312418,"journal":{"name":"2017 IEEE Transportation Electrification Conference (ITEC-India)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123728658","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 : 2017-12-01DOI: 10.1109/ITEC-INDIA.2017.8333719
Sandeep V. Nair, K. Hatua, N. D. Prasad, D. K. Reddy
A new technique for change over from I-f method for starting to emf based sensorless vector control for normal operation of a PMSM drive is discussed in this paper. In I-f method, stator frequency is ramped up in a limited current operation. The sensorless control is implemented using a modified stator voltage integration method. When the machine picks up enough speed with I-f starting, a smooth transition to sensorless mode is performed with the proposed "Pulse turn-off method". Rotor position required for the transition is estimated by measuring the terminal voltage of the motor, which would be same as the back emf when the inverter switching pulses are off. The proposed method is validated experimentally.
{"title":"Pulse turn-off method for starting of PMSM drive using back-emf position estimation technique","authors":"Sandeep V. Nair, K. Hatua, N. D. Prasad, D. K. Reddy","doi":"10.1109/ITEC-INDIA.2017.8333719","DOIUrl":"https://doi.org/10.1109/ITEC-INDIA.2017.8333719","url":null,"abstract":"A new technique for change over from I-f method for starting to emf based sensorless vector control for normal operation of a PMSM drive is discussed in this paper. In I-f method, stator frequency is ramped up in a limited current operation. The sensorless control is implemented using a modified stator voltage integration method. When the machine picks up enough speed with I-f starting, a smooth transition to sensorless mode is performed with the proposed \"Pulse turn-off method\". Rotor position required for the transition is estimated by measuring the terminal voltage of the motor, which would be same as the back emf when the inverter switching pulses are off. The proposed method is validated experimentally.","PeriodicalId":312418,"journal":{"name":"2017 IEEE Transportation Electrification Conference (ITEC-India)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125006437","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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