基于PWM控制的推挽式DC-DC直流升压电路的系统结构,设计了一款2 k W大功率直流升压变换器。该推挽拓扑结构采用2组高频变压器并联的升压方式,用1组驱动信号同时驱动2个开关管,转换效率高,对器件的参数要求不高。最后研制出了额定直流48 ...基于PWM控制的推挽式DC-DC直流升压电路的系统结构,设计了一款2 k W大功率直流升压变换器。该推挽拓扑结构采用2组高频变压器并联的升压方式,用1组驱动信号同时驱动2个开关管,转换效率高,对器件的参数要求不高。最后研制出了额定直流48 V输入,直流310 V输出,2 k W功率的DC/DC变换器。通过实验证明该变换器具有较高的效率与实用价值。展开更多
This paper explains step-by-step modeling and simulation of the full circuits of a battery control system and connected together starting from the AC input source to the battery control and storage system.The three-ph...This paper explains step-by-step modeling and simulation of the full circuits of a battery control system and connected together starting from the AC input source to the battery control and storage system.The three-phase half-controlled rectifier has been designed to control and convert the AC power into DC power.In addition,two types of direct current converters have been used in this paper which are a buck and bidirectional DC/DC converters.These systems adjust the output voltage to be lower or higher than the input voltage.In the buck converters,the main switch operates in conduction or cut-off mode and is triggered by a Pulse-Width Modulated(PWM)signal.The output and input voltage levels ratio are used to calculate thePWMsignal’s duty cycle.Therefore,the duty cycle indicates the operation mode of the converter in steady-state operation.In this study,we analyze and control of a buck converter with the PWM signal.Besides,the bidirectional DC/DC converter has been achieved and optimized by PI control methods to control the battery charging and discharging modes.The simulation has been applied via the Matlab/Simulink environment.The results show the activity of each part of the designed circuits starting from the converters and the battery control system in charge and discharge modes.展开更多
This article studies a design and implementation of state-feedback control problem for dc-dc Positive Output Super Lift Luo (POSLL) converter by considering the line and load disturbances for needing desired power sou...This article studies a design and implementation of state-feedback control problem for dc-dc Positive Output Super Lift Luo (POSLL) converter by considering the line and load disturbances for needing desired power source for various portable electronic equipments like battery charger, hard disk drives, medical device, LED TV etc. The POSLL’s dynamic performance becomes non-linear in nature;the designed controller able to get superior dynamic performance given by load estimation is done by using an observer and by combining the state-feedback control with the load estimator, a controller which is explicitly developed with strong robustness using separation principle. An effectual stability analysis is exemplified to prove that by carefully selecting the state feedback control and observer gain matrix, the output voltage of the dc-dc POSLL converter tracks the desired value irrespective of the uncertainties. Extensive simulation is carried out using MATLAB/Simulink model. The result based on time domain analysis is done by using the controllers for various disturbances given to the converter.展开更多
文摘基于PWM控制的推挽式DC-DC直流升压电路的系统结构,设计了一款2 k W大功率直流升压变换器。该推挽拓扑结构采用2组高频变压器并联的升压方式,用1组驱动信号同时驱动2个开关管,转换效率高,对器件的参数要求不高。最后研制出了额定直流48 V输入,直流310 V输出,2 k W功率的DC/DC变换器。通过实验证明该变换器具有较高的效率与实用价值。
文摘This paper explains step-by-step modeling and simulation of the full circuits of a battery control system and connected together starting from the AC input source to the battery control and storage system.The three-phase half-controlled rectifier has been designed to control and convert the AC power into DC power.In addition,two types of direct current converters have been used in this paper which are a buck and bidirectional DC/DC converters.These systems adjust the output voltage to be lower or higher than the input voltage.In the buck converters,the main switch operates in conduction or cut-off mode and is triggered by a Pulse-Width Modulated(PWM)signal.The output and input voltage levels ratio are used to calculate thePWMsignal’s duty cycle.Therefore,the duty cycle indicates the operation mode of the converter in steady-state operation.In this study,we analyze and control of a buck converter with the PWM signal.Besides,the bidirectional DC/DC converter has been achieved and optimized by PI control methods to control the battery charging and discharging modes.The simulation has been applied via the Matlab/Simulink environment.The results show the activity of each part of the designed circuits starting from the converters and the battery control system in charge and discharge modes.
文摘This article studies a design and implementation of state-feedback control problem for dc-dc Positive Output Super Lift Luo (POSLL) converter by considering the line and load disturbances for needing desired power source for various portable electronic equipments like battery charger, hard disk drives, medical device, LED TV etc. The POSLL’s dynamic performance becomes non-linear in nature;the designed controller able to get superior dynamic performance given by load estimation is done by using an observer and by combining the state-feedback control with the load estimator, a controller which is explicitly developed with strong robustness using separation principle. An effectual stability analysis is exemplified to prove that by carefully selecting the state feedback control and observer gain matrix, the output voltage of the dc-dc POSLL converter tracks the desired value irrespective of the uncertainties. Extensive simulation is carried out using MATLAB/Simulink model. The result based on time domain analysis is done by using the controllers for various disturbances given to the converter.
