Saif Aldeen Saad Alkadhim
Analysis and Implementation of a Novel Bidirectional DC–DC Converter can use it.code in attachment.A novel bidirectional dc–dc converter is presented in this project. The circuit configuration of the proposed converter is very simple. The proposed converter employs a coupled inductor with same winding turns in the primary and secondary sides. In step-up mode, the primary and secondary windings of the coupled inductor are operated in parallel charge and series discharge to achieve high step-up voltage gain. In step-downmode, the primary and secondary windings of the coupled inductor are operated in series charge and parallel discharge to achieve high step-down voltage gain. Thus, the proposed converter has higher step-up and step-down voltage gains than the conventional bidirectional dc–dc boost/buck converter. Under same electric specifications for the proposed converter and the conventional bidirectional boost/buck converter, the average value of the switch current in the proposed converter is less than the conventional bidirectional boost/buck converter. The operating principle and steady-state analysis are discussed in detail. Finally, a 14/42-V prototype circuit is implemented to verify the performance for the automobile dual-battery system. Configurable Simulink Model for DC-DC Converters with PWM PI Control:This package includes a configurable Simulink model for three different types of DC-DC converters (Buck, Boost and Buck-Boost converters) with a PWM PI controller. The example provided shows a case to boost voltage from 5 volts to 25 volts. It can be used to learn DC-DC converters and their control. The model itself also provides an example how to mask a subsystem in Simulink. A HTML and a pdf files are provided to explain the principles of the unform Simulink model for three different types of DC-DC converters. The model does not require other Simulink blocks, such as SimPowerSystems. Design, modelling and control of bidirectional DC-DC converter (for EV):modelling design and control of a bidirectional dc-dc converter for EV applications. The provision for energy regeneration is achieved by using half bridge non isolated dc-dc converter. Small signal modelling of the system is done by the state space averaging technique. A PI controller has been implemented for the speed control. The soft switching technique has also been incorporated to minimize the switching losses. The system model has been simulated in the MATLAB/SIMULINK. Modeling and control of bidirectional DC-DC converter fed PMDC motor for electric vehicles:modelling and control design for a bidirectional dc-dc converter fed permanent magnet dc (PMDC) motor traction drive system for EV applications. The incorporation of the half bridge non-isolated bidirectional dc-dc converter improves the efficiency by allowing the provision for energy regeneration during braking (in the case of an EV or an HEV) and during down slope motion (in case of a pedalled electric bicycle). The state space averaging technique has been used to obtain the small signal model of the system. A unified PID controller working in both the modes i.e motoring and regeneration has been implemented for the speed control. The soft switching technique has also been incorporated to minimize the switching losses as well as to address the issue of parasitic ringing. The system model has been simulated in the MATLAB/SIMULINK and the results have been verified with the theoretical calculations.
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