Industrial Electronics
reza hazratian; Ebrahim Afjei
Abstract
This paper introduces a high-gain, non-isolated DC-DC converter featuring a single switch and a straightforward driving circuit. The proposed topology employs a super-lift Lou converter beside inductor-based and capacitor-based voltage multiplier cell to enhance the voltage lift technique. The voltage ...
Read More
This paper introduces a high-gain, non-isolated DC-DC converter featuring a single switch and a straightforward driving circuit. The proposed topology employs a super-lift Lou converter beside inductor-based and capacitor-based voltage multiplier cell to enhance the voltage lift technique. The voltage gain is capable of exceeding tenfold at low duty cycles. The input current is kept continuous to decrease the current stress of the input filter capacitor and the current stresses are less than the input current. Moreover, the voltage stresses remain below the output voltage, notably, the maximum value on the components is kept under half of the output voltage, marking a significant advancement for high-output voltage applications. Additionally, a common ground for the load and input source is established and the electromagnetic interference (EMI) noise issues are managed. The proposed topology is discussed in the ideal and non-ideal modes. Furthermore, the converter’s required relations are discussed in the continuous and discontinuous conduction modes (CCM & DCM). Then the suitable applications are discussed. Finally, this topology is highly recommended for high-intensity discharge (HID) lamps, supported by experimental results from a prototype with a 12 V input, 312 V output, 0.1 A output current and a 50 percent duty cycle.
Industrial Electronics
Mohsen Ehsani; Masood Saeidi; Hamid Radmanesh; Adib Abrishamifar
Abstract
In this paper, the linear state-space model of the multi-input DC-DC boost converter is obtained and based on, a linear SISO model is calculated. Model predictive control (MPC) offers a novel method of designing in the power electronic converters. The application to DC-DC converters offers real benefits ...
Read More
In this paper, the linear state-space model of the multi-input DC-DC boost converter is obtained and based on, a linear SISO model is calculated. Model predictive control (MPC) offers a novel method of designing in the power electronic converters. The application to DC-DC converters offers real benefits because of having simple tuning technique and analytical guaranteed stability. The weakness of this converter is non minimum phase behavior. One of the methods of implementation MPC controller is Generalized Predictive Control (GPC) which is compatible with non-minimum phase systems but due to simple implementation, using of the linear controller is more popular in power electronics control system. GPC has some advantage such as fast dynamic and robustness in the nonlinear system however main advantage of linear controllers is its low steady state error. The main idea of this paper is the investigation performance of GPC and linear controller in the multi-input DC-DC boost converter and camper with PI controller in term of dynamic, steady-state error, and robustness and run time in a microcontroller. The resulting of this comparison is critically assessed in simulation and algorithms ruining time has been compared in microcontroller hardware.
Industrial Electronics
Saeid Moosavi
Abstract
DC–DC boost converters are unable to provide high step-up voltage gains due to the effect of power switches, rectifier diodes, and the equivalent series resistance of inductors and capacitors. A high step-up DC-DC converter based on the modified SEPIC converter is presented in this paper. Step ...
Read More
DC–DC boost converters are unable to provide high step-up voltage gains due to the effect of power switches, rectifier diodes, and the equivalent series resistance of inductors and capacitors. A high step-up DC-DC converter based on the modified SEPIC converter is presented in this paper. Step up non-isolated converters generally suffer from problems such as high voltage stress and low efficiency. In this study, non-isolated boost converter structures, SEPIC, SEPIC modified circuit, and a proposed converter is studied. Then compare the performance of these typologies is located and presented as a chart. The operation analysis, design procedure for proposed converter is obtaied from 15V input voltage and 150V output voltage and with 100 watts output power. Using the proposed converter, the input inrush current and the invading voltage of the output have decreased. The time response analysis states that the proposed converter acts faster with deployment time than other converters.
Industrial Electronics
Mahdi Heidari
Abstract
The power generation from wind turbine are variable because of dependence on environmental conditions and it is important to extract maximum energy from wind. This paper proposes a new method to extract maximum energy from wind turbine systems. The artificial neural network (ANN) is used to estimate ...
Read More
The power generation from wind turbine are variable because of dependence on environmental conditions and it is important to extract maximum energy from wind. This paper proposes a new method to extract maximum energy from wind turbine systems. The artificial neural network (ANN) is used to estimate the wind speed based on the rotor speed and the output power. In addition to ANN, a predictive controller is used to maximize the efficiency of the boost converter. In predictive controller, duty cycle of boost converter is controlled to obtain the maximum power point based on the slope method. One of the most interesting advantages of this controller is simplicity of control and implementation that is leads to fast response and exact tracking. The method has been developed and analyzed by utilizing a turbine directly driven permanent-magnet synchronous generator (PMSG). The simulation results verify the performance of the proposed method. Results show that this method maximizes wind energy extraction with more accuracy and fastness.
