Parallel loaded resonant converter

The link between the source and load does not have a DC path. The Power…. In this topic, you study Classification of Protective Relays. Protective relays can be classified depending…. We provide tutoring in Electrical Engineering.

View all posts by Electrical Workbook. Your email address will not be published. Classification of Resonant Converters Depending on the use of a resonant tank, resonant converters Fig. Current Source Parallel Resonant Converters. Class E Resonant Converter. Advantages of Resonant Converter Due to high frequency components are used in the circuit, switching losses are reduced and heating Of power devices are also reduced.

Therefore the cooling requirement is reduced Weight and size is reduced. Efficiency of converter is increased because Of power devices operates under zero voltage and zero current condition. Noise is reduced. Disadvantages of Resonant Converter The power devices will carry higher peak current values. In addition to resonant converter circuit and control circuit is required.

Therefore it increases the complexity. An AC…. The rest of this paper is organized as follows: Section II describes the proposed loaded resonant converter and operation of the proposed converter. Section III describes the simulation results. Next, Section. Figure2: Proposed loaded resonant converter for a dc-to-dc energy conversion system. Description of circuit and operating principles A. Description of circuit Increasing oil prices and energy shortages have created the demand for a high energy conversion efficiency and performance.

The growing power electronic product market has increased the demand for high power density and high energy conversion efficiency of dc to dc energy power converters. In recent years the soft switching scheme is the most effective and attractive for dc to dc energy conversion.

It can reduce the EMI and switching losses of the switch mode converter. The figure2 shows the proposed loaded resonant converter for dc to dc conversion.

The two capacitors C1 and C2 on the input side are big and used to split the input voltage. The resonant tank is connected to a bridge rectifier and the output of the bridge rectifier is connected the load Ro via filter Co. The bidirectional switch consists of active switch and an anti parallel diode. The bidirectional switch turn on and off by providing the gate triggering pulse to the switches. The output of the bidirectional switches are used to split the input dc voltage to square pulsating ac voltage.

Figure3: Equivalent circuit of the proposed doubly loaded resonant converter The resonant tank converts the square pulsating ac voltage to the sinusoidal ac voltage and it is given to the bridge rectifier. The bridge rectifier converts ac to the pulsating dc and large capacitance is placed to get the pure dc voltage. Operation of the circuit The proposed converter operates in continuous mode so the semi conductor shows the ideal characteristics.

Here the output voltage i. For analysis the figure 2 is simplified as figure 3. When ILr2 is positive the output voltage across the rectifier is Positive and if ILr4 is negative the output voltage across the rectifier is negative. The input part of the doubly loaded resonant converter of the application of dc to dc energy conversions consists of dc voltage source and bidirectional switches and these switches are controlled by the square wave pulsating signal.

The proposed converter mathematical modeling is ease [1]-[2]. Figure4: Block Diagram The above figure 4 represents the block diagram of the propose doubly loaded resonant converter for the application of dc to dc energy conversions and it consists of trigger signal, half bridge inverter, LCL filter, bridge rectifier and battery. The energy from the natural resources like photovoltaic, fuel cells and solar energy which produces the DC output for that type of systems these proposed converter is very useful it converts pulsating DC to continuous DC without any intervals and the output of the converter is fed to battery for storing the energy and it is connected to grids by rectifying the stored dc into ac.

The operation of block diagram is discussed above. The proposed system efficiency is high because it is operated with soft switching technique. By adjusting the switching frequency of converter the resonant tank characteristic impedance is determined and which is used to determine the output voltage and current. In order to get the required output the resonant converter output is applied to the load.

Effectiveness of the proposed system is demonstrated with experimental results. In contrast with the conventional system the overall efficiency is improved by proposed doubly loaded converter. Wongsaichua, W. Lee, S. Oraintara, C. Kwan, and F. Liang, R. Guo, J. Li, and A.

Power Electron, vol. Liu, J. Yan, and X. Surendra babu was born in tirupathi, in He received the B. Gopalakrushna received the B. Degree in Electrical Engineering from Bharath university,Tamilnadu, india, in He has eight years teaching experience. Download PDF.