Fuzzy controlled three port DC-DC converter fed DC drive for PV system

An Interleaved Soft Switching High Step-Up Converter With Low Input Current Ripple and High Efficiency

“…2(d), S 1 is turned on under ZVS at t 3 , the voltage across the primary winding of the transformer nearly keeps v p = −V Cc . i L1 still increases linearly as in (1), and i L2 decreases linearly as follow:…”

“…The peak current on the secondary winding of the transformer I m can be obtained as: (1), and i L2 decreases linearly as in (5). L m experiences two processes during t 2 to t 5 , first forward being discharged and then reverse being charged, respectively.…”

“…Research activities refer to development of environmentalfriendly and sustainable energy like solar energy and fuel cell have attracted extensive attention of academia and industry due to the gradual exhaustion of oil energy and the serious environmental pollution [1], [2]. In some low-voltage and high-current applications, such as photovoltaic (PV) power system and fuel cell (FCEL) power system, the DC-DC converter, which is located between the PV panel (or fuel cell unit) and the DC high voltage bus, is the key component to realize energy conversion and power control [3], therefore it is required to obtain a high voltage gain.…”

Design and Implementation of Improved Three Port Converter and B4-Inverter Fed Brushless Direct Current Motor Drive System for Industrial Applications

“….Here, ( )refers to the switching frequency, ( ) indicates the DC link power (i.e., the input power of B4-Inverter).The rating of the output capacitors 01 02 is derived from Equation ( 14) below for the minimum pulse width as done by [4] 01,02 =~× × 2 = 0.83 (0.03 × 48) × 314 × 2 = 917 (14) where ( ) indicates the angular frequency, permissible ripple voltage (~) in the output capacitors ( 01 02 ), which is considered to be the closest possible value, and therefore the output capacitors value of1000 is chosen. The current rating of ITPC converter and B4-Inverter switches is estimated by Equation (15,16) [9] = { +≈ } (15) = 1.25{0.83 + 0.8715} = 1.0893 (16) where represents the DC link current (i.e., the input current of B4-Inverter),≈ is the output ripple current in the ITPC converter and B4-Inverter, which is taken as 5% of maximum current and is computed as 0.08715 A, and the safety margin is taken to be 1.25 for the purpose of design.…”

“…Energy storage element, such as the battery, is necessary for improving the system dynamics and steady-state characteristics. An Integrated Three Port Converter (ITPC) interfaced with solar, battery and motor, at the same time, can be considered to be a right candidate for a renewable power system and has gained a lot of research interest recently [3][4][5].…”