Indirect voltage regulation of double input Y-source DC-DC converter based on sliding mode control

In this paper, a sliding mode controller is designed for regulating the output voltage of a double input and high step-up DC-DC converter with three coupled inductors called Y-source impedance network, which can provide a very high boost at lower shoot-through duty cycle of switch and has one more degree of freedom to achieve voltage boost. In the proposed converter, the set of input sources hand over power to the load at the same time or separately, so joining of different new dc energy sources such as wind turbine, solar array, or fuel cell with a battery can be applied as input sources. The proposed controller is robust and stable against variation of load demands and uncertainty of parameters. Simulation results confirm the capability and effectiveness of the proposed control approach.