King Fahd University of Petroleum and Minerals

Muhammad Maaruf

Muhammad Khalid

Sami Elferik

A method for controlling a fuel cell hybrid electric vehicle (FCHEV) with sensor fault tolerance includes receiving current measurements of a fuel cell, a battery, an ultracapacitor, and a voltage measurement of a DC-bus from sensors; detecting and estimating a sensor fault in at least one of the current measurements using a radial basis function neural network (RBFNN); calculating a new value for a single parameter of the RBFNN according to a minimum learning parameter scheme; calculating a duty cycle value for each power converter; and applying the calculated duty cycle value to power converters that connect the fuel cell, the battery, and the ultracapacitor to the DC-bus, to maintain a current distribution despite the sensor fault.

System and method for controlling fuel cell hybrid electric vehicle with sensor fault tolerance

Control system and method for integration and transition between standalone and grid-connected operations of a hybrid renewable microgrid system include a multiple-input multiple-output controller that manages a rotor-side and a grid-side converter, structured in a back-to-back configuration, alongside a DC-DC buck-boost converter. The system harnesses energy from a solar generation unit of interconnected photovoltaic panels and a wind generation unit linked to a permanent magnet synchronous generator. Both energy sources are efficiently coordinated through maximum power point tracking control. The solar unit is directly connected to a DC bus, which also interfaces with the grid-side converter. An energy storage unit is seamlessly integrated, providing power management and voltage regulation capabilities to maintain consistent power delivery and quality, even during fluctuations in renewable energy production.

Robust control for optimized islanded and grid-connected operation of solar/wind/battery hybrid energy systems

A system and a method for controlling a hybrid microgrid system (HMS) is disclosed. The HMS includes a WTG, an RSC, a GSC, a DC-link connecting the RSC and the GSC, a PV system that outputs a DC current to the DC-link, a rechargeable battery, a bidirectional BBC connected between the DC-link and the rechargeable battery, and a controller. The method for controlling the HMS includes: preparing a definition set including a characteristic element cand equations defining desired value c*, a fractional order sliding mode surface ζ, and a control law element u; monitoring c(t) and the HMS status; calculating the equations based on monitored information; and controlling the HMS based on the u(t) calculated and in accordance with a global sliding mode control with fractional order terms. The ζcomprises a fractional time integral and fractional time derivative of e(t), where e(t)=c(t)−c*(t). The u(t) satisfies when ζ(t)≠0.

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Dhahran, Saudi Arabia

Muhammad Maaruf