Fault Tolerant Control of a PEM Fuel Cell using qLPV Virtual Actuators

Abstract

Abstract:This paper proposes a fault tolerant control (FTC) strategy based on the use of quasi-linear parameter varying (qLPV) virtual actuators approach for proton exchange membrane (PEM) fuel cells. The overall solution relies on adding a virtual actuator in the control loop to hide the fault from the controller point of view, allowing it to see the same plant as before the fault, in this way keeping the stability and some desired performances. The proposed methodology is based on the use of a reference model, where the resulting nonlinear error model is brought to a qLPV form that is used for control design by means of linear matrix inequalities (LMI)-based techniques. The resulting closed-loop error system is stable with poles placed in some desired region of the complex plane. Simulation results are used to show the effectiveness of the proposed approach.

TS fuzzy reconfiguration blocks for fault tolerant control of nonlinear systems

“…In particular, the so-called static RB disregards the first component related to the internal model, and it is reduced to a simple linear transformation. Static VAs and VSs are firstly presented in [13] and are used for fault hiding in some other works [27,28,33,43,44] . However, they are obtained through the use of the pseudoinverse under hard rank conditions.…”

“…7 depicts the results for this scenario comparing the faulty system without RB with the reconfigured systems using the proposed TSRB and the VS described in Eq. (44) . Similarly to the previous scenarios, the faulty system without RB and the reconfigured system with the VS described in Eq.…”

Passive Fault Tolerant Control of PEMFC air feeding system

“…During faulty operation the average value of Relative Error (RE) associated to classical PID controller is 21.43 %, whereas the value associated to autotuning PID strategy is 1.33 %. The RE are calculated thanks to the Equation (12). Fig.…”

“…The authors compare PFTCS and AFTCS performances, and the simulated results show the superiority of the AFTCS. Rotondo et al [12] present a fault-hiding paradigm to achieve fault tolerance against controller compressor faults. In actuator fault case, the reconfiguration block is called Virtual Actuator and allows a proper regulation of oxygen excess ratio.…”