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This paper proposed an analog controller without multiplier to realize the Maximum Power Point Tracking (MPPT) for PV applications based on an improved perturbation and observation (P&O) method. Comparing with traditional analog MPPT controller designs which need a multiplier to calculate the power value to implement P&O, the proposed method only perturbs and observes single variable to get...
Passivity enforcement is an important issue for macro-modeling for passive systems from measured or simulated data. Existing convex programming based methods are too expensive and thus are ruled out for realistic application. Other methods based on iteratively fixing the passivity through perturbing the eigenvalues of the Hamiltonian matrix either suffer from convergence issue or lack optimality which...
Electronic ballast requires a high voltage igniter to start up the HID lamps. An improved parallel igniter is proposed in this paper. The basic mechanism of it has been analysed and design principle is developed. Based on this parallel igniter, the lamp series inductor can be optimized separately. This improves the performance of both the igniter and lamp inductor. The simulation and experimental...
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