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In power electronic converters working with PWM discontinuous control loops is very often used. This paper analyses the implementation of a valley current mode (VCM) control in a bi-directional hybrid DC-DC converter (HBDC) used in renewable energy applications. Analytical descriptions, digital simulation and experimental results performed on a laboratory prototype are presented in order to prove...
Increasing power demand due to further electrification of internal combustion engine vehicles has taken the 12V power supply to its limits. Therefore, some major automobile manufacturers including Audi, BMW, Daimler, Porsche and Volkswagen have agreed to implement a new two voltage-level network. A starter-generator, which may optionally assist acceleration and recuperate energy during braking, is...
The systematic design of a Linear Quadratic Regulator (LQR) state-feedback controller with an integral action is presented for a quadratic DC/DC boost converter topology. The weighting factors are selected with respect to energy considerations. By using a Kalman Filter for both filtering and state estimation purpose a Linear Quadratic Gaussian (LQG) controller is obtained. For the proper operation...
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