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In this paper, the application of the Sliding Mode Theory, in terms of observer and control design, to the DC-DC Single-Ended Primary Inductor Converter (SEPIC) is investigated. The choice and influence of the sliding surface regarding the state vector is presented. Usual sliding surfaces chosen to control other high order DC-DC converters are found not to work on the SEPIC. Thus, other surfaces are...
This paper presents different aspects involved in the application of fixed frequency Sliding Mode Control (SMC) to the DC-DC Single-Ended Primary Inductor Converter (SEPIC). The choice and influence of the sliding surface regarding the state vector are presented. Simulation results show that a sliding surface composed of the single integral of system's state variables gives steady-state errors whereas...
This paper presents a theoretical study with experimental validation carried out on a DC-DC SEPIC converter operating in continuous conduction mode (CCM). Two dynamic modeling techniques are adopted and various aspects of the converter's operating modes are analyzed. Simulations of transient and frequency responses are verified with experimental results. A PI control law is used to validate responses...
A sliding mode control (SMC) algorithm dedicated to switching mode power supply (SMPS) is validated experimentally in a FPGA. A constant high switching frequency is obtained using an hybrid digital pulse width modulator (DPWM). The proposed SMC strategy cooperates with an off-chip ADC and the hybrid DPWM takes advantage of a digital clock manager (DCM) and a counter-comparator based DPWM with a Multi-stAage-noise-SHaping...
Analogue control of monolithic DC/DC converters is technologically coming to a limit due to high switching frequency and a request for large regulation bandwidth. Digital control is now experimented for low-power low-voltage switch-mode power supply. Digital implementation of analogue solutions does not prove real performances. This paper compares a classical digital controller to a candidate alternative...
Analogue control of monolithic DC/DC converters is coming to a limit due to high switching frequency and a request for large regulation bandwidth. Digital control is now experimented for low-power low-voltage switch-mode power supply. Digital implementation of analogue solutions does not prove real performances. Other digital controllers have been experimented but applied to discrete converters. This...
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