Sliding Mode Control of Power Converters with Switching Frequency Regulation

2017 ◽  
pp. 385-409
Author(s):  
Víctor Repecho ◽  
Domingo Biel ◽  
Josep M. Olm ◽  
Enric Fossas
Keyword(s):  
Sliding Mode Control ◽  
Power Converters ◽  
Sliding Mode ◽  
Frequency Regulation ◽  
Switching Frequency ◽  
Mode Control

scholarly journals Switching Frequency Regulation in Sliding Mode Control by a Hysteresis Band Controller

2017 ◽  
Vol 32 (2) ◽  
pp. 1557-1569 ◽  
Author(s):  
Victor Repecho ◽  
Domingo Biel ◽  
Josep M. Olm ◽  
Enric Fossas Colet
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Frequency Regulation ◽  
Switching Frequency ◽  
Mode Control

SLIDING MODE DESIGN OF CONTROL AND MODULATOR ELECTRONICS FOR POWER CONVERTERS

1995 ◽  
Vol 05 (03) ◽  
pp. 355-371 ◽  
Author(s):  
J. FERNANDO SILVA
Keyword(s):  
Steady State ◽  
Sliding Mode Control ◽  
Power Converters ◽  
Sliding Mode ◽  
Power Converter ◽  
Operating Conditions ◽  
Switching Frequency ◽  
Circuit Parameter ◽  
Mode Control ◽  
State Error

This paper presents state-of-the-art application of Sliding Mode Control theory, to improve the performance and to integrate the modulator and control electronics design of power converters. This approach eliminates conventional PWM modulators and loop linear PI regulators, reducing the converter complexity, weight and volume, which increases its power density figure. Sliding Mode Control techniques are used to obtain, from the controllability canonical system model, the control law, a linear combination of state variable errors and its derivatives, whose implementation is a simple circuit, that directly generates the drive pulses for the semiconductors. The commutation strategy implements a power converter with better performances than conventional PWM controlled ones, faster response and robustness concerning circuit parameter variations and operating conditions. This non linear control approach provides zero steady-state error and, by the subtle use of limiters, short circuit ouput current limitation. Using a simple 3 level clock, it is also shown how to obtain a sliding mode controller with constant switching frequency and zero steady-state error.

Robust sliding mode control of a DC/DC Boost converter with switching frequency regulation

2018 ◽  
Vol 355 (13) ◽  
pp. 5367-5383 ◽  
Author(s):  
Víctor Repecho ◽  
Domingo Biel ◽  
Josep M. Olm ◽  
Enric Fossas
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Boost Converter ◽  
Frequency Regulation ◽  
Switching Frequency ◽  
Mode Control

A robust cascaded controller for DC-DC Boost and Cuk converters

2017 ◽  
Vol 14 (5) ◽  
pp. 459-466 ◽  
Author(s):  
Fiaz Ahmad ◽  
Akhtar Rasool ◽  
Esref Emre Ozsoy ◽  
Asif Sabanoviç ◽  
Meltem Elitas
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Supply Voltage ◽  
Load Resistance ◽  
Switching Frequency ◽  
Content Type ◽  
Mode Control ◽  
Control Scheme ◽  
Equivalent Control ◽  
Discontinuous Nature

Purpose This paper aims to propose a robust cascaded controller based on proportional-integral (PI) and continuous sliding mode control. Design/methodology/approach Cascaded control structure is an attractive control scheme for DC-DC power converters. It has a two-loop structure where the outer loop contains PI controller and the inner loop uses sliding mode control (SMC). This structure thus combines the merits of both the control schemes. However, there are some issues that have prohibited its adoption in industry, the discontinuous nature of SMC which leads to variable switching frequency operation and is hard to realize practically. This paper attempts to overcome this issue by changing the discontinuous functionality of SMC to continuous by utilizing the concept of equivalent control. Findings The robustness of the controller designed is verified by considering various cases, namely, ideal case with no uncertainties, sudden variation of input supply voltage, load resistance, reference voltage, circuit-parameters and for noise disturbance. The controller effectiveness is validated by simulating the DC-DC boost and Cuk converters in SimPowerSystems toolbox of MATLAB/Simulink. It is shown that the performance of the proposed controller is satisfactory, and both reference output voltage and inductor current are tracked with little or no sensitivity to disturbances. Originality/value The results for various scenarios are interesting and show that the controller works quite satisfactorily for all the simulated uncertainties.

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