Sliding mode control presents robustness and takes into account the switching nature of the power converters. When applying sliding mode control a socalled sliding function sx is determined from a number of internal states collectively referred to as vector x of the switching converter s power stage. Switch mode power supplies represent a particular class of variable structure systems vss. Different methods of control mode in switch mode power supply. Unlike linear control, switching sliding mode control does not replace the control system, but uses the natural properties of the control plant system effectively to ensure high control quality. Comparison of pi, fuzzy and sliding mode control techniques. Switchmode power supplies represent a particular class of variable structure systems vss. Techniques and implementation by chi kong tse, siewchong tan, yukming lai unknown, 301 pages, published 2011 isbn10. The design and implementation of a cmos analog integrated circuit that provides versatile sliding mode control laws for highfrequency switching power converters is described. Sliding mode control now a days been frequently implemented in power converters due to its peculiar operational characteristics like robustness, speed and stable performance under wide load variations. This topic often cant be found in basic switchmode courses, and the wikipedia page covering the subject dwells on hardtounderstand abstract math.
Online sliding mode control is suited to multilevel power converters as they are inherently variable structure systems. Pdf sliding mode control for synchronous electric drives. A method for the online calibration of a circuit board trace resistance at the output of a buck converter is described. The hardcover of the sliding mode control of switching power converters. However, slidingmode control presents some drawbacks. The controller circuit implements generalpurpose linearsurface state control laws incorporating compensating dynamics. A complete understanding of this process is timely and necessary, as the electronics industry moves toward the use of.
Tse, fellow, ieee abstractthis paper presents a simple uni. Dear colleagues, the guest editor invites you to submit your contributions to a special issue of energies devoted to slidingmode control of power converters in renewable energy systems. Nonlinear statespace models and slidingmode controllers, presented in section 36. The controllers based on these techniques are simple to implement. A new sliding mode controller for dcdc converters in. Adaptive terminal slidingmode control strategy for dcdc buck converters. Techniques and implementation is perhaps the first indepth account of how sliding mode controllers can be practically engineered to optimize. Cciibased analog integrated circuit for slidingmode.
An example is that of pwmbased slidingmode control schemes for dcdc converters. Techniques and implementation is perhaps the first indepth account of how sliding mode controllers can be practically engineered to optimize control of power converters. Mar 19, 2017 sliding mode control of switching power converters. This thesis develops estimation and control techniques in power converters. The equivalent control method of analysing switching converters as vss, and the. This volume presents the theory of control systems with sliding mode applied to electrical motors and power converters. The methods of modelling the system and translation of the sm control equations for the pwm implementation are illustrated. First, the switching frequency depends on the working point, due to the control hysteretic nature. Techniques and implementation is perhaps the first indepth account of how.
Use features like bookmarks, note taking and highlighting while reading sliding mode control of switching power converters. Sliding mode control smc can reduce the voltage ripple voltage ripple of smps. The control of these converters has been often implemented using pwm techniques and based on discrete components and integrated circuits. Ieee power electronics specialists conference record pesc. Sliding mode control for synchronous electric drives crc.
Smc with discontinuous control actions has the potential to circumvent parameter variation effects with low implementation complexity. Modeling and sliding mode control of dcdc buckboost. Moreover, the dcdc power converters are the ideal candidates in numerous applications such as electric and hybrid vehicles, fuel cells and others. Sliding mode control switching power converters semantic scholar. Modeling and implementation of fixed switching frequency. Statespace averaging and linearization provides an elegant solution for the application of widely known linear control techniques to most switching converters. Department of electronic and information engineering hong kong. This letter addresses the various issues concerning the implementation of a pulsewidth modulation pwm based sliding mode sm controller for boost converters. However, sliding mode control presents some drawbacks. Us8779740b2 digital sliding mode controller for dcdc.
Operating modes of dcdc power converters overview of control. The implementation of the smc to a hwzcs dcdc buck converter is analysed. Techniques and implementation siewchong tan, yukming lai, chikong tse sliding mode control of switching power converters. The method of the equivalent control is illustrated in the design of a cascade control for the voltage regulation of a nonminimum phase converter. The voltage feedback arrangement is known as voltage mode control when applied to dcdc converters. Sliding mode control for synchronous electric drives 1st. Sliding mode control principle is graphically represented in figure4.
Application of sliding mode control to dcdc converters 3. Design of pwmbased slidingmode control of boost converter. Advanced control of switching power converters sciencedirect. In this thesis, a novel sliding mode control strategy for mechanical systems with electric motors as actuators is proposed. Sliding mode control of switching power converters techniques and implementation. It demonstrates the methodology of control design and the original algorithms of control and observation. A complete understanding of this process is timely and necessary, as the electronics industry moves toward the use of renewable energy sources and widely varying loads that. Implementation of the control decision given by eqn 11 involves. The slidingmode control is an effective robust control strategy with the feature of switching the control law to force the state trajectories of the system from the initial states onto some predefined sliding surface which exhibit desired dynamics. The application of sliding mode, a nonlinear robust and selfcontained approach, to the control problem of electronic power converters, is outlined and illustrated.
Socalled sliding mode control alleviates some problems discussed above with respect to the classical pid controller. Sliding mode control of switching power converters. Highperformance fractional order terminal sliding mode. The design and implementation of a cmos analog integrated circuit that provides versatile. Such converters are nonlinear, time variant systems. Switched mode power converters are being used extensively for the purpose of efficient power conversion.
When the book discusses slidingmode control, it is in the context of real converter circuits. These parameters have a severe effect on the behavior of switch mode power supply and may cause instability. Design of practical slidingmode controllers with constant. This is the first text that thoroughly describes the application of the highly theoretical control design approach to synchronous drives in practice. Some of these new control schemes for power converters include fuzzy logic, sliding mode control, and predictive control. A complete understanding of this process is timely and necessary, as the electronics industry moves toward the use of renewable energy sources and widely varying. Slidingmode control of power converters journal of the indian. The design and implementation of a cmos analog integrated circuit that provides versatile slidingmode control laws for highfrequency switching power converters is described.
Slidingmode control smc is increasingly used in power electronics due to its accurate dynamic analysis, fast resulting response, and inherent robustness in front of parametric changes. The methods of modelingthesystem andtranslationof thesmcontrolequationsfor the pwm implementation are illustrated. The sliding mode controller is associated with a digital pulse width modulation dpwm block to operate at high switching frequency. Prospective applications of the method reported are also discussed. Practically all semiconductor devices are used in power converters, that feed electrical motors, as power switches. Thus, they can take advantage of nonlinear control techniques developed for this class of systems. A voltage converter changes the voltage of an electrical power source and is usually combined with other components to create a power supply. Chattering, a characteristic of sliding mode, is inherent to switching. For closedloop control of converters, two fundamental mechanisms, voltagemode control or currentmode control, are generally employed. Current mode control has been understood to offer superior performance.
Principle scheme a basic sliding mode control scheme of dcdc converters is shown in fig. Pdf sliding mode control of switching power converters. The voltage feedback arrangement is known as voltagemode control when applied to dcdc converters. Owing to the timevarying switched mode operation, the dynamic performance of twostage converter becomes high order and nonlinear. Sliding mode control of power converters caltechthesis. The main advantages of slidingmode control over conventional pwm control are stability, even for large supply and load variations, robustness, good dynamic response, and simple implementation.
They have been extensively researched upon over three decades. Techniques and implementation kindle edition by tan, siewchong, lai, yukming, tse, chikong. Control scheme of the sliding mode constant switching frequency direct power control smcsfdpc the design of the sliding mode control supports the problems of stability and the desired performance in a systematic way. A fixed switching frequency sliding mode fsfsm controller for twostage dcdc converter is proposed. Currentmode control has been understood to offer superior performance.
A complete understanding of this process is timely and necessary, as the electronics industry moves toward the use of renewable energy sources and widely. The theory of variable structure systems vss, and sliding mode control form a mutually complementary analysis and design tools for the control of. Here hysteretic mode control method compared with voltage mode and current mode control, it shows the features and advantages of hysteretic mode control in switch mode power supply. Multiloop control techniques, like current mode control, have greatly improved power converters behavior but the control design remains difficult for highorder topologies, like those based on cuk and sepic schemes. Sliding mode control for halfwave zero current switching quasiresonant buck converter 1 sliding mode control for halfwave zero current switching quasiresonant buck converter nordic workshop on power and industrial electronics norpie 2004 m. Fractionalorder terminal slidingmode control for buck dc. The theory of variable structure systems vss, and sliding mode control form a mutually complementary analysis and design tools for the control of switched mode power converters. As already mentioned, the main principle in sliding mode control is the defining the surface, which is called as sliding surface. Sliding mode control of switching power converters taylor. Download it once and read it on your kindle device, pc, phones or tablets. The main advantages of sliding mode control over conventional pwm control are stability, even for large supply and load variations, robustness, good dynamic response, and simple implementation.
The analog controller integrated circuit considers currentmode circuit techniques, hence. Modeling and sliding mode control of dcdc buckboost converter. Different methods of control mode in switch mode power. Fuzzy logic is suitable for applications where the controlled system or some of its parameters are unknown.
Power converters sliding mode control pulsewidth modulation nonlinear systems discontinuous control abstract a novel experimentally motivated method in order to design a family of easytoimplement sliding mode controllers for power converters is proposed. Sd pro engineering solutions pvt ltd 1,324 views 3. Aug 18, 2016 an example is that of pwmbased slidingmode control schemes for dcdc converters. This title is devoted to the control of static converters, which deals with pulsewidth modulation pwm techniques, and also discusses methods for current control.
The theoretical predictions are validated by means of psim. Converters in continuous conduction mode siewchong tan, member, ieee, y. For closedloop control of converters, two fundamental mechanisms, voltage mode control or current mode control, are generally employed. The switching control law incorporates the dynamics of the electrical and the mechanical subsystem. Techniques and implementation by siewchong tan, yukming lai, chikong tse at due to covid19, orders may be delayed. Issues regarding the implementation of sliding controls for thermal regulation. Estimation and control techniques in power converters. Sliding mode control for halfwave zero current switching. A sliding mode approach into constant switching frequency. Silva and others published sliding mode control of switching power converters. A method for the online calibration of a circuit board trace resistance at.
Many control techniques are used to control the dcdc converters and solve the. Different control techniques are applied to regulate the dcdc converters, especially buck. Cciibased analog integrated circuit for slidingmode control. The target applications are voltage regulators for modern microprocessors vrm and distributed dc power systems dps. Power converters slidingmode control pulsewidth modulation nonlinear systems discontinuous control abstract a novel experimentally motivated method in order to design a family of easytoimplement slidingmode controllers for power converters is proposed. The chattering problem is tackled by including actuator dynamics, which has so far been ignored, in the control unit design. It is shown that the control technique is easily realized with simple analog circuitries. Design of pulsewidthmodulation based sliding mode controllers for power converters in discontinuous conduction mode siewchong tan. Cciibased analog integrated circuit for slidingmode control of.
Application of sliding mode for dcdc converters is promising because a switching control strategy is employed in the converters 3. In the past such converters were being modelled using the state space averaging method. The statefeedback control law is not a continuous function of time. The sliding mode control of dcdc converters is simple to implement and it is studied in many papers 46. Sliding mode control of permanent magnet dc motorbest ieee 20182019 projects list at bangalore duration. The sliding mode control of dcdc switching converters is presented in contrast to the traditional pulse width modulation approach. Experimental results show that the proposed control scheme provides good voltage regulation and is. Introduction dcdc switching converters are the keystones of the socalled power processing systems, which can be described in contrast to signal processing systems. Techniques and implementation by chi kong tse, siewchong tan, yukming lai unknown, 301 pages, published 2011.
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