Stabilization of DC–DC buck converter with unknown constant power load via passivity?based control plus proportion?integration

نویسندگان

چکیده

It is known that constant power load (CPL) may cause a negative impedance, which seriously affects the stability of system. In this paper, new control algorithm for DC–DC buck converter feeding unknown CPL proposed. First, under assumption extracted load, standard passivity–based (PBC) presented to reshape system energy and compensate impedance proportion-integration (PI) action around passive output added improve disturbance rejection performance, forms PBC plus PI (PBC+PI). Then, parameter estimation developed, based on immersion invariance (I&I) technique, in order online estimate load. next step, scheme adopted construct an adaptive strategy. Finally, analysis cascaded containing closed-loop observer error dynamics conducted. Simulation experimental results are demonstrated validate performance proposed controller.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Sliding Mode Control of a Bidirectional Buck/Boost DC-DC Converter with Constant Switching Frequency

In this paper, sliding mode control (SMC) for a bidirectional buck/boost DC-DC converter (BDC) with constant frequency in continuous conduction mode (CCM) is discussed. Since the converter is a high-order converter, the reduced-order sliding manifold is exploited. Because of right-half-plan zero (RHPZ) in the converter’s duty ratio to output voltage transfer function, sliding mode current...

متن کامل

Control of Series Resonant Converter with Robust Performance Against Load and Power Circuit Components Uncertainties

Robust performance controller design for duty-cycle controlled series resonant converter (SRC) is proposed in this paper. The uncertainties of the converter are analyzed with load variation and power circuit components tolerances are taken into consideration. Additionally, a nominal performance (NP) controller is designed. Closed-loop system is simulated with Orcad and simulation results of r...

متن کامل

Designing a novel structure of explicit model predictive control with application in a buck converter system

This paper proposes a novel structure of model predictive control algorithm for piecewise affine systems as a particular class of hybrid systems. Due to the time consuming and computational complexity of online optimization problem in MPC algorithm, the explicit form of MPC which is called Explicit MPC (EMPC) is applied in order to control of buck converter. Since the EMPC solves the optimizati...

متن کامل

Sliding Mode Control for a Buck Converter

Chaotic behaviors of the buck converter were demonstrated by computer simulation studies. The paper implied theoretical considerations and simulations for this kind of converter using a sliding-mode control. The method tried to establish a periodic behavior from a chaotic one in converter behavior. Key-Words: buck converter, sliding-mode, control, bifurcation, periodic, chaotic

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Iet Power Electronics

سال: 2021

ISSN: ['1755-4535', '1755-4543']

DOI: https://doi.org/10.1049/pel2.12205