This study considers the parameter estimation of a multi-variable output-error-like system with autoregressive moving average noise. In order to solve problem information vector containing unknown variables, least squares-based iterative algorithm is proposed by using search. The original divided into several subsystems decomposition technique. However, contain same vector, which poses challenge for identification problem, approach taken here use coupling concept cut down redundant...

The identification problem of multivariable controlled autoregressive systems with measurement noise in the form moving average process is considered this paper. key to filter input–output data using filtering technique and decompose model into two subidentification models. By negative gradient search, an adaptive filtering‐based iterative (F‐GI) algorithm F‐GI finite are proposed for identifying parameters systems. In numerical example, we illustrate effectiveness methods.

In the process of grid connection an LCL inverter, sudden changes in load, high harmonics voltage, power, and other disturbances often occur. These will cause sharp degradation grid-connected power quality, so this paper proposes a new solution to problem how reduce eliminate quality by using first-order linear active disturbance rejection control (LADRC) strategy with precise compensation via splitting total term. An improved overall direct method for was proposed. The use subdivision term...

A novel control scheme with PD output voltage instantaneous-value feedback inner loop for voltage-source inverter is proposed. The designed to improve dynamic performance and the IMC-PID (internal model control-proportion integral derivation) external can ensure stable performance. design methods of controller based on pole-assignment are discussed in detail. Simulation experimental results given validate that proposed has not only nice static but also strong robustness. robustness,...

Because of the energy crisis caused by shortage fossil energy, countries begin to study low-carbon new and micro-grid systems related more importantly dispatching is focus whole system. The application model predictive control microgrid has become one mainstreams, but prediction error will affect power balance actual Aiming at above problems, improved MPC strategy which deals with adding compensation put forward. Through real-time monitoring photovoltaic, fan load power, difference between...

Hammerstein system identification is difficult because there exist the product items of parameters between static nonlinear block and dynamic linear block. This paper presents a novel parameter separation based recursive least squares (PS-RLS) algorithm for resolving this problem. Its basic idea to use filter output data noise, then obtain two new submodels in each which corresponding vector. Compared with over-parametrization method, proposed can avoid estimating redundant has higher...

This paper investigates the nonlinear characteristic and its suppression method of cosite interference cancellation system (CICS). According to non-ideal factors CICS, effect on are analyzed in detail. The frequency domain is gained. Due factors, CICS becomes a harmonics will appear residual signal. When serious, they cause lose offset effect, even new interference. Through reasonable design gain time constant low-pass filter, total harmonic distortion (THD) rate can be reduced suppressed...

This paper investigates the parameter optimal method and design of forward gain with Automatic Gain Control (AGC) for cosite interference cancellation system. The was calculated analyzed. With AGC, couple reference signal can be reduced influence picking up to transmitter decreased. gain, null shift suppressed effectively convergence speed CICS is much faster. When change in 20dB, designed still suppress enough maintain faster CICS.

This paper investigates the interference cancellation method with single co-site system (CICS) when there are two interferences simultaneously. The model was established to analyze performance. By time-domain analysis, formulas of steady-state weights and ratios (ICRs) were deduced. delay in reference signal picking branch put forward achieve theoretical analysis verified by simulation experiment.

Extended Kalman filter (EKF) algorithm can be used as a model-based approach to estimate the state of charge (SOC) batteries, and accuracy SOC estimation affected by error battery model. Moreover, large current or change leads model error. A fuzzy dual (Fuzzy-DKF) was proposed in this paper. Specifically, Thevenin equivalent circuit established, transformed autoregressive exogenous (ARX) model, parameters ARX were identified (KF) algorithm; monitored real time control system built reduce...

In order to improve the voltage balancing effect of lithium-ion power battery pack, a control strategy based on single-cell overbalanced in pack was proposed. this method, each is taken as criterion energy balance, and analog switch storage inductor are used balance circuit. The PID overequalization proposed, which fully considers self-recovery after end charging process. balanced system single-battery realized, maintains stable equilibrium state being balanced. experimental circuit built...

This paper investigates the convergence characteristic of a three-channel adaptive interference cancellation system (AICS-3ch) and influence some on-ideal factors on AICS-3ch. The course was analyzed by solving weight equations. calculation method ratio deduced under different gain zero shift design criterion with effective suppression were studied proposed. Finally, validity effectiveness analysis results proposed are confirmed simulation experiment.

Application of TMS320F2812 in the power metering system for electric engines is described, uses two-wattmeter to measure electrical power, only collect UAC, UBC, iA, iB, which can accurately calculate amount it has high frequency sampling rate, real-time date processing capability, and finally displays motor through LCD.

The DC arc is the main cause of fire in photovoltaic (PV) systems. This due to fact that has no zero-crossing point and prone stable combustion. Failure detect it a timely manner can seriously endanger PV system. study analyzes influences series maximum power tracking (MPPT) algorithm on output characteristics based equivalent circuit module. voltage current variation are obtained when occurs. findings indicate input converter remains unchanged MPPT before after Furthermore, faulty string...

When two or more inductive heating coils are near and their sources operating with different switching frequency, low-frequency noise occurs. In order to avoid such noises, this paper presents the constant frequency shift-phase power regulation for series resonant inverters. Leading leg switches always work at ZVS. Lagging ZCS when shift phase angle is bigger than load impedance angle, otherwise lagging This analyses switch modes in detail, choice principles of capacitance which paralleled...

This paper investigates the bandwidth compression method for co-site interference cancellation system (CICS). The CICS has some notch bandwidth, which may attenuate weak desired signal and influence reception of by receiver. For suppressing attenuation to signal, mechanism was analyzed. According mechanism, a new put forward. With that in CICS, can be protect well canceled effectively. Finally, validity proposed verified simulation.

This paper investigates the compression method of notch bandwidth in co-site interference cancellation system for protecting desired signal. The mechanism was given time domain. correlation detection and locking weight put forward analyzed. Using system, can still be canceled effectively signal protected well. Finally, validity effectiveness proposed confirmed by simulation experiment.

This paper investigates the influence of swinging antennas on co-site interference cancellation system (CICS) and improved method for keeping effective as swing.The signal model coupled from transmitter to receiver was established when swing received analyzed.The will cause be modulated.The amplitude bandwidth changed.For suppressing cancellation, designed is proposed.Finally, validity proposed confirmed by simulation experiment.