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Power hardware in the loop (PHIL) system for electric drives application based on power converter with Field Programmable Gate Array (FPGA )control system which realizes in real time model of converter, motor and mechanism is discussed. PHIL-system is intended for converters testing and for their operating modes studying. PHIL-system repeats electric drive instantaneous current and angular velocity.
The importance of energy-efficient DC voltage conversionis ever increasing. This demands for advanced topologiessuch as time-interleaved multiphase DC-DC converters. Anessential part of such a converter is the control loop, which not only regulates the output voltage, but also balances the currents of the individual phases. In this paper, a small-signal model of a two-phase buck converter is derived,...
We propose an output error-driven random controlled Single Inductor Multiple Output (SIMO) buck/boost DC-DC converter operated in the Continuous Conduction Mode (CCM). Random selection of output switches based on maximum instantaneous output error enables us a novel control scheme which leads to a fast transient response with mitigating the cross-regulation problem of buck-boost converters. A freewheeling...
The buck-boost inverter can be easily used to construct a multi-input converter due to its inherent symmetrical and extendable differential structure. This paper proposed a multi-input converter derived from the buck-boost inverter to interface different input sources. When two pure DC voltages are chosen as the references for the two output capacitor voltages, the proposed converter will operate...
The Buck-Boost converter with pulse width modulator has a large impact on power industry in energy management, specifically for electronic devices. In this paper the sub-optimal model predictive control algorithm applied to Buck-boost converter, which assured robust stability of system. This algorithm based on simpler optimization problems, which can be solved faster, and still have prior robust stability...
This paper proposes the design and implementation of a high power full bridge bidirectional isolated DC-DC converter (BIDC) which comprises of two symmetrical voltage source converters and a high frequency transformer. In the proposed BIDC, a well-known PI controller based single phase-shift (SPS) modulation technique is used in order to achieve high power transfer. Besides, different phase shift...
Simulator of electric drive system based on power converter with control system which realizes in real time model of converter, motor and mechanism is discussed. Power simulator is intended for converters testing and for their operating modes studying. Simulator repeats electric drive instantaneous current and angular velocity.
A battery charger applying an inductive power transfer (IPT) for electric vehicles has various advantages. Then, there is a case that the secondary-side converter is connected to the receiving side of the IPT system in order to regulate the charging power for the battery of electric vehicles. In the previous studies about this converter, it was investigated that the type of the secondary-side converter...
This paper proposes a control strategy for a step-down Buck power converter with LCL output filter feeding a constant power load. The control strategy uses exact feedback linearization, including the power estimation of the load. This allows to obtain fast response when the power demanded changes between different values.
The process of regenerative braking of an electric vehicle with source of energy - battery and ultracapacitor is subject of this work. The studied system is composed of a brushless DC motor, buck-boost DC converter and ultracapacitors. An optimization of the control system for storing maximum energy in the ultracapacitors is performed. The results are useful for the aim of improving the control of...
In this paper, the application of a multiphase interleaving DC-DC converter in the drivetrain of an electric vehicle is studied. At first, a method for controlling the converter is proposed which ensures its operation under variable switching frequency and changing of the number of active phases. The implemented cascade control is designed with the help of a small signal model of the multiphase converter...
Managed Pressure Drilling (MPD) is a control technique for controlling pressure in the presence of wave disturbance. It works as an insurance against delays due to weather conditions by saving time and increasing the efficiency of offshore drilling operations. During MPD, a circulating drilling fluid is released in well through control choke which helps to dynamically control fluid pressure in the...
It is a challenging task to control polymerization reactor due to the complex reactions mechanism. Moreover, the dynamic behaviour of the polymerization reactor is highly nonlinear. Thousand of reactions involed during polymerization that make the system complex in nature. Artificial intelligent appeared as promising tool to control such kind of nonlinear and complex processes. In the present work,...
A novel bridgeless Buck power factor correction (PFC) converter with only half dead zones is proposed in this paper. The operation of the proposed PFC converter can be divided into two different modes including Buck mode in positive line cycles and Cuk mode in negative line cycles. Compared with the bridge or bridgeless Buck PFC converter, only half dead zones occur in this proposed PFC converter...
We demonstrate at designing Delta-Sigma Modulator controlled switch-mode power supplies by considering advantage of its noise-shaping properties to eliminate the spikes present in switching power supplies. A comparative analysis between conventional Pulse Width Modulation (PWM) controller and this approach is also done. The work begins with the Designing of DC-DC Buck Converter to convert 5V input...
This paper introduces an adaptive current control strategy for DC-DC boost converters without input-output voltage sensing. In addition, accurate current control is achieved in the presence of dynamical uncertainties. Unlike many controllers available for DC-DC converters, the adaptive controller's stability is guaranteed by Lyapunov stability theory. A comparison to PI counterpart has been carried...
Matlab-Simulink Model of a three-phase grid with a system Fixed Capacitor - Thyristor Controlled Reactor (FC-TCR) for compensation of reactive power and for maintaining the power factor in the grid close to unity is presented. The specific features of the proposed model are applying the method of instantaneous powers for determining the load reactive power, and using a control system, whose structure...
The article contains the examples of using new and little-known laws of power switches functioning and nodes of semiconductor magnetic-pulse devices of power electronics. Approaches for improving the basic performance of these devices are based on these examples. The article is covering the proposed specific solutions and provides practical magnetic semiconductor circuit for excitation the laser generator...
Boost converter with high power has turned into the key part of the power framework that enables power to be completely used. The novel way to accomplish a decreased current ripple and voltage ripple for dc chopper is actualized. Typical boost converter is interleaved to stop high input current stress on the switches. Interleaved Dual Boost Converter has two boost converter worked in parallel and...
This paper presents a high-efficiency non-isolated synchronous buck-boost DC-DC switching converter. The circuit is made to operate in Discontinuous Conduction Mode (DCM)of operation for minimum inductor value, to reduce size and cost of the converter. A snubber capacitor is used across the switch to minimize turn-off loss. The power dissipation through snubber capacitor and inductor is minimized...
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