Inductor Compensation in Three Phase PFC Control with Decoupling the Input Voltage and Bus Voltage

This paper introduces a kind of monolithic emitter switched bipolar transistor (ESBT) for three-phase rectifier applications and other high voltage applications. This paper proposes an improved driving circuit, combining the soft switch circuit. We made a flyback circuit prototype which the rated power is 80W, and the maximum input voltage is 800V, and compared with the existing driving circuit.

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A novel power inverter for switched reluctance motor drives

Facta universitatis - series Electronics and Energetics ◽

10.2298/fuee0503453g ◽

2005 ◽

Vol 18 (3) ◽

pp. 453-465 ◽

Cited By ~ 9

Author(s):

Zeljko Grbo ◽

Slobodan Vukosavic ◽

Emil Levi

Keyword(s):

Switched Reluctance Motor ◽

Voltage Source ◽

Power Electronic ◽

Switched Reluctance ◽

Three Phase ◽

Reluctance Motor ◽

Converter Topology ◽

Dc Bus ◽

Bus Voltage ◽

Power Electronic Converter

Although apparently simpler, the SRM drives are nowadays more expensive than their conventional AC drive counterparts. This is to a great extent caused by the lack of a standardised power electronic converter for SRM drives, which would be available on the market as a single module. A number of attempts were therefore made in recent times to develop novel power electronic converter structures for SRM drives, based on the utilization of a three-phase voltage source inverter (VSI), which is readily available as a single module. This paper follows this line of thought and presents a novel power electronic converter topology for SRM drives, which is entirely based on utilization of standard inverter legs. One of its most important feature is that both magnetizing and demagnetizing voltage may reach the DC-bus voltage level while being contemporarily applied during the conduction overlap in the SRM adjacent phases. At the same time, the voltage stress across the power switches equals the DC-bus voltage. The topology is functional in all operating regimes of the drive. Principle of operation is explained in detail for a three-phase SRM drive and experimental results obtained with a 6/4 switched reluctance motor, are included. Four inverter legs are required in this case. Some considerations, justifying the proposed converter topology from the point of view of the cost, are included.

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A New Bidirectional Three-phase Neutral Point Clamped (NPC) Grid-Connected Converter: Analysis and Simulation

10.48011/sbse.v1i1.2202 ◽

2021 ◽

Author(s):

Christel E. G. Ogoulola ◽

Angelo J. J. Rezek ◽

Robson B. Gonzatti ◽

Vinicius Z. Silva ◽

Marcos L. Ramos ◽

...

Keyword(s):

Pulse Width Modulation ◽

Analog Circuit ◽

Harmonic Distortion ◽

Simple Algorithm ◽

Unit Vector ◽

Theoretical Development ◽

Electrical Network ◽

Synchronous Reference Frame ◽

Three Phase ◽

Bus Voltage

This paper deals with the theoretical development, analysis, and simulation of the new topology of three-phase NPC (Neural Point Clamped) converter. The proposed 6-kW three-phase converter is connected to a three-phase electrical network and due to its bidirectional characteristics can either send energy to the grid or receive it from the grid. The classic strategy of vectorial control at the DQ synchronous reference frame, along with a simple algorithm for Unit Vector Generation (UVG), have been employed to control the line currents in the grid and the DC-bus voltage, thus substituting the PLL (Phase Locked Loop). A PWM (Pulse Width Modulation) strategy is presented in the form of an analog circuit and used for switching the semiconductors in the converter. The obtained results were verified using Matlab/Simulink software. The proposed converter has five voltage levels at the output for each phase and proven more advantageous than the conventional NPC. In addition, it was obtained a better harmonic content in the grid currents because there is very low Total Harmonic Distortion (THD) both when acting as a rectifier and as an inverter.

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Optimization and comparative analysis of PID and FOPID controller for BLDC motor

IAES International Journal of Robotics and Automation (IJRA) ◽

10.11591/ijra.v8i3.pp174-183 ◽

2019 ◽

Vol 8 (3) ◽

pp. 174

Author(s):

P. Vimala ◽

C. R. Balamurugan ◽

A. Subramanian ◽

T. Vishwanath

Keyword(s):

Genetic Algorithm ◽

Comparative Analysis ◽

Input Signal ◽

Pid Controller ◽

Input Voltage ◽

Bldc Motor ◽

Phase Inverter ◽

Three Phase ◽

The Stability ◽

Three Phase Inverter

The FOPID and PID controller are designed to control the speed of <br /> the BLDC motor. The parameters , , , λ and µ of these controller are optimized based on genetic algorithm. The optimized coefficients keep in track with zero error signals. The output of the controller is given to the variable dc source which varies the input voltage to the three phase inverter depending on the input signal. The three phase inverter gives the voltage to the BLDC motor which enhances the stability of the system. <br /> The effectiveness of the controller is demonstrated by simulation.

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A three-phase AC-DC converter using universal input voltage type PFC circuit and phase-shift controlled DC-DC converters

Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344) ◽

10.1109/ias.2002.1043823 ◽

2003 ◽

Cited By ~ 1

Author(s):

K. Mino ◽

S. Igarashi ◽

K. Kazuo

Keyword(s):

Phase Shift ◽

Input Voltage ◽

Three Phase

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Dynamic Effect of Input-Voltage Feedforward in Three-Phase Grid-Forming Inverters

Energies ◽

10.3390/en13112923 ◽

2020 ◽

Vol 13 (11) ◽

pp. 2923

Author(s):

Matias Berg ◽

Tomi Roinila

Keyword(s):

Feedforward Control ◽

Dynamic Effect ◽

Input Voltage ◽

Input Admittance ◽

Proposed Model ◽

Three Phase ◽

Low Pass ◽

A Minor ◽

Element Theorem ◽

Minor Improvement

Grid-connected and grid-forming inverters play essential roles in the utilization of renewable energy. One problem of such a converter system is the voltage deviations in the DC-link between the source and the inverter that can disrupt the inverter output voltage. A common method to prevent these voltage deviations is to apply an input-voltage feedforward control. However, the feedforward control has detrimental effects on the inverter dynamics. It is shown that the effect of the feedforward in the input-to-output dynamics is not ideal due to the delay in the digital control system. The delay affects the input-to-output dynamics at high frequencies, and only a minor improvement can be achieved by low-pass filtering the feedforward control signal. Furthermore, the feedforward control can remarkably affect the inverter input admittance, and therefore, impedance-based stability problems may arise at the DC interface. This paper proposes a method based on linearization and extra element theorem to model the effect of the feedforward control in the inverter dynamics. Experimental measurements are shown to demonstrate the effectiveness of the proposed model.

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Control for Three-Phase LCL-Filter PWM Rectifier with BESS-Oriented Application

Energies ◽

10.3390/en12214093 ◽

2019 ◽

Vol 12 (21) ◽

pp. 4093 ◽

Cited By ~ 2

Author(s):

Mora ◽

Núñez ◽

Visairo ◽

Segundo ◽

Camargo

Keyword(s):

Storage System ◽

Input Voltage ◽

Voltage Regulation ◽

Current Control ◽

Loop Current ◽

Pwm Rectifier ◽

Lcl Filter ◽

Loop Control ◽

Practical Applications ◽

Three Phase

This paper deals with a battery energy storage system (BESS) in only one of its multiple operating modes, that is when the BESS is charging the battery bank and with the focus on the control scheme design for the BESS input stage, which is a three-phase LCL-filter PWM rectifier. The rectifier's main requirements comprise output voltage regulation, power factor control, and low input current harmonic distortion, even in the presence of input voltage variations. Typically, these objectives are modeled by using a dq model with its corresponding two-loop controller architecture, including an outer voltage loop and a current internal loop. This paper outlines an alternative approach to tackle the problem by using not only an input–output map linearization controller, with the aim of a single-loop current control, but also by avoiding the dq modeling. In this case, the voltage is indirectly controlled by computing the current references based on the converter power balance. The mathematical model of the three-phase LCL-filter PWM rectifier is defined based on the delta connection of the filter, which accomplishes the requirements of a 100 kW BESS module. Extensive simulation results are included to confirm the performance of the proposed closed-loop control in practical applications.

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