A NOVEL CRM PFC CONTROL METHOD FOR REDUCING INDUCTOR

2014 ◽  
Vol 23 (03) ◽  
pp. 1450038 ◽  
Author(s):  
LING-FENG SHI ◽  
HUI-LI GUAN ◽  
QIN-QIN LI ◽  
XIN-QUAN LAI
Keyword(s):  
Control System ◽  
Control Method ◽  
Input Voltage ◽  
The Novel ◽  
Voltage Range ◽  
Low Input ◽  
The Core ◽  
Large Size ◽  
Control Circuits ◽  
Conduction Mode

A novel control method for the critical conduction mode (CRM) power factor correction (PFC) converter is presented, which reduces the size of the boost inductor in the system with wide input-voltage range and improves the efficiency of the system with low input voltage. By introducing the following boost circuit, the output voltage in the application circuit varies with the input root mean square (RMS) voltage to reduce the demand for the large size of the inductor and the efficiency of the system keeps high under the low input voltage. A novel CRM PFC control system with smaller size inductor and higher efficiency is achieved by applied the following boost method to the core control circuits. Experiment results show that the inductance value of the boost inductor is 430 μH using the presented PFC control system and 700 μH using the traditional PFC control system when the input voltage varies from 85 V to 265 V. The novel control method decreases the inductor's value at 38.2%, and the efficiency of the system improves at 1.62% under the input voltage of 85 V.

scholarly journals Efficiency Enhancement of Flexible Mode Bridgeless Boost Rectifier

2019 ◽  
Vol 9 (2) ◽  
pp. 1503-1508
Keyword(s):  
Power System ◽  
Input Voltage ◽  
Efficiency Enhancement ◽  
Fast Recovery ◽  
High Input ◽  
Voltage Range ◽  
Low Input ◽  
Flexible Mode ◽  
Simulation Results ◽  
Boost Rectifier

Most of the devices in power system become faulty due to the large content of harmonics present in voltage and current. It is mainly caused by the conduction losses in the system. At first, it is necessary to determine the extent of harmonic present by calculating the total harmonic distortions i.e., root over sum of the integral harmonics divide by fundamental harmonic. Later, identification of type of method for reducing harmonics is essential. In this project we are mainly focusing on two types of PFC bridge boost rectifier to improve the efficiency for low and high input voltage range. It using back to back bridgeless PFC boost rectifier for high input voltage and for low input voltage range, three level bridgeless boost rectifiers respectively. Fast recovery diode instead of normal diodes for better reliability and efficiency is utilized. The end model is obtained by combining two circuits BTBBL (Back to back bridgeless boost PFC) and TLBL (Three level bridgeless boost PFC) to get the FMBL (Flexible mode bridgeless boost PFC). Due to presence of less no of components, conduction losses are less hence less distortion is observed with improved efficiency. A simulation is carried out for all three models using MATLAB Simulink platform. In hardware, TLP250 driver for MOSFET is used and which is interfaced with PIC microcontroller. The hardware results are obtained that validates the simulation results.

scholarly journals Improved Modulated Carrier Controlled PFC Boost Converter Using Charge Current Sensing Method

Energies ◽  
2018 ◽  
Vol 11 (4) ◽  
pp. 717 ◽  
Author(s):  
Jintae Kim ◽  
Chung-Yuen Won
Keyword(s):  
Control Method ◽  
Harmonic Distortion ◽  
Control Unit ◽  
Input Voltage ◽  
Boost Converter ◽  
Current Sensing ◽  
Voltage Range ◽  
Zero Current ◽  
Voltage Amplifier ◽  
Current Duration

An improved modulated carrier control (MCC) method is proposed to offer high power factor (PF) and low total harmonic distortion (THD) at a wide input voltage range and load variation. The conventional MCC method not only requires a multiplier and divider, but also is hard to be implemented with a micro controller unit without a high frequency oscillator. To overcome the problem and maintain the advantages of the conventional MCC method, the proposed MCC method adopts a current integrator, an output voltage amplifier, a zero-current duration (ZCD) demodulator of the boost inductor, and a carrier generator. Thus, it can remove a multiplier and well, as it allows for being operable with a general micro control unit. This paper presents an operation principle of the proposed control method. To verify the proposed control method, experimental results with 400 W PFC boost converter is demonstrated.

TOWARD A PLUG-AND-PLAY APPROACH FOR ACTIVE POWER FACTOR CORRECTION

2004 ◽  
Vol 13 (03) ◽  
pp. 599-612
Author(s):  
ILYA ZELTSER ◽  
SAM BEN-YAAKOV
Keyword(s):  
Power Factor ◽  
Control Method ◽  
Power Factor Correction ◽  
Input Voltage ◽  
Active Power ◽  
The Novel ◽  
Plug And Play ◽  
Control Scheme ◽  
Design And Manufacturing ◽  
The Cost

The feasibility of producing a modular Active Power Factor Correction (APFC) system was studied analytically and experimentally. It is shown that the novel control scheme that does not need the sensing of the input voltage is highly compatible with the modular, plug-and-play concept. Modularity is achieved by aggregating practically all the electronics in an IC or hybrid unit that may also include the power switch. This unit plus a line rectifier, inductor and bus capacitor are all that it takes to form an APFC system. It is demonstrated that dynamic stability is assured by the proposed inherent robust control method. This plug-and-play solution will greatly simplify and reduce the cost of the design and manufacturing of APFC front ends.

scholarly journals The novel control method of switched reluctance generator

2017 ◽  
Vol 66 (2) ◽  
pp. 409-422
Author(s):  
Piotr Bogusz
Keyword(s):  
Output Power ◽  
High Speed ◽  
Laboratory Tests ◽  
Control Method ◽  
Control Function ◽  
The Novel ◽  
Switched Reluctance ◽  
Conduction Mode ◽  
Continuous Conduction Mode

AbstractIn the paper, a novel control method of a switched reluctance generator was discussed. The presented control method allows a rotor rotating at high speed to enter the continuous-conduction mode which causes an increase of generated output power. A control function of the presented method was given as well as simulation and laboratory tests.

Embedded Arm-Based Control System Design for Automatic Strapping Machines

2014 ◽  
Vol 687-691 ◽  
pp. 3153-3157
Author(s):  
Jiang Ping Huang ◽  
Zheng Dong Wang ◽  
Wen Ze Yu ◽  
Kai He ◽  
Ru Xu Du
Keyword(s):  
Control System ◽  
System Design ◽  
Control Method ◽  
General Structure ◽  
Control System Design ◽  
Electronic Components ◽  
Simple Operation ◽  
The Core ◽  
Arm Microprocessor ◽  
Working Performance

A design of an embedded ARM-based control system for automatic strapping machine is described. This control system uses embedded ARM microprocessor as the core processor, which consists of a STM32 ARM chip and other electronic components. It introduces the general structure, the control method and the implementation of the control system in this paper. The system has many advantages, such as simple and reasonable circuit, stable working performance, simple operation, etc.

A Novel Single-Ended Flyback High Frequency Regulated LED Driver Power Supply

2012 ◽  
Vol 542-543 ◽  
pp. 997-1000 ◽  
Author(s):  
Jin Jian Zhang ◽  
Xian Song Fu ◽  
Ping Juan Niu ◽  
Yi Li Liu
Keyword(s):  
Power Supply ◽  
Current Mode ◽  
Input Voltage ◽  
The Novel ◽  
Switching Power Supply ◽  
Led Driver ◽  
Voltage Range ◽  
Switching Power ◽  
Battery Chargers ◽  
Switched Mode Power Supply

A steady output single-ended flyback switching power supply using L6561 current mode PWM controller designed in this paper. The designed circuit consists of single-ended flyback topology and based on the peak current PWM technology. The circuit has input voltage range from 85V AC to 265V AC and about output drive capability of 12V/2A. Based on the specific chip L6561, the novel single-ended flyback AC/DC converting circuit is adapted for mobile or office equipment, off-line battery chargers. The low-power Switched-Mode Power Supply (SMPS) are the most noticeable examples of application that this configuration can fit. The testing results show that the design of this method can reduce the switching power supply ripple, and ensure stable voltage output.

Design of the Control Circuit of C516 Vertical Lathe on PLC

2011 ◽  
Vol 127 ◽  
pp. 355-359
Author(s):  
Xiu Min Cui
Keyword(s):  
Software Design ◽  
Production Efficiency ◽  
Control Method ◽  
Control Circuit ◽  
Design Practice ◽  
High Failure Rate ◽  
Relay Control ◽  
Large Size ◽  
Plc Control ◽  
Control Circuits

C516 vertical lathe control circuit uses relay control method, which has disadvantages including large size, complex wiring, high failure rate, and maintenance difficulties. To solve these problems, designing a C516 vertical lathe control circuit based on PLC,. Also describes the electronic requirements of the control circuits, basis of PLC selection, the hardware connection and software design. Practice has showed that the use of PLC control circuit is simple, reliable and highly improves the production efficiency.

scholarly journals Fuzzy Sliding Mode Control of DC-DC Boost Converter

2018 ◽  
Vol 8 (3) ◽  
pp. 3054-3059 ◽  
Author(s):  
Z. B. Duranay ◽  
H. Guldemir ◽  
S. Tuncer
Keyword(s):  
Control System ◽  
Fuzzy Logic Control ◽  
Control Method ◽  
Sliding Mode ◽  
Input Voltage ◽  
Boost Converter ◽  
Fuzzy Sliding Mode Control ◽  
Load Variations ◽  
Logic Control ◽  
Fuzzy Sliding Mode

A sliding mode fuzzy control method which combines sliding mode and fuzzy logic control for DC-DC boost converter is designed to achieve robustness and better performance. A fuzzy sliding mode controller in which sliding surface whose reference is obtained from the output of the outer voltage loop is used to control the inductor current. A linear PI controller is used for the outer voltage loop. The control system is simulated using Matlab/Simulink. The simulation results are presented for input voltage and load variations. Simulated results are given to show the effectiveness of the control system.

scholarly journals Synchronous Control Strategy with Input Voltage Feedforward for a Four-Switch Buck-Boost Converter Used in a Variable-Speed PMSG Energy Storage System

Electronics ◽  
2021 ◽  
Vol 10 (19) ◽  
pp. 2375
Author(s):  
Liuchen Tai ◽  
Mingyao Lin ◽  
Jianhua Wang ◽  
Chongsheng Hou
Keyword(s):  
Control System ◽  
Energy Storage ◽  
High Efficiency ◽  
Storage System ◽  
Synchronous Generator ◽  
Input Voltage ◽  
Energy Storage System ◽  
Variable Speed ◽  
Load Current ◽  
Voltage Range

The four-switch Buck-Boost (FSBB) converter can produce voltage conversion within a wide input voltage range, which is suitable for variable-speed permanent magnet synchronous generator (PMSG) energy storage systems with AC inputs and DC outputs. To reduce the interference of input voltage fluctuation on the performance of the FSBB converter, an input voltage feedforward (IVFF) compensation method is proposed in this paper. The switching synchronization strategy is simple. Using the switching average model, the small signal model of a non-ideal FSBB converter in all working modes is established. The effects of input voltage, load current, damping coefficient and right half plane (RHP) zero on the stability of the control system are analyzed in detail. The transfer function of the IVFF of the FSBB converter is derived, and the relationship between input voltage, load current and duty cycle is analyzed. Finally, the design of the parameters of the converter control system is presented. The simulation and experimental results show that this FSBB converter has high efficiency and a good transient response.

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