Design of Portable On-Board Charger

2012 ◽  
Vol 229-231 ◽  
pp. 837-840
Author(s):  
Deng Liang Cheng ◽  
Wei Rong Jiang ◽  
Jian Wei Mei
Keyword(s):  
Pulse Width ◽  
Parallel Machines ◽  
Pulse Width Modulation ◽  
Control Mode ◽  
Constant Current ◽  
System Control ◽  
Single Chip ◽  
Battery Charging ◽  
Loop Control ◽  
Bus Voltage

To solve the key technology of automotive lithium battery charging system, a new kind of smart portable on-board charger is developed. This battery charger takes single-chip machine of freescale as system control chip, realizes closed-loop control of bus voltage by the voltage pulse width modulation chip TL494, realizes charger output with constant voltage, constant current and switch without disturbances by the current pulse width modulation chip UC3846, achieves master-slave control mode for multi–parallel machines through the CAN bus technology. In addition, the microcontroller program realizes the process monitoring and fuzzy PID regulation, the charging process has multiple intelligent protection and external regulatory functions. The experimental results show that with dual regulations of the software and hardware, the charger has the advantages of stable reliability, flexible operation and precise intelligence, an effective exploration of the battery charging technology is carried out.

Material Removal Rate Control in Open-Air Type Plasma Chemical Vaporization Machining by Pulse Width Modulation of Applied Power

2014 ◽  
Vol 625 ◽  
pp. 593-596
Author(s):  
Yoshiki Takeda ◽  
Yuki Hata ◽  
Katsuyoshi Endo ◽  
Kazuya Yamamura
Keyword(s):  
Material Removal Rate ◽  
Pulse Width ◽  
Material Removal ◽  
Pulse Width Modulation ◽  
Removal Rate ◽  
Scanning Speed ◽  
Control Mode ◽  
Pwm Control ◽  
Rf Power ◽  
Plasma Chemical

Plasma chemical vaporization machining (PCVM) is an ultraprecise figuring technique for optical components without introducing the subsurface damage. In our previous study, the material removal volume was controlled by changing the scanning speed of the worktable. However, because of inertia of the worktable, a discrepancy between the theoretical scanning speed and the actual scanning speed will occur if the spatial change rate of speed is rapid. Therefore, we proposed the application of the pulse width modulation (PWM) control and the amplitude modulation (AM) control of the applied RF power to control the material removal rate (MRR). Experimental results showed that the relationship between the MRR and the average RF power had high linearity, the control range of the PWM control mode was from 0.19 x 10-2 mm3/min to 3.90 x 10-2 mm3/min (from 5% to 100%), which was much wider than that of the AM control mode.

scholarly journals Analysis of Sinusoidal Pulse Width Modulation Parameter Settings in High Precission Closed Loop Full Bridge Bipolar Inverters for High Voltage High Frequency Generator

Teknik ◽  
2020 ◽  
Vol 41 (1) ◽  
pp. 55-61
Author(s):  
Abdul Syakur ◽  
Arifin Wibisono
Keyword(s):  
High Voltage ◽  
High Frequency ◽  
Pulse Width ◽  
Large Scale ◽  
Closed Loop ◽  
Pulse Width Modulation ◽  
Waste Treatment ◽  
Electrical Energy ◽  
Loop Control ◽  
Sinusoidal Pulse Width Modulation

The application of high voltage becomes more important and wider. High voltage is needed in the process of reducing air contaminants, waste treatment, sanitation, disinfecting microorganisms, testing for insulating high voltage equipment, and transmitting electrical energy. The problem of high voltage AC generation system is still in a large scale, static, not portable, and very expensive. This paper presents an analytical design of a high-voltage AC high-frequency based on power electronic. It is portable, less expensive, and eaasier to control the amplitudo and frequency. The application of the Full Bridge Bipolar Inverter topology with the Sinusoidal Pulse Width Modulation switching method provides variable sinusoidal AC voltage outputs (Vo) on its amplitude and frequency. The Tesla Coil Transformer amplifies the amplitude in accordance with the classification of the high voltage AC in the order of Kilo Volt. The Closed Loop control system in the Bipolar Inverter Full Bridge topology provides high accuracy results between the given setting values and the actual amplitude output and the expected high-frequency AC voltage. Analysis of the SPWM switching pattern parameter settings shows stability for several loading variations

Design and analysis of customised pulse width modulation based dc–dc converter for EV battery charging application

2020 ◽  
Vol 13 (16) ◽  
pp. 3549-3559
Author(s):  
Manaswi Srivastava ◽  
Arun Kumar Verma ◽  
Pavan Singh Tomar
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Battery Charging

Modeling and Analysis of Arc Weld Inverter Based on Double Closed-Loop Control

2010 ◽  
Vol 36 ◽  
pp. 109-114
Author(s):  
Kuan Fang He ◽  
Ji Gang Wu ◽  
Xue Jun Li
Keyword(s):  
Power Supply ◽  
Closed Loop ◽  
Dynamic Performance ◽  
Mathematic Model ◽  
Current Control ◽  
Soft Switching ◽  
Control Mode ◽  
Constant Current ◽  
Optimized Design ◽  
Loop Control

According to the soft-switching pulsed SAW (Submerged arc weld) weld power supply based on the double closed-loop constant current control mode, a small signal mathematic model of main circuit of soft-switching SAW inverter was established by applying the method of three-terminal switching device modeling method, and the mathematic model of double closed-loop phase-shift control system circuit was established by applying the method of state-space averaging method. Dynamic performance of the inverter was analyzed on base of the established mathematic model, and the tested wave of dynamic performance was shown by experimentation. Research and experimentation show that relation between structure of the power source circuit and dynamic performance of the controlling system can be announced by the established mathematic model, which provides development of power supply and optimized design of controlling parameter with theoretical guidance.

The Design of 25KV High-Frequency High-Voltage Power Supply

2014 ◽  
Vol 912-914 ◽  
pp. 927-930
Author(s):  
Qiang Jiang
Keyword(s):  
Power Supply ◽  
High Frequency ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
High Voltage Power Supply ◽  
Switch Power Supply ◽  
Switch Power ◽  
Inverter Topology

In this paper, a HV and HF switch power supply was designed, which was controlled through a single chip microcomputer, also the MOSFET was used as the switch power tube. The PWM (pulse width modulation) technique and half-bridge inverter topology have been used to invert AC into the DC that can be adjust from 0V~25KV and the operating frequency is 35KHz, Through the simulation with the Saber software and practical use, the feasibility of the scheme and the correctness of the design have been verified.

Two-Level Grid-Connected Discharge Inverter System of Power Battery Based on LLC

2014 ◽  
Vol 1070-1072 ◽  
pp. 1278-1281
Author(s):  
Yue Yu ◽  
Qiang Yin ◽  
Meng Xue Xie ◽  
Xiao Dan Ren
Keyword(s):  
Power Factor ◽  
Constant Current ◽  
Current Loop ◽  
Loop Control ◽  
External Voltage ◽  
Power Battery ◽  
High Power Factor ◽  
Dc Bus ◽  
Bus Voltage ◽  
Battery Discharge

In order to overcome the large amounts of energy waste in the process of power battery discharge, the two-level grid-connected discharge inverter system of power battery based on LLC is designed. It is composed of LLC resonant full-bridge DC/DC and inverter. The DC-bus voltage is changed and the discharge current is stabilized by adjusting the frequency of the LLC resonant full-bridge DC/DC. The dual-loop control is applied in the inverter system. The stabilization of DC-bus voltage is achieved in the external voltage loop, while the grid-connected is implemented by controlling the grid-connected current in the inner current loop. A prototype is manufactured. The experiment results indicate that it has the characteristics of low harmonic current, high power factor and constant current discharge, and then proves that the inverter system is effective.

scholarly journals Detailed Simulink implementation for induction motor control based on space vector pulse width modulation SVPWM

2021 ◽  
Vol 22 (3) ◽  
pp. 1251
Author(s):  
Taha A. Hussein ◽  
Laith A. Mohammed
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Supply Voltage ◽  
Permanent Magnet Synchronous Motor ◽  
Harmonic Distortion ◽  
Open Loop ◽  
Open Loop Control ◽  
Space Vector ◽  
Loop Control ◽  
Sinusoidal Pulse Width Modulation

Space vector pulse width modulation (SVPWM) generates less harmonic distortion in the output voltage or currents, provides more efficient use of supply voltage and better voltage utilization compared with sine pulse width modulation (PWM). In this work, a detailed Simulink implementation for SVPWM for the open loop control of permanent magnet synchronous motor (PMSM) is presented. Results show the output of the blocks that assembles SVPWM besides the PMSM voltages and currents when exposing the motor to different load torques. The technique of SVPWM enables the load to respond to the change in external load torque. This technique also results in lower total harmonic distortion and better utilization of the direct current (DC) supply compared with traditional sinusoidal pulse width modulation sinusoidal pulse width modulation (SPWM).

scholarly journals Implementation of a Smart Battery Charger Using LLC Resonant Converter

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
E.U. Nwosu
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Resonant Converter ◽  
Battery Charger ◽  
Battery Charging ◽  
Operational Conditions ◽  
Display Unit ◽  
Llc Resonant Converter ◽  
Terminal Voltage ◽  
Load Conditions

This research was influenced by the need to eradicate voltage selection error in manual battery-charging, as well as the necessity for getting more batteries charged within a short duration without compromising the cycle life of a battery. Minimizing human interference in charging of batteries as a means of making the process stress-free, safer and faster is also a motivation for this work. This paper presents a battery charger which takes accurate decisions by itself and eliminates poor charging parameters which can damage even brand new batteries. The battery charging unit automatically senses the battery terminal voltage(s), supplies appropriate charging voltage/current, and terminates charging process based on preset operational conditions of voltage, current and temperature. Key components of the developed prototype include PIC16F877A microcontroller chip, LLC resonant converter, and an LCD based display unit. The chip runs dedicated codes that control all tasks involved in the operation of the charger. Pulse-width modulation (PWM) technique was employed to control switching duty cycle which consequently varies the output of the converter and enables battery-charging from 6-volt to 48-volt. Before embarking on the actual constructions, simulations were done to evaluate the performance of the system. The model was subjected to tests under various load conditions and the results agreed with objectives of the research.

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