Current-source 1-Ph inverter design for aircraft applications

2020 ◽  
Vol 92 (8) ◽  
pp. 1295-1305
Author(s):  
Eralp Sener ◽  
Gurhan Ertasgin
Keyword(s):  
Pulse Width Modulation ◽  
High Efficiency ◽  
Current Source ◽  
Sine Wave ◽  
Constant Current ◽  
Constant Current Source ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Content Type ◽  
Loop Control

Purpose This paper aims to present an inverter with a current-source input for 400 Hz avionic systems to have a system which removes DC-link capacitors and presents a high efficiency. Design/methodology/approach A battery-powered DC link inductor generates a constant-current source. A single high-frequency switch is used to provide a sinusoidally modulated current before the inverter. The output of the switch is “unfolded” by a thyristor-based H-bridge inverter to generate an AC output current. The system uses a CL low-pass filter to obtain a 400 Hz pure sine wave by removing pulse width modulation components. Findings Simulations and Typhoon HIL real-time experiments were performed with closed-loop control to validate the proposed inverter concept while meeting the critical standards of MIL-STD-704F. Originality/value This current source inverter topology is suitable for avionic systems that require 400 Hz output frequency. The topology uses small DC-link inductor and eliminates bulky capacitor which determines the inverter lifetime.

Design of a Sine Sweeping Constant Current Source Based FPGA and DDS

2014 ◽  
Vol 936 ◽  
pp. 2230-2234
Author(s):  
Ya Ping Yu ◽  
Hui Zhao ◽  
Yuan Liu ◽  
Ren Jie Yang ◽  
Gui Mei Dong ◽  
...  
Keyword(s):  
Frequency Control ◽  
Current Source ◽  
Sine Wave ◽  
Constant Current ◽  
Constant Current Source ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Fpga Chip ◽  
Sine Wave Generator

This paper designed a range of 0.1 ~ 250 kHz sine wave sweeping constant current source, which sine wave generator based on FPGA chip and DDS technology, the desired sine wave frequency was obtained by controlling the frequency control words. Low-pass filter circuit was realized by using the LTC1560-1, conversion circuit from the voltage to the current was consisted of a Howland current pump. The constant current source shows a good spectral impedance purity and amplitude.

Design and Application of the Testing System for a New Pipe Pressure Sensor

2014 ◽  
Vol 904 ◽  
pp. 395-398
Author(s):  
Xiao Ming Zhang ◽  
Yi Yuan ◽  
Jian Min Liu
Keyword(s):  
Data Acquisition ◽  
Pressure Sensor ◽  
Dynamic Pressure ◽  
Current Source ◽  
Test System ◽  
Constant Current ◽  
Measured Signal ◽  
Constant Current Source ◽  
Pass Filter ◽  
Low Pass Filter

The new pipe pressure sensor is a clamp-on ICP (Integrated Circuit Piezoelectric) type dynamic pressure sensor, mainly for the clamp-on pressure testing of high pressure fuel pipe. In testing, the vibration of the fuel injection pumps and diesel engine will disturb the clamp-on pressure signals, resulting in one of the measured signal to noise ratio is low, the second is the test system, in particular the signal transmission have a significant impact. In response to these problems, designed a PCI data acquisition card building-in constant-current source and special low pass filter, and developed the corresponding data acquisition software based on C++ Builder. The bench and real vehicle testing show: the test system can better fit with the new type pressure sensor to obtain accurate clamp-on pressure signals.

Design of Constant Current Source Based on Pulse Width Modulation

2013 ◽  
Vol 645 ◽  
pp. 418-421
Author(s):  
Li Hui Sun ◽  
Shu Jing Wang ◽  
Wei Chen
Keyword(s):  
High Precision ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Current Source ◽  
Constant Current ◽  
Output Current ◽  
Constant Current Source ◽  
Current Output ◽  
High Conversion Efficiency ◽  
Working Principle

Design of the constant current source based on pulse width modulation, and its working principle are discussed. The design can adjust the output current through pulse width modulation (PWM), and realize micro regulation by feedback output which stabilizes current output. The constant current source has some advantages of high precision, stable work, high conversion efficiency.

Study on Hi-Power Precision Driving Power of Giant Magnetostrictive Actuator Based on Power Amplifiers

2011 ◽  
Vol 121-126 ◽  
pp. 2293-2298
Author(s):  
Yong Li ◽  
Cheng Rui Zhang ◽  
Xin Zhong Ding ◽  
Peng Zhai ◽  
Jing Wu
Keyword(s):  
High Efficiency ◽  
Current Source ◽  
Constant Current ◽  
Source Analysis ◽  
Output Current ◽  
Constant Current Source ◽  
Giant Magnetostrictive Material ◽  
Large Current ◽  
Magnetostrictive Actuator ◽  
Large Output

According to the driving characteristics of giant magnetostrictive material and the principle of constant current source analysis, the continuously adjustable driving power was developed by adopting the principle of constant current, selecting power operational amplifier, and using parallel flow technology to expand its output current, which had a large current, large output power, high efficiency and low power consumption. And through the actual test, the driving power of giant magnetostictive actuator reveals a good performance.

Design of DFB Laser Drive and Temperature Control Circuit in TDLAS Gas Concentration Detection

2020 ◽  
Author(s):  
Haoqing Yang ◽  
Xiongzhu Bu ◽  
Yihan Cao ◽  
Yang Song
Keyword(s):  
Temperature Control ◽  
Detection System ◽  
Current Source ◽  
Sine Wave ◽  
Control Circuit ◽  
Constant Current ◽  
Temperature Control System ◽  
Constant Current Source ◽  
Dfb Laser ◽  
On Chip

Abstract In order to satisfy the requirements of TDLAS gas measurement, the DFB laser drive and temperature control system is designed with taking STM32F103RCT6 as the main control chip, including sine wave and sawtooth signal generation circuit, temperature acquisition circuit and temperature control circuit, etc. The sine wave and the sawtooth wave signal are respectively generated by using the DDS chip and the STM32 on-chip DAC, and the two are superimposed to control the constant current source to drive the laser. At the same time, the internal temperature of the laser is collected and controlled. The DFB laser with a center wavelength of 1653.7 nm is used to verify the CH4. The experiment proves that the system can generate stable laser driving signals and achieve precise temperature control. The temperature control accuracy can reach ±0.013 °C. The design satisfies the requirements of TDLAS gas detection system for laser driving and temperature control.

scholarly journals Research on Power Stability Control of Semiconductor Laser

2018 ◽  
Vol 232 ◽  
pp. 04086
Author(s):  
Qian Guo ◽  
Xiaodong Zhang ◽  
Fengnian Tian
Keyword(s):  
Semiconductor Laser ◽  
Current Source ◽  
Optical Power ◽  
Stability Control ◽  
Working Environment ◽  
Constant Current ◽  
Constant Current Source ◽  
Loop Control ◽  
The Stability ◽  
Hardware Circuit

In order to guarantee the stable emission power and good working environment of semiconductor laser, a new hardware circuit is selected and designed to realize automatic optical power control, in which a negative feedback operation amplifier circuit is adopted to form the constant current source, and an optoelectronic feedback to realize closed loop control in this paper. And then, the corresponding steady control circuit is also designed, so that the stable power can be output. The experimental results show that the stability of laser power is better than 0.74% when the system works.

Design and Simulation of LED Drive Power Supply Based on ARM

2012 ◽  
Vol 588-589 ◽  
pp. 936-939
Author(s):  
Hong Li Cheng ◽  
Xiao Dan Ren ◽  
Shuai Sun
Keyword(s):  
Power Supply ◽  
High Efficiency ◽  
Current Source ◽  
Constant Current ◽  
Voltage Source ◽  
Drive Power ◽  
Small Current ◽  
Constant Current Source ◽  
Pid Algorithm ◽  
In Series

This paper introduces a kind of numerical controlled LED drive power supply based on ARM7. User can set the number and brightness of the LEDs to be lit by the remote control. Switching voltage source and the linear constant current source are connected in series, this circuit structure can ensure high efficiency and small current ripple. ARM7 completes the data collection, fuzzy PID algorithm processing, and real-time output adjustment. This paper explains the working principle of the system in detail and then simulates it in the simulink. The results show that it can satisfy the users' diverse requirements well and give full play to the convenience and controllability of the digital controller.

Development of a Microcontroller Based Low Distortion Modified Push-Pull Power Inverter

2016 ◽  
Vol 6 ◽  
pp. 12
Author(s):  
Abiodun Alani Ogunseye ◽  
Taofik Titus Ogunseye
Keyword(s):  
High Efficiency ◽  
Harmonic Distortion ◽  
Sine Wave ◽  
Total Harmonic Distortion ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Square Wave ◽  
Low Pass ◽  
Low Distortion ◽  
Low Efficiency

Abstract— Some measures of merit of an inverter system are the total harmonic distortion and the efficiency figures. On one hand, we have square wave and modified square wave inverters that have high efficiency and total harmonic distortion (THD) figures. On the other hand, there are the true sine wave inverters that have low THDs and relatively low efficiency figures at high output power levels. In this work, a five level waveform that can be synthesized efficiently was analysed for low distortion figures, and a THD figure of 1.25% was obtained. A microcontroller-based inverter circuit was designed to synthesize this waveform from a 12 volts d.c source. The microcontroller firmware and hardware were developed using MicroC® and Proteus® softwares respectively. The developed circuit generated a 50 Hz sinusoidal output waveform from a 12 volts battery source after filtering with an LC low pass filter.    

Study on the Driving Circuit of Carbon Nanotube Field Emission Display Based on Luminance Control

2014 ◽  
Vol 635-637 ◽  
pp. 1109-1113
Author(s):  
Qiao Ping Liu ◽  
Yan Ning Yang ◽  
Wei Xia Li
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Pulse Width Modulation ◽  
Current Source ◽  
Constant Current ◽  
Display Device ◽  
Si Substrate ◽  
Field Emission Display ◽  
Constant Current Source ◽  
Driving Circuit

Carbon nanotube field emission display (CNT-FED) is one of the most significant subjects due to its unique qualities and perfect performance. But there are still some problems in FED, for example, the modulation of each pixel unit of field emission display device is discrete, and the traditional voltage pulse-width modulation driving mode cannot solve luminance non-uniformity and non-linearity of FED. So a novel driving circuit based on cathode current source is proposed. The current driving circuit can be fabricated on Si substrate in advance, and then carbon nanotube is grown at room temperature, carbon nanotube and constant current source circuits are integrated on the same Si substrate. Current source circuit and cathode emission part are integrated together, which not only can solve the FED luminance problem, but also can meet FED thin design.

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