scholarly journals Application of two-phase hybrid stepping motor based on three-phase inverter chopping control strategy in aircraft electric drive servo valve

2021 ◽  
Vol 2137 (1) ◽  
pp. 012011
Author(s):  
Mingliang Hu ◽  
Wei Han ◽  
Wei Gao ◽  
Yang Liu
Keyword(s):  
Open Loop ◽  
Stepper Motor ◽  
Area Network ◽  
Two Phase ◽  
Loop Control ◽  
Phase Inverter ◽  
Servo Valve ◽  
Three Phase ◽  
Hybrid Stepping Motor ◽  
Three Phase Inverter

Abstract With the development of multi-/all-electric technology, more and more aircraft platforms use electrically driven servo valves as the driving source to realize real-time adjustments of flow, pressure and temperature in the area network. The new generation of aircraft applies a stepper motor to drive the servo valve as the drive source, and utilizes the holding torque and open-loop control characteristics of the stepper motor when the stepper motor could not meet aircraft’s requirements of the reliability of the servo valve, the controllability of the opening and closing angle, and the environmental resistance. This paper develops a set of stepper motor drive servo valve control system. The system is mainly composed of flight tube bus, electromechanical management computer, remote actuation unit, remote interface unit and motor-driven servo valve. The stepper motor driver is integrated in the remote execution unit and is used to control the two-phase hybrid stepper motor to drive the servo valve. The topology of a three-phase inverter bridge drive is used to achieve the two-phase double four-shot drive, which saves about 25% power drive hardware. By controlling the two-phases motor, the direction and amplitude of the current one can realize micro-step control. The test and simulation result show that the system has higher control accuracy and better acceleration. The deceleration characteristics in two-phase full step and micro step working modes can expand the application of electric servo valve and improve aircraft performance.

Research of symmetrical voltages and phase of three-phase inverter with dual-loop control

2008 ◽  
Author(s):  
Xiang-Dong Lai ◽  
Yan-Gang Qu ◽  
Yun-Ping Zou ◽  
Yao-Jun Chen ◽  
Yan-Ping Zhong
Keyword(s):  
Loop Control ◽  
Phase Inverter ◽  
Three Phase ◽  
Three Phase Inverter

The Model of Distributed Grid-Connected DC Micro Network Inverters and Double Loop Control Method

2013 ◽  
Vol 760-762 ◽  
pp. 1131-1135
Author(s):  
Jian Ye Liu ◽  
Chang Ge Tian ◽  
Shan Shan Jiang ◽  
Zhi Peng Ge
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Double Loop ◽  
Small Signal ◽  
Loop Control ◽  
Pwm Inverter ◽  
Phase Inverter ◽  
Analysis And Design ◽  
Three Phase ◽  
Three Phase Inverter

In this paper, for parallel operation of the three-phase PWM inverter control system, we put forward and set up the equivalent grid inverter mathematical model. In the process of grid inverter equivalent model is discussed, for the three-phase inverter system is a nonlinear system, in order to facilitate the performance of the system analysis and design of the control system, the transfer function of the system were analyzed to the linearized system. After the linearization control the theory system can be discussed using the method of classical. On the premise of system average model we get the static working point system, according to the law of small signal, we can obtain the small signal mathematical model .At the same time, discusses the three phase inverter design of double loop control system.

scholarly journals Development of a control algorithm for the three-phase inverter of the two-phase electric drive for reducing the number of switching elements

Vestnik IGEU ◽  
2019 ◽  
pp. 49-61 ◽  
Author(s):  
V.N. Meshcheryakov ◽  
A.S. Belousov
Keyword(s):  
Electric Drive ◽  
Frequency Converter ◽  
Current Control ◽  
Two Phase ◽  
Phase Inverter ◽  
Electric Drives ◽  
Electric Drive System ◽  
Three Phase ◽  
Three Phase Inverter ◽  
Starting Torque

High overload capacity and ability to control speed in a wide range are important requirements for modern electric drives. Introduction of a low-power adjustable two-phase electric drive with these properties into me-chanical devices is limited by the frequency converter function to convert a three-phase network into a two-phase one when the unit power of such mechanisms increases. Previous studies have shown that it is possible to use a standard frequency converter with a three-phase bridge voltage inverter applying a new control algorithm based on space-vector PWM. When PWM is used, the switching frequency of the key inverter elements remains quite high, strictly specified, non-amenable to reduction without degrading the harmonic composition. The goal of this work is to develop an algorithm for two-phase electric drive control that would reduce the number of switching operations of the switch elements of a three-phase inverter with-out increasing the deviations of the instantaneous values of the phase currents from the reference sine curve. The study employed provisions of the theory of automatic control, the theory of electric drive and methods of mathematical modeling. The simulation object was the control system of a two-phase motor; the elements of the Matlab Simulink software package were used. An algorithm has been proposed for operating a three-phase inverter of a two-phase electric drive system. The difference of the algorithm from the well-known control system of a standard bridge inverter with space vector PWM consists in using phase current control relays and dividing the period of sinusoidal phase currents into four sections ensuring a decrease in the number of switching operations of the inverter switch elements when the maximum instantaneous deviations of current values from a sinusoidal reference are equal, the starting torque of the motor is stabilized and the speed control is smooth. The results show that with an equal maximum deviation of the instantaneous current values from a given sinusoidal value, the number of switching operations of the inverter switch elements in the proposed system is smaller than in the known analogues. The electric drive system ensures the start of a two-phase motor with stabilization of the starting torque under increased load. The considered system of variable frequency control with current control relays can be used for two-phase electric drives of mechanical devices and household electric appliances and is promising as a substitute for less cost-effective single-phase and capacitor motors.

scholarly journals Control Strategy of Photovoltaic Grid Connected System Based on PI and QPR Double Closed Loop Control

2021 ◽  
Vol 2136 (1) ◽  
pp. 012017
Author(s):  
Shengqing Li ◽  
Na Deng ◽  
Jian Zheng ◽  
Jiaxing Yu
Keyword(s):  
Control Strategy ◽  
Closed Loop ◽  
System Stability ◽  
Closed Loop Control ◽  
Static Error ◽  
Loop Control ◽  
Phase Inverter ◽  
Suppression Effect ◽  
Three Phase ◽  
Three Phase Inverter

Abstract The traditional proportional integral (PI) controller in photovoltaic three-phase inverter system has the problems of no static error tracking and poor resonance suppression effect. In order to improve the resonance suppression effect and current control effect of photovoltaic three-phase inverter system, a control strategy of photovoltaic three-phase inverter system based on PI and quasi proportional resonance (QPR) double closed-loop control is proposed. The control strategy and control block diagram based on PI and QPR double closed-loop control are designed to realize no static error tracking of incoming current, which has better waveform of incoming current and resonance suppression effect, and improves system stability. Finally, the effectiveness of the control strategy are verified by simulation.

COMPONENT MINIMIZED TOPOLOGY OF DC TO THREE-PHASE INVERTER

2004 ◽  
Vol 13 (04) ◽  
pp. 863-875 ◽  
Author(s):  
MIRO MILANOVIC ◽  
FRANC MIHALIC ◽  
DRAGO DOLINAR
Keyword(s):  
Phase Transformation ◽  
Theoretical Analysis ◽  
Single Phase ◽  
Main Element ◽  
Two Phase ◽  
Phase Inverter ◽  
Three Phase ◽  
Phase Converter ◽  
Inverter Topology ◽  
Three Phase Inverter

A DC to three-phase converter based on using a two-phase to three-phase transformation has been developed. To provide a better understanding of the operation principle, the transformer, which is the main element of the system, has been supplied by two single-phase inverters. According to this, the theoretical analysis of the proposed system is shown. This analysis is based on two-phase to three-phase transformation. The theoretical analysis and the experimental verification of the proposed principle are presented. In this paper the component minimized inverter topology is also proposed.

Sign in / Sign up

Export Citation Format

Share Document