The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Variable structure control (VSC) theory is applied to analyze and design AC servo system for field-oriented permanent-magnet synchronous motor, which is based on Luenberger load observer. Some results of simulation experiments suggest that the AC servo system based on VSC has speedy response, high accuracy and strong robustness against its parameter variations and load disturbances. Its performance...
This paper presents some specific issues of a high speed permanent magnet synchronous motor control used in a combustion engine supercharger system. A description of a method designed to limit the load angle of synchronous motor in high speed is given. Also experimental results in dynamic states are shown. In these states mainly acceleration times and energy intensity with correlation on motor current...
Six-phase motors are widely used in industry, for they can be useful in increasing motor capacity with limit voltage level, and be more reliable in continuous operating and be more robust in performance controlling. Up to the present, there have been many researches on six-phase motors, and they are usually analyzed by analytical methods. However, most of six-phase motors are used with variable frequency...
This paper proposes a particular method for position velocity loops to solve the velocity control problem associated with conventional sliding mode control of permanent magnet synchronous motor (PMSM) servo system. The merits of conventional sliding mode control approach and PID control technique were introduced to design this novel controller for the position and velocity loops. The sliding mode...
In this paper, an intelligent electric power steering system use with Permanent magnet synchronous motor drive is proposed It is to replace a traditional hydraulic power steering system and implemented in a real light hybrid electric vehicle for automotive application. Some control Technique is applied to yield basic assist logic, return compensation logic, damping compensation logic, and inertia...
When the road header is working, because of different characteristics of coal and rock, in order to protect the cutting head, the speed of cutting head should be adjusted according to the load torque. In this paper, a method based on PLL for observing the load torque of cutting motor was proposed, and its simulation and experimental were studied. The method is simpler and more accurate compared to...
Permanent-magnet synchronous-motor is a multi-variable, non-linear, strong coupling system that is highly sensitive to the outer interfere and inter perturbation. To improve the system robustness, the adaptive back-stepping control of permanent magnet synchronous motor based on slide mode observer is put forward. Based on the mathematic model of permanent magnet synchronous motor and the theory of...
Torque pulsations exist in ring permanent torque motors, which seriously degrade the drive performance of system at low speeds. In view of the periodic nature of torque ripple, adopt fuzzy iterative learning control (F-ILC) controller to minimize the torque ripple. It records the torque error and the compensating reference current of last cycle to update the compensating reference current of this...
In response to industry power motor cannot directly starting and stopping issues, a new type intelligent design of soft starter is proposed in this paper. Intelligent soft starter design principles based on 89LV52 single chip is articulated. The hardware circuit design, software flow design and test data analysis are given in details. By producting in Zibo Galaxy high-technology development co., Ltd...
The problem of controlling a Permanent Magnet Synchronous Motor is approached in this paper eliminating the necessity of including a speed sensor and without knowledge of the (constant) load torque. The proposed controller is obtained by equipping a well-known state-feedback scheme with an observer for estimating the speed and an adaptation law for the unknown perturbation. The closed-loop is shown...
This paper proposes a new fine servo system based on a new over-modulation method with priority given to d-axis voltage for interior permanent magnet synchronous motor (IPMSM). The proposed over-modulation method gives priority to the d-axis voltage to avoid the d-axis voltage saturation, and increases the amplitude of inverter output voltage to achieve the quick torque and speed responses under voltage...
Interior Permanent Magnet Synchronous Motor(IPMSM) is used for wide applications because of its large torque density and high efficiency. However, IPMSM has large space harmonics and strong magnetic nonlinearity. The establishment of the dynamic characteristic analysis technique is required to examine control techniques to high performance and high efficient drive of IPMSM. In the paper, a new matrix...
This paper proposes a new voltage control technique for IPMSM drives to extend DC-link voltage utilization for flux weakening operation. The presented method does not require look-up-table and motor parameter for flux weakening operation. The difference between the switching period and summation of active switching times for PWM control of inverter is used to modify the d-axis current reference under...
This paper designs a novel control method for energy efficient and wide speed range drive of the PMSM. The proposed method includes several parts: (1) using a PI speed controller to create a signed current norm value as input of the command converter. (2)The command converter can simply and accurately generate an analytical current command according to the current control standard satisfying the maximizing/current...
This paper presents design of robust current controller. It takes the motor parameters as uncertain values. Comparing with other approaches it takes into account imprecision of decoupling which linearizes the motor model. The controller design uses error signals between coupling and decoupling terms and treats them as uncertainties. This approach preserves the linearity for the price of treating model...
This paper presents an improved performance of a Permanent Magnet Synchronous Motor (PMSM) using a hybrid Fuzzy/ Proportional-Integral (PI) controller. Hybrid control has an advantage of integrating a superiority of two or more control techniques for better control performances. A fuzzy controller offers better speed responses for start-up and large reference input changes (large speed error) as compared...
This paper investigated a new type of operating mechanism in which the high voltage circuit breaker (HVCB) is driven by a permanent magnet synchronous motor (PMSM). This type of mechanism has high reliability due to its simple mechanical structure. In addition, the operating process of the mechanism is controllable. In this paper, the control technique of PMSM was introduced. A simulation model of...
The main objectives of this paper are to improve performance of an induction motor by using Static VAR Compensator (SVC). The induction motor is used in a wide variety of applications; hence proper performance of it is important. SVCs are known FACTS devices to control voltage and to improve transient stability of power systems, and also to manage reactive power in power systems. In this paper we...
A fault tolerant drive based on a series architecture (one or two DC sources, two voltage source inverters and a PMSM) is studied in this paper. Three different operating modes are considered: normal mode, open-circuit degraded mode and short-circuit degraded mode. For each case, an adapted torque control strategy is proposed, applied and tested. The main contribution lies in the control strategies...
This paper describes the MTPA (maximum torque per ampere) control strategy of Salient-pole PMSM (permanent magnet synchronous motor) and its flux-weaking control strategy. Salient-pole PMSM often used the MTPA control strategy, the method that MTPA curves obtained from look-up table is usually used, but it will reduce the real-time performance and reliability of the system. In this paper, electromagnetic...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.