外文翻译--现代交流调速系统的类型

附录附录A: 中英文参考文献此英文文献摘自参考文献：Donescu V ,Charette A ,Yao Z,et al.Modeling and simulation ofSaturated induction motors in phase quantities [J].IEEE Trans. On EnergyConversion ,1999，14 (3) :386-393..Modern type of AC Drive SystemExchange into a modern AC motor speed control system, power electronic power converters, controllers and four major detector components. In accordance with the object of different types of AC motor, speed of modern communication systems can be divided into induction motor and synchronous motor drives. Here are introduced the system of induction motor.1.1 induction motor speed control system of the basic types ofBy the induction motor working principle, we can see that from the stator intop=(1-s)M p is the effective electromagnetic power can be divided into two parts: mp=s M p and s is power load drag; another part of the deterioration of quality of power sproportional to slip . How to deal with deterioration of quality of power is consumed or feedback to the grid, and measurable system of induction motor efficiency. Therefore by poor power to the different treatment of modern induction motor can be divided into three types of speed control system.(1) power consumption and deterioration of quality-based speed control systemPoor power switch are converted to the form of calories consumed. Thyristor Surge speed fall into this category. In the induction motor speed control system, the minimum efficiency of such systems is to increase power consumption and deterioration of quality in exchange for the cost of lower speed.(2) to poor power feedback-based speed control systemTo deteriorate to a small portion of power consumed by the majority of variable flow control devices to the power grid feedback. Lower speed, more power to repay. Wound cascade induction motor speed and doubly-fed fall into this category.(3) to deteriorate to the same power-based speed control systemAnd deterioration of quality of power in the rotor part of the consumption of copper loss is inevitable, but in such systems, both high and low speed, power consumption and deterioration of quality is essentially the same, therefore high efficiency. VVVF fall into this category. AC Drive System is currently in, the application of a maximum of VVVF, the most extensive, can constitute a high dynamic performance of AC Drive System to replace the DC drive.1.2 AC speed control system of modern development trends and developmentsLooking at the speed of development of the exchange process and the status quo, we can see that speed of modern communication technology trends and future development trends.(1) to replace the DC drive system for the purpose of exchange of high-performancespeed control system for further research and development;(2) the new power converter topology of the research and development;(3) PWM mode of improvement and optimization;(4) medium voltage variable frequency device research and technology development.1.2.1 Control concepts and control technology research and developmentApplication of more than a decade show that the theory of vector control and other application of control theory has yet to be governor with the development of the exchange continued to be refined, so as to further enhance the exchange of the control performance speed control system. Various control structures are based on mathematical model of the object, therefore, in order to establish a reasonable exchange of speed control system applicable to the control structure, need to exchange the motor mathematical model of the nature, characteristics and the inherent law of in-depth study and discussion . AC Drive System in particular, the synthesis and calibration methods of the theory and engineering design of future AC Drive System is an important research topic. By the rotor flux-oriented induction motor vector control system to achieve the excitation current and torque current full decoupling, the mathematical model and the DC torque motor torque exactly the same model. However, the estimated rotor parameters and parameter changes do not affect the accuracy of directional coordinates of the offset caused by a problem which has not really solve the problem at home and abroad, so the rotor parameter identification and parameter changes for the future of the adaptive control of the critical study of vector control issues. In recent years, do not rely on the electrical model of fuzzy self-optimizing control, such as artificial neural network intelligent control method has been introduced to the AC Drive system, as a governor to control the exchange theory, control technology research and development of new directions. Direct Torque Control technology practice in the application of continuous improvement and upgrading of the main direction of its research to address low speed motor flux parameters on the impact of trajectory to further improve the control of low speed performance, the scope of the expansion speed. Cancellation through the mechanical connection of the tachometer generator and other gun sensor, Speed sensor hardware realization of a speed control system of the exchange of their own applications, but the accuracy and speed of the projected real-time control to be further in-depth research and development.1.2.2 PWM mode to improve the study and optimizationIn recent years, with the emergence of medium-voltage inverter, the voltage space vector PWM control mode to improve and optimize the research, which to resolve the three-level medium voltage inverter midpoint voltage offset issues, studied the synthesis of voltage vector PWM mode (no offset voltage at the midpoint of the long vector and short vector, a combination of zero-vector), has been made with research results of practical value for multi-level cascade inverter voltage pulse phase-shift PWM technique own application.Medium voltage frequency converter1.2.3 Research and DevelopmentMedium voltage refers to voltage levels for the 2300 ~ 10000V, in high-power means the power level in more than 300kW. Medium voltage, high-capacity research and development of AC Drive System has been in practice for more than 20 years have gradually embarked on the practical application stage, in particular, high-pressure full-controlled power devices have been in the application of pressure transducer rapidly accelerated. Among them, the current application is more IGBT, IGCT medium voltage three-level cascade inverter and multi-level medium voltage Transformer. Today's multi-level medium voltage AC inverter speed control has become a new field of study is one of hot topics in the pressure transducer and the direction of future development of research topics are:(1) technical aspects of safety devices are in series power device technology, triggering technology, isolation technology, insulation technology, the protection of technology, remote control and communication technology, electromagnetic compatibility, harmonic suppression technology.(2) control technologies will be the vector control technology, the introduction of direct torque control of pressure transducer technology, as well as research and development for medium voltage PWM inverter technology.(3) the development of medium voltage frequency converter by the voltage level of power electronic devices are not restricted. At present, the United States Cree Inc., Germany's Siemens, Toshiba, as well as European companies such as ABB money into the development of a silicon carbide (Sic) power electronic devices, the PN junction voltage up to 10kV level and above is expected the next 10 years , SiC devices will be a breakthrough in the development of a new generation of medium voltage frequency converter to the birth attendant.Thinking of vector control technologyMathematical model of asynchronous motor is a high-end, non-linear, strong-coupling multi-variable system, through the coordinate transformation that allows the Reduction and simplification, but did not change its non-linear, multi-variable nature. AC Drive System dynamic performance was less than desirable, difficult to adjust design parameters, the key is the linear approximation is only single-variable control system to the neglect of non-linear, multi-variable in nature. Many experts and scholars have conducted research with great concentration, and finally succeeded. 70s from the 20th century, German engineers created a new control theory of vector control in order to achieve the induction motor and DC with the same effect of a good governor. Vector control is a high performance induction motor control method, which is based on dynamic mathematical model of the motor, through the coordinate transformation, the model will be converted to AC motor DC motor model. Based on induction motor dynamic mathematical equation, it has a DC motor and the dynamic equation of the form of the same, so if you select an appropriate control strategy, induction motors and DC motor should be similar to the control performance, and this is the idea of vector control. Transform because of the current space vector, therefore, be achieved through the coordinate transformation is called vector control system control system transformation (Tran vector Control System), or vector control system (Vector Control System). Simply put, vector control is to decouple flux and torque, respectively, in favor of the design of the two regulators to achieve high-performance AC motor speed control. Vector control and slip frequency control based on vector control, sensorless vector control mode and speed sensorless vector control mode. This can be a three-phase induction motor equivalent to DC motor control, which was the same with the DC drive system of the static and dynamic performance. Vector control algorithm has been widely used inSIEMENS, AB, GE, FUJI international companies, such as the inverter.Vector control using a common frequency converter can not only scope in the speed DC motor with the match, and can control the torque generated by induction motor. As a result of the manner in which vector control is based on the precise parameters of induction motor was charged, and some general-purpose inverter is required in the use of accurate input parameters for induction motors, and some general-purpose inverter need to use the speed sensor and encoder. In view of the electrical parameters may change,will affect the frequency converter of motor control performance, the new current vector control inverter has universal asynchronous motor parameters automatically detect, automatic identification, adaptive features, with such a feature common frequency induction motors in drive before normal operation can be carried out automatically on the induction motor parameters identification, and in accordance with the results of the adjustment control algorithm to identify the relevant parameters of the induction motor of the ordinary for effective vector control.译文：现代交流调速系统的类型现代交流调速系统分为交流电动机、电力电子功率变换器、控制器和检测器四大部分组成。