ac induction motor speed controller kit

Ngày tải lên: 17/12/2013, 18:06

... OF AC INDUCTION MOTORS Generally, induction motors are categorized based on the number of stator windings. They are: ã Single-phase induction motor ã Three-phase induction motor Single-Phase Induction ... Microchip Technology Inc. FIGURE 9: TORQUE -SPEED CURVES OF DIFFERENT TYPES OF SINGLE-PHASE INDUCTION MOTORS THREE-PHASE AC INDUCTION MOTOR Three-phase AC induction motors are widely used in industrial ... Although AC induction motors are easier to design than DC motors, the speed and the torque control in various types of AC induction motors require a greater understanding of the design and the characteristics...

Ngày tải lên: 25/01/2014, 13:20

Ngày tải lên: 18/12/2013, 22:06

... dynamic performancecompar- ison ofthe drive during acceleration where acceleration torque is very low due to slow acceleration. The machine hasa speed- sen- sitive load torque which is evidentfrom ... 660 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 38, NO. 3, MAY/JUNE 2002 A Neural-Network-Based Space-Vector PWM Controller for a Three-Level Voltage-Fed Inverter Induction Motor Drive Subrata ... 2002 Fig. 3. Space voltage vectors of a three-level inverter. (a) Space-vectordiagram showing different sectors and regions. (b) Space-vector diagram showing switching states. (c) Sector A space vectors...

Ngày tải lên: 22/12/2013, 08:16

Ngày tải lên: 15/10/2013, 16:10

... DC motor. However, by constructing a feedback loop that can detect the outputs of an induction motor, we can use this motor controller to control an induction machine. ã TMS320F243 DSP controller. ... Gareth S Roberts 4. The Induction Machine 4.1 The fundamental operating principles for an induction motor An induction motor is an asynchronous AC (alternating current) motor. The least expensive ... nominal speed. However, outside the rated speed operation, the flux has to be decreased like an inverse function of speed. By weakening the rotor flux, the induction machine can reach speeds...

Ngày tải lên: 27/10/2013, 23:15

... operating range of drive. In fact, the speed error using this strategy is less than 0.1% for speed commands ranging from 0.1 to 1.0 pu—without the use of a speed sensor. In practice, Figure 13.2-4 ... the use of induction machines in variable- speed drive systems. Several strategies will be considered herein. The first, volts-per- hertz control, is designed to accommodate variable -speed commands ... approximately achieve the commanded speed without the use of speed feedback. The second strategy is constant slip control. In this control, the drive system is designed so as to accept a torque...

Ngày tải lên: 16/02/2014, 18:54

... pass filter P K x PLL P-D- controller Mode selection I i * I i * I i * I i V i I.M. x I o * I o V i Figure 7 Block diagram of DCC system (according to [6]) Start controller End of controller medium error medium ... Torque Control of Induction Machines,” IEEE Trans. Ind. Electron., vol. 48, pp. 1057-1064, December 2001. [10] M. Depenbrok, “Direct Self-Control (DSC) of Inverter-Fed Induction Machine”, IEEE Trans. ... to the system with matrix converter and induction machine. In this paper, the most important direct control methods for matrix converter and induction machine are presented to give an overview...

Ngày tải lên: 13/05/2014, 00:55

... permanent-magnet DC velocity sensors (DC tachometers), AC permanent-magnet tachometers, AC induction tachometers. The permanent-magnet DC velocity sensor (DC tachometer) is a variable-inductance ... Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 21 Table 1. Specifications of the Honeywell 22VM51-020-5 DC Motor with Tachometer Motor Characteristics Units Values ... dynamic system investigation of a DC motor using a tachometer as a speed sensor. The tachometer is integral to the DC motor used in this case study. Other candidate speed sensors are optical encoders...

Ngày tải lên: 25/01/2014, 13:20

... is a range of AC electrolytic capacitors. These capacitors are most often used to provide the torque necessary to start AC motors and in other inter- mittent AC applications. FEATURES: ã Two ... (22.35) L MOTOR START AC ELECTROLYTIC MSC SERIES 25NTE Electronics, Inc. D Voice (800) 631–1250 (973) 748–5089 D FAX (973) 748–6224 D http://www.nteinc.com The MSC Series is a range of AC electrolytic ... MOTOR START AC ELECTROLYTIC MSC SERIES 27NTE Electronics, Inc. D Voice (800) 631–1250 (973) 748–5089 D FAX (973) 748–6224 D http://www.nteinc.com 330VAC Ratings and Dimensions NTE...

Ngày tải lên: 15/02/2014, 09:02

... or nonsinusoidal back emf waveforms. Machines with sinusoidal back emfs may be controlled so as to achieve nearly con- stant torque; however, machines with a nonsinusoidal back emf may be less ... particular, eventually, the back emf of the machine will rise to the point where the inverter cannot achieve the current command due to the fact that the back emf of the machine becomes too large. ... current is actually obtained. An average-value model of a permanent-magnet ac motor drive in which current tracking is not obtained is set forth in Reference 8 . Assuming that the actual currents...

Ngày tải lên: 16/02/2014, 18:54

... setback is that the rise time and the maximum overshoot cannot be calculated. This is due to the “hill climbing” action of the steepest descent gradient method. However this setback was replaced ... FUZZY CONTROLLER ON EXPERIMENT CASE STUDY 6.1 Normalized Fuzzy Controller To overcome the problem of PID parameter variation, a normalized Fuzzy controller with adjustable scale factors ... achieved. In this paper, the supervisor controller is built according to the accumulative knowledge of the previous tuning methods. The supervisor fuzzy controller has the following parameters:...

Ngày tải lên: 16/04/2014, 01:46

... cùng nằm trong sector 1, theo bảng 1 các trạng thái chuyển mạch lúc này là : acc → abb → aca → aba . acc nghĩa là pha A của tải nối với pha a của nguồn, pha B của tải nối với pha c ... ccc → acc → aca → aaa → aba → abb → bbb . . . . Tương ứng với các khóa chuyển mạch như sau: Hình 6: Sơ đồ chuyển mạch của các khóa trong 1 chu kỳ Ts Ghi chú :Ký hiệu SAc nghĩa ... eliminates reactive elements,” Proceedings of Powercon 7, San Diego,CA, 1980, pp. E3-1-E3-15. [2] A. Alesina, M. Venturini, “Analysis and Design of Optimum- Amplitude Nine-Switch Direct AC- AC Converters”,...

Ngày tải lên: 14/05/2014, 22:37

... yet subject the motor to any load. 31 EEM41 Three-phase asynchronous machines Asynchronous motor 6 EEM41 Three-phase asynchronous machines Asynchronous motor What is the motor& apos;s direction ... asynchronous machines EEM41 Three-phase asynchronous machines Asynchronous motor Set-up "Load characteristics" (star-delta switch) Recording the motor& apos;s load characteristics ... asynchronous machines Equipment: 300 W Industrial Series SO3636-6U Active machine test stand 300 W 1 each SE2662-2A Coupling sleeve 300 W 1 each SE2662-7B Coupling guard 300 W 1 each SE2672-3G Three-phase...

Ngày tải lên: 13/07/2014, 00:20

... J.Tocci 4 – Electronic divices and circuits - Theodore F.Bogart 5 – The 8051 Microcontroller - I.Scott Mackenzie ...

Ngày tải lên: 30/07/2014, 05:20

... ĐỔI DA 0808 DAC 0808 có nhiệm vụ biến đổi mã nhị phân thành dòng (tín hiệu analog). Dòng này có chiều chạy vào Iout của DAC 0808 và có cường độ thay đổi theo tỉ lệ ... vào. Khi data thay đổi từ 0  255 Iref, ở mạch dòng mã nhị phân được đưa từ KIT 8051 qua Port A của 8255-2 để đưa vào DAC 0808. SƠ ĐỒ BỐ TRÍ LINH KIỆN Chương II THIẾT KẾ PHẦN MỀM I ... ngõ vào để thay đổi 1 mức logic ở ngõ ra là: AV = 5/256  20mV 5 – Maïch taïo giao tieáp với KIT 8051:  8 bit ra của 0809 được nối với PortA của 8255 –1  3 chân chọn kênh A0, A1, A2 của...

Ngày tải lên: 30/07/2014, 05:20

... chương trình chức năng chưa nạp vào EPROM II – GIỚI THIỆU CẤU TRÚC PHẦN CỨNG KIT VI XỬ LÝ: 1 – Tần số làm việc:  Kit vi điều khiển sử dụng vi điều khiển 8051 hoặc 8951 của Intel với tần số...

Ngày tải lên: 30/07/2014, 05:20

Ngày tải lên: 30/07/2014, 05:20

Ngày tải lên: 30/07/2014, 05:20