V/f constant, speed open-loop control of general frequency control system and the slip frequency speed closed loop control system, basically solved the problem of asynchronous motor smooth speed. However, when the production machinery on t…

Crane, dump and load torque big and smooth, positive and negative frequent and reliable. Frequency conversion device control crane, skip to rotary joints meet these requirements. An only child mountain petrochemical factory ketone benzene …

SCM has been in ac speed regulating system had been used widely. For example by Intel company 1983 years development and production of MCS - 96 series is the higher performance of the single chip microcomputer is one of the series, it is s…

At present, the research more high power inverter circuit are: Multilevel voltage inverter Transformer coupling of multiple pulse inverter Hand over frequency converter Doubly-fed ac frequency conversion speed control system (1) level volt…

Example 6, sewage disposal and other environmental protection class load Environmental protection is taken seriously more and more, it is related to rotating joints human survival environment, even the Olympic bid also have environmental i…

Crane, dump and load torque big and smooth, positive and negative frequent and reliable. Frequency conversion device control crane, skip to rotary joints meet these requirements. An only child mountain petrochemical factory ketone benzene …

Frequency conversion and soft start energy saving analysis pick to: this paper introduces the electric equipment of the energy consumption status and composition, the paper elaborated on frequency conversion and the energy saving principle…

With the development of electronic technology, frequency converter technology maturity, frequency converter quickly adapt to rotary joints the load change, supply maximum efficiency voltage. Frequency conversion governor in the software ha…

High temperature superconducting motor has light weight, small volume such advantages, very beneficial for ship pod propulsion applications. If a ship of 500 tons of lightweight container ship can load more than 40 containers, if using a h…

(1) drive power phase number, energizing way and the voltage and current are working to meet the needs of the stepping motor, (2) to rotating joint meet the stepping motor starting frequency and operation frequency requirements; (3) can ma…

The closed-loop step become motion control scheme of one You are familiar with the traditional way of stepping motor control. If adopted feedback device or senseless control way, can for safety, reliability and precision higher demand move…

Intelligent Motion Systems in its MDrive series installing a optional encoder Make motion controller and NEMA 14, 17, 23, and then the step motor micro stepping drive become one, The figure shows the MDrive17. The techniques--active dampin…

Device did not have any special requirements. High temperature superconducting motor can use existing synchronous converter, frequency converter or PWM converter, although in order to obtain the advantage of low distortion, possible for th…

Abstract: this paper expounds the enterprise 6 kv power grid, the grid short-circuit capacity are smaller and the high voltage motor capacity is big cases starting scheme selection, starting design calculation, analysis and determination, …

High performance dc pulse width speed control system has been widely used, and the fuzzy controller because do not depend on the object accurate mathematical model, and has strong robustness, so it in industrial control has been widely use…

Figure 1 for a 6 pole (3 for) high temperature superconducting Marine propulsion motor topological structure. It USES corelessarmature winding and the first generation of HTS wire (BSCCO - 2223) excitation winding. Figure 1. Typical 6 extr…

For the requirement of high precision, large range of speed regulation system, often need to adopt rotary encoder speed, namely digital speed. The speed of the system is measured by digital M/T method speed [6]. The use of T1 as timer, tim…

If we talk about sports an accuracy of a system, you will find many factors have influence on the. In view of the system accuracy, the engineer must know how to rotary joints give into motor, drive or controller coordination to get the ide…

Among them, the curve 3 current largest, highest or voltage; Curve 1 current minimum, or voltage minimum, curve and load of the point of intersection for load the maximum speed of point. To rotating joints make the average current is big, …

Step pitch Angle: correspond to rotating joint one pulse signal, the motor rotor turned with the angular displacement said. = 360 degrees (rotor tooth number J * operation take number), conventional two, four phase, rotor tooth for 50 toot…

From (6), (7) type can see, in accelerating stage, the pulse frequency rising, and acceleration with quadratic function increase. The accelerated methods step by step motor running very favorable, because starting, acceleration gentle, onc…

In order to rotating joint make the stepping motor in the operation of the don't appear out of step phenomenon, general requirements of the maximum operating frequency should be less than or equal to) step response frequency fs. In the fre…

With the development of electronic technology, frequency converter technology maturity, frequency converter quickly adapt to rotating joint the load change, supply maximum efficiency voltage. Frequency conversion governor in the software h…

Ac motor synchronous speed expression a: N = 60 f (1 - s) / p type (1) Type of n - asynchronous motor speed; F - asynchronous motor frequency; S - motor slip; P - motor pole logarithmic. By type (1), it is known that speed n and frequency …

(1) starter 6 coil 12 heads, in internal have fixed connection, with only six wiring pillar out as the rotor in connection with the line; (2) connection scheme: starter terminals, CC pressure in the third terminals; (3) as the starter has …

WSBQ-II branchless variable resistance starter in the row of the application of the machine Abstract: based on the WSBQ-II branchless variable resistance starter and use time relay control BP2-704 frequency sensitive rheostat the compariso…

Model The case of the motor is 3, 6 very quiet incentive sons, and 4 very rotors of switched reluctance motor (SRM). Control system simulation in Simulink is established in, motor in the calculation in the electromagnetic field ANSYS, inve…

1. This problem Application overview Motor control system design is a multi-disciplinary issues, including mechanical, electrical and control system. OPTIMUS can explore space design and optimization algorithm by its strength in need no us…

Total need analog input the number four, analog output 2 roads, count 2 roads, digital input 7 roads, digital output 12 road. Choose the simulation acquisition card company NI PCI-6024 boards, it has eight road different analog input, 2 ro…

In car wiper motor production, how online testing, motor performance and motor vibration quantity, testing data storage and bar code printing? Engineers use of National Instruments company simulation acquisition card and digital acquisitio…