According to the principle of the model reference adaptive control theory, the novel method using Popov's hyperstability criterion to solve the convergent ... I Vincent 被引量: 0发表: 1995年 VARIABLE SPEED CONTROLLER FOR AC MOTOR PROBLEM TO BE SOLVED: To appropriately control the torque or spe...
The development status of the variable speed system of large power AC(alternating current)motor drive in China is introduced.The large power AC drive fed by AC-AC converters(cycloconverters)has developed greatly,and some innovations on the theory and engineering technique have been realized.They ...
The variable-speed control of a voltage source inverter-fed cylindrical rotor type of brushless half-speed synchronous motor with feedback of the rotor position is described. On the basis of an approximate analysis of the steady state, an expression for torque is derived, and two methods of spe...
Use standard three-phase asynchronous motor, widelyused, simple maintenance, wide speed range, runningsmoothly.Intelligent protection built-in for overvoltage, undervoltage,overload, short circuit or broken equal. Make pumprunning more stable and safety.Clear menu, easy operation.With the design of a...
A variable speed wind turbine is disclosed comprising a turbine rotor that drives an AC induction generator, a power converter that converts the generator output to fixed-frequency AC power, a generator controller, and an inverter controller. The generator controller uses field orientation to regulate...
A variable frequency drive (VFD) controls the voltage and frequency supplied to an AC induction motor in order to control and vary the motor's speed or torque. The common use of VFDs has allowed improved matching of loads to drives, precision control of
Three-level double-fed motor control system can adjust the stator side reactive power and improve system stability.The topology structure and control principle frame diagram of three-level double-fed motor speed system and the mathematical model of two-phase rotating coordinate is derived in the two...
Speed Controlled Belt Conveyors: Drives and Mechanical Considerations They called this deceleration parameter as bilinear variable deceleration parameter. Bulk Viscous Cosmological Model in Brans-Dicke Theory with New Form of Time Varying Deceleration Parameter A cesarean section was performed to deliver the...
d-q ANALYSIS OF A VARIABLE SPEED DOUBLY AC EXCITED RELUCTANCE MOTOR The paper describes a new type of variable speed doubly-fed reluctance machine and presents the model for the analysis of the machine. The stator of the machine is equipped with two sets of sinusoidally distributed windings havi...
2)Varying speed of light theory(VSL)光速可变理论 3)Variable Speed Limits可变限速 1.Expressway Socio-Economic Impact Assessment forVariable Speed Limits;高速公路可变限速系统的社会经济影响评价 英文短句/例句 1.Cruise Control with variable speed limiter (SPEEDTRONIC)连可变限速装置的SPEEDTRONIC 定速巡航控制系...