scholarly journals Algorithmic Methods of Providing Electromechanical Compatibility in Asynchronous Drive with Variable-Frequency Power Supply

2016 ◽  
Vol 16 (4) ◽  
pp. 77-83
Keyword(s):  
Power Supply ◽  
Variable Frequency ◽  
Frequency Power

Frequency Control System of Liner Motor Based on AVR Micro-Controller

2013 ◽  
Vol 416-417 ◽  
pp. 681-685
Author(s):  
Xiao Jie Ye ◽  
Dong Ru Sun ◽  
Liang Cheng ◽  
Yi Hua Yao ◽  
Yun Yue Ye
Keyword(s):  
Control Strategy ◽  
Power Supply ◽  
Frequency Control ◽  
Regulation System ◽  
Variable Frequency ◽  
Household Appliance ◽  
Speed Regulation ◽  
Frequency Control System ◽  
Three Phase ◽  
Frequency Power

According to the requirement for variable-frequency power supply when a liner motor runs in a household appliance, a variable frequency speed regulation system of three-phase SPWM is designed based on ATmega48 Micro-controller. The hardware structure, the SPWM technology of software program and V/f control strategy are analyzed. In the end of this paper, experiment waves are illustrated. The results show that the running of the system is simple and convenient; the reliability of the system is excellent.

The Application of Shunt Capacitor in Short-Circuit Test System of Transformer under Variable Frequency Power Supply

2013 ◽  
Vol 392 ◽  
pp. 526-530
Author(s):  
Li Di Wang ◽  
Yue Zhang ◽  
Chun Cheng Han ◽  
Zhe Li
Keyword(s):  
Power Supply ◽  
High Frequency ◽  
Short Circuit ◽  
Engineering Application ◽  
Test System ◽  
Variable Frequency ◽  
Short Circuit Test ◽  
Shunt Capacitors ◽  
Shunt Capacitor ◽  
Frequency Power

The short-circuit test is an important topic on the study of transformer features. With the shunt capacitor paralleled to the tested transformer, the test current can be reduced by the resonant of the capacitor and the inductance of transformer winding. Furthermore, using the high frequency power supply, the capacitor can be reduced in the resonant point because the high frequency values. In this work, the simulation model of short-circuit test of transformer with different frequency power supply is designed. Under variable frequency power supply, which are 50Hz,100Hz and 150Hz, the shunt capacitors value is given. From the simulation results, the application of the shunt capacitor takes a role in the short-circuit test of transformer. This has a significance role in transformer test research and engineering application field.

Linear PM Machines Having Mixed Grade and Unequal Magnet Height Pole

2013 ◽  
Vol 416-417 ◽  
pp. 439-444
Author(s):  
Nan Lin ◽  
Yang Shen ◽  
Z.Q. Zhu
Keyword(s):  
Control Strategy ◽  
Power Supply ◽  
Regulation System ◽  
Variable Frequency ◽  
Household Appliance ◽  
Speed Regulation ◽  
Three Phase ◽  
Software Program ◽  
Frequency Power ◽  
Hardware Structure

According to the requirement for variable-frequency power supply when a liner motor runs in a household appliance, a variable frequency speed regulation system of three-phase SPWM is designed based on ATmega48 Micro-controller. The hardware structure, the SPWM technology of software program and V/f control strategy are analyzed. In the end of this paper, experiment waves are illustrated. The results show that the running of the system is simple and convenient; the reliability of the system is excellent.

Research on the Carrier Frequency Loss Characteristics of Induction Motor Fed with Variable Frequency Power

2014 ◽  
Vol 651-653 ◽  
pp. 840-843
Author(s):  
Yao Hui Wu ◽  
Cheng Fang Ji ◽  
Xiu Feng Meng
Keyword(s):  
Power Supply ◽  
Carrier Frequency ◽  
Frequency Conversion ◽  
Reference Value ◽  
Element Model ◽  
Variable Frequency ◽  
Joint Simulation ◽  
Simulation Calculation ◽  
Frequency Inverter ◽  
Frequency Power

The artical for the consumption problem caused by carrier frequency of motor with variable frequency power supply.According to the principle of frequency conversion,the frequency conversion power model has been established, which applied to finite element model of motor.Then they implement joint simulation calculation. It is concluded that the characteristics relationship between the carrier frequency and loss of motor when variable frequency power supply. The characteristic of relationship between the loss of the motor and the carrier frequency proved by experiment when the carrier frequency inverter power supply.It has reference value for the design of variable frequency motor, frequency conversion application and energy saving.

Development of Inverter for Electric Propulsion Motor of Ship

2012 ◽  
Vol 588-589 ◽  
pp. 429-432
Author(s):  
Zhen Yu Nie ◽  
Xiao Bin Guo
Keyword(s):  
Power Supply ◽  
Electric Propulsion ◽  
Variable Frequency ◽  
Loop Control ◽  
Variable Quantity ◽  
Voltage Balance ◽  
Rotor Flux ◽  
Orientation Vector ◽  
Level Variable ◽  
Frequency Power

The paper presents the design of three-level variable-frequency power supply device which is used in electric propulsion system of ship The variable-frequency power supply device is controlled by the DSP chip TMS320LF2407, and inverter is neutral point clamped three-level inverter circuit which is consisted by IGBT, and it’s controlled by SVPWM modulator approach to determine switching elements making or breaking. In order to keep the balance of neutral voltage, the paper presents to use the method that two equivalent switch state of short vector work alternatively to cut down the variable quantity of capacitive, and to achieve the voltage balance. Rotor flux orientation vector control of torque closed loop control has taken in the speed control system of propulsion motor. The whole variable-frequency power supply device has some strong points such as working reliably, dynamic response fastly, current ripple small and less harmonic content of output voltage, etc, it has some practical value.

Computer-controlled, variable-frequency power supply for driving multipole ion guides

2008 ◽  
Vol 79 (3) ◽  
pp. 034702 ◽  
Author(s):  
Matthew D. Robbins ◽  
Oh Kyu Yoon ◽  
Ignacio Zuleta ◽  
Griffin K. Barbula ◽  
Richard N. Zare
Keyword(s):  
Power Supply ◽  
Variable Frequency ◽  
Computer Controlled ◽  
Ion Guides ◽  
Frequency Power
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