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此源码是一个电控调音，变速变调的磁带机方案，MCU接口芯片采用PT2259，CD6651-this source is an electric control tuning, variable speed drives long-term downturns in the program, MCU interface chip used PT2259, CD6651
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使用V/F原理的交流电机控制和简单的PWM算法
交流电机在连接到电源时只能以其额定速度运转，所以要改变转速必须改变电源频率。本篇应用文档展示了这些技术如何在AT90PWM3上简单的被实现，也说明了AVR RISC微处理器在电源控制方面的应用。-Induction motors can only run at their rated speed when they are connected to the main power supply. This is the reason why va
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Paper about the induction motor, which is well known as the workhorse of industry. The development of variable speed induction motor drives has a long history of more than four decades. Today’s sophisticated industrial drives are the result of the ex
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The rapid adoption of automation techniques in dustry has increased the requirement for better
process control. This has resulted in many new applications for AC variable speed drives (VSDs) to
control the speed and torque of driven machinery.
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Direct torque control is one method used in variable frequency drives to control the torque (and thus
finally the speed) of three-phase AC electric motors. This involves a calculation of the motor s
magnetic flux and torque based on the measured
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File 1: THIS CODE IS USED TO DRAW THE PUMP CURVES AT DIFFERENT PUMP SPEED
1: PUMP CURVE
2: EFFICIENCY CURVE
3: BREAK HORSEPOWER CURVE
4: KW-INPUT CURVE
File 2: THIS CODE IS FOR APPLYING THE WAY OF CALCULATING THE EFFICIENCY, POWER
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The number of industry applications in which induction motors are fed by static frequency inverters is growing fast and, although much has already been done within this field, there is still a lot to be studied/understood
regarding such application
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AC motor drives are widely used to control the speed
of conveyor systems, blower speeds, pump speeds, machine tool
speeds, and other applications that require variable speed with
variable torque. The complete system consists of an ac voltage input
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Variable speed drives with Pulse Width Modulation are increasingly applied in many new industrial
applications for more efficient performance. Recently, developments in power electronics and semiconductor
technology have lead to widespread use of p
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