Modulation Ratio Optimized Control for AC Motor Drive System

Interaction of Drive Modulation & Cable Parameters on AC Motor Transients

This paper investigates over-voltage transients on ac induction motors when connected through a cable of arbitrary length to a Variable Frequency Drive (VFD) consisting of a Pulse Width Modulation (PWM) inverter with Insulated Gate Bipolar Transistor (IGBT) power devices. Factors contributing to a motor over-voltage transient equal to a theoretical twice dc bus voltage are first described using...

Frequency Controlled Ac Motor Drive

1.0 Features of Standard AC Motors The squirrel cage induction motor is the electrical motor motor type most widely used in industry. This leading position results mainly from certain excellent features of the squirrel cage motor such as: • Uncomplicated, rugged construction. For the user this means low initial cost and high reliability. • Good efficiency coupled with low maintenance costs resu...

EMI in Modern AC Motor Drive Systems

In this paper, several aspects of high frequency related issues of modern AC motor drive systems, such as common mode voltage, shaft voltage and resultant bearing current and leakage currents, have been discussed. Conducted emission is a major problem in modern motor drives that produce undesirable effects on electronic devices. In modern power electronic systems, increasing power density and d...

New Digital Hardware Control Method for High Performance AC Servo Motor Drive – Accelerator Servo Drive Development Platform for Military Application

Abstract: Today’s motor drives widely use Digital Signal Processor (DSP) or Microcontroller to implement the digital control algorithm. Most recently new requirements have arisen. These include faster torque control update with flexible design capability of motion peripherals for high performance military servo drive applications. A Complete digital hardware based AC servo drive development sys...

Direct Drive Ac Rim Motor for Responsive Energy Control of Alternative Electric Vehicle Final Report