Next generation of variable frequency drives and application guidelines

Conference · Mon Nov 01 04:00:00 EST 1999

OSTI ID:697221

Sen, P K ^[1]; Gjorvad, S ^[2]

---

1. Univ. of Colorado, Denver, CO (United States). Electrical Engineering Dept.
2. Krupp Robbins, Inc., Englewood, CO (United States)

With the advent in power electronics, increase in power handling capacity of silicone controlled rectifiers and other power electronic devices and the use of high speed digital signal processor (DSP), new and better control principles are now utilized for the design of numerous variable frequency drives (VFDs) for large induction motors. One of the latest technologies developed is the direct torque control (DTC) devices which utilizes the electromagnetic state of the motor to control the flux in the magnetic core and hence, the torque. The response of the drive to changes in the required torque is dramatically improved. DTC provides a precise torque control without the need for a feedback device, such as an encoder or tachogenerator. This paper will discuss the next generation of VFDs utilizing DTC and its application considerations in electric power industry.

• Research Organization: Illinois Inst. of Tech., Chicago, IL (United States)
• OSTI ID: 697221
• Report Number(s): CONF-990410--PROC.-Vol.1
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CONTROL EQUIPMENT
DESIGN
EFFICIENCY
ELECTRIC MOTORS
RECTIFIERS
TORQUE
USES