Direct torque control of induction machines using space vector modulation

Journal Article · Thu Oct 01 00:00:00 EDT 1992 · IEEE Transactions on Industry Applications (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/28.158828· OSTI ID:7022254

Habetler, T G ^[1]; Profumo, F; Pastorelli, M ^[2]; Tolbert, L M ^[3]

---

1. Georgia Inst. of Tech., Atlanta, GA (United States). School of Electrical Engineering
2. Dipt. Di Elettrotecnica, Politecnico di Torino, Torino (Italy)
3. Martin Marietta Energy Systems, Oak Ridge National Lab., Oak Ridge, TN (United States)

This paper describes a control scheme for direct torque and flux control of induction machines based on the stator flux field-orientation method. With the proposed predictive control scheme, an inverter duty cycle has directly calculated each fixed switching period based on the torque and flux errors, the transient reactance of the machine, and an estimated value of the voltage behind the transient reactance. The paper describes a method by which a voltage space vector can be calculated in order to control the torque and flux directly in a deadbeat fashion. The inverter duty cycle can then be calculated using the space vector PWM technique. With this scheme, the requirement of a separate current regulator and proportional-integral (PI) control of the flux, torque, and/or current error is eliminated, thereby improving transient performance. An alternative modulation scheme is presented in which transient performance is improved by specifying the inverter switching states a priori, then calculating the required switching instants to maintain deadbeat control of the flux while reducing the torque error during the entire switching interval. A similar approach is used for a transient in the flux. The implementation of the control scheme using DSP-based hardware is described, with complete experimental results given.

• OSTI ID: 7022254
• Journal Information: IEEE Transactions on Industry Applications (Institute of Electrical and Electronics Engineers); (United States), Vol. 28:5; ISSN 0093-9994
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
INDUCTION GENERATORS
CONTROL EQUIPMENT
POWER SYSTEMS
DESIGN
PLANNING
STATORS
FLUXMETERS
EXPERIMENTAL DATA
INVERTERS
TORQUE
TRANSIENTS
VOLTAGE REGULATORS
DATA
ELECTRIC GENERATORS
ELECTRICAL EQUIPMENT
EQUIPMENT
INFORMATION
MEASURING INSTRUMENTS
NUMERICAL DATA
240100* - Power Systems- (1990-)
240200 - Power System Networks
Transmission & Distribution- (1990-)