Fuzzy-logic control of AC induction motors
The paper discusses the fuzzy logic control (FLC) of electric motors, being investigated under the sponsorship of the U.S. EPA to reduce energy consumption when motors are operated at less than rated speeds and loads. Electric motors use 60% of the electrical energy generated in the U.S. An improvement of 1% in operating efficiency of all electric motors could result in savings of 17 billion kWh per year in the U.S. New techniques are required to extract maximum performance from modern motors. One possibility, FLC, has recently demonstrated success in solving control problems of nonlinear, multivariable systems such as ac induction motors and adjustable motor-speed drives. Simulated results of a microprocessor-based fuzzy logic motor controller (FLMC) are described. The investigation includes a motor stator voltage control scheme to minimize motor input power at specified speed/torque conditions; simulation of ac motor performance; and development of a FLMC for optimized motor efficiency. Simulated FLMC results compare favorably with other motor control approaches. Potential energy savings are quantitated based on the preliminary predictions of FLMC performance.
- Research Organization:
- Research Triangle Inst., Durham, NC (United States)
- OSTI ID:
- 5290293
- Report Number(s):
- PB-92-180207/XAB; CNN: EPA-R81-4169-03
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
COMPUTERIZED CONTROL SYSTEMS
CONTROL
CONTROL SYSTEMS
EFFICIENCY
ELECTRIC MOTORS
ELECTRIC POWER
ENERGY CONSERVATION
ENERGY CONSUMPTION
ENERGY EFFICIENCY
FUZZY LOGIC
MATHEMATICAL LOGIC
MOTORS
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
PERFORMANCE
POLLUTION CONTROL
POWER
SIMULATION
VOLTAGE REGULATORS