Microprocessor based area sampling technique for neutral point clamped PWM inverter
Abstract
Recent advances in microelectronics, power devices and other technological areas have made it possible to design and develop three-phase, variable frequency, variable voltage, switching power inverters to drive three-phase ac motor and for a variety of other applications. In these systems, the microprocessor is playing an increasingly larger role for generating complex control signals, which were previously not possible by conventional linear and digital IC's. This paper discusses a microprocessor based switching control signal for three phase neutral point clamped pulse width modulated inverter which has been designed and developed to minimize the lower harmonics in the output voltage. These complex PWM switching signals (PWM patterns) can be computed and generated in real time with good harmonic spectrum by using fast microprocessors.
- Publication:
-
IN: NAECON 1985; Proceedings of the National Aerospace and Electronics Conference
- Pub Date:
- 1985
- Bibcode:
- 1985naec.conf..401S
- Keywords:
-
- Frequency Converters;
- Inverters;
- Microprocessors;
- Pulse Duration Modulation;
- Electric Potential;
- Harmonics;
- Microcomputers;
- Sampling;
- Signal Generators;
- Electronics and Electrical Engineering