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This paper is focused on active and reactive power consumption and power losses in the consumer power system depending upon supply voltage quality. Supply voltage level deviations from rated voltage affect directly power consumption and power losses in the consumer power system. Active and reactive power relation to supply voltage is characterized by load factors. In the paper a practical method for...
This paper presents a comparison study between the operation of a back-to-back and a matrix converter induction motor drive under the presence of faults in the power switches of these converters. These two topologies are functionally equivalent in terms of input power quality and energy regeneration capabilities but need to be compared in terms of performance under faulty conditions as well due to...
This paper presents a fast on-load tap changing regulator used to correct unbalanced voltages. This regulator uses the semi natural commutation in order to improve the response. The proposed topology injects the voltage in only phase in order to balance the three phase system.
Reliability and power quality are two aspects of motor drives which have been gaining the attention of the industry. In fact, as the processes increased in number and complexity, the criticality of each component also increased. This paper proposes the usage of a PWM rectifier to accomplish a fault-tolerant motor drive with optimal performance and power quality. The system uses a hardware reconfiguration,...
Mainly due to historical and convenience reasons, for power levels up to several kVA electric utilities provide power distribution typically uses 1-phase a.c. feeders, despite a 3-phase supply would be technically preferable permitting for instance to use more efficient and compact induction motors, 3-phase rectifiers providing lower output ripple etc. This paper deals with a simple converter able...
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