* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Existing method
Mercury-arc valve wikipedia , lookup
Power engineering wikipedia , lookup
Immunity-aware programming wikipedia , lookup
Solar micro-inverter wikipedia , lookup
Transformer wikipedia , lookup
Spark-gap transmitter wikipedia , lookup
Electrical ballast wikipedia , lookup
History of electric power transmission wikipedia , lookup
Current source wikipedia , lookup
Electrical substation wikipedia , lookup
Pulse-width modulation wikipedia , lookup
Transformer types wikipedia , lookup
Stepper motor wikipedia , lookup
Amtrak's 25 Hz traction power system wikipedia , lookup
Power MOSFET wikipedia , lookup
Integrating ADC wikipedia , lookup
Schmitt trigger wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Three-phase electric power wikipedia , lookup
Power inverter wikipedia , lookup
Distribution management system wikipedia , lookup
Surge protector wikipedia , lookup
Variable-frequency drive wikipedia , lookup
Stray voltage wikipedia , lookup
Voltage regulator wikipedia , lookup
Alternating current wikipedia , lookup
Opto-isolator wikipedia , lookup
Buck converter wikipedia , lookup
Voltage optimisation wikipedia , lookup
A Multi-Level Converter with a Floating Bridge for Open-Ended Winding Motor Drive Applications Abstract This paper presents a dual three phase open end winding induction motor drive. The drive consists of a three phase induction machine with open stator phase windings and dual bridge inverter supplied from a single DC voltage source. To achieve multi-level output voltage waveforms a floating capacitor bank is used for the second of the dual bridges. The capacitor voltage is regulated using redundant switching states at half of the main dc link voltage. This particular voltage ratio (2:1) is used to create a multi-level output voltage waveform with three levels. A modified modulation scheme is used to improve the waveform quality of this dual inverter. Existing method The existing method describes a several converter topologies have been investigated to achieve multi-level output voltage waveforms, among them the diode clamped, flying capacitor and cascaded converters are commonly used. Multi-level converters have lower dv/dt and reduced harmonic distortion along with lower semiconductor switching device blocking voltage requirements, thus multi-level converters are advantageous in medium voltage, high power or low voltage, high frequency applications. Proposed method The proposed method describes a circuit topology is analyzed which is used as a three-level open end winding induction motor drive. This topology uses dual inverters with only one DC voltage source at the primary side of the converter. The second bridge converter is connected to a floating capacitor bank. The aim of this topology is to eliminate the requirement for a bulky isolation transformer whilst achieving multi-level output voltage waveforms. Block diagram Further Details Contact: A Vinay 9030333433, 08772261612 Email: [email protected] | www.takeoffprojects.com Block diagram of proposed floating bridge topology Advantages 1. This topology is to eliminate the requirement for a bulky isolation transformer whilst achieving multi-level output voltage waveforms. 2. The voltage across the floating capacitor bank is controlled using the redundant switching vectors along with a modified SVM scheme which avoids unwanted voltage levels in the phase voltage waveforms during the dead-time intervals, thus improving the overall waveform quality. Applications 1. High power or low voltage, high frequency applications. 2. And also used in agriculture loads. Further Details Contact: A Vinay 9030333433, 08772261612 Email: [email protected] | www.takeoffprojects.com