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Unified electroheater and transformer design; power transformer assessment and industry standard high voltage testing of generators, transformers and cables. Rotating Machines.
This course teaches material in two main areas. Firstly, students will learn about electroheater, generator and power transformer design as applicable to dc and mains frequency applications will be covered. Students will learn about properties of materials often used in electric machine design, thermal fundamentals, skin effect, and conventional and reverse methods for induction heating and transformer design.Secondly, students will learn about the condition assessment of electric machines in the electric power industry. We will cover industry standard high voltage testing, which is necessary when: buying new equipment, uprating existing equipment or performing investigations. These tests are applicable to generators, motors, cables and transformers.Proposed teaching/delivery methods:Students will learn through lecture hours, assignments, group work and laboratory sessions. Lecture hours will cover the following topics, supported by private study.Electric Machine Design:Electroheater Design:• Properties of materials• Thermal fundamentals• DC and AC conduction heating• Induction heating and the transformer model of an induction heater• Transduction heatingRotating Machine Design:• Winding Design• Magnetic Circuits• Dimensions of Rotating Machines• Design ProcessTransformer Design:• Full core transformer design• Reverse design method for full core transformers• Partial core transformers• Partial core resonant transformers• Finite element methodHigh Voltage Testing:• High voltage withstand testing – AC, DC, VLF• Impulse testing• Partial discharge• Insulation Power Factor and CapacitanceRotating Machines:• Stator failure modes• Ring flux testing• Rotor testsTransformers:• Factory acceptance testing• Two winding transformer insulation model• Transformer oil testing and DGAA design assignment for an electroheater, generator or transformerA laboratory exercise applying industry standard high voltage test techniques to real equipment.
Learning Outcomes and National Qualifications Framework (NQF)Knowledge outcomes:1. Solid grasp of material properties as they apply to the design of elctroheaters and power transformers.2. Understanding of the appropriate testing methodologies for assessing the quality and performance of electrical insulation systems. 3. Fundamental knowledge of industry-standard test procedures and electrical safety practices.Skills outcomes:4. Ability to perform high voltage testing in a safe manner to industry standards.5. Ability to analyze incipient faults in power transformer equipment through DGAPersonal attributes developed:6. Communicating complex concepts to peers7. Designing and constructing optimal systems with limited resources
This course will provide students with an opportunity to develop the Graduate Attributes specified below:
Critically competent in a core academic discipline of their award
Students know and can critically evaluate and, where applicable, apply this knowledge to topics/issues within their majoring subject.
ENEL381, ENEL382
ENEL439
Andrew Lapthorn
Domestic fee $1,133.00
International fee $5,625.00
* All fees are inclusive of NZ GST or any equivalent overseas tax, and do not include any programme level discount or additional course-related expenses.
For further information see Electrical and Computer Engineering .