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Presented by John Allen -

High Voltage Winding Best Practice

Session 1: Basic AC machine design theory & constraints

Design constraints

Critical design area

  • Active surface area D2L, Amperturns/cm, flux & current densities etc
  • Coil pitch factors
  • Winding distribution factors
  • Induction machine winding connections
  • Consequent poles
  • Lap & wave winding connections
  • Concentric windings
  • Star / Delta connections
  • Control of stray losses using transpositions

Session 2: HV Coil insulation & control of partial discharge

HV Coil insulation basics

  • Requirements for coil insulation
  • Introduction to dielectric stress
  • Introduction to partial discharge
  • Insulation temperature classes
  • Introduction to mica

HV hot press coil design

Control of partial discharge

Session 3: HV Coil manufacturing & testing

Visual examples of different coil types

Examples of typical coil data sheets

HV Coil manufacturing

  • HV coil insulation design
  • Production of insulated rectangular conductor
  • Coil shaping & insulating; Lap, concentric, half-bar
  • Hot pressing for consolidation & slot cell insulation
  • VPI insulation system
  • Roebel coil design
  • Coil testing & coil test standards

Session 4: HV Winding best practice

Recording coil & stator data

  • Slot measurement & winding detail, left & right, handed coils
  • Wedges, transpositions, endwinding blocking etc
  • Core inspection & testing

HV Coil installation & shaping

  • Coil fit tolerances in slot, to bracing rings
  • Endwinding blocking & bracing
  • Multi-turn coil connection
  • Stator half-bar alignment & connection
  • Coil & Winding testing

Basic partial discharge analysis

Examples of failure modes

Course trainer - John Allen

After graduating from UMIST with a BSC in Electrical Engineering & Electronics, John started his working life in 1970 as an electrical design engineer. He is an authority in our industry, and is also representing EASA in IEC Ex committees and working as an independent engineer and Trainer.

Training - 14/03/2019 until 15/03/2019

Pricing

£800 GBP (EASA Members)
£ GBP (Non-members)

Location

Istanbul, Turkey

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