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Evidence Guide: UEEIC0040 - Solve problems in polyphase electronic power control circuits

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

UEEIC0040 - Solve problems in polyphase electronic power control circuits

What evidence can you provide to prove your understanding of each of the following citeria?

Identify problems in polyphase electronic power control circuits

  1. WHS/OHS requirements and workplace procedures are identified and applied
WHS/OHS requirements and workplace procedures are identified and applied

Completed
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Hazards are identified, risks are assessed and control measures implemented

Completed
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Extent of polyphase electronic power control problems are determined from performance specifications, situation reports and consultations with relevant person/s

Completed
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Work activities are planned to meet scheduled timelines in consultation with relevant person/s

Completed
Date:

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Tools, equipment and testing devices needed for work are obtained in accordance with workplace procedures and checked for correct operation and safety

Completed
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Solve problems in polyphase electronic power control circuits

  1. WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
WHS/OHS risk control measures and workplace procedures for carrying out the work are followed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Polyphase electronic power control devices, circuit operation characteristics and applications are applied to developing solutions to control problems

Completed
Date:

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Parameters, specifications and performance requirements in relation to each polyphase electronic power control problem are obtained in accordance with workplace procedures

Completed
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Solutions to polyphase electronic power control problems are evaluated to determine most effective resolution

Completed
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Unplanned situations are responded to in accordance with workplace procedures in a manner that minimises risk to personnel and equipment

Completed
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Problems are resolved using sustainable energy practices and principles without wasting materials, damaging apparatus, the surrounding environment or services in accordance with workplace procedures

Completed
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Test and document solutions to polyphase electronic power control problems

  1. WHS/OHS risk control measures and procedures for carrying out the work are followed
WHS/OHS risk control measures and procedures for carrying out the work are followed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Solutions to polyphase electronic power control problems are tested to determine effectiveness and modified, as required

Completed
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Solutions are documented, including instructions for implementation, incorporating risk control measures

Completed
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Solutions used to solve polyphase electronic power control problems are justified and documented in accordance with workplace procedures

Completed
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Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Required Skills and Knowledge

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least two separate occasions and include:

applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including implementing risk control measures

applying sustainable energy principles and practices

dealing with unplanned events/situations in accordance with workplace procedures in a manner that minimises risk to personnel and equipment

determining the extent of the polyphase electronic power control problem

developing, evaluating and testing solutions to polyphase electronic power control problem

documenting justification of solutions implemented in accordance with workplace procedures

following scheduled timeframes

obtaining electronic device and circuit parameters, specifications and performance requirements appropriate to each problem

resolving problems in polyphase electronic power control circuits

testing and documenting solutions to polyphase electronic power control circuits.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

job safety assessments or risk mitigation processes, including risk control measures

three phase rectifier circuits, including:

three phase circuit configurations

resistive/inductive loads

output voltages/waveforms

ripple voltage/frequency

peak reverse voltages

freewheeling diodes

measurement of rectifier output parameters

three phase half wave-controlled rectifiers, including:

phase control

purpose/operation of half wave-controlled rectifiers

circuit configuration

rectifier performance and operation - resistive loads

output voltage resistive load

rectifier performance and operation - inductive loads

rectifier output waveforms

applications and limitations

advantages and disadvantages three phase half wave-controlled rectifiers

three phase half-controlled bridge rectifier, including:

purpose/operation of a half-controlled bridge rectifiers

circuit configuration and connections

rectifier output - resistive loads

output voltage resistive loads

rectifier output - inductive loads

output voltage - inductive loads

flywheel diode

output voltage calculations

applications and limitations

advantages and disadvantages three phase half-controlled bridge rectifiers

three phase fully controlled bridge rectifier, including:

purpose/operation of a fully controlled bridge rectifiers

circuit configuration and connections

rectifier output - resistive loads

output voltage resistive loads

rectifier output - inductive loads

output voltage - inductive loads

flywheel diode

output voltage calculations

applications and limitations

advantages and disadvantages three phase fully controlled bridge rectifiers

three phase alternating current (a.c.) controllers, including:

circuit configurations

circuit operation

triacs and silicon controlled rectifier (SCR) circuits

triggering requirements

output voltage and waveforms

determination of output voltage

applications

advantages and disadvantages

direct current (d.c.) converters, including:

purpose and operation of d.c. converters

circuit configurations

voltage control methods

forced commutation methods

calculation of load voltage

output voltage/waveforms

applications

advantages and disadvantages

cyclo-converters, including:

purpose/operation of a cyclo-converter

basic circuit configurations

measurement of output voltage

calculation of load voltage

output voltage/waveforms

applications and limitations

advantages and disadvantages

inverters, including:

purpose/operation of an inverter

basic circuit configurations

measurement of inverter outputs

output voltage

applications and limitations

advantages and disadvantages

thyristor protection, including:

power control devices failure

protection techniques

snubber networks

series inductors

amp trap high rupturing capacity (HRC) fuses

gate pulse suppression

installation of thyristor devices and circuits, including:

need for heat sinking of power thyristor devices

heat sink features and types

installation methods for all types of thyristor packages

basic thermal model, only to demonstrate the effect of different heat sink

types and profiles and installation methods on thyristor junction temperature

series and parallel thyristor connections, including:

purpose of series/parallel connection

series connections

reasons

operational problems

parallel connections

reasons

operational problems

fault finding three phase thyristor circuits, including:

fault finding procedures

typical faults power and trigger circuits

characteristics displayed by common faults

comparison of test data with expected data (voltage/current waveforms)

location and replacement of faulty components

problem-solving techniques

relevant manufacturer specifications

relevant tools, equipment and testing devices

relevant WHS/OHS legislated requirements

relevant workplace documentation

relevant workplace policies and procedures

sustainable energy principles and practices.

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.

Solving electrical problems in polyphase electronic power control circuits must include at least four of the following:

polyphase electronic power control circuits