Who is stellar tech
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Stellar Tech Energy Services is a wholly owned Canadian company Manufacturer of WellMax Datalogger / Controller Specializing in the integration and distribution of VFD’s and motors . Strengths in Pumping Systems Oil, Water, and Municipal . Who is Stellar Tech?. Oil & Gas production pumping

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Who is Stellar Tech?

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Who is stellar tech

Stellar Tech Energy Services is a wholly owned Canadian company

Manufacturer of WellMax Datalogger / Controller

Specializing in the integration and distribution of VFD’s and motors .

Strengths in Pumping Systems

Oil, Water, and Municipal

Who is Stellar Tech?


What we do

Oil & Gas production pumping

Commercial Pumping

Municipal Pump Controls

Datalogging and Control

Work in a Global Market

What we do!


Our capabilities

Variable frequency drive (VFD) systems design and integrator .

Over 15 years experience in drives and automation

Thousands of successful installations

Complete systems integrator with design, manufacturing, start-up and service capabilities

Our Capabilities


Our products

WellMax Datalogger

Variable Frequency Drives

Down hole Pressure / Temperature Recorders

Our Products


Our strengths

Our Strengths

  • All products are manufactured to the highest quality standards

  • Knowledgeable customer service representatives and technical support groups

  • Worldwide commitment to customers with sales and service facilities around the globe


Who is stellar tech

WellMax Datalogger / Optimizer / Controller

  • Designed and engineered for pumping applications to optimize production

  • Can be used with VFD’s , Hydraulics or Across the line / Motor starter.

    • Extensive options available

    • Drive / motor control


Who is stellar tech

WellMax Features

  • Rod protection

  • Well OPTIMIZATION

  • Immediate data storage and retrieval

  • Fluid level control

  • Pump off

  • Multiple communication features and protocols

  • Trend analysis

  • Screen for on-site data viewing


Well conditions

Well Conditions

WellMax

Data Logger and Controller


Who is stellar tech

Equimavenca – Capital Nacional

Levantamiento Artificial / Servicio Integral

LEVEL AND RPM CONTROL


Pump off complete overview

Pump Off – Complete Overview

LEADING UP TO A PUMPOFF CONDITION

A–SPEED CHANGE

E-BROWN OUTS

B-PRESCO FAULT

G-PUMPOFF OCCURS

C-POWER BUMP

D-PRESCO

F-PUMPOFF SIGNS


A speed change

A - Speed Change


B presco fault

B - Presco Fault


C presco fault

C - Presco Fault


D power bump

D - Power Bump


E power brown outs

E – Power Brown Outs


F signs of pump off or pump damage

F – Signs of Pump-off or Pump Damage


G pump off occurs

G – Pump-off occurs


Tubing leak

Tubing Leak

Significant drop in torque displays tubing leak

Torque fluctuations are caused by excess volume of gas


Tubing leak1

Tubing Leak

Significant drop in torque displays tubing leak


Tubing hair line fracture

Tubing Hair line fracture

The increase of RPM caused enough pressure to open up the hair line fracture in the tubing, flow decreased but never completely stopped


Sand avalanche

Sand Avalanche

Pump is full of sand

Pump slowly filling with sand


Pumped off well

Pump Off Occurs

80 Ft Lbs

75 Ft Lbs

Pumped Off Well


Waxing condition

Waxing Condition


Parted rods

Parted Rods


Wellmax menu structure

WellMax Menu Structure


Summary report

SUMMARY REPORT


Nema 3r panel

NEMA 3R Panel


Vertical nema 1

VERTICAL NEMA 1

  • Unwired 3 Contactor Bypass Package

  • Showing

  • Fused Disconnect

  • Line Reactor

  • Contactors

  • O/L


Ieee 519

IEEE 519

The total harmonic voltage distortion at any point of common coupling with a nominal voltage of less than 66kV shall not exceed 5%.

Point of Common Coupling (PCC): That busbar electrically closest to any consumer through which any current must flow to that consumer and one or more other consumers.


Square wave harmonics content

Square Wave Harmonics Content

Square wave & Fundamental + 3rd

1.5

1.0

0.5

0

-0.5

-1.0

-1.5

1.0

1.5

0

0.5


Types of harmonic filters

A VFD with no input reactor or filter may result in 100% THID or more, measured at the VFD input terminals

A 3%Z line reactor will limit THID to 35~ 40%

A 5%Z line reactor will limit THID to 30 ~ 35%

A 5%Z line reactor & 3%equivalent Z DC reactor will limit THID to 25~30%

Tuned 5th harmonic trap will limit THID to 20 ~ 25%

12 pulse phase shifting will reduce THID to a minimum of 12% @ full load

18 pulse phase shifting will reduce THID to a minimum of 5% @ full load

Matrix wide spectrum filter limits THID to 8% or 5% at full load

Types of Harmonic Filters


Reducing harmonics

Reducing Harmonics

  • Ensure a low network Impedance

  • Distribute harmonic generating loads

  • Use AC line or DC link reactors

  • Install Harmonic filters


Motor inverter compatibility topics

Reflected Wave Theory

Waveform Analysis with output reactors & filters

Long Motor Leads

Drive Solutions

Motor Solutions

Motor Inverter Compatibility Topics


Reflected wave theory

Mismatch between surge impedance of:

Drive-to-motor cable & Motor winding

Cable surge impedance fairly constant through hp range

Motor surge impedance inversely proportional to hp

2 per unit voltage evident on motors up to 500 hp

Motor terminal voltage doubling on leads over 15 feet

Reflected Wave Theory


Who is stellar tech

PWM Waveform

1.0

-1.0

Full Voltage, 60 Hz PWM Waveform

1.0

-1.0

Half Voltage, 30 Hz PWM Waveform


Vfd output motor terminal voltage reflected waves

VFD Output & Motor Terminal Voltage, Reflected Waves


Igbt vfd motor terminal peak voltage rise time characteristics

Peak voltage = twice DC Bus voltage at critical cable length and longer. DC bus voltage = AC input voltage * 1.414.

e.g. 600 VAC * 1.414 = 850 * 2 =1,700 V Peak.

Rise time = 0.015uS to 1uS Depending on IGBT Current Rating

Critical cable length = speed of propagation * rise time.

e.g. 150meters/uS * 0.03uS = 4.5 meters

IGBT VFD, Motor Terminal Peak Voltage & Rise Time Characteristics


Who is stellar tech

IGBT VFD, Motor Terminal Voltage, 10 HP, 460 Volt, 6 KHz Carrier Frequency, 60 Hz Output Frequency, No Load Reactor, 10 Feet of Cable, Peak Voltage 1,200 Volts, Rise Time .03uS


Who is stellar tech

IGBT VFD, Motor Terminal Voltage, 10 HP, 460 Volt, 6 KHz Carrier Frequency, 60 Hz, 3%Z Load Reactor, 10 Feet of Cable, Peak Voltage 820 Volts, Rise Time 2uS


Who is stellar tech

IGBT VFD, Motor Terminal Voltage, 10 HP, 460 Volt, 6 KHz Carrier Frequency, 60 Hz Output Frequency, Sine Wave Output Filter, 10 Feet of Cable, RMS Voltage 460 VAC, No Spikes


Who is stellar tech

IGBT VFD, Motor Terminal Voltage, 10 HP, 460 Volt, 6 KHz Carrier Frequency, 60 Hz Output Frequency, No Load Reactor, 250 Feet of Cable, Peak Voltage 1380, Rise Time .05uS


Who is stellar tech

IGBT VFD, Motor Terminal Voltage, 10 HP, 460 Volt, 6 KHz Carrier Frequency, 60 Hz Output Frequency, 3%Z Load Reactor, 250 Feet of Cable, Peak Voltage 1,000 Volts, Rise Time 10uS


Who is stellar tech

IGBT VFD, Motor Terminal Voltage, 10 HP, 460 Volt, 6 KHz Carrier Frequency, 60 Hz Output Frequency, Sine Wave Output Filter, 250 Feet of Cable, RMS Voltage 460 VAC, No Spike


Long cables

From critical cable length and longer, motor terminal voltage remains at 2 per unit

Time spent at 2 per unit voltage increases with cable length therefore transient energy level much higher

Insulation stress much higher

proportional to transient energy*carrier frequency

Long Cables


Nema minimum design standards for 3 phase induction motors

MG1 part 30

As a minimum

motor insulation

must withstand

1000 volt peak @

2uS rise time

MG1 part 31

As a minimum

motor insulation

must withstand

1600 volt peak @

0.1uS rise time

NEMA Minimum Design Standards For 3 Phase Induction Motors


Vfd solutions

For NEMA MG1 part 30 Motors

No output reactor or filter required for 208/240Volt applications

Use output reactor for 460 volt applications

Use output dv/dt filters for 575 volt applications

Keep motor leads short

Keep carrier frequency low

Keep motor cool

VFD Solutions


Motor solutions

For NEMA MG1 part 31 Motors

No output reactor or filter required for 208/240 volt applications

No reactor or output filter required for 460 volt applications unless cable length is extreme

Use output reactor for 575 volt applications

Motor Solutions


End of presentation

THANK YOU

END OF PRESENTATION


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