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T-Star SVC Systems

High-Performance Technology
Fast-Reacting SVC Systems

T-Star SVC systems offer the most economical high-speed performance. Our decades of experience allow us to offer a value-based power correcting system. T-Star SVCs correct power problems at a fraction of the cost of traditional, more well-known products.

Adding a T-Star SVC system is a great way to reliably place large electrical loads on weaker power systems. Dynamically-adjusted VArs maintain and optimize voltage levels during rapidly-changing load conditions. In other words, our SVC corrects for poor power performance at your facility.

Proprietary Switches
T-Star's TSC controls make the difference in our SVCs

T-Star's controls feature sub-cycle response times. Our SVCs have the ability to switch and re-switch billions of times without showing any wear or timing variations. In-the-field and in-plant lessons have allowed us to optimize our systems, ensuring best value and years of reliable use.

SVC Controls
T-Star's TSC Capabilities

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  • Controller scans inputs at 7+ kHz
  • Analog inputs are measured WITH EXTREME PRECISION
  • Valve turn on/turn off signals are ACCURATE TO WITHIN NANOSECONDS
  • Advanced processing power
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  • Proven robustness

  • Real-time processing

  • Programming flexibility

  • Advanced processing power

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  • Remotely upgradeable software
  • Rapid performance reviews
  • Rapid power factor correction stages
  • Rapid modification of control response

TSC-Based SVCs
  1. Sense instantaneous changes in VAr requirement and determine the appropriate response.

  2. Add and remove VArs from the power system, as needed, each cycle.

  3. Switches the compensating VArs millions or billions of times without wear-and-tear to the capacitors or the solid-state switches.

TSCs vs. Fixed Capacitors
The difference between fixed capacitors and T-Star SVCs is the dynamic cycle-by-cycle capability of the Thyristor Switched Capacitors (TSCs).
TSCs are different from conventionally switched PF correction banks. TSC systems are all solid-state and react to changing VAr needs in less than a cycle. PF banks correct only for very slowly changing VAr needs (such as those that occur when a facility goes online in the morning and shuts down in the evening).


Best SVC Value

  1. Thyristor Switched Capacitors (TSCs) - no moving parts
  2. Small footprint-flexible placement
  3. Lower initial cost versus other solutions
  4. Quick build and install (6 months or less)
  5. Moveable/reusable/reconfigurable
  6. Facility bus is both cleaner and steadier
  7. Ease of operation
  8. Reliable and durable
  9. Remotely monitored
  10. Easy purchase process
  11. Guaranteed performance

T-Star SVCs Feature:
  • Protection against electromagnetic interference
  • High-Reliabilty Electronic components
  • Precise firing function with dV/dt independence
  • Two-stage hardware/software interlock eliminates the possibility of false (mis) firing.
  • Thyristor status monitor
  • Improved dV/dt capability
  • RC damping
  • Magnetically-coupled thyristor triggering technology
  • Internal protection against di/dt stress
  • N+1 and N+2 designs
  • Non-PCB oil cooled and insulated
  • Average annual failure rate of less than 0.15%


Power Quality

  • Power Quality refers to the conformance of the power system to established specifications.

  • Power Quality can vary and is often used to define the comparison between actual and ideal electric power

Poor Power Quality

Do you think you have a power quality issue?

T-Star has many years of experience performing power quality studies.

If you are planning to build a new facility or expand an existing one, poor power quality can hinder your ability to operate facilities, especially in applications that rely on starting and running large motors. Our solution eliminates the need for a large dollar outlay (and possibly many months or more of lost time while your power system is upgraded).

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T-Star SVCs Correct Poor Power Quality

T-Star's SVC Systems provide the most economical technology available to improve the characteristics of a power system instantly. 

A T-Star SVC can:

  • Maintain outstanding voltage stability on an entire distribution system despite operation of large motors on the same circuit.

  • Reduce to minimal levels the impact of faults from adjoining distribution circuits or elsewhere on the system.

  • Be programmed for multiple circuit conditions [e.g., with/without local generation].

  • Be programmed for multiple actions (e.g., offset local facility impacts/ clear downstream circuit faults) 

T-Star systems can be used in virtually any situation where transient voltage stability, outage recovery, or power flow are issues of concern.

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    Rack-mounted Substation SVC
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    Rack-mounted Substation SVC
Here's how Dynamic VAR Compensation lines up against common PQ Issues:

PQ Issue Sags Surges Flicker Harmonics Lightning Actual Outage
VOLTAGE ✔ Full Solution ✔ Full Solution ✔ Full Solution ✔ Full Solution
CURRENT ✔ Partial Solution

Please note: More than one issue can occur at a time. If your issues include Voltage Fluctuations [or Stability], Voltage Harmonics, or Current Harmonics our high-performance SVCs can help.

T-Star SVCs, Industry and Utilities

Industry and Utilities

High utility costs

Larger utility customers, [those who require a special, high power, expensive, or higher voltage connection] pay for all the costs (including a utility profit) associated with their power connection.

We can save you money

T-Star SVC Systems make it possible for large customers to connect to the power system at a much lower cost, while maintaining superior Power Quality within the facility.

Our customers usually enjoy a 2-5 year payback on their investment.


Local Connectivity and Remote Monitoring

Two Ethernet ports are available on the T-Star controller.

ETH1 is connected to a customer HMI (with 3 levels of password access protection) and can also be connected to a customer’s internal Ethernet network to allow authorized users (such as operators) to watch the real-time performance.

ETH2 is used for an SSL VPN embedded in the controller that automatically connects to T-Star, allowing remote monitoring, tuning, and if necessary, diagnosis of the SVC. This secure connection is accessible only to qualified T-Star personnel.

No Internet traffic is allowed between ETH1 and ETH2. This configuration provides customers with maximum internal security. Our customers find the remote VPN connection invaluable. T-Star remotely tunes (adjusts) systems, and updates software to provide new features as they become available. Remote access, combined with conscientious annual on-site maintenance, provides the optimum combination of low maintenance cost and high reliability.

T-Star Proprietary Equipment

T-Star provides the static valves in one of two configurations:

  • A short stack, where the nominal RMS voltage across the leg is 8.4 kV or less.
  • A long stack, where the nominal RMS voltage across the leg is 14.8 kV or less.

T-Star provides an integrated control system comprising:

  • One NI cRIO control
  • One proprietary backplane
  • One proprietary interface board
  • Two proprietary high speed A/D boards
  • Multiple proprietary valve operating boards.
  • Standardized proprietary control software capable of operating up to 4 sets of static valves and 2 sets of switched filter banks in its standard configuration.