Egston Power

Egston Power


Description
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  • November 14, 2018
egston power

CSU ARCHITECTURE
COMPISO System Unit (CSU) a universal configurable P-HIL test bench system consists the following architecture elements:The 3 phase supplying grid is connected by 100kVA – 2MVA isolating grid transformer to provide potential free power to CSU.With this transformer the system can be adapted to any 3 phase power grid voltage from 400V to 690V and 50/60 Hz.Together with the bidirectional Grid Inverter it forms the so called Grid Section. The Grid Inverter converts the varying AC Voltage in to a controlled DC Voltage (DC-Link) 750VDC@full load. It can source or sink energy from or to the grid depending on how the CSU works overall. The grid section defines and limits the maximum power which can be sourced or sank from/to the grid.This is perfectly balanced connected the COMPISO digital amplifiers (CDAs) block. In various configurations CDAs turn the calculated HIL or application models into the expected waveforms and power. Free selectable configurations of single CDAs allow to create DC, AC 1phase, AC 3phase with and without Neutral and any combinations of it.

Precise measurements of voltage and current on each CDA output enables real time closed loop control. COMPISO SCADA PC is an integrated part of the COMPISO System Unit.

The COMPISO SCADA (Supervisory Control and Data Acquisition) System fulfils the following roles:

  • System Configuration
  • System Parameterization
  • System Online Operation
  • System Monitoring and will be handled by a graphic user interface (GUI).

A COMPISO system unit is failsafe designed covered by the following safety items inside each CDA and CSU cabinet:

  • Overcurrent protection
  • Overvoltage protection (VDC_LINK, VOUT)
  • Dew point detection on the water cooling rail
  • Temperature Alarming (air, power semiconductors, cooling rail) Emergency OFFDoor Open shut down
  • Fast Discharge of DC-Link Capacitors
  • Shut OFF Input & Output Switches
  • External Safety Connections (connected to internal Safety PLC)
  • Temperature in Cabinet
  • Water Pressure

Optionally a CSU can be equipped by SIL (Safety Integrity Level 2 or 3) components, Realtime HIL processors and custom designed output matrixes to create tailor made solutions.

COMPISO DIGITAL AMPLIFIER CDA
The COMPISO Digital Amplifier (CDA) is the heart of every COMPISO solution. Designed as a 4Q-Power Amplifier, CDA works as a 6 legs interleaving buck-boost converter with coupled inductors. Every leg switches at rate of approx. 21 kHz, so the effective switching frequency results into 125 kHz. The power amplifier is well optimized for high dynamics, wide bandwidth and low latency.

It is fail safe and sends warnings when parameters exceed warning levels. Furthermore, it switches automatically off when dangerous condition levels are exceeded. To build it as compact as possible the CDA is water cooled. A CDA provides a full span output voltage up to 5 kHz. Moreover, with reduced amplitude, up to 15 kHz is available at the output, too.

COMPISIO Digital Amplifier is driven by digital set points for voltage and current with a set point frequency of 250 kHz. The digital input signals will be turned by CDA into proper analogue output signals with an excellent THD. The low transport delay between digital set point signal and PWM generation of 4μsec only permits high speed closed loop controls.

CSU100-1GAMP4
A 100 kVA COMPISO System Unit (CSU) consisting of one group of 4 COMPISO Digital Amplifier (CDA) can be connected and controlled in various 4 Amplifier system configurations. This high flexibility makes it future-proof even if some of these configurations are currently not needed. For each configuration datasets to the CDAs will be provided by COMISO SCADA.

Possible configurations are:

  • Free Amp Mode: each of the 4 amplifiers is used independently
  • AC symmetrical 1~ Mode: 2 amplifier groups of 2 paralleled amplifiers each are used to generate 1~ AC between its outputs
  • AC 3~ + N Mode: 3 amplifiers generate a 3 phase system the 4th amplifier is used for a neutral line
  • DC unipolar Mode: 1 up to 4 amplifiers are paralleled to generate a DC vs. DC Minus (-)
  • DC bipolar Mode: 2 amplifiers groups of 2 paralleled amplifiers each generate a +/- DC between their outputs

All these configurations are either work as a source with a load connected to the outputs or as a sink to load an external source for fully flexible bidirectional sink-source combinations.

CSU100-2GAMP4
A 100 kVA COMPISO System Unit (CSU) consisting of 2 groups of 4 COMPISO Digital Amplifier (CDA) each can be connected and controlled in various 4 Amplifier system configurations. This high flexibility makes it future-proof even if some of these configurations are currently not needed. For each configuration datasets to the CDAs will be provided by COMISO SCADA.

Possible configurations are:

  • Free Amp Mode: each of the 4 amplifiers is used independently
  • AC symmetrical 1~ Mode: 2 amplifier groups of 2 paralleled amplifiers each are used to generate 1~ AC between its outputs
  • 2 x AC symmetrical 1~ Mode: Two CDAs each are used to generate 2 independent bipolar single phase symmetrical AC output signals. Load is connected between CDA 1 and 2 and between CDA 3 and 4 outputs.
  • AC 3~ + N Mode: 3 amplifiers generate a 3 phase system the 4th amplifier is used for a neutral line
  • DC bipolar Mode: 2 amplifiers groups of 2 paralleled amplifiers each generate a +/- DC between their outputs
  • DC unipolar Mode: Up to four CDAs paralleled are used to generate a unipolar DC output signal. Load is connected between CDA outputs and DC minus.

All these configurations are either work as a source with a load connected to the outputs or as a sink to load an external source for fully flexible bidirectional sink-source combinations.

CSU200-1GAMP6
A 200 kVA COMPISO System Unit (CSU) is the basic 6 Amplifier Test bench system for multi-purpose use. The CSU 200 consists of one group of 6 COMPISO Digital Amplifier (CDA). These can be connected and controlled in various system configurations. This high flexibility makes it future-proof even if some of these configurations are currently not needed. For each configuration datasets to the CDAs will be provided by COMISO SCADA.

A selection of possible configurations are:

  • Free Amp Mode: each of the 6 amplifiers is used independently -AC symmetrical 1~ Mode: 2 amplifier groups of 3 paralleled amplifiers each are used to generate 1~ AC between its outputs
  • AC 3~ + N Mode: 3 amplifiers generate a 3 phase system the other 3 amplifier are paralleled and used for a high power neutral line
  • DC unipolar Mode: 1 up to 6 amplifiers are paralleled to generate a high power DC vs. DC Minus (-)
  • DC bipolar Mode: 2 amplifiers groups of 3 paralleled amplifiers each generate a +/- DC between their outputs
  • Optional 3~ Trafo N: Three times two CDA outputs drive the primary transformer windings of 3 single phase transformers with up to 500VAC. Secondary transformer windings can be connected to 3 phase + neutral system. Secondary transformer voltage can be customized designed.

All these and many more configurations are either work as a source with a load connected to the outputs or as a sink to load an external source for fully flexible bidirectional sink-source combinations.

Multiple CSU 200kVA systems can be grouped and paralleled to create output power up to 2MVA.


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