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Controlled Voltage and Current Sources

SEE ALSO: Current & Voltage Sources

Introduction

The controlled voltage and current sources represent a single or three-phase A.C. source with a series or parallel RLC impedance. In the network, these sources only generate the signal received on the control connectors. Hence, this process serves only to amplify or inject a signal in the network.

Controlled Sources Icons and Diagrams
The following icons and diagram are used to represent controlled sources.

Controlled | source, 1 ph

Controlled | source, 3 ph

Controlled v source, 1 ph

Controlled v source, 3 ph

Controlled v source, series


Properties


Single or three phase AC sources with series or parallel RLC impedance

Main Features

Amplify or inject a signal in the network from control block world

Implementation

  • Voltage sources have series impedance only that can be series of parallel RLC elements. Same for current sources.
  • Voltage sources always reference to the ground. Current sources inject current between buses without grounding.

Sources Implementation
The voltage and current sources are implemented in the network as follows:

The voltage source always has a series impedance. However, this impedance can be a collection of series or parallel RLC elements. The same applies to the current source, always having a parallel RLC impedance, parallel or series type. The voltage source has only one network connector, since is always referenced to the ground. The current source injects a current from one bus to another, without grounding. The single or three-phase signal applied to the control connectors as input will be the signal sent to the network, single or three-phased.

Parameter Description

Figures 4 - 19 and 4 - 20, respectively, show the control panels for voltage and current sources.

General Parameters

  • RLC connection = Series (series R, L, C) or parallel (parallel R, L, C).
  • R: Resistance value in ohms for each phase.
  • L: Inductance value in henry for each phase.
  • C: Capacitor value in farad for each phase.

Control Connector for Controlled Source

  • V input (voltage source): The voltage amplitude signal.
  • I input (current source): The current amplitude signal.
  • I output (voltage source): The current signal flowing from the source.

Control panel of a controlled voltage source (3 phases)


Control panel of a controlled current source (3 phases)

List of Available Signals
At acquisition, the following signals are made available by the sensors:
• I(a, b, c)_label: Current signal (current source) or measured current (voltage source) (A).
• V(a, b, c)_label: Source voltage (V). Voltage source only.

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