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Powerpedia

You source of all those ABCs around power electronics

The definitions included in this glossary are related to when they are used in the context of ActionPower's products of power suppkies and automated test systems or their applications, which in some cases may differ in meaning in other situations.

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A


›AC Waveform

An AC waveform is a time-varying electrical signal whose voltage or current alternates direction periodically

›Anti-Islanding Protection

Protection against grid anomalies

›Arbitrary Waveform

Artificial and custom-defined voltage profiles that go beyond conventional shapes.

›Apparent Power

Apparent power is the total power in an AC circuit.

›Arrhenius Reliability Model

A mathematical model that describes the relationship between temperature and failure rate.

B


›Bathhub Curve

Failure rate prediction model

›Battery Equivalent Circuit Model (ECM)

A model to represent a battery’s dynamic behaviour

›Bidirectional Power Supplies

Sink and source in one unit

›Bipolar Power Supply

A bipolar power supply operates by controlling its output stage to generate voltage in two polarities

C


›C-Rate

The charging efficiency of a battery

D


›DAQ

Data Acquisition

›Distributed Energy Resources (DERs)

Distributed Energy Resources

›DOD

Depth of Discharge

E


›EIS

Electrochemical Impedance Spectroscopy

›Electrolyzer

Devices that splits water (H₂O) into its elemental components.

F


›Flicker

Rapid voltage fluctuations in AC power systems.

›Four-Quadrant Operation

A power supply's ability to both source and sink power across positive and negative polarities.

H


›Harmonic Injection

Deliberate addition of current or voltage at integer multiples of fundamental frequency.

L


›Latent Reliability Defects

Infant mortality, failures during early life stage of a product

›Linear Load

Linear load has its current and voltage waveform proportional to each other

›LVRT

Low Voltage Ride Through

M


›MCU

Motor Control Unit

N


›Non-Linear Load

Non-linear load has distortions in current and voltage due to changing load impedance

O


›OCV-SOC Curve

Open Circuit Voltage–State of Charge (OCV–SOC) curve

P


›Point of Common Coupling (PCC)

A key interface between distributed energy systems and the utility grid

›Phase-Locked Loop

A key component for grid-following inverters in DERs to keep track and synchronized with the connected utility grid

›Power Factor

The ratio of real power to apparent power in AC circuits

›PWM

Pulse Width Modulation

R


›Reactive Power Compensation

Techniques that improve energy quality in an electrical system

›Reactive Power

Reactive power is the portion of AC power that oscillates between source and load

›Regenerative Grid Simulator

Advanced AC programmable power supply for grid emulation

›Regenerative Load

Loading technology that saves testing cost

›RMS

Root Mean Square

S


›Skin Effect

Current's tendency to flow primarily on the outer surface of a conductor

›Slew Rate

How fast the power supply responses to current and voltage setting change

›Solid-State Transformer (SST)

A futuristic and critical conversion system for resilient, efficient AI data center power systems.

›SOC

State-of-Charge

›SOH

State-of-Health

›Solar Panel Simulator

DC power sources with specific software options for replicating the PV behaviours of smaller scale solar systems

T


›THDi

Total Harmonic Distortion of Current

›Three-Phase Power System

The practice of power which most national grids follow

V


›Virtual Synchronous Generator

Control algorithm for grid-forming technology

›Voltage Unbalance Factor (VUF)

Indices of for much the grid suffers from phase unbalance

X


›X/R Ratio

The mathematical ratio of inductive reactance to resistance in an electrical circuit


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