A power analyzer is used to measure the rate of power flow in electrical systems, and power parameters including power factor, efficiency and harmonics. Our power analyzers are ideal for high accuracy power measurement over a wide frequency range. Power measurement is from 4 channels to 32 channels, with optional speed and torque inputs, to measure both electrical and mechanical power. Power measurement features gapless cycle by cycle detection, to ensure no blind spots. Hence, this is ideal for testing during dynamic load changes, where traditional power meters fail. Analysis features include real time efficiency mapping, DQ analysis. There are options for data transfer to a test cell controller in a range of digital formats. All systems include the latest power analysis software for setup, real time visualisation, post processing and reporting. Applications include electric and hybrid vehicle drivetrain development, renewable energy measurement and transformer testing.
As you can imagine with a large proportion of engineering activities, choosing the incorrect tool may have serious implications on the results of your measurements. The information contained below is to help visitors make a more informed decision on a power analyser which is most appropriate for their requirements.
The method used depends on whether DC or AC power is being calculated. AC power is further broken down into three types, see below:
DC power: DC power is calculated by multiplying voltage (Volts) by current (Amps). The resultant power is measured in Watts (W). This is based on Ohm's law, and is true where the flow of current is always in the same direction.
AC power: In an alternating current (AC) circuit consisting of a source and a load, both the current and voltage are sinusoidal at the same frequency. AC power consists of active power, reactive power and apparent power.
A harmonic is a sinusoidal waveform with frequency that is an integer multiple of the fundamental frequency, caused by non-linear loads (e.g. rectifiers, lighting, saturated machines).
Harmonics can cause adverse effects like heating losses and higher audible noise emission in electrical systems.
Advanced power analyzers like the Dewetron power analyzer can perform:
POWER ANALYZERS OVERVIEW
