High-Precision Power Analyzers

What is a power analyzer?

A power analyzer is a precision instrument used to measure and analyze electrical power in systems, including parameters like voltage, current, power, efficiency, and harmonics. Engineers rely on power analyzers to understand how electrical systems perform, identify energy losses, and ensure compliance with industry standards. They are critical for optimizing the performance of electric motors, inverters, and power electronics, especially in applications like electric vehicles, renewable energy, and industrial equipment, where efficiency and power quality are key to system reliability and performance.

General features

Dewesoft power analyzers are powerful instruments for measuring and analyzing electrical power parameters. Some of the main features include:

• Single, 3-phase, or multi-phase inputs.

• Flexible form factor from modular design, portable display instruments, or high-channel count rack design instruments.

• High-speed 15 MS/sec acquisition rate.

• High bandwidth measurement up to 5 MHz.

• Integrated current sensor power supply.

• PTP synchronization.

• USB 2.0, USB 3.0 or GLAN interface.

• Additional synchronized inputs: IEPE, charge, strain, torque, temperature, digital I/O, video, CAN, XCP, FlexRay, GNSS, and more.

• Highly connectable via CCP, XCP, OPC UA, Siemens S7, Ethercat.

Software features

All Dewesoft power analyzers are shipped with award-winning DewesoftX software package for data recording, data visualization, and data analysis. DewesoftX includes intuitive and powerful module for electrical power measurements and analysis. Here are some of the features offered:

• Powerful data storage module with triggering

• Raw data storage

• Predefined power wirings: Direct current, Single-phase, Two-phase, Star connection, Delta connection, V connection, Aron connection and combined Star/Delta connection

• Real-time calculation of Active Power (P), Reactive Power (Q), Apparent Power (S), Distortion Power (D), Cos φ, Power Factor, P, Q, Cos φ for each harmonic

• Accurate frequency calculation: 16.7 Hz, 25 Hz, 50 Hz, 60 Hz, 400 and 800 Hz, Variable Frequency

• Efficiency and loss mapping of AC motors and inverters

• Voltage and current flicker

• THD, THC, TDD, TDC, TDR

• FFT and FFT harmonics

• Interharmonics, gull and half-sidebands

• Rapid Voltage Changes (RVC)

• Energy calculation

• Fault and transient recording

• Rich visualization

Learn more about Dewesoft electrical power analysis.

Current sensor

There is no power analyzer without a current sensor! Current sensors are essential for measuring current, and various types are available, including shunts, current clamps, zero-flux transducers, and Rogowski coils. Dewesoft provides all these types, offering different options to meet varying levels of current measurement accuracy. Here are some of the offered types:

• DC-CT® current transducers

• Zero-flux transducers

• Iron-core current transformers

• Hall-compensated current clamps

• Fluxgate current clamps

• Rogowsky coil current probes

• Current shunts

Current sensors can be connected directly to Dewesoft power analyzers. Power supply is either directly from the amplifier or optional integrated dedicated MCTS power supply.

Applications for power analyzers

Dewesoft Power analyzers have a wide range of applications across various industries. These applications highlight the versatility and critical role of power analyzers in ensuring efficiency, reliability, and compliance in electrical systems.

1. Electric Vehicle (EV) Testing: Measurement of power consumption, efficiency, and performance in electric motors, inverters, and battery systems.

2. Electric Motor and Drive Testing: Analysis of electrical performance, losses, and efficiency in motor and drive systems, including AC/DC motors and variable frequency drives (VFDs).

3. Inverter and Converter Testing: Measuring the conversion efficiency, power quality, and performance of inverters and converters in power electronics systems.

4. Renewable Energy Systems: Monitoring and analyzing power quality and performance in solar, wind, and energy storage systems.

5. Power Quality Analysis: Detection of voltage sags, harmonics, and other power disturbances in grids and industrial electrical systems to ensure stable and clean power supply.

6. Energy Efficiency Testing: Measuring and optimizing the energy efficiency of electrical devices and systems, such as HVAC systems, industrial motors, and appliances.

7. Power Electronics and Semiconductor Testing: Evaluation of power semiconductors, such as IGBTs and MOSFETs, in high-frequency and high-power applications.

8. Grid and Utility Power Monitoring: Continuous monitoring of power flow, consumption, and quality in utility grids to detect issues and ensure reliable energy distribution.

9. Aerospace and Defense Systems: Testing the power systems of aircraft, satellites, and military equipment to ensure high reliability and efficiency.

10. Laboratory and Research Applications: Precision measurement and analysis of power for research and development in new technologies, components, and systems.

Learn more about Dewesoft electrical power applications.