footprint fits easily into connectors and handheld devices.
A complete USB-serial design can be accomplished
without any external active components — just a few
surface-mount resistors and capacitors. With its tiny power
consumption in either operating or suspend mode, the
PL2303RA is ideal for bus-powered operation, allowing
plenty of spare power for any attached devices. It has
been designed for - 40°C to 85°C operation, and comes in
a small footprint RoHS-compliant and Pb-free 28-pin SSOP
IC package. The PL2303RA is manufactured by Prolific
MOTOR DRIVE POWER ANALYZER
Teledyne LeCroy now has available three-phase motor
drive power analyzer software
for its HDO8000 oscilloscopes.
The HDO8000 mixed-signal
oscilloscopes — with eight input
channels, 12-bit resolution, and
up to 1 GHz bandwidth — are a
practical solution for motor drive
embedded control and power
section debug. With the addition
of three-phase power
analyzer capability and motor
speed and torque integration,
the complete drive system
can be more quickly and easily
validated and debugged, and
extensive drive and motor power and efficiency
measurements may be performed.
The HDO8000 and motor drive power analyzer
software can be utilized by designers and manufacturers
of motors, motor drives, variable frequency drives, variable
speed drives, industrial automation, and motion control
equipment. Design engineers that integrate motors into
their designs (vehicles, power tools, appliances, elevators,
fans, blowers, compressors, pumps, etc.) can utilize the
product to validate proprietary controls and complete
drive system designs.
A complete drive system is a complex mix of three-phase power electronics, motor/mechanical analog and
digital sensors, and embedded controls, with a complex
variety of analog, digital, serial data, and pulse-width
modulated (PWM) signals. Oscilloscopes are able to
capture higher speed embedded control system or power
transistor activities, but until now have been unable to
measure drive power and efficiencies.
Power analyzers are a single-use tool for measuring
input/output "black-box" drive power and efficiencies, but
provide limited or no waveform capture for embedded
control or drive system debug.
The HDO8000 oscilloscope with motor drive power
analyzer software permits waveform captures from the
drive power section, individual power transistors, and
embedded control system, and performs coincident three-phase power analysis of the power section waveforms in
one high performance instrument, enabling debug and
analysis of all aspects of the complete motor drive.
An intuitive graphical user interface provides
setup/connection guidance. Setup capability is provided
for any combination of single-phase or three-phase drive
input/output, and supports both two- and three-wattmeter
calculation methods and a line-line to line-neutral voltage
Using the two-wattmeter method, drive input/output
and motor output efficiencies can be measured using the
eight inputs on the HDO8000 oscilloscope.
The motor drive power analyzer software permits
simple integration of nearly any type of speed,
rotation, or position sensor, including analog and
digital (pulse) tachometers, brushless DC (BLDC) Hall
sensor, quadrature encoder interface (QEI), and
resolvers. Additionally, Hall sensor and QEI signals
can be integrated through digital inputs,
preserving valuable analog input
channels for other signals.
Various voltage, current, power
(real, apparent, and reactive),
phase angle/power factor,
and efficiency parameters are
calculated on acquired
voltage and current waveforms
and displayed in a table.
22 November 2014
For more information, contact:
Saelig Company, Inc.