Technical Articles

Yaskawa America, Inc. - Drives Division has published these technical articles:

(Machine and Motion Controllers)
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Deciding which setup is right for a common bus takes research and evaluation, but selecting and implementing the right one significantly improves design performance and efficiency.... (View Full Article)
(Motor Controls and Drives)
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TSA Manufacturing in Omaha, Neb., provides steel products and services to the construction, precast concrete, and structural steel markets. One machine-a thread roller that makes long steel threaded... (View Full Article)
(Power Supplies)
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By using the drive's built in setpoint, proportional-integral-derivative (PID) control, the process can be automated to tank or pit level, permitted flow or injection pressure.... (View Full Article)
(Motor Controls and Drives)
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Conventional variable speed drives offer control for motor speeds. New advancements in their configuration look to simplify the process.... (View Full Article)
(Motor Controls and Drives)
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This paper revisits a non regenerative active front end system that has been studied in the past but offers significant improvements to make it acceptable to the drives industry. A three-phase current... (View Full Article)
(Motor Controls and Drives)
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The process of wire drawing has in effect changed very little over the years. It uses a combination of a die and/or a series of dies to draw wire to a selected gauge. Drawn wire is in many... (View Full Article)
(Motor Controls and Drives)
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This is the first part of a series that discusses how VFD technology has become a common feature in compressors where the focus is on production efficiency and energy savings.... (View Full Article)
(Motor Controls and Drives)
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Medium Voltage VFDs Provide an Ideal Solution for Many Facilities: White Paper Case Study of MV1000 Installation at Municipal Authority of Westmoreland County (MAWC) near Pittsburgh, PA... (View Full Article)
(Motor Controls and Drives)
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Regardless of whether they are used in processing plants or in discrete manufacturing, commercial, municipal, or institutional facilities-motors that are started across the line require large amounts... (View Full Article)
(Motor Controls and Drives)
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Flow control enhances efficiency and energy savings.... (View Full Article)
(Motor Controls and Drives)
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Many organizations want to save energy because of increasing costs for electric power. Costs for electricity vary widely across the U.S., with most utility rates rising steadily for a variety of... (View Full Article)
(Motors)
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In the induction motor, slip frequency (i.e., the frequency difference between stator rotating flux and mechanical rotating speed) induces current in the rotor windings. The interaction between... (View Full Article)
(Motors)
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Upgrade your next machine design with servo motors to decrease downtime, decrease footprint, increase throughput, make equipment last longer, and provide better diagnostics.... (View Full Article)
(Motor Controls and Drives)
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Motors account for at least half of the energy consumed in the U.S. Selecting the right control method for an application lets the motor run most efficiently while maximizing torque and overall... (View Full Article)
(Power Supplies)
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Input current imbalances happen when a variable frequency drive (VFD) with a full-bridge rectifier operates under lightly loaded conditions.... (View Full Article)
(Motor Controls and Drives)
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Variable frequency drives (VFD) are becoming more common place and more widely used in applications. They are capable of varying the output speed of a motor without the need for mechanical pulleys,... (View Full Article)
(Motor Controls and Drives)
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Automatic retry can double the noise immunity of real-time industrial Ethernet-based motion networks.... (View Full Article)
(Process Controllers)
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Designers of real-time motion control systems expect Ethernet-based motion networks to transport cyclic command and feedback data at specified intervals with perfect data integrity. The designer's... (View Full Article)
(Motor Controls and Drives)
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Metro Irrigation Supply successfully installed a Gicon pump station at a local high school football field and reduced energy consumption by utilizing Yaskawa iQpump1000 variable speed drives.... (View Full Article)
(Motor Controls and Drives)
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The article "Matrix drives reduce energy consumption for transporter system" by Mike Grant, an engineer at Yaskawa, appeared on Control Engineering's website. The article goes into how Yaskawa... (View Full Article)
(Motor Controls and Drives)
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A prepackaged chiller retrofit cuts energy costs by 30%, reduces required maintenance, and extends operating life at Duke Realty Corp.'s 19-story office building in Clayton, Mo.... (View Full Article)
(Motor Controls and Drives)
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Imagine you are a surgeon in the middle of a major operation. Suddenly, one of the variable-frequency drives (VFDs) in your operating-room air-handling system develops a fault and stops running,... (View Full Article)
(Motor Controls and Drives)
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Learning objectives Understand fan arrays. Learn how VFDs can operate fan arrays. Understand how to best maintain controlled airflow in a critical operation incorporating VFDs and fan arrays.... (View Full Article)
(Motor Controls and Drives)
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When an electric motor is driven by a variable frequency drive (VFD), electric power delivered to the motor is regenerated while the motor decelerates by applying negative torque to the motor shaft.... (View Full Article)
(Motor Controls and Drives)
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Precise speed control of AC motors is typically accomplished with a variable frequency drive (VFD) connected to a speed or position feedback sensor. In certain situations, however, it's possible to... (View Full Article)
(Motor Controls and Drives)
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Although VFD manufacturers have made many advances in terms of ease of use, some users still find programming and monitoring with a 2-inch display tedious. This is where VFD programming and monitoring... (View Full Article)
(Motor Controls and Drives)
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Learn the terminology used to describe VFD internal operations and external interfaces - and you'll understand their application more thoroughly.... (View Full Article)
(Motor Controls and Drives)
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Providing cost, space, and energy efficiency for VFD applications.... (View Full Article)
(Motor Controls and Drives)
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Knowing the truth about VFD operation can simplify the selection process for choose a variable frequency drive.... (View Full Article)
(Process Controllers)
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This alternative technology is ideal for petrochemical applications.... (View Full Article)
(Motor Controls and Drives)
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Before you rip that variable frequency drive (VFD) off the wall and send it in for a rebuild, stop. Some simple checks diagnose a VFD in moments. Here's how to make the necessary inspections with a... (View Full Article)
(Motor Controls and Drives)
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A permanent magnet motor is an ac motor that uses magnets imbedded into or attached to the surface of the motor's rotor. This article provides understanding behind the terminology, concepts, theory,... (View Full Article)
(Motor Controls and Drives)
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In very basic terms, power factor is expressed as the ratio of real power, kilowatts (kW), to apparent power, kilovolt-amperes (kVA). A desirable ratio of near unity results when the real power and... (View Full Article)
(Motor Controls and Drives)
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Controlling Multiple Motors with One VFD Saves Money and Space... (View Full Article)
(Machine and Motion Controllers)
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An influent pump station in Washington incorporated control technology that improved system efficiency and energy savings.... (View Full Article)
(Motor Controls and Drives)
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Advanced VFD technology delivers cost and space savings by providing protective features and minimal programming.... (View Full Article)