Motor Drives, Robotics & Controls

May 2023
­Introduction Effective galvanic isolation is crucial in high-voltage applications to prevent unwanted leakage currents from flowing between two parts of a system with different ground potentials (GPD) [1]. As depicted in Figure 1 (left), the DC return current from the input to the output can cause a potentia
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Date:
05/14/2023

­1 watt DC/DC converters with 480 VAC isolation voltage

TRACO POWER’s new TRI 1 and TRI 1SM

  The core characteristic of the TRI 1(SM) series is a sophisticated reinforced isolation system which is able to withstand high test voltages (8000 VDC for 1s and 3000 VAC for 60s) and working voltages (480 VACrms). Efficiencies up to 84% allow safe operation from –40°C to +85°C without derating.
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Date:
05/10/2023
Multilevel Topology Reference Demo Addresses 850 VDC Applications with 650V GaN Fulfilling EV and Industrial Requirements

Multilevel Topology Reference Demo Addresses 850 VDC Applications with 650V GaN Fulfilling EV and Industrial Requirements

­Innoscience Technology has collaborated with the Bern University of Applied Sciences (BFH) to deliver a reference demo that employs Innoscience’s 650V InnoGaN HEMT devices in a multilevel topology to address 850VDC applications such as e-mobility motor drivers, solar and industrial inverters, EV fast chargers, an
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Date:
05/10/2023
Reliability and Performance for Motor Control Encoders

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Figure 1: Using RS-485 to interface between the absolute encoder slave to servo drive master for closed-loop control of an ac motor

­The primary purpose of a motor control encoder is to measure angular position and speed measurement. Figure 1 shows a motor control signal chain using RS-485 transceivers and microprocessor to interface between the absolute encoder (ABSencoder) slave and industrial servo drive master for closed-loop control of
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Date:
05/01/2023
Robust Power, Communication, and Safety for Automation

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Figure 1: An M23 cordset showing a 23 mm receptacle with a female 8-pole insert (Image source: Molex)

­Industrial automation has transformed the modern factory. Communication is now just as important as the electricity used for the drives and servo motors of the large machines that manufacture goods, and safety is critical as humans and robots work close together. The challenge for the automation engineer is se
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Date:
05/01/2023
Enhancing Motor Performance in Demanding Systems with Advanced Current Sensing

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Figure 1: Electrification is affecting many different facets of our world – but the biggest and most visible impact may be in the area of vehicles - electric cars, buses, trucks and even bicycles

­One of the best ways to address motor-control circuit optimization is with advanced current-sensing solutions. We live in a time of disruptive growth, as new technologies are both benefiting and challenging society, with advances ranging from alternate energy systems to wide-bandgap semiconductors. One as
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Date:
05/01/2023
Field Oriented Control of Brushless DC Motors

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Figure 1: BLDC motor six-step trapezoidal compared with sinusoidal drive waveforms

­There are many types of motors with their own pros and cons, but brushless DC (BLDC) types have become ubiquitous for their excellent efficiency, high performance, long life and low electrical and audible noise. If they have a downside, it is the relative complexity of the electrical drive, usually requiring th
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Date:
05/01/2023
Growing GaN Ecosystem for BLDC Motor Drives

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Figure 1: EPC Motor Drive Reference Design Power boards

­So far, silicon-based power devices have been dominant in inverter electronics, but today their performance is nearing its theoretical limits. There is an increasing need for higher power density. Gallium nitride (GaN) transistors and ICs have the best attributes to satisfy BLDC inverter needs. The super
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Date:
05/01/2023
The Role of IGBTs in Increasing Motor Drive Efficiency

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Figure 1: Illustrates a typical motor drive design that has a Power Factor Correction (PFC) input rectifier

­Designs using motor drives, such as for electric vehicles, pumps, and fans, are being pushed to reduce the overall costs as well as decrease energy consumption in these same electric motor applications. Therefore, the selection of highly efficient devices for electric motors and their drives, and making sure ea
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Date:
05/01/2023
Putting the CIM into PCIM

Ally Winning, European Editor, PSD

In Europe, and most likely the rest of the world, May is the biggest month in the year for the power industry. That is because it is because it is when PCIM, the largest and most important power exhibition in the industry, is held. PCIM is the perfect meeting place for buyers and sellers to interact - where an
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Date:
05/01/2023
Power Electronics in Orlando and a Motorized May

Jason Lomberg, North American Editor, PSD

­What a show! What an APEC! While I cover 2023’s Applied Power and Electronics Conference in more detail in my “Final Thought” this month, I just wanted to wanted to give a huge shoutout to the Orange County Convention Center, the city of Orlando, and all the companies, PR reps, press, and analysts
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Date:
05/01/2023
The Future of Motor Drives, Robotics, + Controls

Kevin Parmenter, Director, Applications Engineering. TSC, America

­The global robotics technology market size was valued at $62.75 billion in 2019 and is projected to reach $189.36 billion by 2027, growing at a CAGR of 13.5% from 2020 to 2027, according to Allied market research. Robotics, motor drives and controls were once separate application areas and markets. Now they ar
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Date:
05/01/2023
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