More than Drivers in Motor Drives: Closing the Loop

2015 ◽  
Vol 2015 (HiTEN) ◽  
pp. 000179-000188
Author(s):  
Gonzalo Picun ◽  
Khalil El-Falahi ◽  
Christophe Pautrel ◽  
Yoann Duse ◽  
Nicolas Joubert ◽  
...  
Keyword(s):  
Motor Drives ◽  
Power Supplies ◽  
Linear Regulator ◽  
Communication Controller ◽  
Closing The Loop ◽  
Basic Functions ◽  
Gate Driver ◽  
Linear Regulators ◽  
Current Monitoring ◽  
First Time

This paper presents the problematic associated to the design of a complete motor drive, exposing all available and missing blocks at this moment. We proceed by dividing the power drive into basic functions – control, different power supplies, isolated communication, controller interfacing, current monitoring – and we present for each of these functions an implementation example. Implementation examples shown are based on high-temperature X-REL parts such as XTR26020 Isolated Intelligent Gate Driver, XTR40010 Isolated Two Channel Transceiver, XTR30010 PWM Controller, XTR70010 and XTR70020 Low-dropout Linear Regulators and XTR50010 Bidirectional Multichannel Level Translator. A drive solution based on the XTR26020, presented for the first time in this paper, is explained and compared against previous art. Main characteristics of the new linear regulator XTR70020 are presented, showing the best-in-class dropout voltage, which outperforms the closest competitor by a factor of three. For all parts featured, tests results at an ambient temperature up to 230°C (even higher in some cases) are presented.

scholarly journals A special high-frequency soft-switched DC/DC power supply for GCT gate driver

2021 ◽  
Author(s):  
Jahangir Afsharian
Keyword(s):  
Power Supply ◽  
High Frequency ◽  
Optimization Procedure ◽  
Power Supplies ◽  
Zero Voltage Switching ◽  
General Power ◽  
Gate Driver ◽  
Isolation Transformer ◽  
Experimental Use ◽  
Gate Drivers

This thesis is devoted to the development of a novel parallel isolated power supply (PIPS) for the gate driver of integrated Gate Commutated Thyristors (GCT). The proposed PIPS is essentially a special high frequency soft switched DC/DC converter, integrating six parallel isolated power supplies in one module where each power supply generates a regulated dc supply for the GCT gate driver. In commercial GCT power supplies, a high-voltage isolation transformer is indispensable but highly inefficient in terms of cost and size, which can be significantly improved by the optimized transformer. In all, this design strives to achieve a general power supply for powering up the gate drivers of all types of GCT devices in all MV applications with minimal changes in configuration. In this thesis, the configuration of PIPS is presented and its operating principle is elaborated. The transformer optimization procedure satisfying the voltage isolation requirement of GCT gate drivers is extensively discussed. The performance of PIPS, including the front end DC/DC converter, zero voltage switching phase-shift full bridge (ZVS-PS-FB) converter, and the optimization of the transformer, is verified by simulations and experiments where a 360W laboratory prototype is built for the experimental use.

Characterization and Analysis of an Innovative Gate Driver and Power Supplies Architecture for HF Power Devices With High dv/dt

2017 ◽  
Vol 32 (8) ◽  
pp. 6079-6090 ◽  
Author(s):  
Van-Sang Nguyen ◽  
Lyubomir Kerachev ◽  
Pierre Lefranc ◽  
Jean-Christophe Crebier
Keyword(s):  
Power Supplies ◽  
Power Devices ◽  
Gate Driver

scholarly journals A special high-frequency soft-switched DC/DC power supply for GCT gate driver

2021 ◽  
Author(s):  
Jahangir Afsharian
Keyword(s):  
Power Supply ◽  
High Frequency ◽  
Optimization Procedure ◽  
Power Supplies ◽  
Zero Voltage Switching ◽  
General Power ◽  
Gate Driver ◽  
Isolation Transformer ◽  
Experimental Use ◽  
Gate Drivers

This thesis is devoted to the development of a novel parallel isolated power supply (PIPS) for the gate driver of integrated Gate Commutated Thyristors (GCT). The proposed PIPS is essentially a special high frequency soft switched DC/DC converter, integrating six parallel isolated power supplies in one module where each power supply generates a regulated dc supply for the GCT gate driver. In commercial GCT power supplies, a high-voltage isolation transformer is indispensable but highly inefficient in terms of cost and size, which can be significantly improved by the optimized transformer. In all, this design strives to achieve a general power supply for powering up the gate drivers of all types of GCT devices in all MV applications with minimal changes in configuration. In this thesis, the configuration of PIPS is presented and its operating principle is elaborated. The transformer optimization procedure satisfying the voltage isolation requirement of GCT gate drivers is extensively discussed. The performance of PIPS, including the front end DC/DC converter, zero voltage switching phase-shift full bridge (ZVS-PS-FB) converter, and the optimization of the transformer, is verified by simulations and experiments where a 360W laboratory prototype is built for the experimental use.

scholarly journals Exploring ion channel mechanisms : from toxin-based tools to computational methods

2016 ◽  
Author(s):  
◽  
Autoosa Salari
Keyword(s):  
Ion Channels ◽  
Ion Channel ◽  
Building Blocks ◽  
Proper Function ◽  
Computational Techniques ◽  
Pharmacological Agents ◽  
Cellular Excitability ◽  
Basic Functions ◽  
Five Senses ◽  
First Time

Ion channels are the building blocks of cellular excitability, controlling the most basic functions necessary for life to the most complex behaviors. The research presented here addresses questions about the mechanisms by which different ion channels function, as well as, how various toxins from venomous animals can alter ion channel behavior. This was done using a combination of molecular biology, electrophysiology, and computational techniques. The results shed light on the specific structures of a channel required for proper function, and target by pharmacological agents. Importantly, these results have significance in developing animal toxins as research tools and as future therapeutic agents for ion channel associated diseases. Lastly, we demonstrate for the first time, a system to study a protein required for high temperature avoidance in fruit flies. This opens the door to addressing detailed questions about the most poorly understood of the five senses, temperature sensation.

scholarly journals CMOS-NAND Based Gate Driver Card of IGBT for Fault Diagnosis in VSI

2020 ◽  
Vol 9 (10) ◽  
pp. 425-428
Keyword(s):  
Fault Diagnosis ◽  
Short Circuit ◽  
Load Condition ◽  
Open Circuit ◽  
Motor Drives ◽  
Matlab Simulation ◽  
Insulated Gate Bipolar Transistor ◽  
Gate Driver ◽  
Fault Clearance ◽  
Motor Drive System

In industrial application, over loading condition, short circuit is the dominant fault in the motor drives. There are many reasons for the fault but due to this insulated gate bipolar transistor (IGBT) gets damaged which affect the whole system. Protecting IGBT and hence protecting motor drive system at fault condition is the crucial and insistent part of the protection. The short circuit and open circuit fault in an IGBT can be detected by several techniques. The paper presents an idea to deals with the short circuit fault such as fault under over load condition in the typical applications like winder machine. In this paper both the fault diagnosis and clearance of the fault are done. Fault diagnosis is based on the voltage between the collector and the emitter (VCE) of the IGBT which can be done by actual short circuit between these points in the simulation. Voltages of healthy and faulty condition are analyzed. In the fault clearance, CMOS-NAND based circuitry is used called EH10 card for inverter. It shows that this card has ability to detect the fault across the switch and give the signal to microcontroller for its clearance by making GATE signal of the IGBTs zero. This protection of Inverter using realization of CMOS-NAND based GATE driver card is verified using MATLAB simulation results.

scholarly journals Desain Rangkaian Gate Driver Analog untuk Dual Mosfet Drivers

2021 ◽  
Vol 21 (2) ◽  
pp. 714
Author(s):  
Hendi Matalata ◽  
Rozlinda Dewi
Keyword(s):  
Power Converter ◽  
Power Supplies ◽  
Pwm Control ◽  
Space Vector Pwm ◽  
Space Vector ◽  
Analog Ic ◽  
Advantages And Disadvantages ◽  
Harmonic Elimination ◽  
Driver Circuit ◽  
Gate Driver

Switching techniques have been continued to develop, including sinusoidal PWM, space vector PWM, current tracking PWM, harmonic elimination PWM and others. Each method has advantages and disadvantages, but the most commonly used methods are sinusoidal PWM and space vector PWM. PWM that is generated using a microcontroller or analog IC component generally has a maximum voltage value of 5V. To strengthen the PWM wave, a gate-driver circuit is needed, so that the PWM control wave is able to move the IGBT / MOSFET. On this paper, the design of gate driver circuit use An analog IC, which starts from the generation of two waves, namely a sinusoidal wave and a DC source to be compared (Comparator) so that it can produce a PWM wave. Then this PWM wave is isolated using an optocoupler and MOSFET driver IC to limit interference in the switching process on high power supplies. Based on the results, it can be cancluded PWM control wave output from the gate-driver circuit is isolated from the system intended for designing a power converter and other applications.

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