Search Results - "Holtz, Joachim"

Synchronous Optimal Pulsewidth Modulation for Low-Switching-Frequency Control of Medium-Voltage Multilevel Inverters by Rathore, Akshay K, Holtz, Joachim, Boller, Till

“…This paper presents the mechanism and details of synchronous optimal pulsewidth modulation (PWM) generation for control of medium-voltage induction motor…”
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Harmonic quality control strategy for single distributed resource of islanded microgrid at low switching frequency operation by Qi, Xin, Wang, Chenyu, Holtz, Joachim, Yang, Kang, Pacas, Mario, Xu, Deming

“…•In order to solve the problem that the pulsewidth modulation strategy has poor dynamic characteristics at low switching frequencies, a predictive method is…”
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Advanced PWM and Predictive Control-An Overview by Holtz, Joachim

“…Synchronous optimal modulation and predictive current control and their preferred applications in drive control systems are described. Operation at low…”
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Initial Rotor Polarity Detection and Sensorless Control of PM Synchronous Machines by Holtz, J.

“…Sensorless control of a PM synchronous machine at low and zero speed is based on the injection of an oscillating high-frequency carrier signal. A particular…”
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Predictive Finite-State Control-When to Use and When Not by Holtz, Joachim

“…A multistep predictive algorithm eliminates overshoots of the current vector outside the boundary circle while the processor identifies the next optimal…”
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Event Driven Control of Voltage and Current Gradients of Medium Voltage IGBTs by Holtz, Joachim

“…Medium voltage insulated gate bipolar transistors are fast switching devices that require low gate drive power. They inherently generate high voltage and…”
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Modeling and Control of Low Switching Frequency High-Performance Induction Motor Drives by Qi, Xin, Holtz, Joachim

“…Complex state variables are used to study the dynamic behavior of induction motors considering the propagation in space of the distributed magnetic field…”
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Complex State Variables as Analytical Tool for Control System Design of Medium-Voltage Drives by Holtz, Joachim

“…Complex state variables are used to analyze the dynamics of medium-voltage drives. These operate at low switching frequency to reduce the dynamic losses of the…”
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The Relationship Between Root Locus and Transient Field Components of AC Machines by Qi, Xin, Holtz, Joachim

“…The dynamic analysis of induction motors is supported by well-known theories: the two-axes transformation, and the space vector theory. Yet some…”
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Sensorless Control of Induction Machines-With or Without Signal Injection? by Holtz, J.

“…Controlled induction motor drives without mechanical speed sensors at the motor shaft have the attractions of low cost and high reliability. To replace the…”
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Optimal Control of a Dual Three-Level Inverter System for Medium-Voltage Drives by Holtz, Joachim, Oikonomou, Nikolaos

“…Actual developments in medium-voltage drives aim at increasing the power capability of pulsewidth modulated (PWM) inverters. Parallel connection of power…”
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High dynamic speed sensorless AC drive with on-line model parameter tuning for steady-state accuracy by JIANG, J, HOLTZ, J

“…Controlled speed sensorless AC motor drives have reached a stage of development permitting good dynamic performance above 3% of rated speed. However, the…”
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Acquisition of Position Error and Magnet Polarity for Sensorless Control of PM Synchronous Machines by Holtz, J.

“…Sensorless control of a permanent-magnet synchronous machine at low and zero speed is based on the injection of an oscillating high-frequency carrier signal. A…”
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Optimal Control of Medium-Voltage Drives-An Overview by Holtz, J., Xin Qi

“…Carrier modulation is the most common method for inverter control of ac drive systems. Operation at switching frequencies of several kilohertz is customary to…”
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Medium-Voltage Multilevel Converters-State of the Art, Challenges, and Requirements in Industrial Applications by Abu-Rub, H, Holtz, J, Rodriguez, J, Ge Baoming

“…This paper gives an overview of medium-voltage (MV) multilevel converters with a focus on achieving minimum harmonic distortion and high efficiency at low…”
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Sensorless control of induction motor drives by Holtz, J.

“…Controlled induction motor drives without mechanical speed sensors at the motor shaft have the attractions of low cost and high reliability. To replace the…”
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Generalized Optimal Pulsewidth Modulation of Multilevel Inverters for Low-Switching-Frequency Control of Medium-Voltage High-Power Industrial AC Drives by Rathore, R., Holtz, H., Boller, T.

“…A generalized optimal pulsewidth modulation (PWM) technique applicable to multilevel inverters for low-switching-frequency control of medium-voltage high-power…”
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Neutral-Point Potential Balancing Using Synchronous Optimal Pulsewidth Modulation of Multilevel Inverters in Medium-Voltage High-Power AC Drives by Boller, Till, Holtz, Joachim, Rathore, Akshay K.

“…This paper presents neutral-point potential (NPP) balancing while maintaining low harmonic distortion using optimal pulsewidth modulation (PWM) of a multilevel…”
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An improved predictive power control with disturbance rejection for three-phase AC/DC converters at low switching frequency for grid operation by Qi, Xin, Wang, Chenyu, Holtz, Joachim, Zhang, Yuming, Xu, Jinjin, Zhang, Jianing, Ren, Jiashi

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A Space Vector Modulator for the High-Switching Frequency Control of Three-Level SiC Inverters by Holtz, Joachim, Holtgen, Markus, Krah, Jens Onno

“…Operating three-level inverters at very high switching frequency improves the dynamics of servo drives. It reduces the cost and size of harmonic filters that…”
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