Demodulation approach for slowly sampled sensorless field-oriented control systems enabling multiple-frequency injections

Marco Roetzer; Ulrich Vollmer; Ralph Kennel

doi:10.1109/IAS.2016.7731861

Demodulation approach for slowly sampled sensorless field-oriented control systems enabling multiple-frequency injections

Marco Roetzer
, Ulrich Vollmer
, Ralph Kennel

Chair of High-Power Converter Systems

Robert Bosch GmbH

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

10 Scopus citations

Abstract

This paper describes a demodulation approach based on the least squares method for a saliency based position estimation in slowly sampled field-oriented control systems. The proposed approach focuses on the sensorless control of electrical drives in which the sample rate of the control task is chosen slower than both the maximum possible update rate of the phase voltages and the maximum possible sample rate of the phase current measurement by a multiple. Under those conditions it is possible to inject multiple-frequency carrier signals between two successive control sampling instances without affecting the control. Furthermore, a combined demodulation of these signals is enabled by exploiting the constant manipulated variables of the field-oriented control system during the injection sequence. With the proposed method the signal-to-noise-ratio (SNR) of the calculated rotor position as well as the acoustic noise produced by signal injections can be optimized. The approach is implemented in a field-oriented control for permanent magnet synchronous machines (PMSM) and is verified in experiments.

Original language	English
Title of host publication	IEEE Industry Application Society, 52nd Annual Meeting
Subtitle of host publication	IAS 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781467386715
DOIs	https://doi.org/10.1109/IAS.2016.7731861
State	Published - 2 Nov 2016
Event	52nd Annual Meeting on IEEE Industry Application Society, IAS 2016 - Portland, United States Duration: 2 Oct 2016 → 6 Oct 2016

Publication series

Name	IEEE Industry Application Society, 52nd Annual Meeting: IAS 2016

Conference

Conference	52nd Annual Meeting on IEEE Industry Application Society, IAS 2016
Country/Territory	United States
City	Portland
Period	2/10/16 → 6/10/16

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Carrier Signal Injection
Multiple-Frequency Injection
Permanent magnet machines
Self-Sensing
Sensorless Control

Access to Document

10.1109/IAS.2016.7731861

Cite this

Roetzer, M., Vollmer, U., & Kennel, R. (2016). Demodulation approach for slowly sampled sensorless field-oriented control systems enabling multiple-frequency injections. In IEEE Industry Application Society, 52nd Annual Meeting: IAS 2016 Article 7731861 (IEEE Industry Application Society, 52nd Annual Meeting: IAS 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IAS.2016.7731861

Roetzer, Marco ; Vollmer, Ulrich ; Kennel, Ralph. / Demodulation approach for slowly sampled sensorless field-oriented control systems enabling multiple-frequency injections. IEEE Industry Application Society, 52nd Annual Meeting: IAS 2016. Institute of Electrical and Electronics Engineers Inc., 2016. (IEEE Industry Application Society, 52nd Annual Meeting: IAS 2016).

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title = "Demodulation approach for slowly sampled sensorless field-oriented control systems enabling multiple-frequency injections",

abstract = "This paper describes a demodulation approach based on the least squares method for a saliency based position estimation in slowly sampled field-oriented control systems. The proposed approach focuses on the sensorless control of electrical drives in which the sample rate of the control task is chosen slower than both the maximum possible update rate of the phase voltages and the maximum possible sample rate of the phase current measurement by a multiple. Under those conditions it is possible to inject multiple-frequency carrier signals between two successive control sampling instances without affecting the control. Furthermore, a combined demodulation of these signals is enabled by exploiting the constant manipulated variables of the field-oriented control system during the injection sequence. With the proposed method the signal-to-noise-ratio (SNR) of the calculated rotor position as well as the acoustic noise produced by signal injections can be optimized. The approach is implemented in a field-oriented control for permanent magnet synchronous machines (PMSM) and is verified in experiments.",

keywords = "Carrier Signal Injection, Multiple-Frequency Injection, Permanent magnet machines, Self-Sensing, Sensorless Control",

author = "Marco Roetzer and Ulrich Vollmer and Ralph Kennel",

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year = "2016",

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doi = "10.1109/IAS.2016.7731861",

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Roetzer, M, Vollmer, U & Kennel, R 2016, Demodulation approach for slowly sampled sensorless field-oriented control systems enabling multiple-frequency injections. in IEEE Industry Application Society, 52nd Annual Meeting: IAS 2016., 7731861, IEEE Industry Application Society, 52nd Annual Meeting: IAS 2016, Institute of Electrical and Electronics Engineers Inc., 52nd Annual Meeting on IEEE Industry Application Society, IAS 2016, Portland, United States, 2/10/16. https://doi.org/10.1109/IAS.2016.7731861

Demodulation approach for slowly sampled sensorless field-oriented control systems enabling multiple-frequency injections. / Roetzer, Marco; Vollmer, Ulrich; Kennel, Ralph.
IEEE Industry Application Society, 52nd Annual Meeting: IAS 2016. Institute of Electrical and Electronics Engineers Inc., 2016. 7731861 (IEEE Industry Application Society, 52nd Annual Meeting: IAS 2016).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Demodulation approach for slowly sampled sensorless field-oriented control systems enabling multiple-frequency injections

AU - Roetzer, Marco

AU - Vollmer, Ulrich

AU - Kennel, Ralph

PY - 2016/11/2

Y1 - 2016/11/2

N2 - This paper describes a demodulation approach based on the least squares method for a saliency based position estimation in slowly sampled field-oriented control systems. The proposed approach focuses on the sensorless control of electrical drives in which the sample rate of the control task is chosen slower than both the maximum possible update rate of the phase voltages and the maximum possible sample rate of the phase current measurement by a multiple. Under those conditions it is possible to inject multiple-frequency carrier signals between two successive control sampling instances without affecting the control. Furthermore, a combined demodulation of these signals is enabled by exploiting the constant manipulated variables of the field-oriented control system during the injection sequence. With the proposed method the signal-to-noise-ratio (SNR) of the calculated rotor position as well as the acoustic noise produced by signal injections can be optimized. The approach is implemented in a field-oriented control for permanent magnet synchronous machines (PMSM) and is verified in experiments.

AB - This paper describes a demodulation approach based on the least squares method for a saliency based position estimation in slowly sampled field-oriented control systems. The proposed approach focuses on the sensorless control of electrical drives in which the sample rate of the control task is chosen slower than both the maximum possible update rate of the phase voltages and the maximum possible sample rate of the phase current measurement by a multiple. Under those conditions it is possible to inject multiple-frequency carrier signals between two successive control sampling instances without affecting the control. Furthermore, a combined demodulation of these signals is enabled by exploiting the constant manipulated variables of the field-oriented control system during the injection sequence. With the proposed method the signal-to-noise-ratio (SNR) of the calculated rotor position as well as the acoustic noise produced by signal injections can be optimized. The approach is implemented in a field-oriented control for permanent magnet synchronous machines (PMSM) and is verified in experiments.

KW - Carrier Signal Injection

KW - Multiple-Frequency Injection

KW - Permanent magnet machines

KW - Self-Sensing

KW - Sensorless Control

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M3 - Conference contribution

AN - SCOPUS:85002187751

T3 - IEEE Industry Application Society, 52nd Annual Meeting: IAS 2016

BT - IEEE Industry Application Society, 52nd Annual Meeting

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 52nd Annual Meeting on IEEE Industry Application Society, IAS 2016

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Roetzer M, Vollmer U, Kennel R. Demodulation approach for slowly sampled sensorless field-oriented control systems enabling multiple-frequency injections. In IEEE Industry Application Society, 52nd Annual Meeting: IAS 2016. Institute of Electrical and Electronics Engineers Inc. 2016. 7731861. (IEEE Industry Application Society, 52nd Annual Meeting: IAS 2016). doi: 10.1109/IAS.2016.7731861

Demodulation approach for slowly sampled sensorless field-oriented control systems enabling multiple-frequency injections

Abstract

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UN SDGs

Keywords

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