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Simple sensorless algorithm for interior permanent magnet synchronous motors based on high-frequency voltage injection method

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IET ELECTRIC POWER APPLICATIONS 2014年第2期8卷 68-75页

作者： Park, Nae-Chun Kim, Sang-Hoon Kangwon Natl Univ Dept Elect & Elect Engn Chunchon Kangwon Do South Korea

This study presents a simple sensorless algorithm based on the high-frequency signal injection for an interior permanent magnet synchronous motor. The sensorless drive using a square-wave-type injection signal has an enhanced control bandwidth and reduced acoustic noise owing to the reduction of filters and availability of high injection frequency. However, this method still needs discrete filters to extract the fundamental and the injected frequency component currents;so it has a limitation in enhancing the sensorless control performance. Therefore this study proposes a simple algorithm, which eliminates these filters and further simplifies the signal process for estimating the rotor position. As a result, the overall sensorless control can be implemented easily without any filters while providing an enhanced dynamics. Additionally, a detection method of an initial rotor position for start-up by using the same square-wave-type voltage injection is introduced. The experimental result shows that the speed control bandwidth in the sensorless drive simplified by the proposed algorithm becomes very close to the one achieved in sensored drives.

关键词： permanent magnet motors signal processing synchronous motors sensorless machine control sensorless algorithm interior permanent magnet synchronous motors high-frequency voltage injection method high-frequency signal injection sensorless drive square-wave-type injection signal acoustic noise reduction filter reduction injection frequency discrete filters injected frequency component currents sensorless control rotor position estimation square-wave-type voltage injection speed control bandwidth

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Current sensorless Control algorithm of DSTATCOM for Power Quality Improvement 12

Current Sensorless Control Algorithm of DSTATCOM for Power Q...

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12 IEEE Int C Elect Energy Env Communications Computer Control

作者： Kant, Krishan Arya, Sabha Raj Singh, Bhim Exicom Telesystems Ltd R&D Power Elect Gurgaon 122015 Haryana India SV Natl Inst Technol Dept Elect Engn Surat 395007 Gujarat India IIT Delhi Dept Elect Engn New Delhi 110016 India

ISBN: (纸本)9781467365406

This paper presents a current sensorless based control algorithm of a DSTATCOM (Distribution Static Compensator) employed in three phase distribution system with a neutral conductor. The control algorithm emulates the load and DSTATCOM collectively as a balanced resistive load for the supply system. This feature allows the algorithm to estimate the current in real time and eliminates the current sensor requirement. The algorithm is derived for a modified topology of DSTATCOM in the system which advantages are described in this paper. The algorithm is simple and can be implemented with much lesser calculation than the other complex algorithms and it has an appreciable cost impact due to elimination of costly closed loop current sensors. This algorithm is effective in mitigating the various power quality problems like neutral current compensation, reactive power compensation, harmonics currents mitigation and load balancing in the distribution system.

关键词： sensorless algorithm DSTATCOM Power Quality Neutral Current Compensation Voltage Source Converter

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Voltage sensorless Control algorithm for Power Quality Improvement in Distribution Network 18

Voltage Sensorless Control Algorithm for Power Quality Impro...

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18th National Power Systems Conference (NPSC)

作者： Kant, Krishan Arya, Sabha Raj Singh, Bhim Alstom Transport India Ltd Bangalore 560093 Karnataka India SV Natl Inst Technol Elect Engn Dept Surat 395007 Gujarat India IIT Delhi Elect Engn Dept New Delhi 110016 India

ISBN: (纸本)9781479951413

In this paper, a voltage sensorless control algorithm based on voltage estimators is used to control the DSTATCOM (Distribution Static Compensator) for a three phase four wire distribution system. The control algorithm emulates the load and DSTATCOM collectively as a balanced resistive load on the supply system. This algorithm functions as an estimator and eliminates the voltage sensor requirement. This algorithm is derived for a modified topology of DSTATCOM in the system which advantages are described in this paper. Due to simplicity of the algorithm, it can be easily implemented with reduced calculation than other complex algorithms. This algorithm is very effective in mitigating the various power quality problems like large neutral current due to unbalanced or nonlinear loads, reactive power consumption, harmonics current injection, voltage regulation in the distribution system.

关键词： sensorless algorithm DSTATCOM power quality harmonic filter modulating signals

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Discrete Time Sliding Mode Observers for sensorless Vector Control of PMSM

Discrete Time Sliding Mode Observers for Sensorless Vector C...

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20th International Conference on Electrical Machines (ICEM)

作者： Bernardes, Thiago Gruendling, Hilton Abilio Pinheiro, Humberto Univ Fed Santa Maria Grp Power Elect & Control BR-97105900 Santa Maria RS Brazil

ISBN: (纸本)9781467301428

This paper proposes a new discrete-time sensorless algorithm for current vector control of permanent magnet synchronous machines (PMSM). A discrete-time sliding mode current observer is proposed as well as the sliding and convergence conditions of the sliding mode are established. Then, an electric speed identification is proposed by using Lyapunov's direct method via a electromotive force (EMF) observer in the discrete-time domain. In addition, the stability of the proposed discrete-time observers is presented, and from them, the conditions to ensure convergence are derived. Therefore, the rotor position is identified directly of the observed EMF. Finally, experimental results are given to support the theoretical analysis as well as to demonstrate the good performance of the proposed discrete-time sensorless algorithm.

关键词： Lyapunov's direct method sliding mode current vector control sensorless algorithm EMF observer

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Fail-safe Control Strategy of Traction Motor in Electric Mobility with sensorless Control Scheme

Fail-safe Control Strategy of Traction Motor in Electric Mob...

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IEEE 75th Vehicular Technology Conference (VTC Spring)

作者： Kim, Ilhan Kim, Hyeongsu Kwon, Taesuk Lee, Hyeoundong Hyundai Mobis Elect Drive Engn Team Mabuk Ro Yongin Si South Korea

ISBN: (纸本)9781467309905;9781467309882

A motor in electric mobility is utilized Eco-friendly vehicles for traction usually. The rotor position is critical factor in motor drive area. If the sensing of rotor position is fail due to potential faults, eco-friendly vehicles are uncontrollable by a driver. This paper proposes a novel sensorless algorithm to estimate the rotor position of interior permanent magnet synchronous motor (IPMSM). The algorithm is used to control vehicle by a fail-safe logic and it can be applied the continuous operation of vehicle, when the sensing of position is fail. This algorithm is comprised of two methods that can be applied in entire speed region. The first is the extended EMF method that uses the extended EMF model with the information of position error. The method is applied to the mid-high speed region of rotor. The second is the high-frequency injection method that estimates the rotor position using the injected high-frequency voltage signal. This method is applied to low-speed region which include zero speed, because there is no EMF or the magnitude of EMF is very small. Finally, the algorithm in this paper is utilized the two explained kinds of method and is verified by experimental results.

关键词： Inverter Interior Permanent Magnet Synchronous Motor Position Sensor sensorless algorithm Fail-Safe Logic

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sensorless Start-up Method of LCI system for Gas-Turbine 9

Sensorless Start-up Method of LCI system for Gas-Turbine

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9th International Conference on Power Electronics / Energy Conversion Congress and Exposition Asia (ICPE-ECCE Asia)

作者： An, Hyunsung Cha, Hanju Chungnam Natl Univ Daejeon South Korea

ISBN: (纸本)9788957082546

This paper proposes a senseless start-up method of load commutated inverter system by using a modified integrator with an adaptive compensation. The sensorless algorithm is composed of flux estimator by a modified integrator with an adaptive compensation and rotor angle/speed estimator based on phase locked loop. The flux estimator consists of low pass filter, quadrature detector and PI controller. The quadrature detector is used to detect the phase difference between the machine voltage and estimated flux through modified integrator. The modified integrator is used instead of the pure integrator to eliminate DC offset and DC drift problems. Operation modes of LCI system are investigated, and the performance of sensorless algorithm and operation modes is verified by simulation results. To verify feasibility of the algorithm, 5kVA prototype of load commutated inverter system has been implemented. The performance of operation mode and sensorless algorithm is verified through experiment results at all speed range.

关键词： Gas-Turbine SFC system LCI system sensorless algorithm Modified integrator adaptive compensation

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A new automatic cardiac output control algorithm for moving actuator total artificial heart by motor current waveform analysis

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INTERNATIONAL JOURNAL OF ARTIFICIAL ORGANS 1996年第3期19卷 189-196页

作者： Choi, WW Kim, HC Min, BG Department of Biomedical Engineering Seoul National University Seoul - Korea

A new automatic cardiac output control algorithm for an implantable electromechanical total artificial heart (TAH) was developed based on the analysis of motor current waveform without using any transducer. The basic control requirements of an artificial heart can be described in terms of three features: preload sensitivity afterload insensivity, and balanced ventricular output. In previous studies, transducers were used to acquire information on the hemodynamic states for automatic cardiac output control. However, such a control system has reliability problems with the sensors. We proposed a novel sensorless automatic cardiac output control algorithm (ACOCA) providing adequate cardiac output to the time-varying physiological demand without causing right atrial collapse, which is one of the critical problems in an active filling device. In vitro tests were performed on a mock circulatory system to assess the performance of the developed algorithm and the results show that the new algorithm satisfied the basic control requirements of the cardiac output response.

关键词： cardiac output control sensorless algorithm right atrial collapse active filling electromechanical TAH

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Regression Model-Based Flux Observer for IPMSM sensorless Control with Wide Speed Range

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ENERGIES 2021年第19期14卷 6249页

作者： Choi, Jongwon Hannam Univ Dept Elect & Elect Engn Daejeon 34430 South Korea

A new linear regression form is derived for a flux observer and a position observer is designed. In general, the observability of the permanent-magnet synchronous motor is lost at zero speed. In this work, the proposed regressor vector contains current derivative terms in both directions (dq-axis), and it gives the chance for the model-based flux observer to operate at zero speed. When an excitation signal is injected into d and q axes with the proposed flux observer, it helps to satisfy the persistent excitation condition in the low-speed range. Therefore, the sensorless performance of the model-based is improved greatly, even at zero speed. However, it appears with a disturbance term, which depends on the derivative of the d-axis current. Thus, the disturbance does not vanish when an excitation signal is injected. In this work, the disturbance term is also taken care of in constructing an observer. It results in an observer which allows signal injection. Thus, high frequency signal can be injected in the low speed region and turned off when it is unnecessary as the speed increases. This model-based approach utilizes the signal injection directly without recurring to a separate high frequency model. In other words, it provides a seamless transition without switching to the other algorithm. The validity is demonstrated by simulation and experimental results under various load conditions near zero speed.

关键词： linear regression form sensorless algorithm IPMSM active flux nonlinear observer gradient algorithm persistence of excitation signal injection

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High Efficiency Multi-Drive System for a Hybrid Electric Catamaran with Submersed PM Synchronous Motors

High Efficiency Multi-Drive System for a Hybrid Electric Cat...

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International Conference on Electrical Machines

作者： Bolognani, S. Faggion, A. Sgarbossa, L. Univ Padua Dept Elect Engn I-35131 Padua Italy

ISBN: (纸本)9781424417353

An High Efficiency Systems for a Multi-Drive Hybrid Electric Catamaran is presented. Design choices are discussed in the first part of the paper. On board electric system and power flow are then detailed, illustrating the main components. In the second part of the paper, the distinctive sensorless control of the Permanent Magnet Synchronous motor is described and validated by experimental results.

关键词： PM Motor sensorless algorithm Hybrid propulsion system

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Fail-safe Control Strategy of Traction Motor in Electric Mobility with sensorless Control Scheme

Fail-safe Control Strategy of Traction Motor in Electric Mob...

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IEEE Vehicular Technology Conference

作者： Ilhan Kim Hyeongsu Kim Taesuk Kwon Hyeoundong Lee Electric Drive Engineering Team Hyundai Mobis Mabuk-Ro Yongin-Si Korea

ISBN: (纸本)9781467309899

关键词： Inverter Interior Permanent Magnet Synchronous Motor Position Sensor sensorless algorithm Fail-Safe Logic rotor position Electromagnetic fields European Monetary Fund electromotive forces control strategy Sensors vehicle Traction motors zero speed location error Scheme low speed continuous operation sensorless control

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