An Advanced RDC-Less System Independent of Motor Control PWM Frequency
In permanent magnet synchronous motors, a resolver to digital converter (RDC) is used to determine the position of a rotor with a resolver. Moreover, RDCs can be used to position rotors through resolver signals. However, such processes require significant costs and space. Recently, the motor control...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10288453/ |
| _version_ | 1797635445852471296 |
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| author | Jun-Ik Uhm Sung-Jun Park Je-Suk Park Hee-Sun Lim Geun-Ho Lee |
| author_facet | Jun-Ik Uhm Sung-Jun Park Je-Suk Park Hee-Sun Lim Geun-Ho Lee |
| author_sort | Jun-Ik Uhm |
| collection | DOAJ |
| description | In permanent magnet synchronous motors, a resolver to digital converter (RDC) is used to determine the position of a rotor with a resolver. Moreover, RDCs can be used to position rotors through resolver signals. However, such processes require significant costs and space. Recently, the motor control unit (MCU) has been required to implement RDC functions for cost reduction and functional safety. To implement the RDC function with the MCU, an excitation signal must be generated based on the pulse with modulation (PWM) signal. In this paper, with a single process core environment, the PWM frequency for motor control and the PWM frequency for generating the excitation signal are different. This study describes a demodulation method that enables accurate positioning of a rotor. The sampling time of the feedback signals is determined, and the rotor position is calculated through the second-order generalized integrator frequency locked loop technique. The rotor position information calculated from the proposed RDC-less system provides the same level of accuracy as that of a system with an RDC. The proposed method was verified through simulation and experiment. Moreover, this method can be applied to exclude RDCs from a single core system and process the resolver signal by the existing MCU. |
| first_indexed | 2024-03-11T12:21:06Z |
| format | Article |
| id | doaj.art-c3ba4930b382435f866155b95197bff9 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-03-11T12:21:06Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-c3ba4930b382435f866155b95197bff92023-11-07T00:02:02ZengIEEEIEEE Access2169-35362023-01-011111933011934110.1109/ACCESS.2023.332624210288453An Advanced RDC-Less System Independent of Motor Control PWM FrequencyJun-Ik Uhm0https://orcid.org/0009-0006-0131-4791Sung-Jun Park1Je-Suk Park2https://orcid.org/0009-0000-5358-0553Hee-Sun Lim3https://orcid.org/0000-0003-3570-5046Geun-Ho Lee4https://orcid.org/0000-0002-0333-2778Electric Motor Control Laboratory, Graduate School of Automotive Engineering, Kookmin University, Seoul, South KoreaHyundai Motor Group, Gyeungi, Hwasung, Namyang, South KoreaElectric Motor Control Laboratory, Graduate School of Automotive Engineering, Kookmin University, Seoul, South KoreaDepartment of Future Mobility, Kookmin University, Seoul, South KoreaDepartment of Automotive Engineering, Kookmin University, Seoul, South KoreaIn permanent magnet synchronous motors, a resolver to digital converter (RDC) is used to determine the position of a rotor with a resolver. Moreover, RDCs can be used to position rotors through resolver signals. However, such processes require significant costs and space. Recently, the motor control unit (MCU) has been required to implement RDC functions for cost reduction and functional safety. To implement the RDC function with the MCU, an excitation signal must be generated based on the pulse with modulation (PWM) signal. In this paper, with a single process core environment, the PWM frequency for motor control and the PWM frequency for generating the excitation signal are different. This study describes a demodulation method that enables accurate positioning of a rotor. The sampling time of the feedback signals is determined, and the rotor position is calculated through the second-order generalized integrator frequency locked loop technique. The rotor position information calculated from the proposed RDC-less system provides the same level of accuracy as that of a system with an RDC. The proposed method was verified through simulation and experiment. Moreover, this method can be applied to exclude RDCs from a single core system and process the resolver signal by the existing MCU.https://ieeexplore.ieee.org/document/10288453/Inverterpermanent magnet synchronous motorresolver decode convertersecond-order generalized integrator frequency locked loop |
| spellingShingle | Jun-Ik Uhm Sung-Jun Park Je-Suk Park Hee-Sun Lim Geun-Ho Lee An Advanced RDC-Less System Independent of Motor Control PWM Frequency IEEE Access Inverter permanent magnet synchronous motor resolver decode converter second-order generalized integrator frequency locked loop |
| title | An Advanced RDC-Less System Independent of Motor Control PWM Frequency |
| title_full | An Advanced RDC-Less System Independent of Motor Control PWM Frequency |
| title_fullStr | An Advanced RDC-Less System Independent of Motor Control PWM Frequency |
| title_full_unstemmed | An Advanced RDC-Less System Independent of Motor Control PWM Frequency |
| title_short | An Advanced RDC-Less System Independent of Motor Control PWM Frequency |
| title_sort | advanced rdc less system independent of motor control pwm frequency |
| topic | Inverter permanent magnet synchronous motor resolver decode converter second-order generalized integrator frequency locked loop |
| url | https://ieeexplore.ieee.org/document/10288453/ |
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