Development and Performance Testing of a V\!\!/\!f Control for Permanent Magnet Synchronous Motor Drives With Wavelet Modulated Power Electronic Converters

• Published in: IEEE transactions on industry applications Vol. 60; no. 3; pp. 5025 - 5037
• Main Author: Saleh, S. A.
• Format: Journal Article
• Language: English
• Published: IEEE 01.05.2024
• Subjects: <named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX"> V\!\!/\!f</tex-math> </inline-formula> </named-content> control; and real-time implementation; Modulation; Permanent magnet motors; Rotors; sensorless control of PMSM drives; Synchronous motors; Testing; Three phase permanent magnet synchronous motor (PMSM) drives; Torque; Voltage control; wavelet modulation technique
• ISSN: 0093-9994; 1939-9367
• DOI: 10.1109/TIA.2024.3362917

Volt-per-hertz (<inline-formula><tex-math notation="LaTeX">V\!\!/\!f</tex-math></inline-formula>) control is one the simplest control structures developed for operating electric motor drives, including permanent magnet synchronous motor (PMSM) drives. This paper presents the development and testing of a <inline-formula><tex-math notation="LaTeX">V\!\!/\!f</tex-math></inline-formula> control for PMSM drives that utilize a <inline-formula><tex-math notation="LaTeX">3\phi</tex-math></inline-formula> wavelet modulated (WM) dc-ac power electronic converter (PEC). The wavelet modulation technique is characterized by the maximum scale (<inline-formula><tex-math notation="LaTeX">J</tex-math></inline-formula>) and scale-time interval factor (<inline-formula><tex-math notation="LaTeX">\gamma</tex-math></inline-formula>). The output voltage of a <inline-formula><tex-math notation="LaTeX">3\phi</tex-math></inline-formula> WM dc-ac PEC has its magnitude directly dependent on <inline-formula><tex-math notation="LaTeX">J</tex-math></inline-formula>, while its frequency and phase are dependent to <inline-formula><tex-math notation="LaTeX">\gamma</tex-math></inline-formula>. These two parameters of the wavelet modulation technique can be used to implement a <inline-formula><tex-math notation="LaTeX">V\!\!/\!f</tex-math></inline-formula> control for PMSM drives. The proposed <inline-formula><tex-math notation="LaTeX">V\!\!/\!f</tex-math></inline-formula> control is featured with a stabilizing loop to correct the <inline-formula><tex-math notation="LaTeX">V\!\!/\!f</tex-math></inline-formula> ratio, and improve the stability of the controlled PMSM drive. The <inline-formula><tex-math notation="LaTeX">V\!\!/\!f</tex-math></inline-formula> control for a PMSM drive fed by a wavelet modulated dc-ac PEC, is implemented for performance testing using a laboratory 10<inline-formula><tex-math notation="LaTeX">-hp</tex-math></inline-formula> PMSM drive under different operating conditions. Performance results demonstrate stable, dynamic, and accurate responses, with minor sensitivities to the load torque and/or speed changes. Furthermore, test results demonstrate the ability to enhance the efficiency using the tested control for PMSM drives.