This paper proposes an improved vector space decomposition current control scheme for dual three-phase permanent magnet (PM) synchronous motors having two sets of windings spatially shifted by 30° electrical degrees. A proportional-integral (PI) and resonant (second) controller is developed eliminating the unbalance in αβ subplane, which effective irrespective degree unbalance, while PI plus multifrequency (second sixth) employed to eliminate fifth seventh harmonics z <sub...

The relationship between the two-individual current control and vector space decomposition (VSD) for a dual three-phase permanent magnet synchronous machine (PMSM) is investigated in this paper. It found that VSD more flexible controlling fundamental αβ subplane fifth, seventh harmonics z <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> with different proportional integral (PI) gains,...

A method for enhancing torque capability of a dual three-phase permanent magnet synchronous machine (PMSM) based on conventional drive system by injecting the fifth and seventh current harmonics without any hardware re-configuration is proposed in this paper. Compared with third harmonic injection, which commonly used to enhance machine, two isolated neutral points each set single windings do not need be reconnected middle point dc-link capacitors or an additional power switching bridge...

In the back electromotive force (EMF)-based sensorless control of interior permanent magnet synchronous motor (IPMSM), inverter nonlinearity and flux linkage spatial harmonics will possibly give rise to (6k ± 1)th in estimated EMF, especially fifth seventh harmonics. Those consequently introduce (6k)th harmonic ripples rotor position, sixth component. order solve this problem, a bilinear recursive least squares (BRLS) adaptive filter is proposed integrated into sliding-mode position observer...

A fault-tolerant hybrid current control is proposed for dual three-phase permanent magnet synchronous machines (PMSMs) with one phase open in this article. The maximum torque control, minimum copper loss and single mode are unified the method, which a combination of different percentages. When percentage ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$k$ </tex-math></inline-formula> ) varies from 0% to...

This paper proposes a current control of dual three-phase permanent magnet synchronous machine (PMSM) based on five-leg inverter. The inverter can be utilized to drive PMSM with full torque at slow speed when the conventional voltage source (VSI) has faulty leg. Usually, common leg in may have severe stress. By dedicated selection which two phases as pair share leg, its rating is approximately half other legs. Meanwhile, fully fulfill vector space decomposition for PMSM, same dynamical...

A strategy of current harmonics and unbalance suppression based on the vector space decomposition control with adaptive linear neuron (ALN) controller for dual three-phase permanent magnet synchronous machine (DTP-PMSM) drive system is proposed in this article. According to conventional theory, compensation voltages from ALN <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">dq</i> -frame xmlns:xlink="http://www.w3.org/1999/xlink">dqz</i> are...

This paper proposes a simplified instantaneous output power control to suppress the second harmonic dc-bus voltage due asymmetry in three-phase pulsewidth-modulated (PWM) converter system without any sequential component decomposers. Normally, control, positive and negative sequence voltages currents are required, they usually decomposed by notch filters or dual second-order generalized integrals that difficult tune complicated. While proposed method, positive-sequence negative-sequence...

This article proposes a flux-weakening (FW) control for dual three-phase permanent magnet synchronous machine (DTPMSM) based on vector space decomposition (VSD) control, where the output voltage in αβ subplane is employed feedback FW loop. As fundamental components are mapped to while fifth and seventh harmonics projected harmonic z <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> xmlns:xlink="http://www.w3.org/1999/xlink">2</sub>...

In this article, a novel predictive torque and stator flux control (PTSF) method is proposed for N-segment three-phase permanent magnet synchronous motor (N*3-phase PMSM), which can effectively eliminate the influence of parameter mismatch on torque. The PTSF has two loops, loop loop, both implemented with robust algorithm. First, controller robustness designed, sensitivity its parameters analyzed. dq space, one-step delay compensation then proposed, enhance against mismatch. Moreover, based...

Abstract This study proposes a generic mathematical modelling and decoupling fault‐tolerant vector control for dual three‐phase permanent magnet synchronous machine (PMSM) with one phase open based on the conventional voltage source inverters, accounting mutual coupling between two sets of windings second harmonic inductance. When PMSM has open, flux‐linkages are asymmetric there components in reference frame ( dq ‐frame). Based proposed modelling, both currents become DC values ‐frame,...

The sensorless control of interior permanent magnet synchronous motor (IPMSM) based on the conventional linear extended state observer (LESO) does not have sufficient capability to eliminate steady-state position estimation error. To solve this issue, a frequency adaptive LESO (FA-LESO) is proposed estimate back electromotive force (BEMF) accurately. gains are designed according pre-designed transfer function second-order complex-coefficient filter, whose stability guaranteed by generalized...

This paper proposes an improved method of simultaneously suppressing the second harmonic (2h) dc-bus voltage pulsation and torque ripple by a compensation unit in parallel with dc bus wind power permanent magnet synchronous generator (PMSG) system asymmetric impedance. Compared to existing methods, proposed uses fewer devices requires much lower current. These results rating, switch copper losses, smaller inductor unit. In addition, corresponding current control is simpler operate. Overall,...

The main purpose of this paper is the method study balanced current control dual-redundancy permanent magnetic brushless DC motor (BLDCM), which used in electromechanical actuator system aircraft. cause and consequence unbalanced winding under simultaneous operation station are deeply analyzed. dynamic mathematic model BLDCM built, mutual induction between every phases windings considered. realized by using crossed-compare each other current. implementation basic circuits introduced....

For electrified transportation (eTransportation) systems, multi-phase motors can provide higher performance and reliability than three-phase ones, but also bring more challenges in their optimal design control. In this article, a set of high reliable electric drive system based on dual permanent magnet synchronous motor (DTP PMSM) is developed for auxiliary systems eTransportation field. A digital collaborative develop process proposed with the support multiple software tools. Design,...

The two-individual current control loops and vector space decomposition (VSD) for a dual 3-phase PMSM are compared investigated in this paper. It is found that the VSD has more flexibility on controlling fundamental αβ sub-plane fifth, seventh harmonics z1Z2 with different PI gains, while equivalent to same gains sub-planes. also there potential instability control, which due mutual coupling between two sets of windings. That being case, paper investigates conditions under stable operation...

In this paper, the effects of harmonic current suppression for dual three-phase permanent magnet synchronous motor (DTP-PMSM) by adaptive linear neuron (ALN) controller and resonant are systematically investigated. Although ALN have been extensively employed currents in machine drive system, their effect is not comparatively studied relationship between them revealed. The study shows that transfer function least-mean-square (LMS)-based frequency domain equivalent to an ideal controller,...

In order to further improve the efficiency of permanent magnet synchronous machine (PMSM) drive, this paper has proposed a simple and effective optimization control (EOC) strategy for interior machines (IPMSMs), which is based on loss model considered compensation varying parameters, such as inductance equivalent circuit resistance. Simulation results show that method can achieve higher compared with maximum torque per ampere (MTPA) also variation parameters.

This paper proposes a method for enhancing torque capability of dual 3-phase permanent magnet synchronous machine (PMSM) drive system by injecting the fifth and seventh current harmonics without any hardware reconfiguration. In this approach, compared with third harmonic injection which is commonly used to enhance capability, two isolated neutral points do not need be connected middle point dc-link capacitors or an additional power switching bridge. Further, no sensors regulate are needed....

The torque enhancement of the dual three‐phase permanent magnet synchronous machine (DT‐PMSM) drive system by full exploitation flux‐linkage and current harmonics is comparatively studied in this study. capability DT‐PMSM previously evaluated with strategies utilisation, i.e. strategy 1 third harmonic utilisation 2 fifth seventh which can extend 18.2 9.0%, respectively. However, including third, fifth, not addressed. In study, 3 also included. Its corresponding control proposed average are...