Robust control of two parallel‐connected permanent magnet synchronous motors fed by a single inverter

Deng, Zhenhua; Nian, Xiaohong

doi:10.1049/iet-pel.2015.0560

Cited by 10 publications

(5 citation statements)

References 39 publications

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“…The state space model of the MIDPMSM system can be obtained through merging (1) and (3). The output function is defined as the speed of the two machines to achieve speed tracking control.…”

Section: Lti Model Of a Midpmsm System A State-space Model Of A mentioning

confidence: 99%

“…The controller designing problem for MIDPMSM system is much more complex than a single-PMSM system due to the non-linearity and coupling created by the coordinate transition between two machines. Some researchers [1]- [4] have proposed to use the average value of the speed, position and current of the two machines so that the nonlinearity and coupling are eliminated. On the other hand, some researchers [5]- [7] treat parallel-connected machines as two independent machines.…”

Section: Introductionmentioning

confidence: 99%

“…The average method is easy to understand but, in fact, this type of controller is an approximation to the MIDPMSM system. It has a limitation that it works only when the load torque difference between the two machines is small [1]. The estimation error of the machine state increases with the electrical angle difference between the two machines.…”

Section: Introductionmentioning

confidence: 99%

“…The coordinate transition is no longer needed. This type of control scheme can preserve the system stability even if the system is with a large torque difference, but it loses the ability to regulate some dynamic performance to the open-loop machine [1]. The open-loop machine has a risk of unstable if the machine is under damped [16].…”

Section: Introductionmentioning

confidence: 99%

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Reduced-Order Feedback Linearization for Independent Torque Control of a Dual Parallel-PMSM System

Liu

Zhu

et al. 2021

IEEE Access

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Connecting two PMSMs in parallel to a 2-level 3-leg inverter gives a way to build up a high power-density driving system using existing electronic devices. But this type of system has a nature of nonlinearity that creates an obstacle in high performance control and the original system cannot be feedbacklinearized directly. This paper presents a reduced-order feedback-linearization method. In the first place, an extra order-reducing step that separates the system as a main system and an auxiliary system is applied. Then a feedback-linearization method is applied to the reduced-order system. With these effort, the original system can be converted into a linear time-invariant system bringing the controller design problem into the linear domain. In the last step, a linear robust state-feedback controller is used to achieve the speed control as well as compensate the unmeasurable external load torque. An extensive experiment is given to verify the feasibility and good performance in a highly unbalanced load torque situation of the designed controller.

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“…The state space model of the MIDPMSM system can be obtained through merging (1) and (3). The output function is defined as the speed of the two machines to achieve speed tracking control.…”

Section: Lti Model Of a Midpmsm System A State-space Model Of A mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reduced-Order Feedback Linearization for Independent Torque Control of a Dual Parallel-PMSM System

Liu

Zhu

et al. 2021

IEEE Access

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show abstract

“…According to ( 9), (10), and ( 12), the synchronization condition of a PMSM with respect to its voltage magnitude can be described as…”

Section: A Synchronization Condition Of An Open-loop Pmsmmentioning

confidence: 99%

A MTPA Control Strategy for Mono-Inverter Multi-PMSM System

Liu

Fadel

et al. 2021

IEEE Trans. Power Electron.

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Making electrical driving systems cheaper, lighter, and more reliable is the consistent pursuit of current research and development. Mono-inverter multipermanent magnet synchronous motor systems tend to share the static converters in electromechanical systems by connecting machines in parallel. This type of system has an obvious advantage in overall weight and cost. In this article, we have proposed a new maximum torque per ampere (MTPA) control strategy for a MIMPMSM system, which supports three or more machines in parallel and works both in motor mode and brake mode. The calculation of the MTPA point minimizing the overall joule loss of the system is also given. The synchronization condition, stability, and optimal efficiency of the system are strictly proven. This new control structure is simple making current single PMSM systems easy to upgrade to support the MIMPMSM system. The experiment has demonstrated its feasibility, stability, and improvements in efficiency.

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Stability and stabilization for the coupling permanent magnet synchronous motors system with input delay

et al. 2022

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Robust control of two parallel‐connected permanent magnet synchronous motors fed by a single inverter

Cited by 10 publications

References 39 publications

Reduced-Order Feedback Linearization for Independent Torque Control of a Dual Parallel-PMSM System

Reduced-Order Feedback Linearization for Independent Torque Control of a Dual Parallel-PMSM System

A MTPA Control Strategy for Mono-Inverter Multi-PMSM System

Stability and stabilization for the coupling permanent magnet synchronous motors system with input delay

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