A Consequent-Pole PM Magnetic-Geared Double-Rotor Machine With Flux-Weakening Ability for Hybrid Electric Vehicle Application

Hong, Zhao; Liu, Chunhua; Song, Zaixin; Liu, Senyi

doi:10.1109/tmag.2019.2901265

Cited by 26 publications

(14 citation statements)

References 18 publications

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“…With the increase of n, the amplitude of Fn decreases. Thus, to generate a maximum steady electromagnetic torque, the pole-pair number of stator winding Ps, pole-pair number of rotor Pr and the inner modulator slot number Q must satisfy [17]:…”

Section: ( ) Cos ( )mentioning

confidence: 99%

A Dual-Modulator Magnetic-Geared Machine for Tidal-Power Generation

et al. 2020

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In this paper, a new dual-modulator magnetic-geared machine (DM-MGM) is proposed for tidal power generation with the virtue of high torque output at low speed. Firstly, the requirement of DM-MGM for tidal power generation is derived. Then, the flux modulation principle and flux-enhancing effect of the extra modulator of the proposed DM-MGM are elaborated. After that, a finite element analysis and genetic algorithm combined (FEA-GA) method is utilized to solve a multi-objective optimization problem for the DM-MGM design. The electromagnetic performances of the optimized DM-MGM with different pole-pair combinations are quantitatively compared via FEA. The results show the effectiveness of proposed machine, which is suitable to be applied in tidal power generation scenario.

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Section: ( ) Cos ( )mentioning

confidence: 99%

A Dual-Modulator Magnetic-Geared Machine for Tidal-Power Generation

et al. 2020

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“…Similar to Equations (11)- (14), the relative permeability of each region can also be expressed in a complex Fourier series form:…”

Section: Partical Differential Equation Solutionmentioning

confidence: 99%

“…The rotating speeds of two rotors are: ωi = Under this mode, the HEV is running at a medium speed, so the battery does not output power anymore and the ICE comes into use. However, to maintain the magnetic field, the stator windings are electrified with DC current [14]. The rotating speeds of two rotors are: ωi = 1200 r/min, ωo = 1015 r/min.…”

Section: Back Emf Under No-load Conditionmentioning

confidence: 99%

“…Indeed, with the introduction of another rotating component and the ability to alternate the speed ratio and torque ratio between two rotating components, MGMs have broadened the application scenarios of electric machines [11][12][13]. A good example is that MGMs can serve as the power split component (PSC) in hybrid electric vehicles (HEVs) to realize energy exchange among the internal combustion engine (ICE), wheels, and battery [14][15][16]. The ICE and electric machine can provide traction for the wheels independently.…”

Section: Introductionmentioning

confidence: 99%

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Analytical Modeling and Comparison of Two Consequent-Pole Magnetic-Geared Machines for Hybrid Electric Vehicles

et al. 2019

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The exact mathematical modeling of electric machines has always been an effective tool for scholars to understand the working principles and structure requirements of novel machine topologies. This paper provides an analytical modeling method—the harmonic modeling method (HMM)—for two types of consequent-pole magnetic-geared machines, namely the single consequent-pole magnetic-geared machine (SCP-MGM) and the dual consequent-pole magnetic-geared machine (DCP-MGM). By dividing the whole machine domain into different ring-like subdomains and solving the Maxwell equations, the magnetic field distribution and electromagnetic parameters of the two machines can be obtained, respectively. The two machines were applied in the propulsion systems of hybrid electric vehicles (HEVs). The electromagnetic performances of two machines under different operating conditions were also compared. It turns out that the DCP-MGM can reach a larger electromagnetic torque compared to that of the SCP-MGM under the same conditions. Finally, the predicted results were verified by the finite element analysis (FEA). A good agreement can be observed between HMM and FEA. Furthermore, HMM can also be applied to the mathematical modeling of other consequent-pole electric machines in further study.

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“…In the motor drive system powered by storage battery or super-capacitors used in electric vehicles, two schemes are generally adopted to increase the motor speed: flux-weakening control and increasing the DC-link voltage. Compared with the surface PMSM, the interior PMSM is more suitable for the flux-weakening speed-rising due to the reluctance torque produced by the inconsistent rotor inductance between the direct axis and quadrature axis [5,6].…”

Section: Introductionmentioning

confidence: 99%

Design for the Interior Permanent Magnet Synchronous Motor Drive System Based on the Z-Source Inverter

Dong

Zhang

et al. 2019

Energies

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The permanent magnet synchronous motor (PMSM) running above the base speed requires flux-weakening control, which is usually realized by the direct-axis demagnetization current generated by the vector control, thus leading to a decrease in the system efficiency in the flux-weakening region. In addition, the motor power output range is limited by the inverter output voltage and current level. In this paper, a Z-Source drive PMSM control system with adjustable DC-link voltage was proposed to improve the efficiency of the motor system. The proposed system was experimentally verified. The response time of DC-link voltage is 10 ms and the overshoot is 3%, indicating good dynamic characteristics. Compared with the flux-weakening scheme, the Z-Source inverter scheme can achieve higher efficiency (about 3%) when the PMSM speed was set to 650 r/min.

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A Consequent-Pole PM Magnetic-Geared Double-Rotor Machine With Flux-Weakening Ability for Hybrid Electric Vehicle Application

Cited by 26 publications

References 18 publications

A Dual-Modulator Magnetic-Geared Machine for Tidal-Power Generation

A Dual-Modulator Magnetic-Geared Machine for Tidal-Power Generation

Analytical Modeling and Comparison of Two Consequent-Pole Magnetic-Geared Machines for Hybrid Electric Vehicles

Design for the Interior Permanent Magnet Synchronous Motor Drive System Based on the Z-Source Inverter

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