Comparison of parallel BLDC FSPM machines with strong flux-weakening capability

Zhou, Pengfei; Wang, Yu; Deng, Zhiquan; Shaobang, Xing

doi:10.1109/icems.2014.7014065

Cited by 1 publication

(2 citation statements)

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“…The experimental asymmetric dual-three phase BLDC motor has 4 pairs of poles. The winding structure diagram is shown in Assuming that the magnetic circuit has been in the unsaturated state, ignoring the cogging and eddy current and hysteresis loss, ignoring the switch on and off time, the BLDC motor voltage balance equation is as follows [11][12][13].…”

Section: Iithe Mathematical Model Of the Asymmetric Six -mentioning

confidence: 99%

“…e e i ( 1 e ) Ie 2L (10) Where is the maximum phase current. According to the formula (8) and formula (10), the maximum and the minimum phase current are expressed as : (13) Where is the phase current fluctuation. As can be seen from the formula (2-9), when the inverter carrier frequency has the same circumference, the higher the PWM frequency is, the larger the electric time constant is and the smaller the current fluctuation rate is.…”

Section: B Analysis Of Motor Phase Current At Non-commutation Timementioning

confidence: 99%

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The peak current control of permanent magnet brushless DC machine with asymmetric dual-three phases

Bian

Li²,

Zhao³

2018

Trans. Electr. Mach. Syst.

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The asymmetric dual-three phase BLDC motor has two sets of stator windings, in which the back EMF coefficients are different. This paper takes advantage of the asymmetric dualthree phase BLDC motor's structural features and proposes a new method for the accelerated problem of the BLDC motor operating in the high speed and the constant electromagnetic power. The dual phase windings of the BLDC motor are integrated into the circuit in the starting stage. When the motor's back EMF value is equal to the terminal voltage value, switch off a set of RST three phase windings whose back EMF coefficient is bigger and make the other set of stator winding UVW with smaller back EMF coefficient continue to operate under the rated power. As the motor rotor speed continues to increase, the electromagnetic torque remains unchanged. By using the peak current control strategy, we can deduce that the phase current of the UVW threephase winding is twice the RST three-phase winding when the asymmetric dual-three phase BLDC motor operates at high speed and constant power. Index Terms-Asymmetric dual three phases, back emf coefficient, peak current control.

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Section: Iithe Mathematical Model Of the Asymmetric Six -mentioning

confidence: 99%

Section: B Analysis Of Motor Phase Current At Non-commutation Timementioning

confidence: 99%