Abstract
The 150 ∘ mode 12-step control (150-TSC) is suitable for high-speed drives since it can generate a quasi-sinusoidal current waveform compared with the conventional 120 ∘ mode six-step control. However, for high-speed brushless direct current drives, the relatively large commutation angle of 150-TSC will cause a noticeable phase delay error. Additionally, the low switch-to-fundamental ratio will cause significant pulsewidth modulation (PWM) delay, which leads to large current oscillation and ripple. In this article, an asynchronous PWM scheme is proposed for 150-TSC to eliminate PWM delays. A phase delay error compensation method based on stator current is further proposed. The optimal phase advance angle is generated for minimum stator current magnitude with the help of the gradient descent optimization algorithm. A quasi-sinusoidal phase current can be achieved and the current harmonics can be reduced. The effectiveness of the proposed strategy is verified by experimental results.
| Original language | English |
|---|---|
| Pages (from-to) | 11936-11947 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 71 |
| Issue number | 10 |
| Early online date | 30 Jan 2024 |
| DOIs | |
| Publication status | Published - Oct 2024 |
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Keywords
- 12-step control (TSC)
- Commutation
- Delays
- Harmonic analysis
- Pulse width modulation
- Sensors
- Synchronization
- Voltage
- brushless direct current (BLDC) drive
- commutation compensation
- high-speed drive
- pulsewidth modulation (PWM) scheme
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Control and Systems Engineering