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Adaptive DC-Link Voltage Ripple Compensation for Variable Frequency Electric Aircraft
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DOI：10.1109/JESTIE.2026.3664758.png)
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Abstract
En 中文
Transformer rectifier units (TRUs) are widely used to convert variable-frequency AC (VFAC) voltage to DC voltage in the more electric aircrafts (MEA). The DC output of TRU contains frequency-dependent voltage ripples, which significantly degrade the DC-link power quality. To solve the issue, this article proposes an adaptive DC-link voltage ripple compensation approach that accommodates 360-800 Hz VFAC operation range. The proposed control strategy can be simply implemented on the DC-DC converter that already exists in the MEA power system. Though proper design, the auxiliary voltage ripple compensation can be decoupled with the DC-DC converter basic power-flow control in the frequency domain. Finally, hardware experimental results are presented to validate the feasibility of the proposed method.
Keywords:
Resonant frequency
Voltage control
Harmonic analysis
Power harmonic filters
Aircraft
Frequency locked loops
Frequency control
Batteries
DC-DC power converters
Rectifiers
More electric aircraft (MEA)
variable frequency AC system
voltage ripple compensation
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