The DQ axes are shown rotating with angular velocity equal to , the same angular velocity as the phase voltages and currents. The D axis makes an angle θ = ω t {\displaystyle \theta =\omega t} with the phase A winding which has been chosen as the reference.

如图1所示，交轴与N-S极磁铁垂直，即相交关系，所以叫做交轴，交轴的作用是控制力的大小；D轴也叫 直轴 ，因为直轴的英文全称是“direct-axis”，所以可以知道“D轴”的“D”源于“direct-axis”的首字母；至于为什么叫直轴？

Similar to phasors, the dq0 transformation maps sinusoidal signals to constants, and therefore results in relatively simple dynamic models. However this mapping is accu-rate, and does not rely on any approximations.

The abc-to-dq0 transformation depends on the dq frame alignment at t = 0. The position of the rotating frame is given by ω.t, where ω represents the dq frame rotation speed. When the rotating frame is aligned with the phase A axis, the following relations are obtained:

2024年8月5日 · What is the relationship between dq-axis quantities and space-vectors? The space vector represents a pair of dq -axis components ( i d , i q ) as a single complex number. Space-vectors in field-oriented control theory are normally defined with a zero zero-sequence current, and this makes it possible to 'invert' a space-vector to recover the ...

A novel procedure is developed to calculate the dq-axes inductance with saturation by finite element method considering cross magnetization. Through magnetic field computation, the influence of saturation and cross-magnetization on dq-axes inductance is further investigated.

Abstract— A d-q axis theory of a thermo-magnetic Curie moto r is presented. This theory allows to estimate the performances of Curie motor from its geometrical, magnetic and thermal properties....

2020年6月1日 · Strong rejection performances of uncertainties and dq-axes coupling terms are achieved. Measurement delay compensated LADRC eliminates the unmatched compensation of disturbances. The dead-time effect is reduced without an …

2000年9月19日 · Abstract: With brushless DC motors (BLDCs), current regulators in dq axes are very appreciated for sinusoidal supply. As the set current is constant, the regulator works properly. When the back-EMF is not sinusoidal, current oscillations appear in the dq regulator.

This paper combines prior approaches and expands upon them to form a unified electrostatic machine dq-axis framework capable of providing insight on the capacitances of interest for torque production as well as control.