Table 2.

The data in the adjustment process of the initial phase angle of the sinusoidal waveform in the normal steady state, where the relative errors (ε) are calculated by Eq. (8), the maximum absolute errors (e_max) are the maximum among the absolute errors between the reformulated waveform and its original one.

n	b1(°)	b2(°)	φ0C (°)	(φ0C–φ0) (°)	cxy	ε	emax
0	27	28.8	27.9	0.3	0.999986292247427	2.74153 × 10−5	0.005235964
1	27	27.9	27.45	− 0.15	0.999996573055985	6.85388 × 10−6	− 0.002617937
2	27.45	27.9	27.675	0.075	0.999999143263629	1.71347 × 10−6	0.001308983
3	27.45	27.675	27.5625	− 0.0375	0.999999785815884	4.28368 × 10−7	0.000654488
4	27.562 5	27.675	27.61875	0.01875	0.999999946453970	1.07092 × 10−7	0.000327245
5	27.562 5	27.61875	27.590625	− 0.009375	0.999999986613492	2.6773 × 10−8	− 0.000163622
6	27.590 625	27.61875	27.6046875	0.0046875	0.999999996653373	6.69325 × 10−9	− 8.18112 × 10−5
7	27.590 625	27.6046875	27.59765625	− 0.00234375	0.999999999163343	1.67331 × 10−9	− 4.09056 × 10−5
8	27.59765625	27.6046875	27.60117188	0.001171875	0.999999999790836	4.18328 × 10−10	2.04528 × 10−5
9	27.59765625	27.60117188	27.59941406	− 0.000585938	0.999999999947709	1.04582 × 10−10	− 1.02264 × 10−5