Chinese Journal of Ship Research, Volume. 17, Issue 5, 268(2022)
Asymmetric regular sampling SPWM method based on tangent-secant midpoint approximation applied to intermediate frequency inverter power supply
Figures & Tables(15)
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Table 1. Comparison of traditional sampling methods
View tableView in ArticleTable 1. Comparison of traditional sampling methods
方法 优点 缺点 自然采样法 精度十分高 计算量十分大，要求解超越方程，数字化实现较难 对称规则采样法 计算量小，便于数字化控制实现 精度一般 不对称规则采样法 精度高于对称规则采样法，便于数字化控制实现 计算量相对较大，采样频率是对称规则采样法的两倍
Table 2. Error of output pulse
View tableView in ArticleTable 2. Error of output pulse
开关周期数 误差/% 对称规则采样 不对称规则采样 切−割线中点逼近法 开关周期数 对称规则采样 不对称规则采样 切−割线中点逼近法 1 3.99 3.76 1.2 11 3.02 3.29 0.9 2 4.43 3.41 1.55 12 1.88 3.12 0.69 3 4.05 2.63 1.64 13 0.91 2.63 0.45 4 2.84 1.54 1.45 14 0.31 1.83 0.22 5 1.02 0.35 0.26 15 0.06 0.83 0.04 6 1.02 0.75 0.56 16 0.06 0.28 0.04 7 2.84 1.65 1.22 17 0.31 1.36 0.33 8 4.05 2.35 1.31 18 0.91 2.35 0.58 9 4.43 2.86 1.65 19 1.88 3.15 1.22 10 3.99 3.19 1.15 20 3.02 3.66 1.32
Table 3. Key parameters of inverter part of intermediate frequency
View tableView in ArticleTable 3. Key parameters of inverter part of intermediate frequency
参数 数值 备注 蓄电池电压/V 23～28 36 Ah 中频变压器 12∶115 变比 输出滤波电感/mH 0.9 输出滤波电容/uF 6.6 输出电压/V 115 线电压有效值，频率400 Hz 系统功率/W 600 额定功率 调制比 — 调制比依据输入输出变化 开关频率/Hz 8 000 载波比N=20
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Weibo LI, Peng FANG, Junfeng PAN, Chunhao HAO, Zhongtian ZHANG. Asymmetric regular sampling SPWM method based on tangent-secant midpoint approximation applied to intermediate frequency inverter power supply[J]. Chinese Journal of Ship Research, 2022, 17(5): 268
Paper Information
Category: Marine Machinery, Electrical Equipment and Automation
Received: Mar. 8, 2022
Accepted: --
Published Online: Mar. 26, 2025
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