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1. 发明授权

US10138857B2 Engine starter system 有权
公开(公告)号：US10138857B2
公开(公告)日：2018-11-27
申请号：US15735317
申请日：2016-06-13
申请人： MITSUBA Corporation
发明人： Daisuke Semba , Noriyuki Aramaki , Ken Noguchi , Masayuki Okubo
IPC分类号： F02N11/04 , F02N11/08 , H02K7/18 , H02K1/24
摘要： A rotor of a starter that employs an SR motor is directly connected to a crank shaft of an engine. The rotor and the crank shaft are set in such a way that when a piston is positioned at a top dead center or the like, salient poles and of the rotor face U-phase poles, so that an output torque of the starter comes to its maximum at a maximum pass-over torque position of the engine. When the engine is stopped, electricity is supplied through U-phase coils, thereby making the salient poles and the U-phase poles stop so as to face each other. In this manner, the piston is stopped at the maximum pass-over torque position. When the engine is started, electricity is supplied to W-phase coils which are adjacent to the U-phase coils, thereby making it possible to overcome a maximum friction torque with maximum outputs.

2. 发明授权

US09455616B2 Brushless motor control method and brushless motor control device and electric power steering device 有权
标题翻译：无刷电机控制方式和无刷电机控制装置及电动助力转向装置
公开(公告)号：US09455616B2
公开(公告)日：2016-09-27
申请号：US14651319
申请日：2013-12-09
申请人： MITSUBA Corporation
发明人： Masayuki Okubo , Keisuke Mitsuoka
IPC分类号： H02P21/00 , H02K29/03 , H02K1/27 , H02P6/10 , H02P27/04
CPC分类号： H02K29/03 , B62D5/046 , H02K1/2706 , H02P6/10 , H02P21/00 , H02P21/22 , H02P27/04 , H02P2207/05
摘要： A control device 50 that drives and controls a brushless motor 3 of a four-pole 24-slot configuration includes: a base current calculation section 52 that calculates fundamental-wave current indicating a winding current value associated with maximum torque control; a correction component calculation section 59 that calculates 12th-order first higher harmonic wave component B sin 12(θ+β) to cancel a torque ripple of magnet torque, and 12th-order second higher harmonic wave component A sin 12(θ+α) to cancel a torque ripple of reluctance torque, based on a phase current value detected by a current sensor 64; a correction map 58 in which relation between phase current and parameters A, B, α, and β of the both higher harmonic wave components is stored; and a current correction section 60 that corrects supply current by superimposing each 12th-order higher harmonic wave component on the fundamental-wave current in order to create current command values Id′ and Iq′.
摘要翻译：驱动和控制四极24槽配置的无刷电动机3的控制装置50包括：基极电流计算部52，计算表示与最大转矩控制相关联的绕组电流值的基波电流; 校正分量计算部分59，其计算12阶第一高次谐波分量B sin 12（θ+β）以消除磁转矩的转矩波动，以及12阶第二高次谐波分量A sin 12（θ+α）基于由电流传感器64检测的相电流值来取消磁阻转矩的转矩脉动; 校正图58，其中存储相位电流和两个高次谐波分量的参数A，B，α和β之间的关系; 以及电流校正部60，其通过将基本波电流上的每个12次高次谐波分量叠加以产生电流指令值Id'和Iq'来校正供电电流。

3. 发明授权

US09490673B2 Rotor of magnet-assisted reluctance motor and brushless motor 有权
标题翻译：磁辅助磁阻电机和无刷电机转子
公开(公告)号：US09490673B2
公开(公告)日：2016-11-08
申请号：US14421600
申请日：2013-08-10
申请人： MITSUBA Corporation
发明人： Masayuki Okubo , Keisuke Mitsuoka , Masaru Watanabe
IPC分类号： H02K1/27 , H02K29/03 , H02K21/14 , H02K1/24
CPC分类号： H02K1/2766 , H02K1/246 , H02K21/14 , H02K29/03 , H02K2213/03
摘要： A rotor includes S-pole and N-pole magnets which are arc-shaped in cross-section. Each pole has three magnets. Each magnet is embedded in the rotor in such a way that a convex side portion thereof faces center Or of the rotor. Distance Rs between center Os of circular arcs of S-pole magnets and center Or of the rotor is different from distance Rn between center On of circular arcs of N-pole magnets and center Or of the rotor (Rs≠Rn). The ratio of the two distances is 0.92 (Rs/Rn=0.92). An outer peripheral section of an innermost-layer S-pole magnet is disposed in such a way as to protrude into an adjacent pole zone N1 or N2 from a pole zone S1 or S2.
摘要翻译：转子包括横截面为弧形的S极和N极磁体。每个杆都有三个磁铁。每个磁体以其凸侧面部分面向转子的中心Or的方式嵌入转子中。 S极磁体和转子中心Or的圆弧的中心Os之间的距离Rs与N极磁体的圆弧和转子的中心Or（Rs≠Rn）的中心点之间的距离Rn不同。两个距离的比值为0.92（Rs / Rn = 0.92）。最外层S极磁体的外周部设置成从极区S1或S2突出到相邻极区N1或N2中。

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