公开(公告)号：US06563251B2

公开(公告)日：2003-05-13

申请号：US09785314

申请日：2001-02-20

申请人： Anders Jansson ,  Karl Håkansson ,  Stefan Johansson

发明人： Anders Jansson ,  Karl Håkansson ,  Stefan Johansson

IPC分类号： H02N206

CPC分类号： H02N2/065

摘要： In a method according to the present invention, charging and discharging of motor phases (10A, 10B) in an electromechanical motor is performed with a small voltage difference between the voltage source and the capacitive load of the motor phase (10A, 10B). This is accomplished by connecting a series of voltage sources (36), one at a time. Energy from the discharging operation is stored to be used in subsequent charging operations. In a device according to the present invention, the voltage sources (36) are preferably provided by means of capacitive or induction voltage step-up or step-down circuits. Preferably, switches (34) control the charging and discharging. In a preferred embodiment, the capacitance of one motor phase (10A) is used for storing charge resulting from the discharge from another motor phase (10B).