公开(公告)号：US20180372552A1

公开(公告)日：2018-12-27

申请号：US16015890

申请日：2018-06-22

Applicant: Nidec Control Techniques Limited

Inventor： Dilesh Arvind RAUT

IPC: G01K7/01 ,  H03K17/567

Abstract: A method performed in a circuit is provided. The circuit comprises a semiconductor switch having first, second and third terminals and being arranged such that a signal applied at the first terminal controls a current between the second and third terminals. The circuit further comprises monitoring circuitry comprising a first diode and charge determining circuitry, the third terminal of the semiconductor switch being connected to the monitoring circuitry and to supply circuitry. The method comprises determining, by the charge determining circuitry, an indication of an amount of electrical charge that has, consequent to a switching event at the semiconductor switch, flown through the first diode under reverse recovery conditions.

公开(公告)号：US20150333750A1

公开(公告)日：2015-11-19

申请号：US14713350

申请日：2015-05-15

Applicant: Control Techniques Limited

Inventor： Priyank Nareshchandra BATERIWALA ,  Dilesh Arvind RAUT ,  Rajkumar BABURAJ

IPC: H03K17/567 ,  H02J7/00

CPC classification number: H03K17/567 ,  H02J7/0081 ,  H02J7/345 ,  H02M1/36 ,  H02M2001/322 ,  Y10T307/747

Abstract: An energy bypass circuit for connection between an energy source and a capacitance has first and second relays, a switch, and a resistance. The relays are operable so as to have a first state in which the energy source is not connected to the capacitance, a second state in which the energy source is connected to the capacitance via the resistance, and a third state in which the energy source is connected to the capacitance not via the resistance. The switch is operable, when the relays are in the third state, to enable additional charge stored by the capacitance to discharge via the resistance.

Abstract translation: 用于能量源和电容之间的连接的能量旁路电路具有第一和第二继电器，开关和电阻。 继电器可操作以具有其中能量源不连接到电容的第一状态，其中能量源经由电阻连接到电容的第二状态，以及能量源是第三状态 通过电阻连接到电容。 当继电器处于第三状态时，该开关可操作，以使由电容存储的附加电荷通过电阻放电。