# US 10,480,475 B2 · Starting power generation apparatus and starting power generation method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,480,475 B2 - Document ID: US10480475B2 - Status: Granted - Kind: B2 - Application number: 15/766,431 - Filed: 2016-10-04 - Published: 2019-03-21 - Granted: 2019-11-19 - Earliest claimed: 2016-10-04 - Assignees: Shindengen Electric Manufacturing Co., Ltd. - Applicants: Shindengen Electric Manufacturing Co., Ltd. - Inventors: Tatsuya Arai - Web page: https://patentgrep.com/patent/US10480475B2 ## CPC - F02N 11/04: the motors being associated with current generators - F02N 11/08: Circuits specially adapted for starting of engines - F02N 11/087: {Details of the switching means in starting circuits, e.g. relays or electronic switches} - H02K 3/28: Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) - H02K 21/22: with magnets rotating around the armatures, e.g. flywheel magnetos - H02P 1/46: for starting an individual synchronous motor {(H02P27/04 takes precedence)} - H02P 6/182: using back-emf in windings - H02P 6/187: {using the star point voltage} - H02P 6/20: Arrangements for starting (H02P6/08 takes precedence) - H02P 6/28: Arrangements for controlling current (H02P6/10 takes precedence) - H02P 9/009: {Circuit arrangements for detecting rotor position} - H02P 9/04: Control effected upon non-electric prime mover and dependent upon electric output value of the generator - F02N 2011/0874: {characterised by said switch being an electronic switch} - F02N 2200/046: Energy or power necessary for starting - H02K 29/03: with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems - Y02T 10/48 - F02N: STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A starting power generation apparatus according to an embodiment of the present invention includes: a starter generator including a field portion having a permanent magnet, and an armature unit including a first multi-phase winding and a second multi-phase winding which are arranged in parallel; a first power conversion unit including a first positive-side DC terminal connected to a battery and a plurality of first AC terminals connected to the first multi-phase winding, the first power conversion unit being configured to convert a power bidirectionally between DC and AC; a second power conversion unit including a plurality of second AC terminals connected to the second multi-phase winding, the second power conversion unit being configured to control a current to be input and output via the second AC terminals; and a control unit configured to detect a positional relationship between the field portion and the armature unit based on an output voltage of the second multi-phase winding, and control the first power conversion unit and the second power conversion unit in accordance with the positional relationship detected. The control unit is configured to detect the positional relationship when the starter generator is stopped, based on time widths of two or more predetermined voltages generated in two or more windings constituting the second multi-phase winding in a case that an output voltage of the battery is applied to the first multi-phase winding for a predetermined time in a state where current input and output via the second AC terminals is off. ## Claims ### Claim 1 A starting power generation apparatus comprising: a starter generator including a field portion having a permanent magnet, and an armature unit including a first multi-phase winding and a second multi-phase winding which are arranged in parallel; a first power conversion unit including a first positive-side DC terminal connected to a battery and a plurality of first AC terminals connected to the first multi-phase winding, the first power conversion unit being configured to convert a power bidirectionally between DC and AC; a second power conversion unit including a plurality of second AC terminals connected to the second multi-phase winding, the second power conversion unit being configured to control a current to be input and output via the second AC terminals; and a control unit configured to detect a positional relationship between the field portion and the armature unit based on an output voltage of the second multi-phase winding, and control the first power conversion unit and the second power conversion unit in accordance with the positional relationship detected, wherein the control unit is configured to detect the positional relationship when the starter generator is stopped, based on time widths of two or more predetermined voltages generated in two or more windings constituting the second multi-phase winding in a case that an output voltage of the battery is applied to the first multi-phase winding for a predetermined time in a state where current input and output via the second AC terminals is off. ### Claim 2 (depends on 1) The starting power generation apparatus according to claim 1, wherein the control unit is configured to compare the time widths of the two or more predetermined voltages and a plurality of determination values having different voltage dependencies, thereby detecting the positional relationship when the starter generator is stopped. ### Claim 3 (depends on 1) The starting power generation apparatus according to claim 1, wherein the control unit is configured to compare the time widths of the two or more predetermined voltages, a difference value between the time widths of the two or more predetermined voltages, and a plurality of determination values having different voltage dependencies, thereby detecting the positional relationship when the starter generator is stopped. ### Claim 4 (depends on 1) The starting power generation apparatus according to claim 1, wherein the control unit is configured to detect the positional relationship for each of regions predetermined, and each of the regions is set so that a phase difference between a magnetic flux vector formed by the field portion on a boundary of each region and a current vector flowing in the multi-phase winding can be 120°. ### Claim 5 (depends on 1) The starting power generation apparatus according to claim 1, wherein the control unit is configured to determine a plurality of regions crossing over switching positions of energization patterns to the armature unit at start of rotation of the starter generator, thereby detecting the positional relationship when the starter generator is stopped. ### Claim 6 (depends on 1) The starting power generation apparatus according to claim 1, wherein the predetermined voltage is a voltage at which voltages generated in the two or more windings exceed a predetermined threshold value, and the threshold value is set based on the output voltage of the battery. ### Claim 7 A starting power generation method using: a starter generator including a field portion having a permanent magnet, and an armature unit including a first multi-phase winding and a second multi-phase winding which are arranged in parallel; a first power conversion unit including a first positive-side DC terminal connected to a battery and a plurality of first AC terminals connected to the first multi-phase winding, the first power conversion unit being configured to convert a power bidirectionally between DC and AC; a second power conversion unit including a plurality of second AC terminals connected to the second multi-phase winding, the second power conversion unit being configured to control a current to be input and output via the second AC terminals; and a control unit configured to detect a positional relationship between the field portion and the armature unit based on an output voltage of the second multi-phase winding, and control the first power conversion unit and the second power conversion unit in accordance with the positional relationship detected, the starting power generation method comprising: detecting, by the control unit, the positional relationship when the starter generator is stopped, based on time widths of two or more predetermined voltages generated in two or more windings constituting the second multi-phase winding in a case that an output voltage of the battery is applied to the first multi-phase winding for a predetermined time in a state where current input and output via the second AC terminals is off.