Abstract: Provided is a control circuit capable of efficiently supplying electric power from an alternating-current generator to a load, and a power generation device having this control circuit. A control circuit 1 for controlling electric power to be supplied from a power generator 5 to a battery 6 is provided with: a rate-of-change obtaining unit 11 configured to obtain a rate of change of a sensor cycle for a sensor signal synchronous with an operation of the power generator 5; an estimation unit 12 configured to estimate a next sensor cycle using the rate of change of the sensor cycle obtained by the rate-of-change obtaining unit; and an output-supply control unit 13 configured to perform PWM control of switching elements provided for a drive circuit 30 using the next sensor cycle estimated by the estimation unit 12.

Abstract: A battery charging apparatus includes a plurality of input terminals which are connected to respective phases of a three-phase AC dynamo, and a rectifying circuit including a plurality of rectifying elements and a plurality of switching elements. A switching element control unit and pulse generation unit are provided, for controlling the turning on/off of the switching elements, and for generating a pulse signal, respectively. The switching element control unit is configured to control the plurality of switching elements, and includes a potential difference detection unit configured to detect potential differences between potentials of input terminals, and a specifying unit configured to determine a phase order of AC outputs which are input to the input terminals.

Abstract: A control circuit 1 for determining a phase sequence of a power generator includes a frequency control unit, a cycle obtaining unit, a determination unit, and an output-supply control unit. The frequency control unit controls a frequency of a sensor signal synchronous with an operation of the power generator, and the cycle obtaining unit obtains a cycle of the sensor signal whose frequency is controlled by the frequency control unit. The determination unit determines the phase sequence of the power generator by detecting timing at which an output voltage outputted from each of the phases of the power generator has risen using the cycle of the sensor signal obtained by the cycle obtaining unit. The output-supply control unit controls a drive circuit according to the phase sequence of the power generator determined by the determination unit.

Abstract: A control circuit 1 for determining a phase sequence of a power generator includes a frequency control unit, a cycle obtaining unit, a determination unit, and an output-supply control unit. The frequency control unit controls a frequency of a sensor signal synchronous with an operation of the power generator, and the cycle obtaining unit obtains a cycle of the sensor signal whose frequency is controlled by the frequency control unit. The determination unit determines the phase sequence of the power generator by detecting timing at which an output voltage outputted from each of the phases of the power generator has risen using the cycle of the sensor signal obtained by the cycle obtaining unit. The output-supply control unit controls a drive circuit according to the phase sequence of the power generator determined by the determination unit.

Abstract: Provided is a control circuit capable of efficiently supplying electric power from an alternating-current generator to a load, and a power generation device having this control circuit. A control circuit 1 for controlling electric power to be supplied from a power generator 5 to a battery 6 is provided with: a rate-of-change obtaining unit 11 configured to obtain a rate of change of a sensor cycle for a sensor signal synchronous with an operation of the power generator 5; an estimation unit 12 configured to estimate a next sensor cycle using the rate of change of the sensor cycle obtained by the rate-of-change obtaining unit; and an output-supply control unit 13 configured to perform PWM control of switching elements provided for a drive circuit 30 using the next sensor cycle estimated by the estimation unit 12.

Abstract: A battery charging apparatus includes a plurality of input terminals which are connected to respective phases of a three-phase AC dynamo, and a rectifying circuit including a plurality of rectifying elements and a plurality of switching elements. A switching element control unit and pulse generation unit are provided, for controlling the turning on/off of the switching elements, and for generating a pulse signal, respectively. The switching element control unit is configured to control the plurality of switching elements, and includes a potential difference detection unit configured to detect potential differences between potentials of input terminals, and a specifying unit configured to determine a phase order of AC outputs which are input to the input terminals.