Panasonic Intellectual Property Management Co., Ltd.

Junichi Kanou

Akira Minegishi

Masahiro Yamaoka

Atsushi Yamamoto

Kohei Masuda

Noriaki Takeda

Tetsuyoshi Ogura

A power transmitting apparatus includes: a converter which converts an input power into an AC power with a predetermined frequency; and a first code modulator which code-modulates at least part of the AC power with a first modulation code to generate a first code-modulated power.

Power transmitting apparatus for code modulation and power receiving apparatus for code demodulation

A long-term predictor predicts long-term predicted power indicating temporal changes in consumed power of a customer using a long-term prediction model. A short-term predictor predicts short-term predicted power indicating temporal changes in the consumed power of the customer immediately after a current time, using a short-term prediction model, based on temporal changes in the consumed power of the customer immediately before the current time. A controller controls charging and discharging of a power storage apparatus at intervals based on the long-term predicted power and the short-term predicted power. The controller predicts temporal changes in charging power, discharging power, and charged electric energy of the power storage apparatus, and when the charged electric energy is predicted to reaches a lower limit due to discharging of the power storage apparatus, the controller charges power from the power network to the power storage apparatus in advance.

Power management system for customer connected to power network and having load apparatus and power storage apparatus

A reference capacity determiner determines a reference capacity of each power storage apparatus, under an assumption that power is not transmitted/received among the customer facilities. An actual capacity determiner determines an actual capacity of each power storage apparatus, under an assumption that power is transmitted/received among the customer facilities. A characteristic value determiner determines a first number of charging/discharging cycles, under an assumption that power is not transmitted/received among the customer facilities and each power storage apparatus has the reference capacity. A charging/discharging plan determiner determines a second number of charging/discharging cycles, under an assumption that power is transmitted/received among the customer facilities and each power storage apparatus has the actual capacity, and determine a charging/discharging plan of the power storage apparatuses so as to minimize an objective function indicating a degree of degradation from the first number of cycles to the second number of cycles.

Power controller apparatus for power system including customer facilities with power storage apparatuses

A long-term predictor circuit predicts a long-term predicted power indicating temporal variations in consumed power of a customer, using a long-term prediction model indicating the variations for each moment of clock times. A short-term predictor circuit predicts a short-term predicted power using a short-term prediction model indicating the variations over a time interval before and after a change in a consumed power of each load apparatus, based on the variations over a time interval immediately before a current time, the short-term predicted power indicating the variations over a time interval immediately after the current time. A controller circuit controls charging and discharging of a battery apparatus by setting a charging power or a discharging power based on the long-term predicted power, and controls discharging of the battery apparatus by setting a discharging power based on the short-term predicted power.

Electric power management system for reducing large and rapid change in power received from electricity delivery system

A power controller apparatus predicts demand power of a load apparatus, generated power of a power generator apparatus, and inherent stored energy of a battery apparatus. The power controller apparatus calculates excess electric energy and deficient electric energy achieved when the inherent stored energy reaches higher- and lower-limit stored energies, respectively. The power controller apparatus combines at least one first customer facility and at least one second customer facility having the excess electric energy and the deficient electric energy, respectively, and thus, forms at least one group including the first and second customer facilities. For each group, the power controller apparatus determines transmitting power from the first customer facility to the second customer facility, so that stored energy of each of the battery apparatuses of the first and second customer facilities is equal to or less than a first threshold, and equal to or more than a second threshold.

Power controller apparatus for power system including multiple customer facilities with battery apparatus

Each one of code modulators modulates first power to generate a code-modulated wave using a modulation code based on a code sequence, and transmits the code-modulated wave to one of code demodulators. Each one of code demodulator receives the code-modulated wave from one of the code modulators, and demodulates the received code-modulated wave to generate second power using a demodulation code based on a code sequence identical to the code sequence of the modulation code used. When power is transmitted between each one of transmitter and receiver pairs, a controller selects and assigns code sequences to the transmitter and receiver pairs, so as to reduce an average of an absolute value of a total current of the code-modulated waves of the transmitter and receiver pairs in a transmission path, as compared to a reference value, the average being averaged over a predetermined time.

Power transmission system transmitting powers from multiple power transmitter apparatuses to multiple power receiver apparatuses, and capable of distinguishing and separating transmitted powers

A power transmission system includes: a power transmitter connected to a power supply; a plurality of power receivers respectively connected to a plurality of loads; a power transmission line connecting the power transmitter and the plurality of power receivers; and a controller. The controller acquires information on optimum power for maximizing transmission efficiency in the power transmission line and information on power demands requested by the loads, and routes transmission power from the power transmitter selectively to the plurality of power receivers. The transmission power is equal to or smaller than the optimum power. When a total power demand is larger than the optimum power, the controller requests another controller to supply supplementary power. When the total power demand is smaller than the optimum power, the controller notifies the other controller that surplus power is available.

Power transmission system including power transmitter and power receiver

A system includes: a first modulator that modulates a first electric power at a first modulation frequency; a second modulator that modulates a second electric power at a second modulation frequency; a transmission line through which a transmission power obtained by combining a plurality of modulated electric powers is transmitted; a first demodulator that demodulates the transmission power at a first demodulation frequency to generate a third electric power; and a second demodulator that demodulates the transmission power at a second demodulation frequency to generate a fourth electric power. The first modulation frequency and the second modulation frequency are different from each other.

Electric power transmission system including modulators and demodulators, and controller

A converter includes: a terminal that receives code-modulated power into which first alternating-current power has been code-modulated with a modulation code; and a circuit that converts the code-modulated power with a conversion code to generate second alternating-current power. The conversion code is based on the modulation code. A frequency of the second alternating-current power is higher than a frequency of the first alternating-current power.

Conveter for converting code-modulated power with conversion code, power transmission system, and controller

A converter includes: a terminal that receives code-modulated power into which first alternating-current power has been code-modulated with a modulation code; and a circuit that converts the code-modulated power with a conversion code to generate second alternating-current power. The conversion code is based on the modulation code. A frequency of the second alternating-current power is lower than a frequency of the first alternating-current power.

Growing community of inventors

Osaka, Japan

Junichi Kanou