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| Number | Title | Issue Date |
| 8013553 | Rotary electric system with neutral-point powering system In a rotary electric system, a controller works to turn high-side and low-side switching elements of first and second multiphase inverters on and off to thereby cause: the first multiphase inverter to intermittently supply a first ... | 09/06/2011 |
| 7808195 | Control apparatus for electric train To propose a control apparatus for an electric train, in which the regenerative energy of a DC power feed circuit can be consumed without disposing the brake chopper or electric-double-layer capacitor of the DC power feed circuit. A control apparatus for an e... | 10/05/2010 |
| 7439704 | Inverter device and inverter module An object is to provide an inverter device capable of detecting the welding of a switching device in early stages, and in summary, the inverter device is equipped with a parallel circuit of a charging circuit and a switch connected between a battery and an inverter ... | 10/21/2008 |
| 7427844 | Switch assembly, electric machine having the switch assembly, and method of controlling the same A pump assembly for pumping a liquid and a method of controlling the pump assembly. The pump assembly includes a motor coupled to a pump, and an electronic switch assembly electrically connected to the motor to control the current through the motor. The electronic s... | 09/23/2008 |
| 7372222 | Control device for motor-driven 4WD vehicle and related control method A control device for a motor-driven 4WD (four-wheel-drive) vehicle includes a 42v alternator (motor-generator) driven by an engine to generate three-phase AC power with 42 volts, a step-up and step-down inverter rectifying and stepping down three-phase AC power, gen... | 05/13/2008 |
| 7362001 | Generator-motor A generator-motor includes a control circuit. The control circuit is provided on an end surface of a motor. The control circuit includes a Zener diode, a capacitor, a U-phase arm, a V-phase arm, and a W-phase arm. The Zener diode, the capacitor, the U-phase arm, the... | 04/22/2008 |
| 7315143 | Operating system utilizing a selectively concealed multi-function wall station transmitter with an auto-close function for a motorized barrier operator An operating system which utilizes a multi-functional wall station for a motorized barrier includes an operator for controlling movement of a barrier between various positions. The operator may receive signals from a wireless or wired wall station transmitter, a wir... | 01/01/2008 |
| 7285927 | Control apparatus for electric motor of inverter system and control apparatus for electro mechanical brake A relay switch for selectively connecting a power supply line of an inverter to a ground line is inserted between the inverter and a power source, and a power consumption unit such as a resistor element is inserted between the relay switch and ground line. ... | 10/23/2007 |
| 7274179 | Inrush current preventing circuit There is provided an inrush current preventing circuit. The circuit comprises an voltage-controlled type switching device that has an input terminal, an output terminal and a control terminal that limits current between the input terminal and the output terminal by ... | 09/25/2007 |
| 7233123 | Electrical machine rotor position identification A method of and system for identifying the position of magnetic poles of a rotor of a multi-phase electrical machine relative to a stator of that machine is disclosed. The method includes the steps of applying a voltage pulse to stator windings of each phase, sensin... | 06/19/2007 |
| 7230395 | Voltage converting circuit for electric vehicles A voltage converting circuit for electric vehicles that is capable of stably performing precharge control from a high voltage battery to an inverter. The voltage converting circuit includes a high voltage battery for supplying electric power to a vehicle drive motor... | 06/12/2007 |
| 7215090 | Control apparatus for electric motor of inverter system and control apparatus for electro mechanical brake A relay switch for selectively connecting a power supply line of an inverter to a ground line is inserted between the inverter and a power source, and a power consumption unit such as a resistor element is inserted between the relay switch and ground line. ... | 05/08/2007 |
| 7202622 | Method for controlling an electric motor to reduce EMI A method for reducing EMI emissions in the control of an electric motor supplied by a switching inverter fed by a DC bus comprising controlling a phase advance of a conduction angle period during which a phase of the motor is fed power by the inverter to control the... | 04/10/2007 |
| 7200014 | System and method for transferring duty cycle information in an isolated DC/DC converter or other circuit A signal processing methodology and circuit for supplying bias power and duty cycle information across an isolation barrier, wherein, at an input side of the isolation barrier at least one input signal carrying input duty cycle information, together with DC bias pow... | 04/03/2007 |
| 7173516 | Operating system for a motorized barrier operator An operating system which utilizes a multi-functional wall station for a motorized barrier includes an operator for controlling movement of a barrier between various positions. The operator may receive signals from a wireless or wired wall station transmitter, a wir... | 02/06/2007 |
| 7164253 | Motor drive control apparatus On end of a reactor (L1) is connected to a positive electrode of a battery (B1) and the other end is connected to a power line via a transistor (Q1) and to the ground via a transistor (Q2). By PWM control of the transistors (Q1, Q | 01/16/2007 |
| 7157869 | Control system and control method for motor powered four wheel drive vehicle A control system for controlling a vehicle which has an engine for driving front wheels thereof and a motor for driving rear wheels thereof. The control system includes: a motor generator which is driven by the engine and generates three-phase alternating-current po... | 01/02/2007 |
| 7148798 | Gate closing timer for security gate override system A solid state programmable timer attaches with two wires across the two contacts for the key circuit of the PC board controlling a security gate and two wires to the emergency personnel remote key switch. A timed cycle is activated by an emergency personnel key open... | 12/12/2006 |
| 7132808 | Solid state series motor control A solid state series motor control includes first and second FORWARD DRIVE elements, first and second REVERSE DRIVE elements, first and second diodes, a current sensor, and a capacitance. The series motor control is conf... | 11/07/2006 |
| 7126304 | Motor controller and electric power steering apparatus A microcomputer includes a rotation angular velocity computation section, a feedback gain determination section, and a dead time compensation amount determination section. The rotation angular velocity determination section computes the rotation angular velocity of ... | 10/24/2006 |
| 7122982 | DC motor rotation information detecting device A rotation information detection device detects rotation information of a DC motor based on a surge component waveform superimposed on a voltage waveform between the terminals of the DC motor or a current waveform of the DC motor, a circuit is provided which supplie... | 10/17/2006 |
| 7122991 | Power conversion and vehicle A power conversion system for converting a dc voltage to a pulsed ac voltage includes a dc voltage source providing three or more electric potentials, and a switching circuit arranged to connect one of the potentials selectively to an output terminal. A controller p... | 10/17/2006 |
| 7119504 | Protective circuit for reducing electrical disturbances during operation of a DC motor A protective circuit, for reducing electrical disturbances or interference during operation of a DC motor, features a series transistor (62) arranged in a supply lead from a DC voltage source (12) to a DC motor; an auxiliary voltage source (52),... | 10/10/2006 |
| 7109605 | Electric load apparatus, method for processing abnormality, and computer readable recording medium recording program for causing computer to execute processing of abnormality in electric load apparatus Control apparatus (30) forcefully stops inverter (14) and inverter (31) when DC/DC converter (12) is anomalously stopped. Additionally, when one of inverters (14, 31) is anomalously stopped while DC/DC converter (12) is norm... | 09/19/2006 |
| 7111179 | Method and apparatus for optimizing performance and battery life of electronic devices based on system and application parameters An electronic device (e.g., computer system, etc.) employing dynamic power management of the present invention adjusts power consumption in accordance with an analysis of parameters and events occurring over one or more time-periods. Preferably, the electronic devic... | 09/19/2006 |
| 7102304 | Control device for a reversible rotating electrical machine The invention relates to a control device for a reversible, multi-phased rotating electrical machine which can operate in alternator or motor mode. The inventive device comprises a main battery (4), an electric network (5) and a unit (3) for con... | 09/05/2006 |
| 7098624 | Method and system for detecting the disconnection of an auxiliary power supply from a poly-phase motor To a neutral point of a motor is connected a positive electrode of an auxiliary battery and an auxiliary load. Voltage on a power supply line to the auxiliary load, a neutral point voltage, is detected, and disconnection of the auxiliary battery is determined when a... | 08/29/2006 |
| 7013868 | Accelerator signal offset system A disclosed accelerator pedal offset system includes a first connector that can be coupled to an accelerator pedal of a motor vehicle and a second connector that can be coupled, in place of the accelerator pedal, to an engine control module of the vehicle. The secon... | 03/21/2006 |
| 7005822 | Torque ripple reduction for a voltage mode motor controller A system and method for reducing torque ripple in a motor controller includes a step (60) of measuring an output voltage at each phase of the motor controller. A next step (61) includes determining a voltage mismatch between the phases. A next step ( | 02/28/2006 |
| 6978213 | Voltage conversion system and method and recording medium A battery voltage is increased in a converter and is input to an inverter that supplies a motor with a motor drive current. A control unit detects input and output voltages of the converter from outputs of voltage sensors and controls the switching in the converter ... | 12/20/2005 |
| 6930460 | Load driver with power storage unit In a load driving arrangement, electric power is supplied from an auxiliary battery to a main power supply when the power stored by charging in the main power supply is scarce at the startup of the system. The power is supplied to the main power supply by closing re... | 08/16/2005 |
| 6819071 | Automatic garage door closing system An automatic garage door closing system to be used in combination with a garage door opener. The automatic garage door closing system includes a control box, a power source and a door sensor switch. The control box includes a timer. The timer has a first predetermin... | 11/16/2004 |
| 6806671 | Power supply system and power supply method Power from a high voltage battery (10) (for example 36V) is supplied through an inverter (12) to a motor generator (14). A low voltage battery (20) (for example 12V) is connected through a reactor (18) to the neutral point of the m... | 10/19/2004 |
| 6798162 | 12/42 volt DC brush motor control system A system 10 provides a variable output voltage to a DC brush motor. The system includes a DC brush motor 14, a DC voltage source 12, a step-up, step-down DC/DC converter 16 including a switch 18. The DC/DC converter is constructed ... | 09/28/2004 |
| 6765359 | Controlling device for AC/DC driven motor A motor controlling device for an AC/DC driven motor is used for an AC and DC motor. The motor controlling device comprises an AC/DC converting unit, a voltage stabilizing unit, a phase detecting/controlling unit, and a high voltage driving unit. The AC/DC convertin... | 07/20/2004 |
| 6762578 | Motor controller for a motor with feedback potentiometer The invention concerns a motor controller for a motor with a feedback potentiometer, preferably for central air valve actuation. In the field of climate control, for example for utility vehicles and motor vehicles, the air ducts in heating, air conditioning and/or v... | 07/13/2004 |
| 6657408 | Air conditioner In an air conditioner having a control unit receiving a power from a switching power supply, a supplied voltage for the control unit is reduced to a possible lowest voltage for the unit to operate. This arrangement provides the air conditioner with less e... | 12/02/2003 |
| 6624604 | Wiper controller with fault detector device A wiper control device in which an abnormal condition of a FET is detected by distinguishing an action of an overheat-cutting protective function normally difficult to be detected with measuring the drain voltage of the FET and by which the control of the... | 09/23/2003 |
| 6548977 | Motor tracking control system An electronic circuit and software control methodology tracks motor position in a motor drive system. High power consumption position transducers, such as inductive sensors or optical encoders, can be controlled in a variable active duty cycle mode to red... | 04/15/2003 |
| 6448732 | Dual mode portable suction cleaner A vacuum cleaner operates via power supplied from either an on-board battery or an AC power outlet. When the vacuum cleaner is operating by using the battery a controller monitors the voltage level in the battery and automatically shuts down the vacuum cl... | 09/10/2002 |
