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WO/2009/082799A2 |
The present invention discloses a method capable of detecting the occurrence of impact or collision between a cylinder (2) and piston (1) driven by a linear motor of a gas compressor. Said method comprises the steps of: i) obtainment of ...
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WO/2009/077053A2 |
The invention relates to an arrangement having an oscillating motor (100), a control circuit (20) for controlling the motor (100), a sensor arrangement (5) for determining an electric characteristic of the motor (100) at a predetermined ...
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WO/2009/075271A1 |
An air compressor (1) is provided with a control section (5) which controls a motor section (4) by employing PAM control and PWM control. The control section (5) changes a voltage value, which is a condition for transition from the PWM c...
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WO/2009/075171A1 |
A flat motor improved in reliability by simplifying the position detection structure and reduced in cost. The flat motor comprises a platen having lattice-like teeth formed in the flat surface and sliders each incorporating a surface mot...
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WO/2009/075188A1 |
Provided is a motor power supply device including: a DC bus (2) to which DC current is supplied from outside; an accumulation device (3) which is connected to the DC bus (2) for accumulating DC current and performs discharge; and an inve...
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WO/2009/072272A1 |
A motor drive circuit (8) includes a 3-phase inverter circuit (8) having three upper arm side switching elements (56a to 56c) for driving an upper arm of each phase of the 3-phase motor and three lower arm side switching elements (56d to...
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WO/2009/072359A1 |
An AC motor controller comprising an inverter connected to a DC power supply to output a three-phase AC current to the AC motor, a current detector for detecting the current of the AC motor, and a voltage command/PWM signal generating se...
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WO/2009/070089A1 |
A method and system for controlling an electric AC motor having three stator windings, for example for an electric car drive system. The stator windings are connected in a star configuration during operation in a low speed region with hi...
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WO/2009/066546A1 |
It is an object to provide an alternating current motor control device configured to ensure insulation between a low voltage circuit and a high voltage circuit and to be possible for miniaturization. A motor control device set at each ar...
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WO/2009/063786A1 |
It is possible to provide a motor control device which always operates with a maximum voltage and a high efficiency even when a DC bus-bar voltage of a power conversion circuit fluctuates, and a method for controlling the motor. The moto...
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WO/2009/057605A1 |
It is possible to provide an actuator control method, an actuator control system, and an object detection system which can reduce the actuator operation energy and reduce the cost. An actuator includes a movable member which vibrates whi...
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WO/2009/057873A2 |
There are provided a linear motor for generating a linear reciprocating motion force, and a reciprocating compressor for compressing a refrigerant by employing the linear motor. The linear motor and the reciprocating compressor employing...
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WO/2009/057442A1 |
Provided is a linear motor, which uses its driving magnet commonly as a magnetic scale and can make the signal outputted by a magnetic sensor, similar to an ideal sine wave. The linear motor comprises a plurality of driving magnets (5) h...
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WO/2009/054654A2 |
The present invention discloses a reciprocating compressor which can linearly reciprocate a piston (6) inside a cylinder (4) as a linear motor (10) is driven, compress a refrigerant by sucking the refrigerant into a compression space (P)...
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WO/2009/054640A2 |
The present invention relates to a reciprocating compressor in which a piston is linearly reciprocated inside a cylinder, for sucking a refrigerant into a compression space, and compressing and discharging the refrigerant, and more parti...
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WO/2009/050804A1 |
A wheel diameter measuring instrument for measuring wheel diameters of an electric vehicle employing the velocity sensorless vector control by application of a synchronous motor. A wheel diameter measuring instrument for an electric vehi...
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WO/2009/050664A2 |
The invention relates to a method for operating an actuator (1) for manoeuvring a mobile member (52), that comprises a motor of the asynchronous or brushless type or that comprises a motor associated with a differential brake, and compri...
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WO/2009/050400A2 |
The invention relates to a method for controlling the power supply for a variable-reluctance electric machine (6) that can be powered according to a discontinuous supply control mode or a continuous supply control mode, characterised in ...
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WO/2009/047741A2 |
A commutation current generator (30, 60) for controlling independent orthogonal forces of a magnetic motor (40, 70) including a magnetic track (41, 71) and a forcer (42, 72). The commutation current generator (30, 60) receives a demanded...
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WO/2009/043279A1 |
A motor rotor position sensor and a method for measuring the position of a motor rotor, said sensor comprises: a destination disk (1) installed on the motor rotor, an inductor (2) fixed in the motor case, and a DSP connected to the induc...
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WO/2009/040884A1 |
A controller for a permanent-magnetic synchronous motor makes switching from the asynchronous pulse mode to the synchronous pulse mode when the modulation factor is not less than a first setting value or the inverter output frequency is ...
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WO/2009/040965A1 |
A controller of rotary electric machine includes means (2) for detecting a rotary electric machine current generated in a rotary electric machine (1); means (3) for outputting an estimated position θp based on the rotary electric machin...
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WO/2009/041316A1 |
Provided is a new linear motor system in which two or more moving parts are arranged for one fixed part and the cogging of the entire linear motor is reduced by the interaction between the two or more moving parts. The linear motor inclu...
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WO/2009/031371A1 |
Provided is a magnetic floating system, in which floating motor stators are made into connected usable units so that the user can select the stroke arbitrarily by changing the connection number. The magnetic floating system comprises a f...
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WO/2009/030542A2 |
The invention relates to an electrical machine and to a method for the operation thereof, particularly as a drive motor for an electrical tool or as starter generator for a motor vehicle. The electrical machine comprises a rotor (18) exc...
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WO/2009/026690A2 |
A variable speed multi-stage reluctance motor or generator consisting of a number of spaced apart stator and rotor stages along a common shaft with an axis of rotation. Each stage of the rotor and stator pair has an equal number of stato...
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WO/2009/019953A1 |
A motor control device and a gain adjustment method thereof which can adjust a gain while updating the gain value of a control part by detecting the occurrence of oscillation of a feedback loop. The motor control device has a motor (1), ...
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WO/2009/019344A2 |
The electrical supply device according to the invention comprises a set of armature coils which are assembled in a polygonal coupling mode. According to the invention, these coils are connected to a single bridge rectifier comprising a s...
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WO/2009/015826A1 |
Disclosed is a method for controlling an induction motor comprising at least two windings. In said method, a first winding and at least one second winding are interconnected by means of at least two electronic switches so as to change th...
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WO/2009/013131A1 |
A linear compressor having at least one electromagnet (7), at least one oscillating body (2) movably guided in an oscillating fashion in an alternating field of the electromagnet (7), at least one piston (2) that is connected to the osci...
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WO/2009/013693A1 |
The invention relates to a dual-phase power supply device (SD1; SD2) for supplying from an alternating single-phase mains a motor (MOT2) including a first winding (W1) and a second winding (W2) in series between a neutral conductor (AC-H...
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WO/2009/013835A1 |
Sixth-order harmonic noise generated due to a torque ripple component corresponding to a sixth-order frequency of an inverter frequency is reduced in a power converter for use of an electric vehicle. Where three pulses included in a 1/2 ...
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WO/2009/004944A1 |
A novel control device for easily controlling a synchronous motor while obviating the need for any position detector. The synchronous motor control device uses a d-q coordinate system in which the direction of the magnetic flux produced ...
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WO/2009/004969A1 |
Intended is to control, when a malfunction occurs in one phase of a three-phase brushless motor, the magnitudes and directions of the drive currents of the remaining two phases, thereby to continue the rotational drive. Provided is an el...
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WO/2009/001738A1 |
A ripple detection unit (310) detects a ripple current width (Irp) of a motor current controlled according to PWM control. A ripple reference setting unit (320) sets a reference value (Irp#) of the ripple current width. A frequency adjus...
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WO/2009/001468A1 |
A power converter which drives a permanent-magnetic synchronous motor mounted on an electric railcar, wherein expanded damage of a power converter or a permanent-magnetic synchronous motor is restrained. A switch MMK is connected between...
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WO/2009/001686A1 |
Provided is a pseudo current type 120-degree conduction inverter for driving a motor at a high speed. The pseudo current type 120-degree conduction inverter is enabled to suppress the terminal voltage saturation at a weak field control o...
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WO/2008/156194A1 |
An overmodulation PWM controller includes: a voltage instruction calculation unit which calculates a d-axis voltage instruction and a q-axis voltage instruction in which a voltage amplitude exceeds a peak value of a triangular wave carri...
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WO/2008/152236A2 |
The invention relates to a reciprocating actuator comprising at least one element moving reciprocally relative to a rack, a device for driving the moving element in a driving direction, means of returning the moving element in an opposit...
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WO/2008/152906A1 |
An electric compressor control device includes: an inverter for electric compressor motor; a communication microcontroller arranged at a low-voltage region for transmission of an instruction signal via a high-speed communication bus; and...
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WO/2008/129904A1 |
A controller for an axial gap-type motor (3) comprises a rotor (11) having a permanent magnet and a first stator (12a) and a second stator (12b) opposed to each other with the rotor (11) interposed therebetween in the axial direction of ...
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WO/2008/123400A1 |
It is possible to minimize the number detection means to be arranged so as to suppress a cost and increase the number of magnetic pole judging points so as to improve magnetic pole detection accuracy, thereby accurately operating a linea...
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WO/2008/120540A1 |
A control mode switching judgment is executed as a part of main loop (control period (Tm)) for integrating AC motor control entirely. Control period (Tc) in rectangular wave voltage control mode is shorter than the execution period (Tm) ...
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WO/2008/120580A1 |
Provided are a motor control device capable of confirming a magnetic position estimation precision accurately, and a magnetic pole position estimation precision confirming method. The motor control device comprises a speed control unit (...
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WO/2008/116995A2 |
The invention relates to a method for operating a variable reluctance motor (1), operating at low speed, characterised in that, for a set torque and a given motor speed, the peak current value (Ilim) in the or each phase thereof is minim...
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WO/2008/108292A1 |
A motor controller which can perform torque ripple correction with high precision, and a motor and a torque ripple correction method. The motor controller comprises a section (51) for creating an electric angle from a position signal, a ...
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WO/2008/099953A1 |
A power target value decision unit (200) decides load power target values Pc1* and Pc2* so that a total load power target value ΣPc* of the load power target values Pc1* and Pc2* does not exceed a total charge-enabled power value ΣWin ...
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WO/2008/099885A1 |
It is possible to surely prevent generation of an inrush current when contact is turned ON in a transient state even if boosting means is provided, as follows. Among two voltage type inverters of an AC coupled bidirectional DC-DC convert...
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WO/2008/096090A1 |
The invention relates to a device for controlling the speed and the rotation direction of an asynchronous motor (1), comprising a first circuit (7) with two bi-directional switches (T'4, T'5) individually controlled and having first cond...
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WO/2008/096479A1 |
Provided are a linear motor which has reduced sizes, improved thrust and positioning accuracy and is not affected by electromagnetic noise, a linear motor type gripper using such linear motor, and an actuator using such linear motor. The...
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