An electric motor may comprise a rotor and a stator. One or more first cables connected to a first power converter circuit of are wrapped adjacent to at least some stator teeth of a stator core to form at least a first portion of one or more coil windings. One or more second cables connected to a second power converter circuit of the plurality of power converter circuit also may be wrapped adjacent to at least some of the stator teeth to form at least a second portion of the one or more coil windings.

A permanent magnet motor and a compressor are provided. The motor has a rotor, a stator core, and a stator winding. A plurality of coupled coils are disposed on the stator core. The coil includes a first type coil and a second type coil. The stator winding is a three-phase stator winding. Each phase of the stator winding is provided with three joints In each phase, a first joint and a second joint are disposed on the first type coil, a third joint in the stator winding of each phase is disposed on the second type coil. The permanent magnet motor provided by the present disclosure can improve the efficiency of the motor and reduce noise.

A permanent magnet motor and a compressor are provided. The motor has a rotor, a stator core, and a stator winding. A plurality of coupled coils are disposed on the stator core. The coil includes a first type coil and a second type coil. The stator winding is a three-phase stator winding. Each phase of the stator winding is provided with three joints In each phase, a first joint and a second joint are disposed on the first type coil, a third joint in the stator winding of each phase is disposed on the second type coil. The permanent magnet motor provided by the present disclosure can improve the efficiency of the motor and reduce noise.

A haptic engine includes a linear resonant actuator having a double-wound driving coil which is used for sensing a back electromotive force (EMF) voltage independently of the coil resistance, thus minimizing the back EMF voltage's sensitivity to temperature.

A haptic engine includes a linear resonant actuator having a double-wound driving coil which is used for sensing a back electromotive force (EMF) voltage independently of the coil resistance, thus minimizing the back EMF voltage's sensitivity to temperature.

An electric motor system (100), comprising: a motor unit (110) comprising: a first part (120); a second part (130) movable relative to the first part (120); a plurality of spaced activatable motor elements (140) provided on the first part (120), each activatable motor element (140) being operative when activated by application of an electric current thereto for creating relative movement between the first and second parts (120, 130); and a plurality of power electronics drive modules (150), each power electronics drive module (150) being operatively associated with a different subset of the plurality of activatable motor elements (140) and comprising a power converter (155) operative to convert direct current into a periodic current for powering the activatable motor elements (140); and a power supply arrangement (170) comprising: at least one direct current power source (180); and a plurality of n parallel direct current power supply lines (190), each of the parallel direct current power supply lines (190) being operative to transmit direct current from NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, WS, ZA, ZM, ZW.

An electric motor system (100), comprising: a motor unit (110) comprising: a first part (120); a second part (130) movable relative to the first part (120); a plurality of spaced activatable motor elements (140) provided on the first part (120), each activatable motor element (140) being operative when activated by application of an electric current thereto for creating relative movement between the first and second parts (120, 130); and a plurality of power electronics drive modules (150), each power electronics drive module (150) being operatively associated with a different subset of the plurality of activatable motor elements (140) and comprising a power converter (155) operative to convert direct current into a periodic current for powering the activatable motor elements (140); and a power supply arrangement (170) comprising: at least one direct current power source (180); and a plurality of n parallel direct current power supply lines (190), each of the parallel direct current power supply lines (190) being operative to transmit direct current from NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, WS, ZA, ZM, ZW.

A power inverter topology for converting a DC input to one or more phases of AC output, and methods for operating the same. The power inverter includes a switching circuit, an input circuit and a freewheeling diode bridge arrangement. The switching circuit comprises switch arms extending between the upper and lower branches of the switching circuit. The input circuit includes upper and lower isolating switches that can be selectively operated to respectively isolate the upper and/or lower branches of the switching circuit.

An electronic control device is provided with a plurality of calculation blocks that calculate floating-point data. The electronic control device includes a storage that stores calculation data items of the plurality of calculation blocks. The electronic control device calculates a command value of a control amount in a control target based on the calculation data items of the plurality of calculation blocks.

A motor-driving apparatus for driving a motor having a plurality of windings respectively corresponding to a plurality of phases is provided. The motor-driving apparatus includes a first inverter having a plurality of first switching devices and connected to first ends of the plurality of windings and a second inverter having a plurality of second switching devices and connected to second ends of the plurality of windings. A third switching device is configured to selectively connect and disconnect points at which a number of turns of each of the windings is divided in a preset ratio. A controller is configured to adjust an on/off state of the first to third switching devices based on required output of the motor.