Motor apparatus comprising at least twelve coils

Patent metadata

Field	Value
Publication number	US-10103673-B2
Application number	US-201515541605-A
Country	US
Kind code	B2
Filing date	Dec 15, 2015
Priority date	Jan 9, 2015
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

The invention is based on a motor apparatus, in particular on an EC motor apparatus, comprising at least one stator (12a; 12b; 12c) which has at least twelve coils (14a, 14a′, 16a, 16a′, 18a, 18a′, 20a, 20d, 22a, 22b′, 24a, 24a′; 14b, 14b′, 16b, 6b′, 18b, 18b′, 20b, 20b′, 22b, 22b′, 24b, 24b′; 14c, 16c, 18c, 20c, 22c, 24c, 142c, 44c, 146c, 148c, 150c, 152c), and comprising at least one power supply unit (26a; 26b; 26c). It is proposed that coils (14a, 14a′, 16a, 16a′, 18a, 18a′, 20a, 20a′, 22a, 22a′, 24a, 24a′; 14b, 4b′, 16b, 16b′, 18b, 18b′, 20b, 20b′, 22b, 22b′, 24b, 24b′; 14c, 16c, 18c, 20c, 22c, 24c, 42c, 144c, 146c, 148c, 150c, 152c), which directly follow one another in the circumferential direction (36a; 36b; 36c), of the at least one stator (12a; 12b; 12c) are connected to differing phases of the power supply unit (26a; 26b; 26c) in at least one operating state.

First claim

The invention claimed is:

1. A motor apparatus, comprising at least one stator ( 12 a ; 12 b ; 12 c ) which has at least twelve coils ( 14 a , 14 a ′, 16 a , 16 a ′, 18 a , 18 a ′, 20 a , 20 a ′, 22 a , 22 a ′, 24 a , 24 a ′; 14 b , 14 b ′, 16 b , 16 b ′, 18 b , 18 b ′, 20 b , 20 b ′, 22 b , 22 b ′, 24 b , 24 b ′; 14 c , 16 c , 18 c , 20 c , 22 c , 24 c , 142 c , 144 c , 146 c , 148 c , 150 c , 152 c ), and comprising at least one power supply unit ( 26 a ; 26 b ; 26 c ), characterized in that the at least twelve coils ( 14 a , 14 a ′, 16 a , 16 a ′, 18 a , 18 a ′, 20 a , 20 a ′, 22 a , 22 a ′, 24 a , 24 a ′; 14 b , 14 b ′, 16 b , 16 b ′, 18 b , 18 b ′, 20 b , 20 b ′, 22 b , 22 b ′, 24 b , 24 b ′; 14 c , 16 c , 18 c , 20 c , 22 c , 24 c , 142 c , 144 c , 146 c , 148 c , 150 c , 152 c ) of the at least one stator ( 12 a ; 12 b ; 12 c ), which directly follow one another in the circumferential direction ( 36 a ; 36 b ; 36 c ), are connected in at least one operating state to different phases of the power supply unit ( 26 a ; 26 b ; 26 c ), and wherein opposing coils ( 14 a , 14 a ′, 16 a , 16 a ′, 18 a , 18 a ′, 20 a , 20 a ′, 22 a , 22 a ′, 24 a , 24 a ′; 14 b , 14 b ′, 16 b , 16 b ′, 18 b , 18 b ′, 20 b , 20 b ′, 22 b , 22 b ′, 24 b , 24 b ′) of the at least one stator ( 12 a ; 12 b ) are connected in parallel in each case.

2. The motor apparatus as claimed in claim 1 , characterized in that the at least one power supply unit ( 26 a ; 26 b ) comprises at least one first inverter ( 28 a ; 30 b ) which energizes a first coil ( 14 a ; 14 b ) and a second coil ( 14 a ′; 14 b ′) of the stator ( 12 a ; 12 b ), and comprises at least one second inverter ( 32 a ; 34 b ) which energizes one further coil ( 16 a , 16 a ′; 16 b , 16 b ′) of the stator ( 12 a ; 12 b ), which is disposed between the first coil ( 14 a ; 14 b ) and the second coil ( 14 a ′; 14 b ′) in the circumferential direction ( 36 a ; 36 b ).

3. The motor apparatus as claimed in claim 2 , characterized in that the at least one power supply unit ( 26 a ; 26 b ) comprises at least one first inverter assembly ( 38 a ; 40 b ) which includes the first inverter ( 28 a ; 30 b ), and comprises at least one second inverter assembly ( 42 a ; 44 b ) which includes the second inverter ( 32 a ; 34 b ).

4. The motor apparatus as claimed in claim 3 , characterized in that the second inverter assembly ( 42 a ; 44 b ) of the at least one power supply unit ( 26 a ; 26 b ) is designed out-of-phase with respect to the first inverter assembly ( 38 a ; 40 b ) of the at least one power supply unit ( 26 a ; 26 b ).

5. The motor apparatus as claimed at least in claim 3 , characterized in that at least one of the at least two inverter assemblies ( 38 a , 42 a ) is designed as a three-fold half bridge.

6. The motor apparatus as claimed at least in claim 3 , characterized in that at least one of the at least two inverter assemblies ( 40 b , 44 b , 46 b , 48 b , 50 b , 52 b ) is designed as a four-quadrant regulator.

7. The motor apparatus as claimed in claim 1 , characterized in that opposing coils ( 14 a , 14 a ′, 16 a , 16 a ′, 18 a , 18 a ′, 20 a , 20 a ′, 22 a , 22 a ′, 24 a , 24 a ′; 14 b , 14 b ′, 16 b , 16 b ′, 18 b , 18 b ′, 20 b , 20 b ′, 22 b , 22 b ′, 24 b , 24 b ′) of the at least one stator ( 12 a ; 12 b ) form one coil group in each case.

8. The motor apparatus as claimed in claim 1 , characterized in that the coils ( 14 c , 16 c , 18 c , 20 c , 22 c , 24 c , 142 c , 144 c , 146 c , 148 c , 150 c , 152 c ) of the at least one stator ( 12 c ) are energized by an inverter ( 154 c , 156 c , 158 c , 160 c , 162 c , 164 c , 166 c , 168 c , 170 c , 172 c , 174 c , 176 c ), respectively, of the power supply unit ( 26 c ).

9. The motor apparatus as claimed in claim 1 , characterized by at least one rotor ( 54 a ; 54 b ; 54 c ) which comprises at least ten poles ( 56 a ; 56 b ; 56 c ).

10. An EPS drive comprising a motor apparatus ( 10 a ; 10 b ; 10 c ) as claimed in claim 1 .

11. The motor apparatus as claimed in claim 1 , wherein the motor apparatus is an electronically commutated motor apparatus.

Assignees

• Bosch Gmbh Robert

Inventors

• Wilharm Torsten

Classifications

• H02P25/22 Primary

  Multiple windings; Windings for more than three phases · CPC title

• H02K3/28

  Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) · CPC title

• H02K29/03

  with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems · CPC title

• B60L3/003

  relating to inverters · CPC title

• H02P27/085

  wherein the PWM mode is adapted on the running conditions of the motor, e.g. the switching frequency · CPC title